ABSTRAK: Pengembangan bandar udara di Provinsi Kalimantan Utara dinilai sangat penting dikarenakan bandar udara tersebut berfungsi sebagai penghubung antara wilayah-wilayah pedalaman. Selain itu, semakin bertambahnya volume frekuensi penerbangan juga menjadi alasan diperlukannya pengembangan bandar udara. Dalam perencanaan pengembangan bandar udara selama ini didasarkan pada volume lalu lintas penerbangan dan total jumlah penumpang tahunan, hal ini sesuai dengan PM No 39 tahun 2019. Penelitian ini bertujuan untuk memberikan sudut pandang lain dalam proses perencanaan pengembangan bandar udara dengan menggunakan teori pengambilan keputusan yaitu kombinasi metode Analitic Hierarchy Process (AHP) dan Simple Additive Weighting (SAW). Metode ini menggunakan empat kriteria dan 121 alternatif dalam menentukan prioritas terbaik pengembangan bandar udara di Kalimantan Utara. Hasil dari perhitungan AHP dan SAW menunjukan bahwa pada ketiga bandar udara yang diteliti, untuk bandar udara Juwata Tarakan menunjukan bahwa terminal penumpang menjadi prioritas untuk dikembangkan dari sisi fasilitas darat dengan nilai bobot 0.2851 dan peralatan bantu visual dengan nilai bobot 1 untuk sisi fasilitas udara, lalu untuk bandar udara Nunukan menunjukan bahwa tempat parkir kendaraan menjadi prioritas untuk dikembangkan dengan nilai bobot 0.2749 dari sisi fasilitas darat sedangkan untuk fasilitas dari sisi udara yaitu fasilitas incapacitated passenger loading vehicle (IPL) dengan nilai bobot 0.9031, lalu untuk bandar udara Tanjung Harapan dari sisi fasilitas darat belum ada yang perlu dikembangkan sedangkan dari sisi fasilitas udara peralatan pelayanan darat dan kendaraan operasional di sisi udara yang harus dikembangkan dengan nilai bobot 1. Kata Kunci: Bandar Udara, AHP, SAW
{"title":"Sistem Pendukung Pengambilan Keputusan Dalam Penentuan Prioritas Pengembangan Bandar Udara Di Kalimantan Utara","authors":"Hernanda Nur Umami, Iif Ahmad Syarif","doi":"10.35334/cesj.v1i1.2890","DOIUrl":"https://doi.org/10.35334/cesj.v1i1.2890","url":null,"abstract":"ABSTRAK: Pengembangan bandar udara di Provinsi Kalimantan Utara dinilai sangat penting dikarenakan bandar udara tersebut berfungsi sebagai penghubung antara wilayah-wilayah pedalaman. Selain itu, semakin bertambahnya volume frekuensi penerbangan juga menjadi alasan diperlukannya pengembangan bandar udara. Dalam perencanaan pengembangan bandar udara selama ini didasarkan pada volume lalu lintas penerbangan dan total jumlah penumpang tahunan, hal ini sesuai dengan PM No 39 tahun 2019. Penelitian ini bertujuan untuk memberikan sudut pandang lain dalam proses perencanaan pengembangan bandar udara dengan menggunakan teori pengambilan keputusan yaitu kombinasi metode Analitic Hierarchy Process (AHP) dan Simple Additive Weighting (SAW). Metode ini menggunakan empat kriteria dan 121 alternatif dalam menentukan prioritas terbaik pengembangan bandar udara di Kalimantan Utara. Hasil dari perhitungan AHP dan SAW menunjukan bahwa pada ketiga bandar udara yang diteliti, untuk bandar udara Juwata Tarakan menunjukan bahwa terminal penumpang menjadi prioritas untuk dikembangkan dari sisi fasilitas darat dengan nilai bobot 0.2851 dan peralatan bantu visual dengan nilai bobot 1 untuk sisi fasilitas udara, lalu untuk bandar udara Nunukan menunjukan bahwa tempat parkir kendaraan menjadi prioritas untuk dikembangkan dengan nilai bobot 0.2749 dari sisi fasilitas darat sedangkan untuk fasilitas dari sisi udara yaitu fasilitas incapacitated passenger loading vehicle (IPL) dengan nilai bobot 0.9031, lalu untuk bandar udara Tanjung Harapan dari sisi fasilitas darat belum ada yang perlu dikembangkan sedangkan dari sisi fasilitas udara peralatan pelayanan darat dan kendaraan operasional di sisi udara yang harus dikembangkan dengan nilai bobot 1. Kata Kunci: Bandar Udara, AHP, SAW","PeriodicalId":30755,"journal":{"name":"Selected Scientific Papers Journal of Civil Engineering","volume":"12 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74155384","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Seiring berjalannya waktu dunia konstruksi terus berkembang salah satunya dalam inovasi teknologi beton dengan ditemukannya beton yang dapat meloloskan air dari rongga beton tersebut yang dikenal dengan istilah beton porous. Penelitian ini bertujuan untuk mengetahui nilai karakteristik beton porous meliputi berat isi, penyerapan, dan kuat tekan. Variabel pengujian yang digunakan ialah A pada FAS 0;48, B pada FAS 0;53, C pada FAS 0;58, dan D pada FAS 0;64. Demi memperoleh porositas yang baik pada beton porous maka agregat yang digunakan hanya 3 ukuran agregat yang seragam dengan penggunaan semen sebanyak 1 dari 6 berat agregat sedangkan konsistensi pasta (semen air) mengikuti nilai FAS yang ditetapkan. Total jumlah benda uji sebanyak 120 sampel dengan setiap variabelnya masing-masing sebanyak 30 sampel dan pengujian dilakukan pada saat benda uji berumur 28 hari. Hasil dari penelitian ini diuji secara statistik menggunakan distribusi normal hingga memperoleh nilai berat isi 1,64 gram/cm3 pada FAS 0;48, 1,66 gram/cm3 pada FAS 0;53, 1,67 gram/cm3 pada FAS 0;58, dan 1,69 gram/cm3 pada FAS 0;64. Nilai penyerapan 1,88% pada FAS 0;48, 1,94% pada FAS 0;53, 2,17% pada FAS 0;58, dan 1,82% pada FAS 0;64. Nilai kuat tekan 4,4 MPa pada FAS 0;48, 5,5 MPa pada FAS 0;53, 5,8 MPa pada FAS 0;58, dan 3,6 Mpa pada FAS 0;64. Namun perlu diketahui bahwa pada variabel D (FAS 0,64) tidak memenuhi ketentuan sifat tampak/fisik dari beton porous dikarenakan pengunaan air yang berlebih membuat permukaan beton menjadi tertutup.
{"title":"Analisis Kuat Tekan Beton Porous dengan Perbandingan Nilai Faktor Air Semen (FAS)","authors":"Muhammad Alfarizi Manan, E. Utomo","doi":"10.35334/cesj.v1i1.2887","DOIUrl":"https://doi.org/10.35334/cesj.v1i1.2887","url":null,"abstract":"Seiring berjalannya waktu dunia konstruksi terus berkembang salah satunya dalam inovasi teknologi beton dengan ditemukannya beton yang dapat meloloskan air dari rongga beton tersebut yang dikenal dengan istilah beton porous. Penelitian ini bertujuan untuk mengetahui nilai karakteristik beton porous meliputi berat isi, penyerapan, dan kuat tekan. Variabel pengujian yang digunakan ialah A pada FAS 0;48, B pada FAS 0;53, C pada FAS 0;58, dan D pada FAS 0;64. Demi memperoleh porositas yang baik pada beton porous maka agregat yang digunakan hanya 3 ukuran agregat yang seragam dengan penggunaan semen sebanyak 1 dari 6 berat agregat sedangkan konsistensi pasta (semen air) mengikuti nilai FAS yang ditetapkan. Total jumlah benda uji sebanyak 120 sampel dengan setiap variabelnya masing-masing sebanyak 30 sampel dan pengujian dilakukan pada saat benda uji berumur 28 hari. Hasil dari penelitian ini diuji secara statistik menggunakan distribusi normal hingga memperoleh nilai berat isi 1,64 gram/cm3 pada FAS 0;48, 1,66 gram/cm3 pada FAS 0;53, 1,67 gram/cm3 pada FAS 0;58, dan 1,69 gram/cm3 pada FAS 0;64. Nilai penyerapan 1,88% pada FAS 0;48, 1,94% pada FAS 0;53, 2,17% pada FAS 0;58, dan 1,82% pada FAS 0;64. Nilai kuat tekan 4,4 MPa pada FAS 0;48, 5,5 MPa pada FAS 0;53, 5,8 MPa pada FAS 0;58, dan 3,6 Mpa pada FAS 0;64. Namun perlu diketahui bahwa pada variabel D (FAS 0,64) tidak memenuhi ketentuan sifat tampak/fisik dari beton porous dikarenakan pengunaan air yang berlebih membuat permukaan beton menjadi tertutup.","PeriodicalId":30755,"journal":{"name":"Selected Scientific Papers Journal of Civil Engineering","volume":"25 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90497009","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
ABSTRAK: Kerusakan yang terjadi di Pantai Amal Kota Tarakan diakibatkan oleh proses dinamika pantai seperti abrasi sangat yang berdampak buruk serta menimbulkan kekhawatiran bagi warga pesisir pantai tersebut. Oleh sebab itu dalam pengembangan dan pengamanan daerah pesisir serta perlindungan kepada mansyarakat sekitar maka perlu pengetahuan mengenai karakteristik gelombang yang terjadi di pantai tersebut. Dalam penelitian ini analisa dilakukan menggunakan Teori Airy, pendekatan data analisa menggunakan data angin dari BKMG Juwata Tarakan. Hasil analisa transformasi gelombang selama 10 tahun (2010-2019) di Pantai Amal Baru diperoleh arah angin yang mendominasi dari timur menuju kearah barat, panjang fetch 224,589 m, tinggi gelombang pecah berkisar antara 0,8 m – 2,4 m dan kedalaman gelombang pecah berkisar antara 0,38 m - 2,1 m. Dari hasil analisa, pada kondisi angin maksimal, angin rata-rata, dan angin yang sering terjadi Kecepatan Angin Darat yang bertiup antara 3,5-15 m/s, Kecepatan Angin Laut yang bertiup antara 5 - 19 m/s, Peramalan Gelombang Angin Tinggi signifikan (H) antara 0,9 - 4,8 m, Priode (T) antara 5,5 - 10,2 s, Durasi (D) antara 9 - 11 jam, sehingga hasil Analisa untuk Tinggi Gelombang (H) antara 0,8 - 2,4 m, Kedalaman Gelombang Pecah (Hb) antara 0,3 - 2,1 m, dan Sudut datang gelombang 8˚- 30˚. Sehingga dapat disimpulkan bahwa tinggi gelombang yang dihasilkan pada saat kondisi kecepatan angin maksimal dan kecepatan angin sering terjadi merupakan gelombang destruktif (gelomban yan dapat merusak pantai). Kata kunci: Gelombang pecah, hindcasting, karakteristik gelombang, Pantai amal baru, refraksi, shoaling.
{"title":"Kajian Karakteristik Gelombang Pecah Di Pantai Amal Baru Kota Tarakan","authors":"Siti Kahtijah, E. Utomo, Muhammad Hermansyah","doi":"10.35334/cesj.v1i1.2896","DOIUrl":"https://doi.org/10.35334/cesj.v1i1.2896","url":null,"abstract":"ABSTRAK: Kerusakan yang terjadi di Pantai Amal Kota Tarakan diakibatkan oleh proses dinamika pantai seperti abrasi sangat yang berdampak buruk serta menimbulkan kekhawatiran bagi warga pesisir pantai tersebut. Oleh sebab itu dalam pengembangan dan pengamanan daerah pesisir serta perlindungan kepada mansyarakat sekitar maka perlu pengetahuan mengenai karakteristik gelombang yang terjadi di pantai tersebut. Dalam penelitian ini analisa dilakukan menggunakan Teori Airy, pendekatan data analisa menggunakan data angin dari BKMG Juwata Tarakan. Hasil analisa transformasi gelombang selama 10 tahun (2010-2019) di Pantai Amal Baru diperoleh arah angin yang mendominasi dari timur menuju kearah barat, panjang fetch 224,589 m, tinggi gelombang pecah berkisar antara 0,8 m – 2,4 m dan kedalaman gelombang pecah berkisar antara 0,38 m - 2,1 m. Dari hasil analisa, pada kondisi angin maksimal, angin rata-rata, dan angin yang sering terjadi Kecepatan Angin Darat yang bertiup antara 3,5-15 m/s, Kecepatan Angin Laut yang bertiup antara 5 - 19 m/s, Peramalan Gelombang Angin Tinggi signifikan (H) antara 0,9 - 4,8 m, Priode (T) antara 5,5 - 10,2 s, Durasi (D) antara 9 - 11 jam, sehingga hasil Analisa untuk Tinggi Gelombang (H) antara 0,8 - 2,4 m, Kedalaman Gelombang Pecah (Hb) antara 0,3 - 2,1 m, dan Sudut datang gelombang 8˚- 30˚. Sehingga dapat disimpulkan bahwa tinggi gelombang yang dihasilkan pada saat kondisi kecepatan angin maksimal dan kecepatan angin sering terjadi merupakan gelombang destruktif (gelomban yan dapat merusak pantai). Kata kunci: Gelombang pecah, hindcasting, karakteristik gelombang, Pantai amal baru, refraksi, shoaling.","PeriodicalId":30755,"journal":{"name":"Selected Scientific Papers Journal of Civil Engineering","volume":"25 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90774126","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
ABSTRAK: Pulau Bunyu adalah sebuah kecamatan di Kabupaten Bulungan, Provinsi Kalimantan Utara. Pantai TPI (Tempat Pelelangan Ikan) salah satu pantai di Pulau Bunyu yang terletak di Desa Bunyu Selatan. Pantai TPI merupakan kawasan yang sering di datangi oleh penduduk untuk melakukan rekreasi. Menurut warga banyak pasir-pasir yang tergerus air laut. Maka perlu adanya informasi tentang karakteristik gelombang pada daerah tersebut yang dapat merusak pantai, salah satunya adalah dengan kajian karakteristik gelombang pecah. Peramalan gelombang di lakukan dengan perhitungan menggunakan metode hindcasting gelombang berdasarkan data angin kurun waktu 10 tahun dari stasiun BMKG Tarakan untuk mendapatkan periode dan tinggi gelombang. Dari hasil perhitungan gelombang di Pantai TPI Pulau Bunyu di dominasi oleh gelombang arah Timur dengan kecepatan angin maksimum terjadi pada bulan Maret 2020 dengan H = 2,765 m dan T= 6,880 det, Kr = 0,9404 – 1,0023 dan Ks = 0,913 – 1,244, Hb = 2,2 m, db = 0,4 dan Sudut = 17,2°. Pada gelombang angin dominan dengan H = 0,700 m dan T = 4,197 det, Kr = 0,8244-1,0545 dan Ks = 0,914-1,270 , Hb = 0,7 meter, db = 0,2 m dan Sudut = 28°. Pada Gelombang Rata-Rata dengan H = 0,720 m dan T = 4,391 det, Kr = 0,9190-0,9998 dan Ks = 0,914-1,270 , Hb = 0,74 meter, db = 0,2 m dan Sudut = 19°. Pada kondisi angin maksimum gelombang ini termasuk gelombang yang merusak pantai karena tinggi gelombang lebih dari 1.00 meter, sedangkan pada kondisi besaran angin yang sering terjadi dan rata-rata, gelombang tidak merusak pantai.Kata Kunci : Gelombang Pecah, hindcasting, karateristik gelombang, Pantai TPI Pulau Bunyu
摘要:本玉岛是加里曼丹省巴尔甘摄政的一个省。TPI海滩是位于南Bunyu岛上的一个海滩。TPI海滩是人们经常去的度假胜地。据居民称，大量的沙子被海水冲走。因此，应该有关于该地区破坏性海滩的海浪特征的信息，其中之一是对海浪特征的研究。根据气象站10年的风速计算，波的乘法是根据分析方法进行的。从计算结果TPI Bunyu岛海滩上的波浪被海浪统治东方最大风速为发生于2020年3月H = 2,765 m和T = 6,880 det, Kr = 0.9404——1.0023和k = 0.913 1,244, Hb = 2.2 m, db = 0.4和角=该项°。公元主导风浪和H = 0.700 T = 4,197 det, Kr = 0,8244-1,0545和k = 0,914-1,270, Hb = 0.7米,db = 0.2 m和角= 28°。浪花上平均H = 0.720 m和T = 4,391 det, Kr = 0,9190-0,9998 Hb = 0,74米,k = 0,914-1,270 db = 0.2 m和= 19°角度。在最大风力条件下，这些波包括破坏海岸的波，因为海浪的高度超过1米，而在频繁和平均风速条件下，它们不会破坏海滩。关键词:破碎的海浪、hinddedetion、karaite波、Bunyu岛的海滩
{"title":"Kajian Karakteristik Gelombang Pecah Di Pantai Tempat Pelelangan Ikan (TPI) Pulau Bunyu, Kabupaten Bulungan","authors":"Detya Nurfajar Rini, Edy Utomo","doi":"10.35334/cesj.v1i1.2891","DOIUrl":"https://doi.org/10.35334/cesj.v1i1.2891","url":null,"abstract":"ABSTRAK: Pulau Bunyu adalah sebuah kecamatan di Kabupaten Bulungan, Provinsi Kalimantan Utara. Pantai TPI (Tempat Pelelangan Ikan) salah satu pantai di Pulau Bunyu yang terletak di Desa Bunyu Selatan. Pantai TPI merupakan kawasan yang sering di datangi oleh penduduk untuk melakukan rekreasi. Menurut warga banyak pasir-pasir yang tergerus air laut. Maka perlu adanya informasi tentang karakteristik gelombang pada daerah tersebut yang dapat merusak pantai, salah satunya adalah dengan kajian karakteristik gelombang pecah. Peramalan gelombang di lakukan dengan perhitungan menggunakan metode hindcasting gelombang berdasarkan data angin kurun waktu 10 tahun dari stasiun BMKG Tarakan untuk mendapatkan periode dan tinggi gelombang. Dari hasil perhitungan gelombang di Pantai TPI Pulau Bunyu di dominasi oleh gelombang arah Timur dengan kecepatan angin maksimum terjadi pada bulan Maret 2020 dengan H = 2,765 m dan T= 6,880 det, Kr = 0,9404 – 1,0023 dan Ks = 0,913 – 1,244, Hb = 2,2 m, db = 0,4 dan Sudut = 17,2°. Pada gelombang angin dominan dengan H = 0,700 m dan T = 4,197 det, Kr = 0,8244-1,0545 dan Ks = 0,914-1,270 , Hb = 0,7 meter, db = 0,2 m dan Sudut = 28°. Pada Gelombang Rata-Rata dengan H = 0,720 m dan T = 4,391 det, Kr = 0,9190-0,9998 dan Ks = 0,914-1,270 , Hb = 0,74 meter, db = 0,2 m dan Sudut = 19°. Pada kondisi angin maksimum gelombang ini termasuk gelombang yang merusak pantai karena tinggi gelombang lebih dari 1.00 meter, sedangkan pada kondisi besaran angin yang sering terjadi dan rata-rata, gelombang tidak merusak pantai.Kata Kunci : Gelombang Pecah, hindcasting, karateristik gelombang, Pantai TPI Pulau Bunyu","PeriodicalId":30755,"journal":{"name":"Selected Scientific Papers Journal of Civil Engineering","volume":"78 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76833143","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-12-01DOI: 10.2478/sspjce-2021-0013
J. Smetankova, P. Mésároš, K. Krajníková
Abstract Technological progress is reflected in all industries. Obsolete project manuals in the construction industry are being replaced by digitized automated controls that monitor the project in real-time. One of the main trends is the introduction of technologies based on data analytics. Effective use of technology to collect and analyse data is key to improving a building's planning and management across its life cycle. Building information models, which process digital content related to the entire life cycle of a building, are becoming an effective tool. The main goal of the paper is to design and identify the structure of the developed database, which, based on the acquired knowledge, contains graphical models that have selected non-graphical information.
{"title":"Innovative cost estimation methods for building production","authors":"J. Smetankova, P. Mésároš, K. Krajníková","doi":"10.2478/sspjce-2021-0013","DOIUrl":"https://doi.org/10.2478/sspjce-2021-0013","url":null,"abstract":"Abstract Technological progress is reflected in all industries. Obsolete project manuals in the construction industry are being replaced by digitized automated controls that monitor the project in real-time. One of the main trends is the introduction of technologies based on data analytics. Effective use of technology to collect and analyse data is key to improving a building's planning and management across its life cycle. Building information models, which process digital content related to the entire life cycle of a building, are becoming an effective tool. The main goal of the paper is to design and identify the structure of the developed database, which, based on the acquired knowledge, contains graphical models that have selected non-graphical information.","PeriodicalId":30755,"journal":{"name":"Selected Scientific Papers Journal of Civil Engineering","volume":"18 1","pages":"7 - 23"},"PeriodicalIF":0.0,"publicationDate":"2021-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78024809","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-12-01DOI: 10.2478/sspjce-2021-0016
M. Rachedi, A. Kriker
Abstract The negative impact of the production and use of building materials on the environment has become evident, so in recent decades, to find more sustainable, eco-friendly, and low-cost materials, the last research tends to reconsider the use of natural fibers and traditional building materials. This paper aims to develop a bio-composite based on the southern Algerian region's local materials consisting mainly of plaster and waste from date palm trees. Many properties were examined experimentally through previous research of our team (physical, mechanical, and microstructure characteristics) [1, 2] to characterize these materials. Several samples of bio-composite of plaster configurations with short length (20mm) and eight-weight ratios (0.5% - 4%) of palm fibers were prepared for mechanical, thermal, and physical characterizations. In addition, tested all previous properties on the specimens after 28 days of curing in normal conditions. The results show a clear improvement in the bio-composites mechanical performance (an increase in the bending strength with achieving compressive strength) and their thermal properties, which have been well developed (density, thermal conductivity, and specific heat capacity). To enhance the resistance of palm fibers to chemical degradation in the plaster's alkaline environment and improve the adhesion between them, these fibers were treated with a NaOH solution of 1% concentration. The plaster's composites reinforced with date palm fibers can be qualified as eco-friendly and thermal insulation building materials.
{"title":"Investigation of the mechanical and thermal characteristics of an eco-insulating material made of plaster and date palm fibers","authors":"M. Rachedi, A. Kriker","doi":"10.2478/sspjce-2021-0016","DOIUrl":"https://doi.org/10.2478/sspjce-2021-0016","url":null,"abstract":"Abstract The negative impact of the production and use of building materials on the environment has become evident, so in recent decades, to find more sustainable, eco-friendly, and low-cost materials, the last research tends to reconsider the use of natural fibers and traditional building materials. This paper aims to develop a bio-composite based on the southern Algerian region's local materials consisting mainly of plaster and waste from date palm trees. Many properties were examined experimentally through previous research of our team (physical, mechanical, and microstructure characteristics) [1, 2] to characterize these materials. Several samples of bio-composite of plaster configurations with short length (20mm) and eight-weight ratios (0.5% - 4%) of palm fibers were prepared for mechanical, thermal, and physical characterizations. In addition, tested all previous properties on the specimens after 28 days of curing in normal conditions. The results show a clear improvement in the bio-composites mechanical performance (an increase in the bending strength with achieving compressive strength) and their thermal properties, which have been well developed (density, thermal conductivity, and specific heat capacity). To enhance the resistance of palm fibers to chemical degradation in the plaster's alkaline environment and improve the adhesion between them, these fibers were treated with a NaOH solution of 1% concentration. The plaster's composites reinforced with date palm fibers can be qualified as eco-friendly and thermal insulation building materials.","PeriodicalId":30755,"journal":{"name":"Selected Scientific Papers Journal of Civil Engineering","volume":"25 9","pages":"55 - 66"},"PeriodicalIF":0.0,"publicationDate":"2021-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72462149","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-12-01DOI: 10.2478/sspjce-2021-0020
S. Mansour, Y. Ghernouti
Abstract Perlite, a natural glassy volcanic rock could be used as supplementary cementitious material to reduce environmental pollution and the consumption of precious natural resources in the concrete industries. The aim of this work is to assess natural perlite used as 50% aggregates substitution by volume (sand or gravel) and as 10%, 15%, 20% cement substitution in self-compacting concrete. Workability characteristics and mechanical properties were analysed. Results showed that replacing 50% of natural aggregates with 50% of perlite aggregates or substituting cement with 10% of perlite powder generated the best workability characteristics and improved compressive, flexural strength, and elastic modulus of concrete at 28 days. Moreover, the results were combined to develop correlations that prove to be good between mechanical properties of self-compacting. Using perlite as aggregates offers a new source of supply and saves natural aggregates. Also, perlite used as cement substitution helps to reduce PC consumption, cost, and CO2 emission.
{"title":"Behaviour of Self-Compacting Concrete incorporating Natural Perlite used as Part of Cement and as Aggregates","authors":"S. Mansour, Y. Ghernouti","doi":"10.2478/sspjce-2021-0020","DOIUrl":"https://doi.org/10.2478/sspjce-2021-0020","url":null,"abstract":"Abstract Perlite, a natural glassy volcanic rock could be used as supplementary cementitious material to reduce environmental pollution and the consumption of precious natural resources in the concrete industries. The aim of this work is to assess natural perlite used as 50% aggregates substitution by volume (sand or gravel) and as 10%, 15%, 20% cement substitution in self-compacting concrete. Workability characteristics and mechanical properties were analysed. Results showed that replacing 50% of natural aggregates with 50% of perlite aggregates or substituting cement with 10% of perlite powder generated the best workability characteristics and improved compressive, flexural strength, and elastic modulus of concrete at 28 days. Moreover, the results were combined to develop correlations that prove to be good between mechanical properties of self-compacting. Using perlite as aggregates offers a new source of supply and saves natural aggregates. Also, perlite used as cement substitution helps to reduce PC consumption, cost, and CO2 emission.","PeriodicalId":30755,"journal":{"name":"Selected Scientific Papers Journal of Civil Engineering","volume":"27 1","pages":"115 - 132"},"PeriodicalIF":0.0,"publicationDate":"2021-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85938029","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-12-01DOI: 10.2478/sspjce-2021-0015
Idoui Imane, Rehab Bekkouche Souhila, Benzaid Riad, Berdi Inas
Abstract The treatment and stabilization of soils make it possible to recycle materials on construction sites in preparation for the installation of a final covering or the construction of a road network. In road geotechnics, various materials such as lime, cement, and pozzolans were used as additions to stabilize clay soils. In recent years, bio-polymers and bacteria are of increasing interest to researchers in the field of stabilization and improvement of the physico-mechanical and chemical characteristics of clay soils. Currently, in place of traditional clay treatment techniques and to minimize environmental problems, natural fibrous waste is being used increasingly and spectacularly. Several studies on biotechnological engineering applications already exist, such as the use of vegetation, algae, bacteria, enzymes, and biopolymers. The northern Algerian region where the urban tissue does not stop expanding contains significant potential in terms of wheat straw, which represents a very present agricultural waste. So, there is a local interest in the sustainable development of several regions known to produce wheat. This study is interested in investigating the effect of wheat straw on the stabilization of swelling clay soil. In order to improve the physico-mechanical characteristics of clay soils, a series of laboratory tests (Atterberg limit, Proctor test, direct shear test, Oedometer test, and unconfident compressive strength test) were carried out on reconstituted clay soil with defined initial properties through numerous analyses (e.g., XRD and XRF) and then treated with different vegetable fiber content. The results indicate that there is an improvement in the compressibility characteristics of the treated soil, a remarkable decrease in the swelling index and the compressibility index respectively with increasing percentages of wheat straw.
{"title":"Use of Biopolymers in the Stabilization of Clay Soils","authors":"Idoui Imane, Rehab Bekkouche Souhila, Benzaid Riad, Berdi Inas","doi":"10.2478/sspjce-2021-0015","DOIUrl":"https://doi.org/10.2478/sspjce-2021-0015","url":null,"abstract":"Abstract The treatment and stabilization of soils make it possible to recycle materials on construction sites in preparation for the installation of a final covering or the construction of a road network. In road geotechnics, various materials such as lime, cement, and pozzolans were used as additions to stabilize clay soils. In recent years, bio-polymers and bacteria are of increasing interest to researchers in the field of stabilization and improvement of the physico-mechanical and chemical characteristics of clay soils. Currently, in place of traditional clay treatment techniques and to minimize environmental problems, natural fibrous waste is being used increasingly and spectacularly. Several studies on biotechnological engineering applications already exist, such as the use of vegetation, algae, bacteria, enzymes, and biopolymers. The northern Algerian region where the urban tissue does not stop expanding contains significant potential in terms of wheat straw, which represents a very present agricultural waste. So, there is a local interest in the sustainable development of several regions known to produce wheat. This study is interested in investigating the effect of wheat straw on the stabilization of swelling clay soil. In order to improve the physico-mechanical characteristics of clay soils, a series of laboratory tests (Atterberg limit, Proctor test, direct shear test, Oedometer test, and unconfident compressive strength test) were carried out on reconstituted clay soil with defined initial properties through numerous analyses (e.g., XRD and XRF) and then treated with different vegetable fiber content. The results indicate that there is an improvement in the compressibility characteristics of the treated soil, a remarkable decrease in the swelling index and the compressibility index respectively with increasing percentages of wheat straw.","PeriodicalId":30755,"journal":{"name":"Selected Scientific Papers Journal of Civil Engineering","volume":"98 1","pages":"37 - 53"},"PeriodicalIF":0.0,"publicationDate":"2021-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82451844","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-12-01DOI: 10.2478/sspjce-2021-0018
Bousbia Nawel, M. Salah, Houssou Noura
Abstract The construction and loading of deep foundations (piles) of high-rise buildings causes a considerable effect in terms of stresses and deformation and requires assessing their impact on the response of adjacent tunnels to deformations, particularly for pile foundations, which are often constructed in locations very close to existing tunnels. The execution process for piles structures generates displacements, stresses, and forces, which are transferred through the piles’ soil surrounding a nearby existing tunnel. The research presented in this paper has led to a significantly improved understanding of pile-tunnel interaction problem. It is crucial for the analysis of the impact of the pile construction on an existing tunnel. The treated topic appears in a setting of an urban environment, where we construct numerous profound foundations, sometimes in contact or adjacent to a. In this paper, the response of the existing tunnel under constructed pile process is studied. Numerical modeling was carried out using Plaxis3D software in which the Mohr-Coulomb Model (MC) has been used for modeling, while the piles/ tunnels are modeled as a linear elastic material. Furthermore, a parametric study is conducted, and its cases are investigated. The displacements and the stresses generated on the tunnel lining decreases with the increase in relative distance between pile and tunnel (spacing), the location/length of the pile from the tunnel, the pile diameter, the number of piles. We have also identified two geometrical parameters of the tunnel: shape section and thickness lining which play a prominent role in the interaction between an existing tunnel and a new pile to excavate.
{"title":"A simplified 3D model for existing tunnel response to piles construction","authors":"Bousbia Nawel, M. Salah, Houssou Noura","doi":"10.2478/sspjce-2021-0018","DOIUrl":"https://doi.org/10.2478/sspjce-2021-0018","url":null,"abstract":"Abstract The construction and loading of deep foundations (piles) of high-rise buildings causes a considerable effect in terms of stresses and deformation and requires assessing their impact on the response of adjacent tunnels to deformations, particularly for pile foundations, which are often constructed in locations very close to existing tunnels. The execution process for piles structures generates displacements, stresses, and forces, which are transferred through the piles’ soil surrounding a nearby existing tunnel. The research presented in this paper has led to a significantly improved understanding of pile-tunnel interaction problem. It is crucial for the analysis of the impact of the pile construction on an existing tunnel. The treated topic appears in a setting of an urban environment, where we construct numerous profound foundations, sometimes in contact or adjacent to a. In this paper, the response of the existing tunnel under constructed pile process is studied. Numerical modeling was carried out using Plaxis3D software in which the Mohr-Coulomb Model (MC) has been used for modeling, while the piles/ tunnels are modeled as a linear elastic material. Furthermore, a parametric study is conducted, and its cases are investigated. The displacements and the stresses generated on the tunnel lining decreases with the increase in relative distance between pile and tunnel (spacing), the location/length of the pile from the tunnel, the pile diameter, the number of piles. We have also identified two geometrical parameters of the tunnel: shape section and thickness lining which play a prominent role in the interaction between an existing tunnel and a new pile to excavate.","PeriodicalId":30755,"journal":{"name":"Selected Scientific Papers Journal of Civil Engineering","volume":"63 1","pages":"87 - 103"},"PeriodicalIF":0.0,"publicationDate":"2021-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79993715","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-12-01DOI: 10.2478/sspjce-2021-0024
Berdi Inas, M. Salah, Benzaid Riad, Idoui Imane
Abstract The mineralogy of fine soils such as clays has always posed problems and remains an uncontrollable phenomenon in the presence of water and causes destructible damage throughout the world. In order to minimize the cost of implementation, it is necessary to find practical and less expensive solutions to ensure the stabilization of these soils by the valorisation of local waste available in nature. This article concerns an experimental study on the treatment of reconstituted soil by the addition of paper ash of different proportions on a set of standardized tests, the preliminary results show that the paper ash to the clay soil improves its swelling potential, its plasticity, its compaction characteristics, and its shear strength parameters.
{"title":"Treatment of clay soil with paper ash","authors":"Berdi Inas, M. Salah, Benzaid Riad, Idoui Imane","doi":"10.2478/sspjce-2021-0024","DOIUrl":"https://doi.org/10.2478/sspjce-2021-0024","url":null,"abstract":"Abstract The mineralogy of fine soils such as clays has always posed problems and remains an uncontrollable phenomenon in the presence of water and causes destructible damage throughout the world. In order to minimize the cost of implementation, it is necessary to find practical and less expensive solutions to ensure the stabilization of these soils by the valorisation of local waste available in nature. This article concerns an experimental study on the treatment of reconstituted soil by the addition of paper ash of different proportions on a set of standardized tests, the preliminary results show that the paper ash to the clay soil improves its swelling potential, its plasticity, its compaction characteristics, and its shear strength parameters.","PeriodicalId":30755,"journal":{"name":"Selected Scientific Papers Journal of Civil Engineering","volume":"350 1","pages":"163 - 174"},"PeriodicalIF":0.0,"publicationDate":"2021-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79701448","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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