Results of experimental investigation of concrete containing waste tyre crumb rubber are presented in the paper to determine mechanical properties such as the compressive strength, splitting tensile strength, and flexural strength of concrete. The C35/45 compressive strength class concrete was used in this study. Five to twenty-five per cent of sand volume was replaced with waste tire crumb rubber, and the results were compared to ordinary concrete test results. The results revealed that the performance slightly increased by 1.46 % and 1.96 % at 5 % and 10% of crumb rubber replacement compared to ordinary concrete.
{"title":"Flexural fatigue performance and mechanical properties of rubberized concrete","authors":"S. Lakušić","doi":"10.14256/JCE.1427.2015","DOIUrl":"https://doi.org/10.14256/JCE.1427.2015","url":null,"abstract":"Results of experimental investigation of concrete containing waste tyre crumb rubber are presented in the paper to determine mechanical properties such as the compressive strength, splitting tensile strength, and flexural strength of concrete. The C35/45 compressive strength class concrete was used in this study. Five to twenty-five per cent of sand volume was replaced with waste tire crumb rubber, and the results were compared to ordinary concrete test results. The results revealed that the performance slightly increased by 1.46 % and 1.96 % at 5 % and 10% of crumb rubber replacement compared to ordinary concrete.","PeriodicalId":50415,"journal":{"name":"Gradevinar","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2017-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66958978","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
M. F. Smrkić, Domagoj Damjanović, Anamaria Baričević
Dodavanjem čeličnih vlakana u beton poboljšavaju se njegova svojstva pri zamoru. Opisana su eksperimentalna istraživanja betonskih elemenata s recikliranim čeličnim vlaknima pri cikličkom opterećenju. Prikazani su proračunski modeli zamora prema fib Model Code 2010, ACI 215 i JSCE smjernicama. Rezultati proračunskih modela uspoređeni su s rezultatima eksperimentalnog istraživanja. Uočeno je da, u pravilu, svi proračunski modeli podcjenjuju eksperimentalno određenu otpornost betona pri zamoru. Dan je prijedlog korekcije fib Model Code modela.
{"title":"Primjena recikliranih čeličnih vlakana u betonskim elementima izloženima zamoru","authors":"M. F. Smrkić, Domagoj Damjanović, Anamaria Baričević","doi":"10.14256/JCE.2059.2017","DOIUrl":"https://doi.org/10.14256/JCE.2059.2017","url":null,"abstract":"Dodavanjem čeličnih vlakana u beton poboljšavaju se njegova svojstva pri zamoru. Opisana su eksperimentalna istraživanja betonskih elemenata s recikliranim čeličnim vlaknima pri cikličkom opterećenju. Prikazani su proračunski modeli zamora prema fib Model Code 2010, ACI 215 i JSCE smjernicama. Rezultati proračunskih modela uspoređeni su s rezultatima eksperimentalnog istraživanja. Uočeno je da, u pravilu, svi proračunski modeli podcjenjuju eksperimentalno određenu otpornost betona pri zamoru. Dan je prijedlog korekcije fib Model Code modela.","PeriodicalId":50415,"journal":{"name":"Gradevinar","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2017-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47499075","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Investigation of GFRP strengthened RC non-slender columns under eccentric loading","authors":"G. Vesmawala, P. Kodag","doi":"10.14256/JCE.1591.2016","DOIUrl":"https://doi.org/10.14256/JCE.1591.2016","url":null,"abstract":"","PeriodicalId":50415,"journal":{"name":"Gradevinar","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2017-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48458688","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Estimating investment value in railway lines reconstruction process","authors":"S. Lakušić","doi":"10.14256/JCE.1013.2014","DOIUrl":"https://doi.org/10.14256/JCE.1013.2014","url":null,"abstract":"","PeriodicalId":50415,"journal":{"name":"Gradevinar","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2017-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66950812","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pukotine u razdjelnicama posljedica su ponašanja betona u početku uporabe konstrukcije što može utjecati na konstrukcijska svojstva betonskih kolnika. U radu se analiziraju dosadašnja znanja za procjenu utjecaja betona u početnom periodu uporabe betonske kolničke konstrukcije. Ispitivanje je pokazalo da je pri modeliranju ponašanja pukotina potrebno uzeti u obzir međudjelovanje (u vremenu i prostoru) grupe razdjelnica. Kao rezultat takvog pristupa može se predvidjeti odnos razdjelnica i širina pukotina kako bi se procijenili njihovi učinci na svojstva betonskih kolnika.
{"title":"Influence of early-age behaviour on structural performance of concrete pavements","authors":"S. Lakušić","doi":"10.14256/JCE.1931.2016","DOIUrl":"https://doi.org/10.14256/JCE.1931.2016","url":null,"abstract":"Pukotine u razdjelnicama posljedica su ponašanja betona u početku uporabe konstrukcije što može utjecati na konstrukcijska svojstva betonskih kolnika. U radu se analiziraju dosadašnja znanja za procjenu utjecaja betona u početnom periodu uporabe betonske kolničke konstrukcije. Ispitivanje je pokazalo da je pri modeliranju ponašanja pukotina potrebno uzeti u obzir međudjelovanje (u vremenu i prostoru) grupe razdjelnica. Kao rezultat takvog pristupa može se predvidjeti odnos razdjelnica i širina pukotina kako bi se procijenili njihovi učinci na svojstva betonskih kolnika.","PeriodicalId":50415,"journal":{"name":"Gradevinar","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2017-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49666310","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The development of fly ash and incinerated paper sludge ash blend as a source material for preparing geopolymer concrete is presented in the paper. The specimens were prepared with varying percentage of fly ash replaced by paper sludge ash under different curing regimes. The compressive strength, splitting tensile strength, and bending strength values were tested and geopolymer microstructure was analysed. The up to 10% increase in strength of geopolymer concrete containing fly ash and paper sludge ash shows that good prospects exist for the use of this type of concrete for cast-in-situ applications.
{"title":"Effect of incinerated paper sludge ash on fly ash–based geopolymer concrete","authors":"S. Lakušić","doi":"10.14256/JCE.1864.2016","DOIUrl":"https://doi.org/10.14256/JCE.1864.2016","url":null,"abstract":"The development of fly ash and incinerated paper sludge ash blend as a source material for preparing geopolymer concrete is presented in the paper. The specimens were prepared with varying percentage of fly ash replaced by paper sludge ash under different curing regimes. The compressive strength, splitting tensile strength, and bending strength values were tested and geopolymer microstructure was analysed. The up to 10% increase in strength of geopolymer concrete containing fly ash and paper sludge ash shows that good prospects exist for the use of this type of concrete for cast-in-situ applications.","PeriodicalId":50415,"journal":{"name":"Gradevinar","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2017-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47640961","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
M. Malešev, V. Radonjanin, S. Draganić, Slobodan Šupić, M. Laban
Investigation results of the combined effect of partial cement replacement with fly ash, and the use of recycled concrete aggregate to improve the sustainability of concrete, are presented in this paper. The compressive strength, capillary water absorption, water permeability, and chloride ion penetration, are analysed by testing nine concrete mixtures, in which the fly ash content and water to powder ratio were varied. The results show that compressive strength slightly decreases as the fly ash content increases, but that this can be compensated by reducing the water to powder ratio.
{"title":"Influence of fly ash and decreasing water-powder ratio on performance of recycled aggregate concrete","authors":"M. Malešev, V. Radonjanin, S. Draganić, Slobodan Šupić, M. Laban","doi":"10.14256/JCE.1379.2015","DOIUrl":"https://doi.org/10.14256/JCE.1379.2015","url":null,"abstract":"Investigation results of the combined effect of partial cement replacement with fly ash, and the use of recycled concrete aggregate to improve the sustainability of concrete, are presented in this paper. The compressive strength, capillary water absorption, water permeability, and chloride ion penetration, are analysed by testing nine concrete mixtures, in which the fly ash content and water to powder ratio were varied. The results show that compressive strength slightly decreases as the fly ash content increases, but that this can be compensated by reducing the water to powder ratio.","PeriodicalId":50415,"journal":{"name":"Gradevinar","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2017-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66958479","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
In this study, two new functionals are derived based on Gâteaux differential in order to analyse buckling of symmetric cross-ply laminated composite straight beams. The functional comprises four independent variables, i.e. deflection, rotation, shear force and bending moment for Timoshenko beam, and two independent variables, deflection and bending moment, for Euler-Bernoulli beam. The application possibilities and performance of the proposed mixed finite element formulation are presented on several numerical examples.
{"title":"An alternative method for analysing buckling of laminated composite beams","authors":"G. Özkan, Gülçin Tekin, F. Kadioglu","doi":"10.14256/JCE.1665.2016","DOIUrl":"https://doi.org/10.14256/JCE.1665.2016","url":null,"abstract":"In this study, two new functionals are derived based on Gâteaux differential in order to analyse buckling of symmetric cross-ply laminated composite straight beams. The functional comprises four independent variables, i.e. deflection, rotation, shear force and bending moment for Timoshenko beam, and two independent variables, deflection and bending moment, for Euler-Bernoulli beam. The application possibilities and performance of the proposed mixed finite element formulation are presented on several numerical examples.","PeriodicalId":50415,"journal":{"name":"Gradevinar","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2017-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48964700","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
U sustavima navodnjavanja se često koriste samohodni sektorski raspršivači (tifoni) i samohodni automatizirani uređaji za linijsko ili kružno navodnjavanje na kojima uslijed naglog zatvaranja zasuna na ulazu u uređaj može doći do pojave neželjenog predtlaka. Sustav se štiti od neželjenog predtlaka postupnim zatvaranjem zasuna. U radu je na primjeru hidrauličkog proračuna nestacionarnih stanja na sustavu navodnjavanja Blata – Cerna definirana zaštita sustava od prevelikih i premalih tlakova te utjecaj istodobnog zatvaranja zasuna na rubnim dijelovima mreže.
{"title":"Vodni udar u sustavima navodnjavanja","authors":"Martina Tadić Ananić, G. Gjetvaj","doi":"10.14256/JCE.2064.2017","DOIUrl":"https://doi.org/10.14256/JCE.2064.2017","url":null,"abstract":"U sustavima navodnjavanja se često koriste samohodni sektorski raspršivači (tifoni) i samohodni automatizirani uređaji za linijsko ili kružno navodnjavanje na kojima uslijed naglog zatvaranja zasuna na ulazu u uređaj može doći do pojave neželjenog predtlaka. Sustav se štiti od neželjenog predtlaka postupnim zatvaranjem zasuna. U radu je na primjeru hidrauličkog proračuna nestacionarnih stanja na sustavu navodnjavanja Blata – Cerna definirana zaštita sustava od prevelikih i premalih tlakova te utjecaj istodobnog zatvaranja zasuna na rubnim dijelovima mreže.","PeriodicalId":50415,"journal":{"name":"Gradevinar","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2017-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.14256/JCE.2064.2017","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66965504","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：