Using Municipal Solid-Waste Incinerator Fly Ash, Wash Water, and Propylene Fibers in Self-Compacting Repair Mortar, Greenhouse Gas Emissions Potential

IF 3.6 3区 工程技术 Q1 CONSTRUCTION & BUILDING TECHNOLOGY International Journal of Concrete Structures and Materials Pub Date : 2024-08-29 DOI:10.1186/s40069-024-00694-9
Ehsan Abdi, Gholamreza Asadollahfardi, Amirmasoud Salehi, Javad Akbardoost, Negar Esmaeili, Azadeh Panahandeh
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Abstract

Wash water, municipal solid waste incineration (MSWI) fly ash, and propylene (PP) fibers were employed simultaneously to produce self-compacting repair mortar (SCRM). Different SCRM mixtures were utilized, incorporating 35, 70, and 140 kg/m3 of MSWI fly ash, along with 0.1% of PP fibers. The research focused on investigating the workability, mechanical properties, and global warming potential (GWP) of SCRM. The incorporation of MSWI fly ash and wash water in SCRM resulted in reduced workability, necessitating an increase in the use of superplasticizer. Adding MSWI fly ash decreases compressive strength. The minimum compressive strength was observed when employing 140 kg/m3 of MSWI fly ash and wash water instead of tap water simultaneously. By increasing the proportion of MSWI fly ash content and correspondingly reducing the cement content in SCRM samples, there was a decrease in flexural strength. The ultrasonic pulse velocity (UPV) of all SCRM samples falls within acceptable range. Adding MSWI fly ash to SCRM reduces fracture toughness, and the concurrent use of wash water and MSWI fly ash significantly decreases fracture toughness. Incorporating PP fibers into SCRM resulted in increased compressive strength. Utilizing wash water and MSWI fly ash in SCRM significantly reduces GWP. The avoidance of wash water consumption mitigates the environmental impact of SCRM.

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在自密实修补砂浆中使用城市固体废物焚化炉粉煤灰、洗涤水和丙烯纤维,温室气体排放潜力
同时使用洗涤水、城市固体废物焚化(MSWI)粉煤灰和丙烯(PP)纤维来生产自密实修补砂浆(SCRM)。采用了不同的 SCRM 混合物,其中包括 35、70 和 140 kg/m3 的 MSWI 粉煤灰以及 0.1% 的聚丙烯纤维。研究重点是调查 SCRM 的可加工性、机械性能和全球升温潜能值(GWP)。在 SCRM 中加入 MSWI 粉煤灰和洗涤水会降低可加工性,因此有必要增加超塑化剂的用量。添加 MSWI 粉煤灰会降低抗压强度。当同时使用 140 kg/m3 的 MSWI 粉煤灰和洗涤水而不是自来水时,抗压强度最小。在 SCRM 样品中增加 MSWI 粉煤灰的比例并相应减少水泥含量后,抗折强度有所下降。所有 SCRM 样品的超声波脉冲速度(UPV)都在可接受的范围内。在 SCRM 中添加 MSWI 粉煤灰会降低断裂韧性,同时使用洗涤水和 MSWI 粉煤灰会显著降低断裂韧性。在 SCRM 中加入 PP 纤维可提高抗压强度。在 SCRM 中使用洗涤水和 MSWI 粉煤灰可显著降低全球升温潜能值。避免了洗涤水的消耗,减轻了 SCRM 对环境的影响。
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来源期刊
International Journal of Concrete Structures and Materials
International Journal of Concrete Structures and Materials CONSTRUCTION & BUILDING TECHNOLOGY-ENGINEERING, CIVIL
CiteScore
6.30
自引率
5.90%
发文量
61
审稿时长
13 weeks
期刊介绍: The International Journal of Concrete Structures and Materials (IJCSM) provides a forum targeted for engineers and scientists around the globe to present and discuss various topics related to concrete, concrete structures and other applied materials incorporating cement cementitious binder, and polymer or fiber in conjunction with concrete. These forums give participants an opportunity to contribute their knowledge for the advancement of society. Topics include, but are not limited to, research results on Properties and performance of concrete and concrete structures Advanced and improved experimental techniques Latest modelling methods Possible improvement and enhancement of concrete properties Structural and microstructural characterization Concrete applications Fiber reinforced concrete technology Concrete waste management.
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