Improving nonlinear behavior and tensile and compressive strengths of sustainable lightweight concrete using waste glass powder, nanosilica, and recycled polypropylene fiber

IF 2.4 Q2 ENGINEERING, MECHANICAL

Nonlinear Engineering - Modeling and Application Pub Date : 2022-01-01 DOI:10.1515/nleng-2022-0008

Erfan Najaf, Maedeh Orouji, S. M. Zahrai

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引用次数: 26

Abstract

Abstract Concrete is one of the most extensively utilized building materials that can be produced, and has the potential to release a significant quantity of CO2 into the environment. In this research, through studying lightweight (LW) concrete, attempts are made to produce environmentally friendly LW concrete with high strength using nanosilica rather than part of the cement and waste glass powder instead of aggregates. Recycled polypropylene fibers are used to increase the concrete’s compressive strength and nonlinear behavior. The use of glass powder was 20, 25, and 30% of the weight of aggregates, the consumption of nanosilica was 1, 2, and 3% of the weight of cement, and the consumption of recycled fibers (FORTA Ferro-Green) was 0.5, 1, and 1.5% of the weight of cement. Leca is also utilized as a LW aggregate. According to 7- and 28-day experimentation results and field emission scanning electron microscope analysis, the best sample had 1.5% fiber, 3% nanosilica, and 25% waste glass powder, and had a compressive and tensile strengths of roughly 1.7 and 1.6 times, respectively, those of the control specimen after 28 days. Also, using 3% nanosilica instead of cement can reduce greenhouse gas emissions by about 3%.

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利用废玻璃粉、纳米二氧化硅和再生聚丙烯纤维改善可持续轻量化混凝土的非线性性能和抗拉抗压强度

混凝土是可生产的最广泛使用的建筑材料之一，并且有可能向环境中释放大量的二氧化碳。在本研究中，通过对轻质混凝土的研究，尝试用纳米二氧化硅代替部分水泥和废玻璃粉代替骨料来生产具有高强度的环保型轻质混凝土。再生聚丙烯纤维用于提高混凝土的抗压强度和非线性性能。玻璃粉的用量分别占骨料重量的20%、25%和30%，纳米二氧化硅的用量分别占水泥重量的1%、2%和3%，再生纤维(FORTA ferrogreen)的用量分别占水泥重量的0.5%、1%和1.5%。Leca也被用作LW骨料。根据7天和28天的实验结果和场发射扫描电镜分析，最佳样品的纤维含量为1.5%，纳米二氧化硅含量为3%，废玻璃粉含量为25%，28天后的抗压强度和抗拉强度分别约为对照试样的1.7倍和1.6倍。此外，使用3%纳米二氧化硅代替水泥可以减少约3%的温室气体排放。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Nonlinear Engineering - Modeling and Application Multiple-

CiteScore

6.20

自引率

3.60%

发文量

审稿时长

44 weeks

期刊介绍： The Journal of Nonlinear Engineering aims to be a platform for sharing original research results in theoretical, experimental, practical, and applied nonlinear phenomena within engineering. It serves as a forum to exchange ideas and applications of nonlinear problems across various engineering disciplines. Articles are considered for publication if they explore nonlinearities in engineering systems, offering realistic mathematical modeling, utilizing nonlinearity for new designs, stabilizing systems, understanding system behavior through nonlinearity, optimizing systems based on nonlinear interactions, and developing algorithms to harness and leverage nonlinear elements.