废硫含量对自密实混凝土性能的影响

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2020-04-20 DOI:10.3989/mc.2020.06919

A. Savić, Sanja Martinović, M. Vlahović, T. Volkov-Husović

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引用次数: 1

摘要

自密实混凝土(SCC)含有石灰石粉等细矿物填料。这项研究的想法是用废硫部分取代石灰石，因为它是疏水的，不溶于水，因此是化学惰性的，并比较生产的混凝土样品的性能。新拌混凝土的性能包括:坍落度、t500、v漏斗时间、l箱比、离析比、密度和夹带空气含量。对硬化混凝土进行了抗压、抗弯和粘结强度、超声速度、动弹性模量、动泊松比和微观结构测试。流动性和偏析增加，而容重、抗压和抗折强度、动弹性模量和超声速度略有下降。t500倍、v型漏斗时间、l箱比、夹带风量变化不显著。考虑到在废物增值的情况下，所有的性能都应该保持或改善，并且制定的标准应该满足SCC的要求，本研究证明所有的混合物都可以用于结构应用。

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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Effects of waste sulfur content on properties of self-compacting concrete

Self-compacting concrete (SCC) contains fine mineral fillers such as limestone powder. The idea of this study was to partially replace limestone with waste sulfur since it is hydrophobic, insoluble in water and therefore chemically inert and to compare the properties of produced concrete samples. Fresh concrete properties included: slump-flow, t500, V-funnel time, L-box ratio, segregation ratio, density, and entrained air content. Hardened concrete was tested for compressive, flexural and bond strengths, ultrasonic velocity, dynamic elasticity modulus, dynamic Poisson’s ratio, and microstructure. Flowability and segregation increased, while bulk density, compressive and flexural strength, dynamic elasticity modulus and ultrasonic velocity slight declined. Times t500 and V-funnel time, L-box ratio and entrained air changed insignificantly. Considering that all properties should remain or improve in case of waste valorization and the criteria should set to satisfy requirements for SCC, this study proved that all mixtures can be used for structural applications.

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.