Durability of Recycled Concrete after Reinforcing the Aggregates with Permeable Crystalline Materials

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2024-03-07 DOI:10.1155/2024/9978563

Jinsong Liao, Fuhai Li, Jing Gong, Lei Zhao, Xi Tong, Xinxin Li

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Abstract

The utilization of recycled aggregate can significantly mitigate the extraction of natural sand and gravel. However, the practical application of recycled aggregate in engineering is impeded by its inherent characteristics, encompassing high water absorption, high crushing, and low apparent density. This study employed a soaking and air-drying method to enhance the strength of three types of aggregates with varying initial strengths by utilizing permeated crystalline materials. The durability of recycled aggregate concrete (RAC) was studied with three different aggregate replacement rates (0%, 50%, and 100%). The test results demonstrate that the slump, compressive strength, freeze resistance, and carbonation resistance of RAC exhibit a decreasing trend as the aggregate replacement rate increases. The freeze resistance and carbonation resistance of RAC are notably enhanced after incorporating permeated crystalline material. This study contributes to a sustainable and efficient solution for the treatment of construction waste, thereby enhancing the utilization rate of recycled concrete.

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用透水结晶材料增强骨料后再生混凝土的耐久性

利用再生骨料可以大大减少天然砂石的开采量。然而，由于再生骨料具有高吸水性、高压碎性和低表观密度等固有特性，其在工程中的实际应用受到了阻碍。本研究采用浸泡和风干的方法，利用渗透结晶材料提高三种初始强度不同的骨料的强度。研究了三种不同骨料替代率（0%、50% 和 100%）的再生骨料混凝土（RAC）的耐久性。试验结果表明，随着骨料替代率的增加，再生骨料混凝土的坍落度、抗压强度、抗冻性和抗碳化性均呈下降趋势。加入渗透结晶材料后，RAC 的抗冻性和抗碳化性明显增强。这项研究有助于为建筑垃圾的处理提供一种可持续的高效解决方案，从而提高再生混凝土的利用率。

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

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.