Polyimide strengthened cement mortar

IF 17.7 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY Accounts of Chemical Research Pub Date : 2024-08-12 DOI:10.1515/polyeng-2024-0114

B. Poyraz, Mustafa Dayi

引用次数: 0

Abstract

This study examined the effects of silane-modified polyimide polymer (PIS) on cement mortar. The PIS was added to replace cement in a specified ratio. Obtained results revealed that the PIS caused retardation on setting time, and accelerated UPV mostly by encapsulating unhydrated cement particles, filling pores, or reacting with C–S–H and Ca(OH)2 with shifting to Si–O vibrations. SEM results showed a good compact interface without forming considerable agglomeration and voids on the microstructure, and this improved flexural and compressive strength properties. In conclusion, silane-modified polyimide as an admixture or cement replacement can be recommended for construction industries to enhance the properties of cement mortar.

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聚酰亚胺强化水泥砂浆

本研究考察了硅烷改性聚酰亚胺聚合物（PIS）对水泥砂浆的影响。PIS 按特定比例添加，以取代水泥。研究结果表明，PIS 主要通过包裹未水化的水泥颗粒、填充孔隙或与 C-S-H 和 Ca(OH)2 发生反应并转移至 Si-O 振动，从而导致凝结时间延缓并加速 UPV。扫描电子显微镜结果表明，硅烷改性水泥具有良好的密实界面，在微观结构上没有形成大量团聚和空隙，从而提高了抗折和抗压强度性能。总之，硅烷改性聚酰亚胺作为一种外加剂或水泥替代品，可推荐用于建筑行业，以提高水泥砂浆的性能。

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.

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