Experimental study on surface wrapping strengthening of EPS particles and its concrete performance

IF 1.9 4区材料科学 Q3 Materials Science

Science and Engineering of Composite Materials Pub Date : 2022-01-01 DOI:10.1515/secm-2022-0002

Yuanyuan Ji, Li Weilong, Wang Linbing, Wang Jianjun, Yang Hailu, Zhang Wenhua, Xiong Zhenzhen

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引用次数: 3

Abstract

Abstract Expanded polystyrene (EPS) concrete is a low-carbon green building material, which has the properties of thermal insulation, but its strength is not high at present. To improve the strength of EPS concrete, EPS particles were wrapped on the surface by magnesium phosphate cement, ultra-high performance concrete, and waterborne polyurethane, they were used to make concrete after aging, and then the strength and microproperties of concrete were tested. The test results show that the wrapping material form a shell structure on the surface of EPS particles; the hydrophilic property of the wrapped EPS particles and the uniformity of the concrete have been significantly improved; the contact between the wrapped EPS particles and the cement base has become more closer; the cube compressive strength of concrete is increased by 80–110%, the flexural strength of concrete is increased by 40–90%. The research results of this study are of great significance for EPS concrete used as structural material and fabricated lightweight wallboard.

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EPS颗粒表面包覆强化及其混凝土性能试验研究

摘要发泡聚苯乙烯（EPS）混凝土是一种低碳绿色建筑材料，具有隔热性能，但目前强度不高。为了提高EPS混凝土的强度，采用磷酸镁水泥、超高性能混凝土和水性聚氨酯将EPS颗粒包裹在混凝土表面，在老化后用于制备混凝土，并对混凝土的强度和微观性能进行了测试。试验结果表明，包裹材料在EPS颗粒表面形成外壳结构；包裹的EPS颗粒的亲水性和混凝土的均匀性得到了显著改善；包裹的EPS颗粒与水泥基体之间的接触变得更加紧密；混凝土立方体抗压强度提高80～110%，抗弯强度提高40～90%。本研究成果对EPS混凝土作为结构材料和装配式轻质墙板具有重要意义。

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

Science and Engineering of Composite Materials 工程技术-材料科学：复合

CiteScore

3.10

自引率

5.30%

发文量

审稿时长

4 months

期刊介绍： Science and Engineering of Composite Materials is a quarterly publication which provides a forum for discussion of all aspects related to the structure and performance under simulated and actual service conditions of composites. The publication covers a variety of subjects, such as macro and micro and nano structure of materials, their mechanics and nanomechanics, the interphase, physical and chemical aging, fatigue, environmental interactions, and process modeling. The interdisciplinary character of the subject as well as the possible development and use of composites for novel and specific applications receives special attention.