聚丙烯纤维对沙漠砂自密实混凝土性能影响的研究

孟海瑞, 吴岱錡, 王瑨, 何妤超

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塑料科技 ›› 2024, Vol. 52 ›› Issue (02) : 72-74. DOI: 10.15925/j.cnki.issn1005-3360.2024.02.015
加工与应用

聚丙烯纤维对沙漠砂自密实混凝土性能影响的研究

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Study on Effect of Polypropylene Fiber on Properties of Desert Sand Self-Compacting Concrete

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摘要

文章通过正交试验,研究了水胶比、粉煤灰掺量、沙漠砂替代率及聚丙烯纤维掺量对沙漠砂自密实混凝土28 d抗折强度的影响规律,通过极差分析确定了最佳配比,并对最佳配比下的沙漠砂自密实混凝土性能进行验证。结果表明,制备条件对混凝土28 d抗折强度的影响排序为:沙漠砂替代率 >水胶比 >聚丙烯纤维掺量 >粉煤灰掺量,最佳参数组合为A1B3C3D3。与ASC-0相比,ASC-3组的开裂抑制率高达54%,干缩率降低了18.3%。因此,聚丙烯纤维能够改善沙漠砂混凝土的力学性能、抗裂性能及抗收缩性。

Abstract

The influence of water-glue ratio, fly ash content, desert sand substitution rate and polypropylene fiber content on the 28 d flexural strength of desert sand self-compacting concrete was studied through orthogonal test. The results show that the effects of preparation conditions on the flexural strength of concrete at 28 d are in the order of desert sand substitution rate>water-glue ratio>polypropylene fiber content>fly ash content, and the optimal parameter combination is A1B3C3D3. Compared with ASC-0, the cracking inhibition rate of the ASC-3 group is as high as 54%, and the dry shrinkage rate is reduced by 18.3%. Therefore, polypropylene fiber can improve the mechanical properties, crack resistance and shrinkage resistance of desert sand concrete.

关键词

自密实混凝土 / 沙漠砂 / 聚丙烯纤维 / 抗折强度 / 抗裂性能

Key words

Self-compacting concrete / Desert sand / Polypropylene fiber / Flexural strength / Crack resistance

中图分类号

TU528

引用本文

导出引用
孟海瑞 , 吴岱錡 , 王瑨 , . 聚丙烯纤维对沙漠砂自密实混凝土性能影响的研究. 塑料科技. 2024, 52(02): 72-74 https://doi.org/10.15925/j.cnki.issn1005-3360.2024.02.015
MENG Hai-rui, WU Dai-qi, WANG Jin, et al. Study on Effect of Polypropylene Fiber on Properties of Desert Sand Self-Compacting Concrete[J]. Plastics Science and Technology. 2024, 52(02): 72-74 https://doi.org/10.15925/j.cnki.issn1005-3360.2024.02.015

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河南省科技攻关项目(222102320358)

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