混合再生细骨料水泥砂浆性能试验研究_《混凝土与水泥制品》杂志社

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发布时间：2020-01-06 00:00:00

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混合再生细骨料水泥砂浆性能试验研究

Experimental Study on the Properties of Mixed Recycled Fine Aggregate Mortar

2022年第9期

再生细骨料；水泥砂浆；流动性；力学性能；干燥收缩性能

Fine recycled aggregate; Cement mortar; Mobility; Mechanical property; Drying shrinkage

2022年第9期

10.19761/j.1000-4637.2022.09.092.04

马加存1，杨永富2，段淑芸1，张晓萌2，迟朝明3，葛智4，庄培芝4

1.山东省路桥集团有限公司，山东济南 250014；2.山东省交通科学研究院，山东济南 250102； 3.山东高速集团有限公司，山东济南250098；4.山东大学齐鲁交通学院，山东济南250002

马加存1，杨永富2，段淑芸1，张晓萌2，迟朝明3，葛智4，庄培芝4

马加存,杨永富,段淑芸,等.混合再生细骨料水泥砂浆性能试验研究[J].混凝土与水泥制品,2022(9):92-94,105.

MA J C,YANG Y F,DUAN S Y,et al.Experimental Study on the Properties of Mixed Recycled Fine Aggregate Mortar[J].China Concrete and Cement Products,2022(9):92-94,105.

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1000

摘要：研究了废弃混凝土和废弃黏土砖制成的混合再生细骨料的掺量（0、30%、60%、100%）和预湿时长（0、1/6 h、24 h）对砂浆流动性、抗压强度、抗折强度和干燥收缩性能的影响。结果表明：砂浆的初始流动度和流动度经时损失率随着再生细骨料掺量和预湿时长的增加而降低；随着再生细骨料掺量的增加，砂浆的抗压强度降低，抗折强度变化较小；砂浆的抗压、抗折强度随着再生细骨料预湿时长的增加呈增大趋势；由于再生细骨料的内养护作用，砂浆的干燥收缩量随再生细骨料掺量和预湿时长的增加呈减小趋势。 Abstract: The effects of the content (0, 30%, 60%, 100%) and pre-wetting time (0, 1/6 h, 24 h) of mixed recycled fine aggregate made from waste concrete and waste clay bricks on the fluidity, compressive strength, flexural strength and drying shrinkage properties of mortar were studied. The results show that the initial fluidity and fluidity loss rate of mortar decrease with the increase of recycled fine aggregate content and pre-wetting time. With the increase of recycled fine aggregate content, the compressive strength of mortar decreases, and the change of flexural strength is small. The compressive and flexural strengths of mortar tend to increase with the increase of pre-wetting time of recycled fine aggregate. Due to the internal curing effect of recycled fine aggregate, the drying shrinkage of mortar decreases with the increase of recycled fine aggregate content and pre-wetting time.

英文名 : Experimental Study on the Properties of Mixed Recycled Fine Aggregate Mortar

刊期 : 2022年第9期

关键词 : 再生细骨料；水泥砂浆；流动性；力学性能；干燥收缩性能

Key words : Fine recycled aggregate; Cement mortar; Mobility; Mechanical property; Drying shrinkage

刊期 : 2022年第9期

DOI : 10.19761/j.1000-4637.2022.09.092.04

文章编号 :

基金项目 :

作者 : 马加存1，杨永富2，段淑芸1，张晓萌2，迟朝明3，葛智4，庄培芝4

单位 : 1.山东省路桥集团有限公司，山东济南 250014；2.山东省交通科学研究院，山东济南 250102； 3.山东高速集团有限公司，山东济南250098；4.山东大学齐鲁交通学院，山东济南250002

马加存1，杨永富2，段淑芸1，张晓萌2，迟朝明3，葛智4，庄培芝4

马加存,杨永富,段淑芸,等.混合再生细骨料水泥砂浆性能试验研究[J].混凝土与水泥制品,2022(9):92-94,105.

MA J C,YANG Y F,DUAN S Y,et al.Experimental Study on the Properties of Mixed Recycled Fine Aggregate Mortar[J].China Concrete and Cement Products,2022(9):92-94,105.

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摘要

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结论

参考文献

引用本文

Abstract: The effects of the content (0, 30%, 60%, 100%) and pre-wetting time (0, 1/6 h, 24 h) of mixed recycled fine aggregate made from waste concrete and waste clay bricks on the fluidity, compressive strength, flexural strength and drying shrinkage properties of mortar were studied. The results show that the initial fluidity and fluidity loss rate of mortar decrease with the increase of recycled fine aggregate content and pre-wetting time. With the increase of recycled fine aggregate content, the compressive strength of mortar decreases, and the change of flexural strength is small. The compressive and flexural strengths of mortar tend to increase with the increase of pre-wetting time of recycled fine aggregate. Due to the internal curing effect of recycled fine aggregate, the drying shrinkage of mortar decreases with the increase of recycled fine aggregate content and pre-wetting time.

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