可再分散乳胶粉对石膏基自流平砂浆性能的影响

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发布时间：2020-01-06 00:00:00

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可再分散乳胶粉对石膏基自流平砂浆性能的影响

Effect of Redispersible Latex Powder on Properties of Gypsum-based Self-leveling Mortar

2023年第1期

石膏基自流平砂浆；可再分散乳胶粉；工作性；力学性能；耐水性能；微观结构

Gypsum-based self-leveling mortar; Redispersible latex powder; Workability; Mechanical property; Water resistance; Microstructure

2023年第1期

10.19761/j.1000-4637.2023.01.070.04

聂宗浩1，岳雪涛1，夏芙蓉1，于成鑫1，闫浩康2，刘诚诚3

1.山东建筑大学材料科学与工程学院，山东济南 250101；2.山东铁工科技有限公司，山东济南 250101；3.中建八局第一建设有限公司，山东济南 250000

聂宗浩1，岳雪涛1，夏芙蓉1，于成鑫1，闫浩康2，刘诚诚3

聂宗浩,岳雪涛,夏芙蓉,等.可再分散乳胶粉对石膏基自流平砂浆性能的影响[J].混凝土与水泥制品,2023(1):70-73.

NIE Z H,YUE X T,XIA F R,et al.Effect of Redispersible Latex Powder on Properties of Gypsum-based Self-leveling Mortar YU Cheng-xin, YAN Hao-kang, LIU Cheng-cheng[J].China Concrete and Cement Products,2023(1):70-73.

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1000

摘要：以脱硫石膏为主要胶凝材料，掺入普通硅酸盐水泥和外加剂，制备了石膏基自流平砂浆，研究了不同掺量（0、1%、2%、3%、4%）的可再分散乳胶粉对石膏基自流平砂浆工作性、力学性能和耐水性能的影响，并采用XRD和SEM进行了微观分析。结果表明：掺入适量的可再分散乳胶粉能够提高石膏基自流平砂浆的流动度；可再分散乳胶粉的掺入降低了石膏基自流平砂浆的抗压强度、抗折强度和耐水性能，同时降低了压折比，从而提高了石膏基自流平砂浆的韧性和抗裂性，降低了脆性；石膏基自流平砂浆的水化产物主要为二水石膏、钙矾石等。 Abstract: Using desulfurization gypsum as the main cementitious material, mixed with ordinary silicate cement and admixtures, the gypsum-based self-leveling mortar was prepared. The effects of different contents(0, 1%, 2%, 3%, 4%) of redispersible latex powder on the workability, mechanical properties and water resistance of gypsum-based self-leveling mortar were studied, and the microscopic analysis was carried out by XRD and SEM. The results show that adding appropriate content of redispersible latex powder can improve the fluidity of gypsum-based self-leveling mortar. The addition of redispersible latex powder reduces the compressive strength, flexural strength and water resistance of gypsum-based self-leveling mortar, and reduces the compression flexural ratio, thereby improving the toughness and crack resistance of gypsum-based self-leveling mortar and reducing brittleness. The hydration products of gypsum-based self-leveling mortar are gypsum dihydrate, ettringite and so on.

英文名 : Effect of Redispersible Latex Powder on Properties of Gypsum-based Self-leveling Mortar

刊期 : 2023年第1期

关键词 : 石膏基自流平砂浆；可再分散乳胶粉；工作性；力学性能；耐水性能；微观结构

Key words : Gypsum-based self-leveling mortar; Redispersible latex powder; Workability; Mechanical property; Water resistance; Microstructure

刊期 : 2023年第1期

DOI : 10.19761/j.1000-4637.2023.01.070.04

文章编号 :

基金项目 :

作者 : 聂宗浩1，岳雪涛1，夏芙蓉1，于成鑫1，闫浩康2，刘诚诚3

单位 : 1.山东建筑大学材料科学与工程学院，山东济南 250101；2.山东铁工科技有限公司，山东济南 250101；3.中建八局第一建设有限公司，山东济南 250000

聂宗浩1，岳雪涛1，夏芙蓉1，于成鑫1，闫浩康2，刘诚诚3

聂宗浩,岳雪涛,夏芙蓉,等.可再分散乳胶粉对石膏基自流平砂浆性能的影响[J].混凝土与水泥制品,2023(1):70-73.

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引用本文

Abstract: Using desulfurization gypsum as the main cementitious material, mixed with ordinary silicate cement and admixtures, the gypsum-based self-leveling mortar was prepared. The effects of different contents(0, 1%, 2%, 3%, 4%) of redispersible latex powder on the workability, mechanical properties and water resistance of gypsum-based self-leveling mortar were studied, and the microscopic analysis was carried out by XRD and SEM. The results show that adding appropriate content of redispersible latex powder can improve the fluidity of gypsum-based self-leveling mortar. The addition of redispersible latex powder reduces the compressive strength, flexural strength and water resistance of gypsum-based self-leveling mortar, and reduces the compression flexural ratio, thereby improving the toughness and crack resistance of gypsum-based self-leveling mortar and reducing brittleness. The hydration products of gypsum-based self-leveling mortar are gypsum dihydrate, ettringite and so on.

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可再分散乳胶粉对石膏基自流平砂浆性能的影响

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