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膨润土的品质及掺量对混凝土力学性能影响研究

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膨润土掺入混凝土能够显著改变其力学性能.文中选用三种膨润土,掺量分别为1%、2%、3%和 4%,制备混凝土试块进行标准养护,测试混凝土试块抗压强度、劈裂抗拉强度及电通量,并与相同配合比下未掺膨润土的混凝土性能进行比较.研究结果表明,掺入1%~4%的膨润土均能有效提升混凝土试块的抗压强度和劈裂抗拉强度值,在掺量为1%和3%时强度出现两个峰值,显示出明显的波动趋势.在相同膨润土掺量下,不同种类的膨润土对混凝土力学性能的影响存在显著差异.膨润土掺入量为 2%时,三种掺膨润土的混凝土试块的电通量值都最小.
Study on the Influence of the Quality and Dosage of Bentonite on the Mechanical Properties of Concrete
The incorporation of bentonite into concrete can significantly change its mechanical properties.Three kinds of bentonite are selected in this test,with the amount of 1%,2%,3%and 4%for standard curing,test the compressive strength,split tensile strength and electric flux of concrete test block,and compare the performance of bentonite concrete with the same mix ratio.The results show that 1%to 4%ben-tonite can effectively improve the compressive strength and split tensile strength value of the concrete test block,and the strength has two peaks at 1%and 3%,showing obvious fluctuation trend.Different kinds of bentonite showed significant differences on their mechanical properties under the same bentonite content.When the amount of bentonite is 2%,the electrical flux value of the three kinds of concrete test mixed with bentonite is the minimum.

BentoniteConcreteCompressive strengthCracking tensile strengthImpermeable performance

沈乐、陈国新、沈豪鑫

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嘉兴大学建筑工程学院,浙江 嘉兴 314000

膨润土 混凝土 抗压强度 劈裂抗拉强度 抗渗性能

2024

江西建材
江西省建材科研设计院

江西建材

影响因子:2.247
ISSN:1006-2890
年,卷(期):2024.(10)