寒区公路泡沫混凝土抗冻融性能试验研究  

Experimental study on frost resistance of highway foamed concrete incold area

作　　者：陈海洋 Chen Haiyang(Heilongjiang Longjian Road and Bridge Second Engineering Co.,Ltd.,Harbin Heilongjiang 150027,China)

机构地区：[1]黑龙江省龙建路桥第二工程有限公司,黑龙江哈尔滨150027

出　　处：《山西建筑》2024年第5期111-113,共3页Shanxi Architecture

基　　金：黑龙江省自然科学基金项目(LH2023E010)。

摘　　要：通过改变泡沫混凝土的水胶比、水泥掺量、粉煤灰掺量及矿粉掺量,测试冻融循环作用下试件抗压强度,利用正交实验选出最优方案和最显著因素,并通过F50冻融循环试验,分析冻融循环后的冻融质量损失率与冻融强度损失率规律。结果表明:经历冻融循环作用后,相较未涂防水涂料的泡沫混凝土,外涂有机硅烷防水涂料的泡沫混凝土抗压强度高出10%左右;无论试件涂刷有机硅烷防水涂料与否,正交实验选出的最优组合均为A1B3C3D1;所设计的9组试样均满足F50冻融循环试验要求。By changing the water-binder ratio,cement content,fly ash content and mineral powder content of foamed concrete,the compressive strength of specimens under freeze-thaw cycle was tested,and the optimal scheme and the most significant factor were selected by orthogonal experiment.F50 freeze-thaw cycle test was used to analyze the loss rate of freeze-thaw quality and strength after freeze-thaw cycle.The results show that the compressive strength of foamed concrete coated with organosilane waterproof coating is about 10%higher than that of foamed concrete without waterproof coating after freeze-thaw cycle.Whether the specimen brushing organosilane waterproof coating or not,the optimal combination selected by orthogonal experiment is A1B3C3D1;All the nine designed samples meet the requirements of F50 freeze-thaw cycle test.

关 键 词：泡沫混凝土 寒区 抗冻融性能 防水涂料 

分 类 号：TU528.2[建筑科学—建筑技术科学]