基于吸水动力学方法的水溶性渗透结晶材料吸收饱和度及养护时间优化研究  

Optimization of absorption saturation degree and curing period of water-soluble infiltration capillary/crystalline waterproof material based on water absorption kinetic method

作　　者：李杨 曹亚 钟聚光 周世华[1] 齐立亮 LI Yang;CAO Ya;ZHONG Juguang;ZHOU Shihua;QI Liliang(Institute of Materials and Structure,Changjiang River Scientific Research Institute of Changjiang Water Resources Commission,Wuhan 430010,China;Hunan Pingjiang Pumped Storage Power Station Co.,Ltd.,Yueyang 414500,China;Beijing Yishengyuan Environmental Engineering Co.,Ltd.,Beijing 100010,China)

机构地区：[1]长江水利委员会长江科学院材料与结构研究所,湖北武汉430010 [2]湖南平江抽水蓄能有限公司,湖南岳阳414500 [3]北京易晟元环保工程有限公司,北京100010

出　　处：《水利水电科技进展》2023年第5期94-99,共6页Advances in Science and Technology of Water Resources

基　　金：国家自然科学基金项目(U2040222);中央级公益性科研院所基本科研业务费专项资金资助项目(CKSF2021456/CL);水利部示范项目(SF-2021-02)。

摘　　要：以水利工程中常用的C25混凝土为研究对象,采用吸水动力学方法试验研究了混凝土对水溶性渗透结晶(WCCW)材料的吸收特性,并分析了WCCW材料吸收饱和度及养护时间对混凝土吸水率、吸水动力学参数的影响。结果表明:混凝土对WCCW材料的吸收遵循吸水动力学规律,2 h内吸收饱和度的增加速度较快,8 h的吸收饱和度可达94%;随着WCCW材料吸收饱和度的增加或养护时间的延长,混凝土饱和吸水率降低,而吸水动力学参数α减小,参数λ增加。吸水动力学参数与WCCW材料吸收饱和度、养护时间之间存在幂函数关系;优化的WCCW材料吸收饱和度为60%时经济性较好,并且混凝土吸收WCCW材料8 h后可初次养护,比较合理的养护时间是7 d,过短的养护时间难以保证作用效果。The commonly used C25 concrete was selected as the research object and the water absorption kinetic method was employed to investigate the absorption characteristics of concrete to the water-soluble infiltration capillary/crystalline waterproof(WCCW)material.Moreover,the influences of absorption saturation degree and curing period on water absorption rate and water absorption kinetic parameters were examined.The results reveal that absorption process of concrete to WCCW material conforms to the water absorption law,in which the absorption saturation degree increases rapidly during the initial 2 h,and it can reach 94%after immersion for 8 h.With the rising of absorption saturation degree and elapse of curing periods,the saturated water absorption rate decreases,while the water adsorption kinetics parameterαreduces andλincreases.Power law relationship exists between absorption saturation degree of WCCW material and water absorption kinetic parameters or the curing period.The economical absorption saturation degree after optimization is 60%.Concrete needs to be cured after absorbing WCCW material for 8 h.A more reasonable curing period is 7 d and shorter curing period is doubtful to the final quality.

关 键 词：渗透结晶材料 水溶性 吸收率 养护 吸水动力学 

分 类 号：TV431[水利工程—水工结构工程]