抗裂硅质防水剂对水工混凝土性能的影响  

Effect of crack resistant silicone waterproof agent on properties of hydraulic concrete

作　　者：林海松 黄卓杰 王训怀 韩伟栋 陈建国 LIN Haisong;HUANG Zhuojie;WANG Xunhuai;HAN Weidong;CHEN Jianguo(Nanning Communications Investment Group Co.Ltd.,Nanning 530000,China;Guangxi Research Institute of Water Resources,Nanning 530000,China;Guangxi Key Laboratory of Water Engineering Materials and Structures,Nanning 530000,China;Hohai University,Nanjing 210000,China)

机构地区：[1]南宁交通投资集团有限责任公司,广西南宁530000 [2]广西壮族自治区水利科学研究院,广西南宁530000 [3]广西水工程材料与结构重点实验室,广西南宁530000 [4]河海大学,江苏南京210000

出　　处：《新型建筑材料》2023年第9期1-4,共4页New Building Materials

基　　金：水利部重大科技项目(SKS-2022107)。

摘　　要：为减少水工混凝土的开裂,研究了抗裂硅质防水剂对混凝土力学性能、热学性能、抗渗、抗裂和微观结构的影响。结果表明,5%掺量的抗裂硅质防水剂使混凝土28 d抗压强度提高了3.6%,90 d劈裂抗拉强度高了8.7%,14 d温升值降低了12.3%,抗渗等级从W6提升到W12,抗裂等级从Ⅳ级提升到Ⅰ级,裂缝数量和宽度显著降低。抗裂硅质防水剂有利于提高混凝土的力学、热学、抗渗和抗裂性能。To minimize the crack of hydraulic concrete,the effects of crack resistant silicone waterproof agent on the mechanical properties,thermal properties,impermeability,crack resistance,and microstructure of concrete were studied.The results showed that the compressive strength increased by 3.6%at 28 days,the splitting tensile strength increased by 8.7%at 90 days,the temperature rise decreased by 12.3%at 14 d,the impermeability level increased from W6 to W12,the crack resistance level increased fromⅣtoⅠ,and the number and width of cracks significantly decreased.Crack resistant silicone waterproof agent is beneficial for improving the mechanical,thermal,impermeable,and crack resistance properties of concrete.

关 键 词：硅质防水剂 水工混凝土 力学性能 热学性能 防渗抗裂 

分 类 号：TU572[建筑科学—建筑技术科学]