硅酸盐通报2024，Vol.43Issue(6)：2031-2038,8.
水工混凝土的超疏水仿生构建及微观机理
Superhydrophobic Biomimetic Construction and Microscopic Mechanism of Hydraulic Concrete
摘要
Abstract
The organic isooctyltriethoxysilane(TS)and inorganic nanosilicon dioxide(nano-SiO2)were combined to prepare monolithic superhydrophobic hydraulic concrete by"binary synergistic"biomimetic method,and the effects of TS dosage and curing conditions on the mechanical properties and hydrophobicity properties of concrete were investigated.The microscopic morphology,phase composition and hydrophobic modification mechanism of materials were analyzed by scanning electron microscopy(SEM),X-ray diffraction(XRD)and fourier transform infrared spectrometer(FT-IR).The results show that the curing conditions have a large influence on the hydrophobicity of concrete.Under natural curing conditions,when TS dosage reaches 3％(mass fraction),the concrete all exhibits superhydrophobicity,with a maximum contact angle of 155.6°.The incorporation of nanoparticles promotes cement hydration and enhances compressive strength of specimens.The modified hydraulic concrete has good hydrophobicity,and the water absorption rate decreases by 68.8％in 288 h immersion.关键词
水工混凝土/异辛基三乙氧基硅烷/接触角/力学性能/吸水率/官能团Key words
hydraulic concrete/isooctyltriethoxysilane/contact angle/mechanical property/water absorption rate/functional group分类
建筑与水利引用本文复制引用
王波,钱军,罗杰,徐怡,储洪强,蒋林华..水工混凝土的超疏水仿生构建及微观机理[J].硅酸盐通报,2024,43(6):2031-2038,8.基金项目
中国长江电力股份有限公司资助(Z422302003) （Z422302003）
