Damage behaviours of concrete and prediction models under the joint effect of freeze-thaw attack and ultraviolet radiation

被引：6

作者：

Wang, R. J. ^{[1
]}

Qin, R. ^{[1
]}

Li, Y. ^{[1
]}

Li, J. X. ^{[2
]}

Zhang, C. ^{[1
]}

机构：

[1] Xian Univ Technol, State Key Lab Ecohydraul Northwest Arid Reg China, Xian, Shaanxi, Peoples R China

[2] Univ New South Wales, Coll Civil & Environm Engn, Sydney, NSW, Australia

来源：

MATERIALES DE CONSTRUCCION | 2019年 / 69卷 / 335期

基金：

中国国家自然科学基金;

关键词：

Concrete; Freezing/thawing; Scanning Electron Microscopy (SEM); Durability; Flexural strength; FLY-ASH; MECHANICAL-PROPERTIES; COMPRESSIVE STRENGTH; HIGH-VOLUME; DURABILITY; SULFATE; CYCLES; RESISTANCE; CORROSION; STEEL;

D O I：

10.3989/mc.2019.12018

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

The study investigated the joint effect of freeze-thaw attack and ultraviolet (UV) radiation on concrete. Mass loss ratio, relative dynamic modulus of elasticity (RDME) and flexural strength of concrete were experimentally investigated. A two-way ANOVA was used to analyse the effect of UV radiation on the test results. Water-binder ratio significantly affected the mass loss ratio, RDME and flexural strength. Meanwhile, UV radiation only had a significant effect on mass loss ratio but had no evident effect on RDME and flexural strength. Concrete microstructure was demonstrated by microscopic analysis via scanning electron microscope to explore the insight into the damage evolution of concrete under the joint effect. Prediction models of the damage degree of concrete were proposed by incorporating the results in this investigation. Comparison results showed that the prediction values were consistent with the experimental values.

引用

页数：13

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