冻融对粉煤灰混凝土碳化性能影响规律研究  

Study of Freezing-thaw on Carbonation Properties Effecting Rules of Fly Ash Concrete

作　　者：牛建刚[1] 闫梁 翟海涛[1] 

机构地区：[1]内蒙古科技大学建筑与土木工程学院,包头014010

出　　处：《混凝土与水泥制品》2013年第12期17-19,共3页China Concrete and Cement Products

基　　金：国家自然科学基金青年基金项目(50908112);内蒙古自然科学基金(2010BS0710);内蒙古科技大学创新基金(2009NC036)

摘　　要：在设计粉煤灰混凝土冻融与碳化耦合试验方案的基础上,开展了实验室模拟试验,研究了不同试验模式下粉煤灰混凝土遭受冻融循环后的碳化深度规律以及粉煤灰掺量对混凝土冻融后碳化深度的影响。引入冻融循环作用对混凝土碳化深度发展的影响系数,分析了冻融与碳化耦合作用机理,得出了冻融和碳化反应在耦合过程中的效应。Based on the coupling test program of fly ash concrete with freezing-thaw and carbonation, the laboratory simulation test is carried out. The laws of carbonation depth of the fly ash concrete suffered the freezing-thaw cycle in different test modes and the influence of fly ash dosage on concrete carbonation depth after the freezing-thaw cycle are studied. Defining the influence coefficient of carbonation depth of concrete under freezing-thaw cycles, the mechanism of coupling of freezing-thaw and carbonation is analyzed, and the roles of freezing-thaw and carbonation in the coupling process are obtained.

关 键 词：粉煤灰混凝土 冻融循环 碳化 耦合机理 

分 类 号：TU528.1[建筑科学—建筑技术科学]