摘要
采用氯离子自然扩散试验和氯离子渗透快速试验(ASTMC1202),研究了粉煤灰对再生混凝土氯离子渗透性的影响。试验结果表明:掺粉煤灰能有效提高再生混凝土抗氯离子渗透能力;随粉煤灰掺量的增加,再生混凝土抗氯离子渗透能力是先增强后减弱,粉煤灰的最佳掺量为20%;定量评价再生混凝土氯离子渗透性时,宜采用氯离子自然扩散试验法。
The influence of fly ash on chloride ion penetrate of recycled aggregate concrete is investigated by the test of chloride ion natural dif-fusion and of chloride ion rapid electric transpor（tASTM C1202）.The result shows that penetration of chloride ion can be decline effectively when fly ash is added into the recycled aggregate concrete;The increase of fly ash replacement can decrease the capacity of chloride ion penetrating into recycled aggregate concrete,after increase;20%replacement of cement with fly ash is optimum;The test of chloride ion natural diffusion should be used in quantitative assessment chloride ion penetration of recycled aggregate concrete.
出处
《混凝土》
CAS
CSCD
北大核心
2011年第2期72-74,共3页
Concrete
基金
上海海事大学科研基金项目(20100073)
上海海事大学重点学科建设项目(A2010030)
上海市本科教育高地建设项目(B210008G)
关键词
粉煤灰
再生混凝土
孔结构
氯离子渗透性
fly ash
recycled aggregate concrete
pore structure
chloride ion penetration
