摘要
测试了石粉含量(质量分数)对不同强度等级机制砂混凝土强度、抗氯离子渗透性能和抗冻性能的影响。结果表明:随着机制砂中石粉含量的增加,低强度机制砂混凝土的抗氯离子渗透性能提高,而抗冻性能降低,尤其是当石粉含量高于10%(石粉与水泥体积比超过1:3.47)时,低强度机制砂混凝土抗冻性劣化明显;当石粉含量大于7%时,高强机制砂混凝土工作性劣化,而当石粉含量从3.5%提高到14%,高强机制砂混凝土的抗氯离子渗透性能和抗冻性能均未降低。
The effects of different stone dust (SD) content in manufactured sand (MS) on the compressive strength, permeability of chloride ions and resistance to freezing of different strength grade concrete are investigated. The results show that with the increase of SD content in MS, the resistance to chlorine permeability of low-strength concrete is improved, but the resistance to freezing de- creases. When the SD content is higher than 10% (the volume ratio of SD to cement exceeds 1:3.47), the MS concrete shows a...
出处
《硅酸盐学报》
EI
CAS
CSCD
北大核心
2008年第4期482-486,共5页
Journal of The Chinese Ceramic Society
基金
西部交通建设科技(200331881106)资助项目
关键词
机制砂
石粉
抗冻性
氯离子渗透系数
manufactured-sand concrete
stone-dust
resistance to freezing
chlorine ion permeability coefficient
