摘要
在分析大型海工工程对混凝土耐久性设计要求的基础上,通过对水泥、矿粉、粉煤灰、硅灰等材料的Cl-初始固化力测定及其在混凝土中Cl-渗透性实验,研究了原材料本身及其在硬化体中对混凝土渗透性的影响。结果表明:(1)原材料对Cl-的初始固化能力依次为:水泥>粉煤灰>硅灰>矿粉;(2)矿物掺和料能改善混凝土硬化体结构,有利于提高混凝土的抗渗性。随着粉煤灰、矿粉、硅灰等矿物掺和料掺量的提高,混凝土抗渗能力提高;而复掺能够达到强度、工作性和抗渗透性的综合最佳效应。
Analysed the requirement of concrete durability for large scale ocean engineering, and tested Cl- initial solidification strength of cement, slag, fly ash, etc along with their Cl- osmosis in concrete. Based on the results, influence of raw material itself and in hardened system on concrete osmotic were studied. The results are as follows: (1) for Cl- initial solidification strength of different raw material, the order is cement>fly ash>silicon ash > slag; (2) mineral blend could improve the structure of hardened concretet which is benefit for increasing concrete penetrability. Concrete penetrability increases with the increase of mineral blend,ie fly ash,silicon ash and slag,etc. Compound-blending would reach the best synthetical effect of intensity,working ability and penetrability.
出处
《水泥工程》
CAS
2005年第2期31-34,45,共5页
Cement Engineering
基金
国家863计划资助项目(2002AA335050)
