煤矸石-Ca(OH)2-H2O体系火山灰反应程度研究  

Study on Pozzolanic Reaction Degree in Calcined Coal Gangue-Ca(OH)_2-H_2O System

作　　者：顾炳伟[1] 王培铭[1] 

机构地区：[1]同济大学先进土木工程材料教育部重点实验室

出　　处：《同济大学学报（自然科学版）》2008年第2期222-226,共5页Journal of Tongji University:Natural Science

基　　金：国家“九七三”重点基础研究发展规划资助项目(2001CB610704)

摘　　要：借助于示差扫描量热分析(DSC)对不同煤矸石—Ca(OH)2—H2O体系的不同龄期样品的Ca(OH)2质量分数的测定,研究了不同煤矸石—Ca(OH)2—H2O体系的火山灰反应程度.研究结果表明:在不掺激发剂时,火山灰反应消耗的Ca(OH)2量和体系的初始Ca(OH)2含量有关,存在一最佳的Ca(OH)2初始含量;掺入适量的Na2SO4可以使得体系的火山灰反应程度在较短龄期内得到显著的提高;在标准养护条件下,体系的火山灰反应程度稍高于水养护.The pozzolanic reaction degrees for different calcined coal gangue-Ca（OH）2- H2O systems was studied by determining the content of Ca（OH）2 in the samples with different curing periods. The results show that the consumed content of Ca（OH）2 in pozzolanic reaction in the system without admixture is related to the initiative content of Ca（OH）2 in the system. An optimistic initiative content of Ca（OH）2 is found. The pozzolanic reaction degrees may improve sharply in short curing periods with a suitable content of Na2SO4 being added into the system. The pozzolanic reaction degree in the system with standard curing is higher than that with water curing.

关 键 词：煤矸石-Ca(OH)2-H2O体系 火山灰反应 程度 

分 类 号：TU52[建筑科学—建筑技术科学] TQ172[化学工程—水泥工业]