同济大学学报（自然科学版）2018，Vol.46Issue(1)：87-93,7.DOI:10.11908/j.issn.0253-374x.2018.01.013
钢渣对磷酸盐水泥基材料性能的影响机制
Effect and Mechanism of Steel Slag on Performance of Magnesium Phosphate Cements
摘要
Abstract
This work investigated the feasibility of reusing steel slag as raw materials in preparing magnesium phosphate cement (MPC).The effect of steel slag on the setting time,hydration process,mechanical properties and microstructure of prepared cements was determined.The results show that the influence of steel slag on the performance of magnesium phosphate cement exhibits a similar trend as that of fly ash.The addition of 10％ steel slag would accelerate the hardening of prepared cement due to the presence of CaO and the formed calcium hydroxide.The hardness of steel slag would also increase the compressive strength.With increasing the steel slag substitutional level,the content of hydration products would decreases,while the porosity increases and micorstructure become loose as a result.The hydration of fCaO would do a detrimental effect on the mechanical properties of MPC.The hydration products detected in X-ray diffraction(XRD) patterns of steel slag blended MPC is the same as those of reference.However,there is more microcrack present in the hardened paste containing 40％ of steel slag.关键词
磷酸盐水泥/钢渣/粉煤灰/性能/机制Key words
magnesium phosphate cement/steel slag/fly ash/performance/mechanism分类
建筑与水利引用本文复制引用
吴凯,叶钰燕,施惠生,居正慧..钢渣对磷酸盐水泥基材料性能的影响机制[J].同济大学学报（自然科学版）,2018,46(1):87-93,7.基金项目
“十三五”国家重点研发计划(2016YFC0700802),国家自然科学基金(51608382,51378390,51402216),污染控制与资源化研究国家重点实验室开放课题 （2016YFC0700802）
