摘要
采用内掺法,在以轻烧白云石粉为原料制备的碱式硫酸镁水泥(basic magnesium sulfate cement,BMSC)中添加不同掺量轻烧菱镁矿粉,并通过研究其凝结时间、抗压强度、抗折强度、流动度、水泥放热速率等,结合XRD、SEM分析其水化产物组成、微观形貌,分析轻烧菱镁矿粉的掺量对以轻烧白云石粉为原料制备的BMSC的影响。实验现象表明,在以轻烧白云石粉为原料制备的BMSC中添加轻烧菱镁矿粉能有效提高抗压强度和抗折强度,缩短凝结时间,提高其耐水性能,但其流动度下降。
The internal blending method was adopted to control the effect of light-burned magnesite powder on basic magnesium sulfate cement(BMSC)prepared by light-burned dolomite powder.The setting time,compressive strength,flexural strength,fluidity,hydration-heat release rate,X-ray diffraction and scanning electron microscopy were adopted to assess the effects of light-burned magnesite powder on BMSC prepared by light-burned dolomite powder.The experimental results show that adding light-burned magnesite powder to BMSC prepared by light-burned dolomite powder can effectively improve the compressive strength and flexural strength,shorten its setting time and improve the water resistance,but the fluidity decreases.
作者
陈远基
吴成友
陈方宇
陈聪
余红发
CHEN Yuan-ji;WU Cheng-you;CHEN Fang-yu;CHEN Cong;YU Hong-fa(School of Civil Engineering,Qinghai University,Xining 810016,China;Department of Civil Engineering,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China)
出处
《硅酸盐通报》
CAS
CSCD
北大核心
2018年第8期2506-2511,共6页
Bulletin of the Chinese Ceramic Society
基金
国家自然科学基金(51662035
U1407104)
青海省科技基础条件平台(2018-ZJ-T01)
青海大学大学生创新创业训练计划创业扶持项目(2017-CY-04)
关键词
碱式硫酸镁水泥
力学性能
凝结时间
basic magnesium sulfate cement
mechanical property
setting time
