废弃砂浆粉对水泥物理力学性能的影响

硅酸盐通报 ›› 2017, Vol. 36 ›› Issue (9): 3088-3093.

废弃砂浆粉对水泥物理力学性能的影响

丁向群;咸佳蓓;李贺;周向荣

沈阳建筑大学材料科学与工程学院,沈阳,110168

出版日期:2017-09-15 发布日期:2021-01-18
基金资助:
国家自然科学基金(51678374)%国家建筑材料行业科技创新计划(2013-M3-8)%住房和城乡建设部项目(2015-K4-002)

Influence of Waste Mortar Powder on Physical and Mechanical Properties of Cement

DING Xiang-qun;XIAN Jia-bei;LI He;ZHOU Xiang-rong

Online:2017-09-15 Published:2021-01-18

摘要/Abstract

摘要： 研究了废弃砂浆粉对水泥物理力学性能的影响,测试了标准稠度需水量、凝结时间、流动度和强度.结果表明:废弃砂浆粉的掺加导致水泥的标准稠度需水量增加,水泥的凝结时间总体降低,水泥净浆的流动度及流动度损失均呈降低趋势,而减水剂与水灰比对水泥净浆的流动度及流动度损失有较大影响.废弃砂浆粉掺加量的多少将直接影响到水泥砂浆的强度,掺量越大,水泥砂浆强度损失越严重,而掺量低于10%时,水泥砂浆仍具有较高的抗压强度和抗折强度.微观结构特征表明,废弃砂浆粉掺量在一定范围时,水泥砂浆体系中产生钙矾石与C-S-H凝胶较多,体系结构密实性好.

关键词: 水泥;废弃砂浆粉;凝结时间;流动度;强度

Abstract: The influence of waste mortar powder on physical and mechanical properties of cement was studied, by testing water requirement of normal consistency , setting time, fluidity and strength.The results show that cement mixed with waste mortar powder can make the water requirement of normal consistency increase , overall decrease the setting time , the fluidity and fluidity loss of net cement slurry gradually decrease;while the water reducing agent and W/C of cement paste have a great influence on fluidity and fluidity loss .Waste mortar powder affects the strength of cement mortar , the cement strength decreases obviously when increases the amount of waste mortar powder , while the content is less than 10%, the cement mortar is still having high compressive strength and flexural strength . The microstructure characteristics show that waste mortar powder content contains a certain range , ettringite and C-S-H gel of cement slurry system will be better and the structure of the system is compact .

Key words: cement;waste mortar powder;setting time;fluidity;strength

中图分类号:

TU525

丁向群;咸佳蓓;李贺;周向荣. 废弃砂浆粉对水泥物理力学性能的影响[J]. 硅酸盐通报, 2017, 36(9): 3088-3093.

DING Xiang-qun;XIAN Jia-bei;LI He;ZHOU Xiang-rong. Influence of Waste Mortar Powder on Physical and Mechanical Properties of Cement[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2017, 36(9): 3088-3093.

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