废弃砂浆粉对水泥物理力学性能的影响

发布时间：2018-04-11 07:31

  本文选题：水泥 + 废弃砂浆粉　； 参考：《硅酸盐通报》2017年09期

【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。
[Abstract]:The effects of waste mortar powder on the physical and mechanical properties of cement were studied. The standard consistency water requirement, setting time, fluidity and strength were measured.The results show that the addition of waste mortar powder leads to the increase of standard consistency water requirement of cement, the decrease of setting time of cement, and the decrease of fluidity and fluidity loss of cement paste.The ratio of water reducing agent to water cement has great influence on the fluidity and fluidity loss of cement paste.The strength of cement mortar will be affected directly by the amount of waste mortar powder. The greater the amount of waste mortar is, the more serious the strength loss of cement mortar is. However, when the content is less than 10, the cement mortar still has high compressive strength and flexural strength.The microstructure of the cement mortar shows that ettringite and C-S-H gels are produced in the cement mortar system when the amount of waste mortar powder is in a certain range and the structure of the cement mortar system has good compactness.
【作者单位】： 沈阳建筑大学材料科学与工程学院;
【基金】：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)
【分类号】：TQ172.1

【相似文献】

中国期刊全文数据库 前5条

1 要秉文,宋少民,高振国;砌抹砂浆粉的试制与应用[J];石家庄铁道学院学报;1999年04期

2 吕建福;巴恒静;谭忆秋;;海洋黏细菌对砂浆渗透性和微观结构影响[J];建筑材料学报;2013年04期

3 闫玉蓉;方永浩;龚泳帆;承礼清;;碱激发再生水泥砂浆粉胶凝材料的强度与显微结构[J];材料导报;2013年24期

4 要秉文,罗永会,于跃勋;MC砂浆粉的开发[J];粉煤灰综合利用;2000年02期

5 钱宝军;杨莹;;高含碳粉煤灰球磨后在混凝土和砂浆中的应用研究[J];商品混凝土;2014年01期

中国重要会议论文全文数据库 前1条

1 邱建华;蒋俊辉;刘小泉;;聚氨酯保温板系统中水泥玻纤界面黏结砂浆的性能研究[A];第五届全国商品砂浆学术交流会论文集（5th NCCM）[C];2013年

，

本文编号：1735019