C30~C60自密实混凝土的配制及性能研究.pdf

圆O14 年第2 期 混凝土 与水泥制品 圆O14 No.2 2 月 CHINA CONCRETE AND CEMENT PRODUCTS February C30~C60 自密实混凝土的配制及性能研究 1 1 1 1 2 徐仁崇 陈 茜 苏艺凡 刘光锐 徐少杰 1. 厦门市建筑科学研究院集团股份有限公司,361004 ；2. 厦门天润锦龙建材有限公司,361009) 摘 要 采用大掺量矿物掺合料配制C30~C60 自密实混凝土，并对自密实混凝土的工作性能、强度及抗氯离子 渗透性能进行研究。 结果表明，增加胶凝材料用量可以改善混凝土的自密实性能，采用大掺量矿物掺合料替代水泥 保证混凝土粉体总量，是配制中低强度自密实混凝土的方法之一；大掺量矿物掺合料自密实混凝土的抗压强度和抗 氯离子渗透性能随龄期的增长不断提高， 大矿物掺合料自密实混凝土的抗压强度和抗氯离子渗透性能评价应以 56d 龄期为准。 关键词 自密实混凝土；大掺量矿物掺合料；抗压强度；氯离子渗透性能 Abstract: C30 ~C60 self-compacting concrete (SCC) is made by a high volume of mineral admixtures. The workabili- ty, strength and the penetration resistance of chloride ions performance of SCC are investigated. The results show that in- creasing the proportion of binding material can improve the self compacting performance of concrete, and using large amount of mineral admixture as substitution of cement is a way of making mid-low strength SCC. The compressive strength and penetration resistance of chloride ions performance of SCC with a large proportion of mineral admixtures are improved continually with the increase of curing period, and should be evaluated by the age of 56d. Key words: Self -compacting concrete; High volume of mineral admixtures; Compressive strength; Permeability of chloride ion 中图分类号 TU528.53 文献标识码 A 文章编号 1000-4637（2014 ）02-09-04 0 前言 能指标见表1；粉煤灰：漳州后石电厂生产的域级F 自密实混凝土技术是《建筑业 10 项新技术》中 类粉煤灰, 细度 16.8% , 需水量比98% , 烧失量 2 提出的需要积极推广的高性能混凝土技术。 与普通 2