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增稠消泡方案对清水混凝土 性能的影响研究
作者：李炜1，2，陆加越1，2，刘红1，2，赵少鹏1，2
（1.江苏苏博特新材料股份有限公司，江苏 南京 211103；2.高性能土木工程材料国家重点实验室，江苏 南京 210008）
摘要：针对清水混凝土对工作性能及外观气孔分布较高的技术要求，按拌合掺量设计增稠剂与消泡剂复合应用方案，通过调整2种组分的掺入比例，研究了增稠消泡方案对清水混凝土硬化前后工作性能及内外部气泡结构的影响规律。结果表明：适宜掺量的增稠剂和消泡剂复合使用对改善清水混凝土流动性及塑性黏度有利，且在不同的消泡剂用量下存在最佳的增稠剂掺量，使得清水混凝土具有较好内部气泡结构和外观气孔分布。
关键词：增稠剂；消泡剂；清水混凝土；气泡结构；外观气孔
中图分类号：TU528.38 文献标识码：A 文章编号：1001-702X（2019）07-0016-04
Influence of thickening and defoaming scheme on properties of fair-faced concrete
LI Wei1，2，LU Jiayue1，2，LIU Hong1，2，ZHAO Shaopeng1，2
（1.Jiangsu Subote New Materials Limited Company，Nanjing 211103，China；
2.State Key Laboratory of High Performance Civil Engineering Materials，Nanjing 210008，China）
Abstract：Aiming at the technical requirements of fair-faced concrete for high performance and appearance of pore distribution，the application scheme of thickener and defoamer was designed according to the blending amount. The thickening and defoaming was studied by adjusting the blending ratio of the two components. The influence law of the scheme on the working performance and internal and external bubble structure of the fair-faced concrete before and after hardening was studied. The results show that the combination of suitable thickener and defoamer is beneficial to improve the fluidity and plastic viscosity of fair-faced concrete，and there is the best thickener dosage point under different defoamer dosages，so that the fair-faced concrete has a good internal bubble structure and appearance of pore distribution.
Key words：thickener，defoamer，fair-faced concrete，bubble structure，appearance stomata