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水泥稳定再生碎石基层增强型抗泥剂的研制
作者：温广香1，2，欧阳添资1，2，周艺1，2，张继森1，2，万署1，2，吴超凡1，2
（1.湖南省建筑固废资源化利用工程技术研究中心，湖南 长沙 410007；2.湖南云中再生科技股份有限公司，湖南 长沙 410007）
摘要：以泥土分散组分、泥土吸附组分、离子络合物组分和缓凝组分复配而成的聚羧酸系减水剂（PC-1B）用抗泥剂（KN-1），其最佳配比为：m（SHMP）∶m（PEG）∶m（β-CD）∶m（SG）=4∶0.6∶13.5∶8。将PC-1B与KN-1应用于水泥稳定再生碎石基层（再生水稳），能抑制再生砖渣泥土对PC-1B的影响，提高对水泥的分散性及再生水稳的抗压强度。水泥稳定再生砖渣水稳强度试验，掺0.20%PC-1B组和0.20%PC-1B+KN-1组（质量比20∶19）的7 d无侧限抗压强度分别为4.1、5.5 MPa，与空白组（3.8 MPa）相比分别提高了7.9%和42.1%。
关键词：聚羧酸减水剂；抗泥剂；净浆流动度；7 d无侧限抗压强度；水泥稳定再生集料基层
中图分类号：TU528.042+.2 文献标识码：A 文章编号：1001-702X（2019）10-0079-05
Development of enhancement mode anti-clay agent for cement-stabilized recycled aggregate base
WEN Guangxiang1，2，OUYANG Tianzhi1，2，ZHOU Yi1，2，ZHANG Jishen1，2，WAN Shu1，2，WU Chaofan1，2
（1.Hunan Province Research and Construction Center for Building Solid Waste Utilization Technology，Changsha 410007，China；
2.Hunan Yunzhong Regeneration Technology Co. Ltd.，Changsha 410007，China）
Abstract：The anti-clay agent（KN-1） for polycarboxylate superplasticizer（PC-1B） is developed by compounding of soil
dispersing component，soil adsorbing component，ionic complex component and retarding component，the best mass ratio of each component being m（SHMP）∶m（PEG）∶m（β-CD）∶m（SG）=4∶0.6∶3.5∶8. The application of PC-1B and KN-1 to the cement-stabilized recycled aggregate base can inhibit the effect to recycled brick slag on PC-1B to increase the dispersion of cement and enhance the compressive strength of the cement-stabilized recycled aggregate base. The strength test of cement-stabilized recycled aggregate base showed that the 7 d unconfined compressive strength of 0.20% PC-1B group and PC-1B & KN-1 group were 4.1 MPa and 5.5 MPa respectively，increased by 7.9% and 42.1% respectively compared to base specimen of blank group（3.8 MPa）.
Key words：polycarboxylate superplasticizer，anti-clay agent，fluidity of slurry，7 d unconfined compressive strength，cement-stabilized recycled aggregate base