高含泥量砂用氯化胆碱抗泥剂的性能研究  

Research on choline chloride as a clay-anti reagent on the high content clay sand

作　　者：张明 郭春芳 ZHANG Ming;GUO Chunfang(Department of Building Engneering,Zibo Vocational Institute,Zibo 255300,China;Department of Health Management,Shandong Vocational College of Light Industry,Zibo 255300,China)

机构地区：[1]淄博职业学院建筑工程学院,山东淄博255300 [2]山东轻工职业学院健康管理系,山东淄博255300

出　　处：《山东理工大学学报（自然科学版）》2024年第6期9-12,共4页Journal of Shandong University of Technology:Natural Science Edition

基　　金：国家自然科学基金项目(52178211);山东轻工职业学院工程技术类课题(2023GZ01)。

摘　　要：为缓解高含泥量砂对掺聚羧酸系减水剂(PCA)混凝土的不利影响,需要在其中加入抗泥剂,而包含有机季铵盐结构的氯化胆碱(CHC)具有作为抗泥剂的潜力。本文研究了CHC对掺PCA高含泥量水泥净浆和混凝土性能的影响,结果表明,随CHC用量的增加,掺PCA高含泥量水泥净浆初始和1 h流动度增大。当CHC用量为胶凝材料用量的0.10 bwoc%时,掺PCA高含泥量水泥净浆初始和1 h流动度分别达到180 mm和130 mm,具有较好的性价比。与不使用CHC的掺PCA高含泥量砂混凝土相比,应用CHC后混凝土初始流动度和28 d抗压强度分别得到了提高,且混凝土状态良好。To mitigate the adverse effects of high clay content in sand on the quality of concrete with polycarboxylate superplasticizer(PCA),it is often necessary to add anti-clay agents.Choline chloride(CHC),which contains an organic quaternary ammonium salt structure,has the potential to act as an anti-clay agent.The effects of CHC on the properties of high clay content cement paste and concrete with PCA were studied.The experimental results showed that with the increase of CHC dosage,the initial and 1-hour fluidity of high clay content cement paste with PCA increased.When the CHC dosage was 0.10 bwoc%of the binder content,the initial and 1-hour fluidity of high clay content cement paste with PCA reached 180 mm and 130 mm,respectively,showing a good cost-performance ratio.Compared to high clay content sand concrete with PCA,the initial fluidity and 28-day compressive strength of concrete with CHC improved,respectively,and the concrete was in good condition.

关 键 词：聚羧酸系减水剂 抗泥 流动度 

分 类 号：TU528.042.2[建筑科学—建筑技术科学]