UHPC预混料强度检测若干因素影响研究  

Research on Several Factors Influencing the Strength Testing of UHPC Premix

作　　者：黄伟健 戴良 Huang Weijian;Dai Liang(Jiangxi Building Materials Product Quality Supervision and Inspection Station Co.Ltd.,Nanchang,Jiangxi 330001)

机构地区：[1]江西省建材产品质量监督检验站有限公司,江西南昌330001

出　　处：《江西建材》2024年第6期23-25,共3页

基　　金：江西省重点研发计划项目“基于UHPC连接的新型装配式建筑结构关键技术研究”(项目编号:20212BBG71010)。

摘　　要：目前,预混料是超高性能混凝土产品(UHPC)的主流供货来源,然而预混料强度检测受多方面因素影响,强度发生波动容易造成纠纷。文中以120MPa级别UHPC预混料为研究对象,系统研究了水料比、减水剂掺量、养护方式以及存放时间等因素对UHPC预混料强度的影响,指出只有采用合理准确的成型、测试方法,才能真实反映预混料的强度。同时,随着存储时间的延长,UHPC预混料性能会发生一定衰减,生产厂家应加强这一方面的质量控制。At present,premix is the mainstream supply method for ultra-high performance concrete(UHPC)products.However,the strength testing of premix is affected by various factors,and strength fluctuates,which can easily lead to disputes.This article takes 120 MPa grade UHPC premix as the research object,and systematically studies the influence of several factors such as water to material ratio,water reducer dosage,curing method,and storage time on the strength of UHPC premix.It points out that only by adopting reasonable and accurate casting and testing methods can the strength of the premix be truly reflected.At the same time,as the storage time of UHPC premix increases,its per-formance will experience certain degradation,and manufacturers should strengthen quality control in this regard.

关 键 词：预混料 检测 强度 衰减 质量控制 

分 类 号：TU528[建筑科学—建筑技术科学]