骨料含水状态对混凝土配合比设计的影响  

Effect of Aggregate Water Content on Concrete Mix Proportion

作　　者：于丽波[1] 董浩[2] 

机构地区：[1]南京航空航天大学金城学院,南京211156 [2]江苏省交通规划设计院股份有限公司,南京211156

出　　处：《工程建设与设计》2017年第1期156-157,共2页Construction & Design for Engineering

摘　　要：混凝土配合比设计方法并不统一,我国的配合比设计认为骨料是干燥状态,美国的配合比设计认为骨料是饱和面干状态。因此,在实际的计算过程中,骨料含水率和吸水率对于混凝土配合比设计产生了不同的作用,按照骨料的两种含水状态分别进行不同强度等级的混凝土配合比设计,通过强度、抗碳化结果,分析骨料含水状态对混凝土配合比的影响。结果显示,饱和面干状态相当于增加了混凝土单位体积用水量,对保证混凝土强度及耐久性不利。Concrete mixture ratio design method is not unified,the mixture ratio design thought of aggregate is dry state,according to the United States the mixture ratio design of aggregate is saturated surface dry state.Therefore,in the aggregate moisture content and water absorption in the actual calculation for design of concrete produced different role,according to the aggregate state of two kinds of water for different strength grade of concrete mixture ratio design,through strength and carbonation resistance experiments verify the influence of aggregate moisture state for design of concrete.Results show that the saturated surface dry state is equal to the increased water consumption per unit volume of concrete,adverse to ensure concrete strength and durability.

关 键 词：骨料 含水率 吸水率 配合比设计 

分 类 号：TU528.1[建筑科学—建筑技术科学]