常用掺合料Ⅱ级粉煤灰和S95磨细矿渣粉的影响系数研究  

Influence Coeff icients of Common Admixture of Ⅱ Grade Fly Ash and S95 Ground Granulated Blast Furnace Slag Powder

作　　者：郝会娟[1] 孟志良[2] 孟晨璇 姚志玉 王云[4] HAO Huijuan;MENG Zhiliang;MENG Chenxuan;YAO Zhiyu;WANG Yun(Henan Technical College of Construction,Zhengzhou Henan 450064,China;College of Urban and Rural Construction,Agricultural University of Hebei,Baoding Hebei 071001,China;Hebei Construction Group Co.Ltd.,Baoding Hebei 071051,China;Hebei College of Science and Technology,Baoding Hebei 071000,China)

机构地区：[1]河南建筑职业技术学院,河南郑州450064 [2]河北农业大学城乡建设学院,河北保定071001 [3]河北建设集团有限公司,河北保定071051 [4]河北科技学院,河北保定071000

出　　处：《铁道建筑》2018年第12期156-160,共5页Railway Engineering

基　　金：河北农业大学理工基金(ZD201404)

摘　　要：采用水泥胶砂强度检验方法,测定了Ⅱ级粉煤灰和S95磨细矿渣粉单掺和复掺时不同掺量的影响系数(称实测影响系数),同时利用现行JGJ 55—2011《普通混凝土配合比设计规程》确定了对应的影响系数(称规程影响系数)。分析了2种影响系数的相关关系及两者随掺合料掺量的变化规律。结果表明:单掺Ⅱ级粉煤灰和复掺Ⅱ级粉煤灰与S95磨细矿渣粉时实测影响系数与规程影响系数显著线性相关,单掺S95磨细矿渣粉时实测影响系数与规程影响系数不存在线性相关关系;单掺时随着掺合料掺量的增加影响系数减小,复掺且掺量一定时随着粉煤灰掺量的增加影响系数亦减小;考虑到实测影响系数的误差和规程影响系数的偏差,采用规程影响系数不会影响到混凝土配合比设计的准确性。By adopting strength test method of cement mortar,the measured inf luence coeff icients of different contents with gradeⅡf ly ash and S95 ground granulated blast furnace slag powder were measured when they were mixed singly or together.At the same time,the code inf luencing coeff icients were determined by using the current J G J 55-2011 which is Specif ication for Mix Proportion Design of Ordinary Concrete,and the relationship between the two inf luence coeff icients and the change rules of these two mixture with the admixture content were analyzed.The results show that there is a signif icant linear correlation between the measured inf luencing coeff icient and the code inf luencing coeff icient when mixed withⅡGrade f ly ash singly and mixed withⅡGrade f ly ash and S95 ground granulated blast furnace slag powder together,there is no linear correlation between measured inf luence coeff icient and code inf luence coeff icient when mixed with S95 ground granulated blast furnace slag powder singly.The inf luence coeff icient decreases with the content of admixture increasing when mixed singly,the inf luence coeff icient also decreases with the increase of f ly ash content when mixed at certain content.The design accuracy of concrete proportional rate will not be affected by using code inf luence coeff icient through considering the error of the measured inf luence coeff icient and the deviation of the code inf luence coeff icient.

关 键 词：工程材料 影响系数 试验研究 Ⅱ级粉煤灰 S95磨细矿渣粉 

分 类 号：TU528.041[建筑科学—建筑技术科学]