橡胶粉对嵌锁密实水泥混凝土强度特性的影响分析  

Influence Analysis of Rubber Powder on Strength of Interlockingdense Cement Concrete

作　　者：李宁[1] 马骉[1] 司伟[1] 田宇翔[1] 

机构地区：[1]长安大学公路学院、特殊地区公路工程教育部重点实验室,西安710064

出　　处：《材料导报》2014年第22期114-118,共5页Materials Reports

基　　金：“十二五”国家科技支撑计划(2014BAG05B04)

摘　　要：以嵌锁密实水泥混凝土为基础,掺加废旧橡胶粉,使其不仅具有橡胶粉混凝土的优点,同时能够解决橡胶粉水泥混凝土强度不足问题,并通过橡胶粉表面处理使嵌锁密实水泥混凝土与橡胶粉水泥混凝土能够有效结合。采用橡胶粉等体积置换部分砂(10%、20%、30%),分析橡胶粉掺量以及橡胶粉种类(表面改性和未改性)对水泥混凝土的抗压强度和抗弯拉强度的作用。分别应用线性模型、对数抛物线性模型、对数S-logistic模型分析混凝土强度在不同橡胶粉掺量下的变化。试验结果表明:橡胶粉掺量和种类对混凝土的强度有显著的影响,总体是随着橡胶粉掺量的增加强度降低;线性模型能够较好地反映强度随着未改性橡胶粉掺量的变化趋势;对数S-logistic非线性模型可以更加准确地模拟改性橡胶粉掺量对强度变化的影响。Based on the interlock-dense cement concrete, adding waste rubber powder, the concrete not only has the advantages of rubber powder concrete, at the same time to solve the strength shortage of rubber powder. The interlocking-dense cement concrete can combine with rubber powder concrete effectively with the modified rubber. The part sand （10% , 20%, 30%） was replaced with rubber powder in equal volume method, analyzing the influence of rubber powder content and types （modified and unmodified） on the compressive strength and flexural strength of interlocking-dense cement concrete. The linear model, logarithmic parabolic linear model, and logarithmic S-logistic model were applied to analysis the concrete strength under different rubber powder content. The results show that the rubber powder content and types have significant effect on the strength, and the concrete strength is reducing with the increasing content of rubber powder; the strength change tendency of unmodified rubber powder content can be better reflect with linear model; Logarithmic S-logistic nonlinear model can simulate the impact to modified rubber powder concrete strength on the variation of rubber powder content more accurately.

关 键 词：道路工程 嵌锁密实 橡胶粉 水泥混凝土 强度 统计分析 

分 类 号：TB321[一般工业技术—材料科学与工程] U416[交通运输工程—道路与铁道工程]