摘要
材料组成对水泥稳定碎石抗弯拉强度有重大影响。应用灰色理论对水泥稳定碎石抗弯拉强度试验研究结果进行分析并建立强度预测模型。根据水稳碎石抗弯拉强度材料组成因素的灰色关联分析结果,选取影响最为显著的水泥剂量、水泥胶砂28d强度,集料级配分形维数、集料级配分形相关系数、含水量和集料压碎值作为预测模型参数,建立了90d抗弯拉强度预测模型并给出6参数模型简化式,适用性验证表明模型预测值与试验实测值满足误差要求,说明该模型具有良好的可靠性,可用于在材料组成设计中根据材料组成预估水泥稳定碎石90d抗弯拉强度。
Material compositions of cement stabilize aggregate has a great influence on bending strength. Based on the test dates, the paper analyses the influence by grey system theory and obtains prediction model of bending strength. Ac cording to the grey correlation analysis of material compositions to bending strength, the paper chooses cement content, 28 d cement strength, fractal dimension of gradation composition, related coefficient of gradation composition, water con tent and aggregate crushing value as the parameters of prediction model. Then the 90 d bending strength prediction model and 6 parameters reduced-form model can be gotten. The applicability of the model indicates the error between predicted values and measured values is allowable. So the prediction model has good reliability and can be used to predict the 90 d bending strength of cement stabilize aggregate in materials composition designing.
出处
《武汉理工大学学报》
CAS
CSCD
北大核心
2012年第11期41-47,共7页
Journal of Wuhan University of Technology
基金
交通部科技项目(2011 318 812 1270)
关键词
水泥稳定碎石
抗弯拉强度
材料组成
灰色理论
强度预估模型
cement stabilized aggregate
bending strength
component of materials
grey correlation analysis
strength prediction model
