120MPa超高强水泥基材料的研究  

Investigation on 120MPa Ultra-High-Strength Cement-Based Composites

作　　者：张德思[1] 颜学武[1] 彭晨峰 

机构地区：[1]西北工业大学建筑材料科学研究所,陕西西安710072 [2]茂名市城市规划设计研究院,广东茂名525000

出　　处：《西北工业大学学报》2003年第2期187-190,共4页Journal of Northwestern Polytechnical University

基　　金：国家自然科学基金 (5 98790 2 4 )

摘　　要：采用常规原材料 ,普通成型工艺 ,通过正交设计试验研究 ,配制出了抗压强度为 1 2 0 MPa的超高强水泥基材料 ,并给出了优选配比。超高强水泥基材料的抗压强度和抗折强度试验的极差方差分析结果表明 :水胶比为影响超高强水泥基材料强度的最显著因素 。In this paper the ultra high strength cement based composites were investigated using ordinary materials with normal mixing method. The orthogonal test design was employed to yield an ultra high strength cement based material whose compressive strength exceeded 120 MPa by using Ordinary Portland Cement (OPC), superfine aggregate silica fume, superplasticizers and natural sand. The results of this investigation show that the water/binder ratio used is the most significant factor to control the strength of the material. More than 100 MPa compressive strength can be achieved with the water/binder ratio of 0.24 for the cement based composites. Finally, the recommended optimized mix proportions are: water/binder ratio of 0.24, silica fume / cement ratio of 0.11 and sand/cement ratio of 1.2. The optimized dosages of superplasticizers A and B are 0.6% and 2% respectively of the mass of cement and silica fume.

关 键 词：超高强 水泥基材料 硅灰 强度 

分 类 号：TU528.45[建筑科学—建筑技术科学]