论文部分内容阅读
以水泥、矿粉、粉煤灰、石灰、石膏为主要粉料,适当加入减水剂和纤维,用物理发泡法,制备高强度高储水混凝土。研究了在1000、1200、1300、1400 kg/m~3密度等级下,高强度高储水混凝土的浆体流动度、表观密度、强度、收缩率、吸水率、抗冻性之间的关系。结果表明,高强度高储水混凝土的抗压强度为14.2~33.0 MPa,48 h吸水率为16.2%~27.1%,抗冻性良好,可望成为一种海绵城市人行道用的材料。
With cement, ore powder, fly ash, lime, gypsum as the main powder, water reducer and fiber are added as appropriate, and physical foaming is used to prepare high-strength high-water-storage concrete. The relationship between fluidity, apparent density, strength, shrinkage, water absorption and frost resistance of high strength and high storage concrete at 1000, 1200, 1300 and 1400 kg / m ~ 3 density was studied . The results show that the compressive strength of high strength and high storage concrete is 14.2 ~ 33.0 MPa, the water absorption rate of 48 h is 16.2% ~ 27.1%, and the frost resistance is good. It is expected to be a sponge city sidewalk material.