水泥添加量对电解锰渣免烧砖性能的影响

控制骨料掺入量为20％,成型压力为2 MPa,混料含水率为25％的条件下,系统研究了水泥添加量对电解锰渣免烧砖性能的影响.结果表明:当水泥添加量为20％时,电解锰渣免烧砖7 d抗压、抗折强度分别为10.21 MPa和2.35 MPa,28 d抗压、抗折强度分别为13.76 MPa和2.74 MPa,体积密度为1.36 g/cm3,线收缩率为1.13％,吸水率为33.32％,饱和系数为1.47,有轻微泛霜现象产生,强度达到国家烧结普通砖的标准要求,其他性能满足国标一级品的要求.

Effect of Cement Addition on the Properties of Unburned Brick of Electrolytic Manganese Slag

When the aggregate amount was 20％, the molding pressure was 2 MPa, mixing water content was 25％, the effect cement addition on the properties of unburned brick of electrolytic manganese slag were been studied systematically .The results show that when the concent of cement is 20％, the compressive strength and flexural strength of electrolytic manganese brick are 10.21 MPa and 2.35 MPa after 7 d, and the compressive strength and flexural strength are 13.76 MPa and 2.74 MPa after 28 d, the volume density is 1.36 g/cm3 , the linear shrinkage rate is 1.13％, the water absorption rate 33. 32％, the saturation coefficient is 1 .47 , and there was little frost phenomenon .The strength could meet the national standard requirements of ordinary sintering bricks , other properties can meet the requirements of the national first-class products .