掺合料对硫铝酸盐水泥基混凝土抗压强度和抗渗性的影响

Influence on the Compressive Strength and the Impermeability of Concrete of Sulphoaluminate Cement with Composite Admixture

主要研究了掺合料[m(矿渣):m(粉煤灰)=2:1]、水灰比对硫铝酸盐水泥基混凝土抗压强度、抗渗性的影响,并与普通硅酸盐水泥基混凝土进行对比。结果表明掺合料使硫铝酸盐水泥基混凝土早期和后期强度都明显降低,抗渗性降低,且掺量越高,其抗压强度、抗渗性降低越明显;另外,硫铝酸盐水泥基、普通硅酸盐水泥基混凝土的抗压强度、抗渗性都随着水灰比的减小,其抗压强度、抗渗性明显提高。

The influence of compressive strength and the impermeability of concrete of sulphoaluminate cement mixed diverse dosage with composite admixture （slag： fly ash =2：1 ） arid the ratio of water to cement was studied. And compared with the influence of compressive strength and the impermeability of concrete of OPC. Results showed that early and later compressive strength of concrete would decrease, the impermeability would reduce weakly when mineral admixtures were added to concrete cement. The compressive strength and the impermeability of conctrete would reduce of sulphoaluminate when the dosage of mineral admixtures increased. In addition, the compressive strength and the impermeability of concrete of sulphoaluminate cement and OPC would be increased greatly when the ratio of water to cement was decreased.