利用电炉钢渣作为砌筑水泥原料的试验研究

文章对利用电炉钢渣生产砌筑水泥进行了初步的研究。采用抗压、抗折强度试验、标准稠度用水量、凝结时间试验、水化放热测定、XRD和SEM分析等试验方法，研究了几种缓凝剂对还原渣的缓凝效果，分析了各组分掺入量对砌筑水泥的凝结时间和强度的影响，确定了砌筑水泥的组成。试验结果表明，氧化钢渣本身活性较低，可作为非活性混合材使用；还原渣的水化活性较高，可作为活性混合材使用。经合理设计砌筑水泥各组分的比例，所获得的砌筑水泥可达到GB／T3183-1997所规定的各项技术指标要求。

Study on manufacturing of masonry cement with slag from the steel-smelting furnace

The manufacturing of masonry cement with slag from the steel-smelting furnace was studied. The effect of several retarding agents and content of the composition of masonry cement on the properties of the strength and setting time have been discussed with the results of the experiments, such as XRD, SEM, hydrated heat, flexural strength, compressive strength, setting time, water demand for normal consistency of the resultant cement. The composition of the masonry cement was made up. The results reveal that the steel-slag oxide of electronic furnace has lower reactivity as non-active addition and the reducing steel-slag of electronic has higher reactivity as active addition . With optimize of the composition, the performances of masonry cement can conform to the requirements of national standard.