不同水尾土取代比例对水泥砂浆强度的影响

Infl uence of Different Water Tail Soil Replacing Ratio's on the Strength of Cement Mortar

本研究以垃圾焚化炉融渣细粒料作为主要试验材料,筛选出融渣细粒料中粒径<75μm的粉料(俗称水尾土),然后添加不同比例的水尾土取代水泥含量制作砂浆,并且使用不同水灰比研究水泥浆体流度值及抗压强度的变化。实验结果表明,使用相同水灰比时添加水尾土于水泥中取代其含量后其水泥浆体流动性变高,并且随着水尾土取代水泥含量比例增加,其水泥浆体流度值上升。但使用水尾土取代水泥含量后不能有效地使水泥浆体包裹粒料进而提升抗压强度。

This study took the refuse incinerator melting slag fine aggregate as the main test material, screened out powder particle size was less than 75 microns in melting slag fine aggregate （commonly known as water tail soil）. Then production of cement mortar by adding different proportions of water tail soil replaced cement, and research on the variation of cement paste fluidity and compressive strength under different water cement ratio. The results showed that, with the same water-cement ratio, cement paste fluidity got higher as percentage of ＂water tail soil＂ in paste increased. However, the replacing cement by the ＂water tail soil＂ could not effectively make the cement wrapping the aggregate in mortar specimens thus neither increased the compressive strength.