废石粉-锰渣微粉制备自流平砂浆的试验研究

Experimental study on self-leveling mortar prepared by waste stone powder and manganese slag

将废石粉和锰渣用于制备自流平砂浆,研究了两者掺量对自流平砂浆的性能影响。试验表明:废石粉替代河砂在20%以下时,砂浆流动度及力学性能均有所提高。锰渣替代水泥比例在20%以下时,砂浆流动度有所提升,但是经时损失较大,随着锰渣掺量增加砂浆强度下降,但是28 d强度下降不如24 h强度明显,通过掺入废石粉可改善锰渣带来的不利影响。

Waste stone powder and manganese slag were used to prepare self- leveling mortar, the effect of dosage on the property was studied.The result show that waste stone powder can enhance the fluidity and strength of mortar when the dosage is less than 20% .man- ganese slag can enhance the initial fluidity of mortar when the dosage is less than 20%,but the fluidity loss is big.The strength will fall with the dosage of manganese slag increasing, comparing to 24 h strength, fall range of 28 d strength is smaller, by mixing waste stone powder, the problem can be avoided.