干粉砂浆混合规律及影响因素

Study on Mixing Law and Influence Factors of Dry-mixed Mortar

采用甲基紫法表征干粉砂浆混合度,研究滚筒式混合机混合效果,分析了混合时间、转速、砂子细度模数、装载系数等对干粉砂浆混合效果的影响.研究发现混合度随混合时间呈周期性变化,而转速、砂子细度模数及装载系数对混合度的影响曲线上存在一个极值点,该点表示配合料达到最佳混合效果.

The materials of dry-mixed mortar,has been largely used as the development of energy saving building and environmental protection.So understanding the mixed characteristic and disciplines of this materials,which can instruct production and practice,becomes more and more important.This article indicates the mixing degree of dry-mixed mortar by pyoktanin blue method,researches the mixing effect by drum-type blending machine.And also together with the basic discipline curves,the article analyzes the mixing effect by mixing time,rotation speed,sand of modulus fineness,loading factors,etc.The research shows the degree of mixing changes periodically as mixing time changes.But all of rotation speed.,sand modulus fineness and loading factors have extreme points on the curves,the points mean the best mixing effect for the material.