不同养护制度下分散剂对干混砂浆颜色的影响

Influence research on mortar color of dispersant during different curing system

彩色干混砂浆由于生产和运输方便、颜色丰富、质感强等特点广泛应用于装饰装修工程中,如彩色装饰砂浆、彩色自流平砂浆、瓷砖勾缝剂等。彩色干混砂浆通常以无机粉状颜料作为着色剂,其表面颜色受到配比、加水量、分散均匀程度甚至搅拌时间等因素的影响。另外实际施工中砂浆中胶凝材料的水化进程受环境温湿度的变化、基材种类影响,导致硬化后砂浆可出现表面颜色不均匀、发花等现象,严重影响彩色干混砂浆的使用效果,其中产品原料特别是分散剂、环境因素对砂浆颜色影响较为明显。探讨了不同养护制度下,不同类型和掺量的分散剂对彩色干混砂浆硬化后表面颜色的影响。

Color dry mortars, e.g. color decoration mortar, color self leveling mortar, tile pointing agent etc.,have been appliedwidely because of its multi functional properties,such as convenient production and transportation,abundant color and good decora-tion. Inorganic pigment powders were used as colorant in color dry mortar usually. The mortar surface color was affected by compo-sition, the ratio of water and the degree of dispersed, even the stirring time. Besides, in practical construction,the temperature andhumidity of environment and the kind of substrate in the hydration process of the cementing material in mortar can affect the col-or of mortar surface, seriously affect the use effect of color dry-mixed mortar, wherein the effect of dispersant and other productraw materials,environmental factors on mortar color is more obvious. This paper mainly discusses influence of different type anddosage of dispersants on the color of dry-mixed mortar surface under different curing system.