申请人:W.R. GRACE & CO.-CONN.
公开号:EP1887053A1
公开(公告)日:2008-02-13
An exemplary method for set retarding the surface of a mortar or concrete material, comprising applying to the surface of a mortar or concrete, or to the inner surface of a mold for forming the mortar or concrete, a non-petroleum based hot melt coating composition which is heated to assume a flowable or sprayable form, and allowing the hot melt coating composition to cool to ambient temperature whereby the composition forms a solidified membrane, and thereafter removing the membrane using pressurized water. Preferably, the hot melt coating composition contains at least one agent operative to retard the setting of the mortar or concrete, and optional finely divided particulate materials, light-reflective pigments, or mixtures thereof.
一种用于砂浆或混凝土材料表面凝固延缓的示例性方法,包括将非石油基热熔涂料组合物涂抹在砂浆或混凝土表面,或涂抹在用于形成砂浆或混凝土的模具内表面,该组合物经加热后呈可流动或可喷涂形式,并使热熔涂料组合物冷却至环境温度,从而使该组合物形成一层固化膜,然后使用加压水去除该膜。热熔涂料组合物最好含有至少一种可延缓灰泥或混凝土凝固的药剂,以及可选的细小颗粒材料、光反射颜料或其混合物。