合脂砂虽有高的干强度,但湿强度低(一般只有0.1公斤力/厘米~2左右),泥芯容易变形。为防止变形常加入糊精来提高其湿强度,但不经济。我们试用面粉厂的废面粉代替糊精混制高湿强度合脂砂,获得了满意的结果。一、废面制熟;废面粉35%,水66%,混合均匀,然后边加热边搅拌,制熟后呈团块状。废面应尽量少含杂质,并加热熟透,否则影响使用效果。 Although the high-strength composite mortar dry strength, but low wet strength (usually only 0.1 kg force / cm ~ 2 or so), mud core deformation easily. In order to prevent deformation often add dextrin to improve its wet strength, but not economical. We tried the flour mill waste flour instead of dextrin mixing high-wet strength grease sand, and obtained satisfactory results. First, the waste noodles cooked; waste flour 35%, 66% water, mixed, then stirring while heating, cooked after the clumps. Waste noodles should be as little as possible impurities, and heat cooked, or affect the use of results.