制作钢筋混凝土空心板,大都是用石灰、滑石粉、废机油等作为底模脱模的涂料。通常制作一块宽50厘米、长360厘米的空心板需花材料费0.05～0.08元左右。去年我们用浓度80%的黄泥浆作为涂料,经试验,脱模的效果良好。采用黄泥浆作涂料的操作方法很简单:先把配好的黄泥浆涂抹在地坪 In the production of reinforced concrete hollow slabs, most of the paints are demolded with lime, talcum powder, and waste oil as the bottom mold. It is usually necessary to make a hollow plate with a width of 50 cm and a length of 360 cm to spend about 0.05-0.08 yuan. Last year we used 80% concentration of yellow mud as a coating. After testing, the effect of stripping was good. The operation method using yellow mud for paint is very simple: first apply the yellow mud to the floor