目前国内预应力圆孔板生产台座大都采用100~#～200～#素混凝土捣制,然后用水泥砂浆粉面而成。经过长期使用,由于热胀冷缩的作用,以及油质隔离剂的侵浊,台座局部就会出现开裂、起鼓、揭层、破损等现象,使生产出的构件底部形成一道道的“梗子”、“疤子”,严重地影响构件质量,给土建施工也带来很大困难。如果避开这些部位,就要影响台面的利用率,并浪费部分钢材。为了解决这一矛盾,我厂曾采用高标号 At present, most of domestic production of pre-stressed circular plate pedestal using 100 ~ # ~ 200 ~ # plain concrete tanning, and then made of cement mortar noodles. After long-term use, due to the effects of thermal expansion and contraction and the infiltration of oily separating agents, cracks, kicks, delaminations, and breakages may occur on the pedestal, creating a “stem” at the bottom of the component. “,” “Scorpion”, a serious impact on the quality of components, and also brought great difficulties to the civil construction. If you avoid these parts, you must affect the utilization of the table, and waste some of the steel. In order to solve this contradiction, our factory used high numbers