一、挤压机用的混凝土挤压机使用的是螺旋输送挤压技术,依靠挤压振捣成型,并借助混凝土的反作用力,推动滑模行走。用挤压机生产的圆孔楼板,密实度大,强度安全系数及抗裂度安全系数,都比其它成型工艺的板块大。挤压成型工艺使用坍落度为零的干硬性混凝土,通常有下列一些要 1. The concrete extruder used in the extruder is a spiral conveying extrusion technology. It relies on extruding and vibrating to form, and uses the reaction force of concrete to push the sliding mold to walk. The round-hole floor slabs produced by the extruder have a large density, a safety factor of safety, and a safety factor against cracking, which are larger than those of other forming processes. The extrusion molding process uses dry hard concrete with a slump of zero, usually with the following