SEC 混凝土施工法是一种生产流动性混凝土的新技术。SEC(Sand Enveloped With Ce-ment)混凝土,我国一般译为水泥裹砂混凝土或造壳混凝土。它在节能、节约原材料以及在改善混凝土物理力学性能等方面都表现出显著的经济效益。一、SEC 混凝土的开发及其 SEC 砂浆 SEC concrete construction method is a new technology for the production of liquid concrete. SEC (Sand Enveloped With Ce-ment) concrete, China generally translated as cement-coated concrete or shell concrete. It shows significant economic benefits in terms of energy saving, raw material saving and improvement of the physical and mechanical properties of concrete. First, the development of SEC concrete and its SEC mortar