Material：C30 concrete（Stone, sand, cement, etc.）
Product Category：Prestressed laminated slab and reinforced concrete laminatedslab
National standards：《06SG439-1 Prestressed concrete composite slab》、 《15G366-1 reinforced concrete composite slab(60mm thickness bottom slab) 》
Use：Composite slab is a better structural form which combines precast and cast-in-place concrete. The prefabricated prestressed slab (5-8 cm thickness) and the upper cast-in-situ concrete layer are combined to form a whole and work together. The main prestressing steel of composite slabs are the main steel of composite slabs, and the cast-in-situ concrete floors are only equipped with bending steel and structural steel. The cast-in-situ concrete layer adopts prestressed composite slabs , so need not formwork supporting. The bottom of the slabs is smooth, and the roof no longer be plastered after the finishing cracks. The composite floor has the advantages of high stiffness, good crack resistance, lower steel consumption, saving formwork and integrality performance. Because there is no need for formwork support, and could hoiste large prefabricated concrete slabs at the same time during the structure construction stage, so that the decoration project can be inserted in advance and short the construction period of the whole project.
The floor span is less than 8 meters. It can be widely used in hotels, office buildings, schools, residential buildings, hospitals, warehouses, parking lots, multi-storey industrial buildings and other housing construction projects.
Compared with non-prestressed composite slabs, non-prestressed composite slabs can save steels and reduce costs under the same load intensity, and can effectively increase the span of composite slabs under the same amount of steel.