Research and Application of Precast Ceramsite Concrete Components
In this paper,LC30 structural ceramsite concrete is used to replace ordinary concrete in the production of precast stairs,floor slabs,and composite beams,achieving lightweighting of precast components. The results indicate that when designing the mix ratio of ceramsite concrete with a ceramsite volume ranging from 45％ to 60％,as the amount of ceramsite increases,the apparent density of LC30 ceramsite concrete shows a decreasing trend. When the ceramsite volume is 55％,LC30 ceramsite concrete exhibits the highest compressive strength,the lowest apparent density,and good thermal and durability performance. Precast stairs,floor slabs,and composite beams made from this ceramsite concrete have been verified to meet the design and acceptance requirements for precast ceramsite concrete components in terms of material properties,deflection,bearing capacity,crack width,and other structural performance indicators. Compared to ordinary concrete components,these precast ceramsite concrete components achieve a weight reduction rate of over 20％,realizing lightweighting of precast components. Due to its excellent properties,ceramsite concrete can be applied in various fields such as highway bridges,cast-in-place high-rise buildings,precast building components,and building insulation materials.
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