The most notable feature is its low weight,significantly reducing structural dead load and foundation demands.The porous internal structure of lightweight aggregates provides excellent thermal insulation and some sound absorption.Offers good fire resistance,with low susceptibility to spalling under high heat.Exhibits better seismic performance due to a lower modulus of elasticity,allowing greater energy absorption.
Classified by dry density into grades like 800,1000,1200 up to 1800 kg/m³.Strength correlates with density;higher density generally means higher strength,denoted by"LC"(e.g.,LC15=characteristic strength 15MPa).Thermal performance(thermal conductivity)is a key specification;lower density offers better insulation.
Widely used for building insulation layers:roof insulation/screeds,floor thermal/acoustic layers.For manufacturing non-load-bearing lightweight partition blocks.In bridge engineering,used to reduce the weight of deck toppings.Used as structural infill walls in high-rise buildings.Also for producing lightweight precast elements like insulated cladding panels,flues,etc.
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