EN771-3:2003 Specification for masonry units-Part 3: Aggregate concrete masonry units（dense and light weight aggregates）
EN771-3 砌块规范，集料混凝土砌块(密实和轻质集料)
EN771-3 Scope
The European Standard specifies the characteristics and performance requirements of aggregate concrete masonry units made from dense and lightweight aggregates or combination of both for which the main intended uses are common, facing or exposed masonry in load bearing or load bearing building and civil engineering applications. The units are suitable for all forms of walling, including single leaf, external leaf to chimneys, cavity wall, partitions, retaining, and basement. They can provide fire protection, thermal insulation, sound insulation and sound absorption.
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