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1 范围11 本标准规定了采用γ射线现场测定塑性和硬化波特兰水泥混凝土密度的方法。12 本标准包括二种测试方法：方法A 直接透射法第7章方法B 散射法第8章13 本标准采用国际单位制（SI）表示量值。2 参考文件21 AASHTO标准T19 确定集料的密度的试验方法T121 确定混凝土
1 Scope 1 1 This standard specifies the method of on-site determination of plasticity and hardened Portland cement density using γ-ray. 1 2 This standard includes two kinds of test methods: Method A direct transmission method Chapter 7 Method B scattering method Chapter 8 1 3 This standard uses the International System of Units (SI) that value. 2 references 2 1 AASHTO standard T19 test method to determine the density of aggregates T121 to determine the concrete