混凝土类型 1 依单位重分成三大类： 常重混凝土（Normal-weight concrete ） 含天然砂和卵石或碎石的混凝土，单位重 … 沥青混凝土单位重,沥青混凝土单位重换算沥青混凝土单位重换算…
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The fire performance of lightweight concrete is superior to that of normal-weight concrete.
轻质混凝土的耐火性能比一般的混凝土的好。
And reinforced high-strength lightweight concrete beam is less ductile as compared with the normal-weight concrete beam of the same concrete strength.
纯弯段无腹筋的高强轻集料钢筋混凝土梁在破坏时表现出较强的脆性，延性要比同一强度等级普通混凝土梁略差。
The tests indicated that the ultimate shear strength of it was a little larger than normal-weight concrete beam's, and larger than lightweight concrete beam.
结果表明，高强次轻混凝土梁比轻集料混凝土梁的抗剪承载力有较大的提高，且比普通混凝土梁的抗剪强度大；
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