采用快速冻融法研究了养护制度、轻集料的预湿程度和体积砂率对高强轻集料混凝土抗冻性能的影响。结果表明：轻集料混凝土具有良好的抗冻性能。

The effect of curing regime, pre-wetting degree of lightweight aggregate, and the volume rate of sand on the frost resistance of high strength lightweight concrete is investigated.

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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；

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.

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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。

And reinforced high-strength lightweight concrete beam is less ductile as compared with the normal-weight concrete beam of the same concrete strength.

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