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介绍轻骨料混凝土的特性及与普通混凝土的区别。用实例对轻骨料混凝土桥梁作了经济分析 ,并提出了发展我国轻骨料混凝土桥梁的建议
Describe the characteristics of lightweight aggregate concrete and ordinary concrete. The economic analysis of lightweight aggregate concrete bridges is given with examples, and the suggestion of developing the lightweight aggregate concrete bridges in China