由于再生混凝土骨料来源的广泛性和混凝土材料使用环境的差异性，与同配合比的天然骨料混凝土（Natural Aggregate Concrete, NAC）相比，无论是短期性能如混凝土强度、工作性还是长期性能如耐久性，RAC均劣于NAC。
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Along with the increase of age, its fracture toughness grows, and the elevated range is in accordance with the natural aggregate concrete basically;
再生混凝土断裂韧度随龄期的增加而提高，提高的幅度与天然骨料混凝土基本一致，其趋势在增加；
Using cracked brick as coarse aggregate in concrete can reduce pollution and decrease the usage of natural aggregate.
将碎砖作为混凝土的粗骨料，能够减少污染和减少天然骨料的使用。
In this paper, the concrete adding by sewer sludge by replacing of natural aggregate was prepared.
本文研究了以管沟污泥等量替代天然细集料制备水泥混凝土。
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