再生混凝土二次再生利用研究

Study on the recycling of recycled aggregated concrete

随着对再生混凝土研究的深入以及建筑原材料的匮乏,可以预见在未来再生混凝土将是工程建设中重要的构成形式。当用再生集料构筑的工程接近或超过其使用寿命而需要拆除或维修时,能否将再生混凝土二次再生利用又将成为一个现实的问题。基于再生集料的基本性能直接影响再生混凝土性能的观点,研究了二次再生水泥混凝土材料组成、二次再生集料的性能指标,并提出了改善二次再生集料性能的措施。

With the development of recycled aggregated concrete researches,and the exhausting of construction materials,it＇s safe to predict that wider application of recycled aggregated to engineering construction is an inevitable trend.Here a practical problem is presented whether the concrete can be recycled again when the structure constructed by recycled aggregates needs to be demolished or maintained as its service life is coming to an end.Based on the basic properties of recycled concrete are directly affected by the recycled concrete aggregate,it explores the compo-nents of re-recycled aggregated concrete;the performance index of re-recycled aggregates and puts forward some suggestions on how to improve the property of re-recycled aggregates.