- 張亞梅,秦鴻根,孫 偉,郝東明,寧 鐘
2002年第2期
摘要
引用本文
摘 要:通過實驗研究探索了再生混凝土配合比設計的方法, 提出了在普通混凝土配合比設計的基礎上進行廢混凝土骨料的預吸水, 并通過摻加優質粉煤灰、減水劑或二者復合, 可成功地配制同時滿足工作性和強度要求的再生混凝土。 根據這種方法 , 配制的全部使用廢混凝土骨料為粗骨料的再生混凝土28天的抗壓強度高達54.6MPa。
Abstract: The approach for the proportion design of recycled aggregate concrete is investigated according to the experimental study.It is suggested that the proportion of cement, sand and aggregate can be calculated based on the current proportion design code for ordinary concrete.As regard to the water content, the water adsorption of waste concrete aggregate within certain time period should also be considered and added to the water content calculated according to the code for ordinary concrete .In addition, the using of good quality fly ash and superplasticizer can improve the strength of recycled aggregate concrete.The highest compressive strength of the concrete, in which all aggregate is insteaded by waste concrete aggregate, is up to 54.6MPa at 28days.
摘 要:通過實驗研究探索了再生混凝土配合比設計的方法, 提出了在普通混凝土配合比設計的基礎上進行廢混凝土骨料的預吸水, 并通過摻加優質粉煤灰、減水劑或二者復合, 可成功地配制同時滿足工作性和強度要求的再生混凝土。 根據這種方法 , 配制的全部使用廢混凝土骨料為粗骨料的再生混凝土28天的抗壓強度高達54.6MPa。
Abstract: The approach for the proportion design of recycled aggregate concrete is investigated according to the experimental study.It is suggested that the proportion of cement, sand and aggregate can be calculated based on the current proportion design code for ordinary concrete.As regard to the water content, the water adsorption of waste concrete aggregate within certain time period should also be considered and added to the water content calculated according to the code for ordinary concrete .In addition, the using of good quality fly ash and superplasticizer can improve the strength of recycled aggregate concrete.The highest compressive strength of the concrete, in which all aggregate is insteaded by waste concrete aggregate, is up to 54.6MPa at 28days.