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A platform for research: civil engineering, architecture and urbanism
Preparation method of modified recycled coarse aggregate and recycled concrete
The invention provides a preparation method of modified recycled coarse aggregate and recycled concrete, and the preparation method comprises the following steps: carrying out vacuum treatment on the recycled coarse aggregate to obtain pretreated recycled coarse aggregate; the preparation method comprises the following steps: adding a nano modifier and a dispersant into water, and stirring to obtain a nano modifier mixed solution; in a vacuum environment, adding and immersing the pretreated recycled coarse aggregate into a nano modifier mixed solution, starting to soak the recycled coarse aggregate, introducing carbon dioxide for carbonization treatment while soaking, taking out the recycled coarse aggregate after a period of time, and drying the recycled coarse aggregate until the weight of the recycled coarse aggregate is constant to obtain modified recycled coarse aggregate; and finally, preparing the recycled concrete by using a mixed solution of the modified recycled coarse aggregate and the nano modifier soaked with the recycled coarse aggregate. The vacuum pretreatment process, the nano-modification process and the carbonization treatment process are effectively integrated, so that the vacuum pretreatment process, the nano-modification process and the carbonization treatment process are mutually assisted, and the performance of the recycled coarse aggregate is jointly optimized, so that the performance of the recycled concrete is improved.
本发明提供了一种改性再生粗骨料的制备方法及再生混凝土，对再生粗骨料进行真空处理，得到预处理后的再生粗骨料；将纳米改性剂和分散剂加入水中，搅拌得到纳米改性剂混合液；在真空环境下，将纳米改性剂混合液加入并浸没预处理后的再生粗骨料，开始浸泡处理再生粗骨料，在浸泡处理的同时通入二氧化碳进行碳化处理，一段时间后取出烘干至恒重后得到改性再生粗骨料；最后将改性再生粗骨料与浸泡再生粗骨料后的纳米改性剂混合液用于再生混凝土的制备。有效地把真空预处理、纳米改性和碳化处理过程加以集成，使得它们相互助力，共同优化了再生粗骨料的性能，从而提升再生混凝土的性能。
Preparation method of modified recycled coarse aggregate and recycled concrete
The invention provides a preparation method of modified recycled coarse aggregate and recycled concrete, and the preparation method comprises the following steps: carrying out vacuum treatment on the recycled coarse aggregate to obtain pretreated recycled coarse aggregate; the preparation method comprises the following steps: adding a nano modifier and a dispersant into water, and stirring to obtain a nano modifier mixed solution; in a vacuum environment, adding and immersing the pretreated recycled coarse aggregate into a nano modifier mixed solution, starting to soak the recycled coarse aggregate, introducing carbon dioxide for carbonization treatment while soaking, taking out the recycled coarse aggregate after a period of time, and drying the recycled coarse aggregate until the weight of the recycled coarse aggregate is constant to obtain modified recycled coarse aggregate; and finally, preparing the recycled concrete by using a mixed solution of the modified recycled coarse aggregate and the nano modifier soaked with the recycled coarse aggregate. The vacuum pretreatment process, the nano-modification process and the carbonization treatment process are effectively integrated, so that the vacuum pretreatment process, the nano-modification process and the carbonization treatment process are mutually assisted, and the performance of the recycled coarse aggregate is jointly optimized, so that the performance of the recycled concrete is improved.
本发明提供了一种改性再生粗骨料的制备方法及再生混凝土，对再生粗骨料进行真空处理，得到预处理后的再生粗骨料；将纳米改性剂和分散剂加入水中，搅拌得到纳米改性剂混合液；在真空环境下，将纳米改性剂混合液加入并浸没预处理后的再生粗骨料，开始浸泡处理再生粗骨料，在浸泡处理的同时通入二氧化碳进行碳化处理，一段时间后取出烘干至恒重后得到改性再生粗骨料；最后将改性再生粗骨料与浸泡再生粗骨料后的纳米改性剂混合液用于再生混凝土的制备。有效地把真空预处理、纳米改性和碳化处理过程加以集成，使得它们相互助力，共同优化了再生粗骨料的性能，从而提升再生混凝土的性能。
Preparation method of modified recycled coarse aggregate and recycled concrete
一种改性再生粗骨料的制备方法及再生混凝土
WU LINSONG (author) / SHI HAORAN (author) / XU JIAXING (author) / YU MINRUI (author) / ZHAO XIEJUAN (author) / YU HAOTIAN (author) / DING YANG (author)
2024-12-06
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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