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A platform for research: civil engineering, architecture and urbanism
Method for removing mortar attached to aggregate of air-entrained recycled concrete
The invention discloses a method for removing aggregate attached mortar of air-entrained recycled concrete, which comprises the following steps of: carrying out vacuum water retention, carrying out a dry pumping process and a wet pumping process on air-entrained concrete fragments, loading the air-entrained concrete fragments into a vacuumizing device in the dry pumping process, and carrying out a first preset vacuumizing process; after water is injected into the vacuumizing device under the condition that the vacuum degree is kept, a second preset vacuumizing process is carried out, and then the wet vacuumizing process is completed; performing freeze-thaw modification of water freezing and water thawing on the air entraining concrete fragments subjected to the vacuum water retention treatment; according to the method for removing the mortar attached to the aggregate of the air-entraining recycled concrete, through the vacuum water retention step, the freeze-thaw stripping effect is improved, air holes and pores in the mortar of the air-entraining concrete fragments are opened through negative pressure in the dry pumping process, water is injected under the condition that the vacuum degree is kept in the wet pumping process, and the air-entraining effect is improved. The opened air holes and pores suck the injected water, so that the air-entraining concrete fragments are in a saturated state, and the subsequent mortar stripping effect is further improved.
本申请公开了一种引气再生混凝土的骨料附着砂浆去除方法，真空保水，将引气混凝土碎块进行干抽过程和湿抽过程，干抽过程中将引气混凝土碎块装入抽真空装置中进行第一预设抽真空流程，保持真空度的条件下向抽真空装置中注水后，进行第二预设抽真空流程，进而完成湿抽过程；将经过真空保水处理后的引气混凝土碎块进行水冻水融的冻融改性；本发明提供的引气再生混凝土的骨料附着砂浆去除方法，通过真空保水步骤，提升了冻融剥落的功效提升，干抽过程中利用负压将引气混凝土碎块的砂浆中的气孔和孔隙打开，在湿抽过程中保持真空度的条件下注水，被打开的气孔和孔隙将注入的水吸入，使引气混凝土碎块实现饱和状态，进而提升后续砂浆剥离的效果。
Method for removing mortar attached to aggregate of air-entrained recycled concrete
The invention discloses a method for removing aggregate attached mortar of air-entrained recycled concrete, which comprises the following steps of: carrying out vacuum water retention, carrying out a dry pumping process and a wet pumping process on air-entrained concrete fragments, loading the air-entrained concrete fragments into a vacuumizing device in the dry pumping process, and carrying out a first preset vacuumizing process; after water is injected into the vacuumizing device under the condition that the vacuum degree is kept, a second preset vacuumizing process is carried out, and then the wet vacuumizing process is completed; performing freeze-thaw modification of water freezing and water thawing on the air entraining concrete fragments subjected to the vacuum water retention treatment; according to the method for removing the mortar attached to the aggregate of the air-entraining recycled concrete, through the vacuum water retention step, the freeze-thaw stripping effect is improved, air holes and pores in the mortar of the air-entraining concrete fragments are opened through negative pressure in the dry pumping process, water is injected under the condition that the vacuum degree is kept in the wet pumping process, and the air-entraining effect is improved. The opened air holes and pores suck the injected water, so that the air-entraining concrete fragments are in a saturated state, and the subsequent mortar stripping effect is further improved.
本申请公开了一种引气再生混凝土的骨料附着砂浆去除方法，真空保水，将引气混凝土碎块进行干抽过程和湿抽过程，干抽过程中将引气混凝土碎块装入抽真空装置中进行第一预设抽真空流程，保持真空度的条件下向抽真空装置中注水后，进行第二预设抽真空流程，进而完成湿抽过程；将经过真空保水处理后的引气混凝土碎块进行水冻水融的冻融改性；本发明提供的引气再生混凝土的骨料附着砂浆去除方法，通过真空保水步骤，提升了冻融剥落的功效提升，干抽过程中利用负压将引气混凝土碎块的砂浆中的气孔和孔隙打开，在湿抽过程中保持真空度的条件下注水，被打开的气孔和孔隙将注入的水吸入，使引气混凝土碎块实现饱和状态，进而提升后续砂浆剥离的效果。
Method for removing mortar attached to aggregate of air-entrained recycled concrete
引气再生混凝土的骨料附着砂浆去除方法
YE LINJIE (author) / NING YINGJIE (author) / WU DIGAO (author) / WANG MINGJING (author) / BAI LIHUI (author) / GONG FUYUAN (author) / XIA PENG (author)
2023-11-07
Patent
Electronic Resource
Chinese
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