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A platform for research: civil engineering, architecture and urbanism
Method for strengthening recycled concrete aggregate multiple times
The invention discloses a method for strengthening recycled concrete aggregate multiple times. The method comprises the following steps: 1, manually crushing waste concrete; 2, continuously crushing the concrete into aggregates with smaller particle sizes by using a jaw crusher; 3, carrying out shaping retreatment on the aggregate by using particle shaping equipment; 4, soaking the shaped and retreated aggregate with a dilute acetic acid solution; 5, fishing out the aggregate and conducting natural airing; 6, soaking the dried aggregate in a modified water glass solution; and 7, fishing out the aggregate and carrying out natural airing again to finish aggregate reinforcement. The method has the beneficial effects that the performance of the recycled aggregate is obviously improved through particle shaping; dilute acetic acid can react with cement mortar attached to the surface of the recycled aggregate, so the water absorption of the recycled aggregate is reduced, and the quality of the recycled aggregate is improved; water glass hardening can improve the strength of the recycled concrete aggregate; and urea is added into the water glass solution, so bonding capacity can be improved by about 25%. The method is favorable for saving resources and protecting the environment.
本发明公开了一种再生混凝土骨料多次强化的方法，包括如下步骤：1、人工破碎废弃混凝土；2、运用颚式破碎机将混凝土继续破碎成粒径较小的骨料；3、运用颗粒整形设备对骨料进行整形再处理；4、用稀醋酸溶液对整形再处理后的骨料进行浸泡；5、捞出骨料并自然晾干；6、将晾干后的骨料放入改性水玻璃溶液中浸泡；7、捞出骨料并再次自然晾干后，完成骨料强化。本专利的有益效果：颗粒整形使再生骨料的性能显著提高；稀醋酸可以和再生骨料表面附着水泥砂浆反应，从而降低再生骨料吸水率，改善再生骨料质量；水玻璃硬化可提高再生混凝土骨料的强度；在水玻璃溶液中加入尿素，粘结能力可提高25％左右；该方法有利于节约资源，保护环境。
Method for strengthening recycled concrete aggregate multiple times
The invention discloses a method for strengthening recycled concrete aggregate multiple times. The method comprises the following steps: 1, manually crushing waste concrete; 2, continuously crushing the concrete into aggregates with smaller particle sizes by using a jaw crusher; 3, carrying out shaping retreatment on the aggregate by using particle shaping equipment; 4, soaking the shaped and retreated aggregate with a dilute acetic acid solution; 5, fishing out the aggregate and conducting natural airing; 6, soaking the dried aggregate in a modified water glass solution; and 7, fishing out the aggregate and carrying out natural airing again to finish aggregate reinforcement. The method has the beneficial effects that the performance of the recycled aggregate is obviously improved through particle shaping; dilute acetic acid can react with cement mortar attached to the surface of the recycled aggregate, so the water absorption of the recycled aggregate is reduced, and the quality of the recycled aggregate is improved; water glass hardening can improve the strength of the recycled concrete aggregate; and urea is added into the water glass solution, so bonding capacity can be improved by about 25%. The method is favorable for saving resources and protecting the environment.
本发明公开了一种再生混凝土骨料多次强化的方法，包括如下步骤：1、人工破碎废弃混凝土；2、运用颚式破碎机将混凝土继续破碎成粒径较小的骨料；3、运用颗粒整形设备对骨料进行整形再处理；4、用稀醋酸溶液对整形再处理后的骨料进行浸泡；5、捞出骨料并自然晾干；6、将晾干后的骨料放入改性水玻璃溶液中浸泡；7、捞出骨料并再次自然晾干后，完成骨料强化。本专利的有益效果：颗粒整形使再生骨料的性能显著提高；稀醋酸可以和再生骨料表面附着水泥砂浆反应，从而降低再生骨料吸水率，改善再生骨料质量；水玻璃硬化可提高再生混凝土骨料的强度；在水玻璃溶液中加入尿素，粘结能力可提高25％左右；该方法有利于节约资源，保护环境。
Method for strengthening recycled concrete aggregate multiple times
一种再生混凝土骨料多次强化的方法
WANG ERCHENG (author) / ZHU TAO (author) / JIA YARUI (author) / YU LIANHAO (author) / HAN BOXIONG (author) / ZHANG FAN (author)
2021-11-02
Patent
Electronic Resource
Chinese
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