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A platform for research: civil engineering, architecture and urbanism
Method for regenerating ultra-high performance concrete from waste concrete
The invention discloses a method for recycling ultra-high performance concrete from waste concrete, which comprises the following steps: S1, mechanical crushing: collecting the waste concrete, cleaning and removing impurities, and crushing the waste concrete into fine aggregate through the mechanical crushing; s2, two-stage crushing: crushing the waste concrete to prepare fine aggregate, adopting a two-stage crushing process, firstly crushing the waste concrete into coarse aggregate with the particle size of 5-30mm, abandoning the undersize material, repeatedly crushing the oversize part, mixing the obtained screened aggregate with an alkaline activator, and carrying out chemical reaction to activate active components in the aggregate; s3, cone crushing; and S5, preparing concrete. According to the method, the waste concrete is subjected to secondary crushing to prepare the high-quality reclaimed sand, and the reclaimed sand is used for preparing the ultra-high performance concrete, so that the current situation that high-quality raw materials are short of supply is solved, and the application additional value of the reclaimed material of the waste concrete is also improved.
本发明公开了一种废弃混凝土再生超高性能混凝土的方法，包括以下步骤：S1、机械破碎，收集废弃混凝土，进行清洗、剔除杂质，废弃混凝土需通过机械破碎成细骨料；S2、两级破碎，废弃混凝土破碎制细骨料，采用两级破碎工艺，先将废弃混凝土破碎成5～30mm粒径的粗骨料，筛下材料舍弃，筛上部分重复破碎，将得到的筛分后的骨料与碱性激发剂混合，进行化学反应以激活骨料中的活性成分；S3、圆锥破碎；S5、配置混凝土。本发明将废弃混凝土经过二级破碎制成高品质的再生砂，再利用再生砂配制超高性能混凝土，解决优质原材料供不应求的现状，又提高了废弃混凝土的再生材料的应用附加值。
Method for regenerating ultra-high performance concrete from waste concrete
The invention discloses a method for recycling ultra-high performance concrete from waste concrete, which comprises the following steps: S1, mechanical crushing: collecting the waste concrete, cleaning and removing impurities, and crushing the waste concrete into fine aggregate through the mechanical crushing; s2, two-stage crushing: crushing the waste concrete to prepare fine aggregate, adopting a two-stage crushing process, firstly crushing the waste concrete into coarse aggregate with the particle size of 5-30mm, abandoning the undersize material, repeatedly crushing the oversize part, mixing the obtained screened aggregate with an alkaline activator, and carrying out chemical reaction to activate active components in the aggregate; s3, cone crushing; and S5, preparing concrete. According to the method, the waste concrete is subjected to secondary crushing to prepare the high-quality reclaimed sand, and the reclaimed sand is used for preparing the ultra-high performance concrete, so that the current situation that high-quality raw materials are short of supply is solved, and the application additional value of the reclaimed material of the waste concrete is also improved.
本发明公开了一种废弃混凝土再生超高性能混凝土的方法，包括以下步骤：S1、机械破碎，收集废弃混凝土，进行清洗、剔除杂质，废弃混凝土需通过机械破碎成细骨料；S2、两级破碎，废弃混凝土破碎制细骨料，采用两级破碎工艺，先将废弃混凝土破碎成5～30mm粒径的粗骨料，筛下材料舍弃，筛上部分重复破碎，将得到的筛分后的骨料与碱性激发剂混合，进行化学反应以激活骨料中的活性成分；S3、圆锥破碎；S5、配置混凝土。本发明将废弃混凝土经过二级破碎制成高品质的再生砂，再利用再生砂配制超高性能混凝土，解决优质原材料供不应求的现状，又提高了废弃混凝土的再生材料的应用附加值。
Method for regenerating ultra-high performance concrete from waste concrete
一种废弃混凝土再生超高性能混凝土的方法
LIAN CHUNMING (author) / LIU PENG (author) / FANG XING (author) / SHI CHENPENG (author) / CHEN YANG (author) / ZHAO SHENGYING (author) / LI SHENGFEI (author) / WANG DI (author) / LI YINGJIE (author)
2024-07-16
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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