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A platform for research: civil engineering, architecture and urbanism
Construction waste recycled aggregate and preparation method and application thereof
The invention discloses a construction waste recycled aggregate which is characterized in that the proportion of components such as concrete in the recycled aggregate is controlled through two-stage crushing, four-stage separation and repeated impurity removal, and the content of needle-sheet-shaped components is controlled to be 1.5-2.4 wt%, the mud content is 3.6-4.3 wt%, and the micro powder content is 2.3-2.9 wt%, so that the crushing value of the prepared recycled aggregate is slightly greater than 30% and less than 35%; the construction waste recycled aggregate comprises the following components in percentage by weight: 60-80% of mortar and concrete, 36.5-42.1% of concrete, 0.1-0.3% of impurities and the balance of bricks and tiles. The construction waste recycled aggregate meets the requirements of secondary and below highway base layers, can realize further recycling of various construction wastes, improves economic benefits, and is beneficial to environmental protection.
本发明公开了一种建筑垃圾再生骨料，通过二级破碎，四级分离和多次除杂控制再生集料中混凝土等组分的配比，并将针片状含量控制为1.5‑2.4wt％，含泥量3.6‑4.3wt％,微粉含量2.3‑2.9wt％，从而使制得的再生集料压碎值略大于30％，小于35％，其组成：砂浆和混凝土60‑80wt％，其中混凝土含量为36.5‑42.1wt％，杂物含量为0.1‑0.3wt％，其余为砖瓦。本发明提供的建筑垃圾再生骨料满足二级及以下公路基层要求，可实现各种建筑垃圾进一步回收利用，提高了经济效益，并有助于环保。
Construction waste recycled aggregate and preparation method and application thereof
The invention discloses a construction waste recycled aggregate which is characterized in that the proportion of components such as concrete in the recycled aggregate is controlled through two-stage crushing, four-stage separation and repeated impurity removal, and the content of needle-sheet-shaped components is controlled to be 1.5-2.4 wt%, the mud content is 3.6-4.3 wt%, and the micro powder content is 2.3-2.9 wt%, so that the crushing value of the prepared recycled aggregate is slightly greater than 30% and less than 35%; the construction waste recycled aggregate comprises the following components in percentage by weight: 60-80% of mortar and concrete, 36.5-42.1% of concrete, 0.1-0.3% of impurities and the balance of bricks and tiles. The construction waste recycled aggregate meets the requirements of secondary and below highway base layers, can realize further recycling of various construction wastes, improves economic benefits, and is beneficial to environmental protection.
本发明公开了一种建筑垃圾再生骨料，通过二级破碎，四级分离和多次除杂控制再生集料中混凝土等组分的配比，并将针片状含量控制为1.5‑2.4wt％，含泥量3.6‑4.3wt％,微粉含量2.3‑2.9wt％，从而使制得的再生集料压碎值略大于30％，小于35％，其组成：砂浆和混凝土60‑80wt％，其中混凝土含量为36.5‑42.1wt％，杂物含量为0.1‑0.3wt％，其余为砖瓦。本发明提供的建筑垃圾再生骨料满足二级及以下公路基层要求，可实现各种建筑垃圾进一步回收利用，提高了经济效益，并有助于环保。
Construction waste recycled aggregate and preparation method and application thereof
一种建筑垃圾再生骨料、制备方法及其应用
WANG MIAO (author) / LI YANLING (author) / ZHOU WEI (author) / HE QIANG (author) / LIU WENCAI (author) / CHEN XIANGJIE (author)
2021-10-22
Patent
Electronic Resource
Chinese
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