Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Environmentally-friendly recycled concrete and preparation technology thereof
The invention relates to an environmentally-friendly recycled concrete and a preparation technology thereof. The recycled concrete is prepared from, by weight, 45-55 parts of recycled coarse aggregates, 15-25 parts of natural coarse aggregates, 15-20 parts of activated water, 10-20 parts of hydroxyl styrene-butadiene latex, 20-40 parts of fine sands, 5-12 parts of Portland cement, 5-8 parts of polyurethane/polyvinyl alcohol fibers, 40-60 parts of a filler, 4-6 parts of sodium dodecylbenzenesulfonate, 3-6 parts of an adhesive and 3-5 parts of a water reducing agent. The preparation technology comprises the following steps: S1, polishing and crushing waste building materials; S2, removing needle-shaped and sheet-shaped wastes; S3, separating out metal impurities in the recycled coarse aggregates by using a magnetic screening machine; S4, uniformly stirring the recycled coarse aggregates, the natural coarse aggregate and the fine sands, adding Portland cement, the activated water, the polyurethane/polyvinyl alcohol fibers, the filler and sodium dodecylbenzenesulfonate, performing stirring until uniformity, adding the adhesive and the water reducing agent, and performing stirring untiluniformity; and S5, pouring and vibrating the recycled concrete slurry to mold the recycled concrete slurry. The recycled concrete prepared in the invention has good impermeability.
本发明涉及一种环保再生混凝土及其制备工艺，再生混凝土按重量份包括：再生粗骨料45‑55份、天然粗骨料15‑25份、活化水15‑20份、羟基丁苯胶乳10‑20份、细砂20‑40份、硅酸盐水泥5‑12份、聚氨酯/聚乙烯醇纤维5‑8份、填料40‑60份、十二烷基苯磺酸钠4‑6份、粘合剂3‑6份以及减水剂3‑5份；制备工艺包括：S1.对废弃建材进行打磨并粉碎；S2.剔除针状、片状废料；S3.使用磁筛机分离出再生粗骨料中的金属杂质；S4.将再生粗骨料、天然粗骨料、细砂搅拌均匀；再加入硅酸盐水泥、活化水、聚氨酯/聚乙烯醇纤维、填料以及十二烷基苯磺酸钠搅拌均匀；再加入粘合剂以及减水剂搅拌均匀；S5.对再生混凝土浆料进行浇筑、振捣，使之成型。本发明制备的再生混凝土具有良好的抗渗性能。
Environmentally-friendly recycled concrete and preparation technology thereof
The invention relates to an environmentally-friendly recycled concrete and a preparation technology thereof. The recycled concrete is prepared from, by weight, 45-55 parts of recycled coarse aggregates, 15-25 parts of natural coarse aggregates, 15-20 parts of activated water, 10-20 parts of hydroxyl styrene-butadiene latex, 20-40 parts of fine sands, 5-12 parts of Portland cement, 5-8 parts of polyurethane/polyvinyl alcohol fibers, 40-60 parts of a filler, 4-6 parts of sodium dodecylbenzenesulfonate, 3-6 parts of an adhesive and 3-5 parts of a water reducing agent. The preparation technology comprises the following steps: S1, polishing and crushing waste building materials; S2, removing needle-shaped and sheet-shaped wastes; S3, separating out metal impurities in the recycled coarse aggregates by using a magnetic screening machine; S4, uniformly stirring the recycled coarse aggregates, the natural coarse aggregate and the fine sands, adding Portland cement, the activated water, the polyurethane/polyvinyl alcohol fibers, the filler and sodium dodecylbenzenesulfonate, performing stirring until uniformity, adding the adhesive and the water reducing agent, and performing stirring untiluniformity; and S5, pouring and vibrating the recycled concrete slurry to mold the recycled concrete slurry. The recycled concrete prepared in the invention has good impermeability.
本发明涉及一种环保再生混凝土及其制备工艺，再生混凝土按重量份包括：再生粗骨料45‑55份、天然粗骨料15‑25份、活化水15‑20份、羟基丁苯胶乳10‑20份、细砂20‑40份、硅酸盐水泥5‑12份、聚氨酯/聚乙烯醇纤维5‑8份、填料40‑60份、十二烷基苯磺酸钠4‑6份、粘合剂3‑6份以及减水剂3‑5份；制备工艺包括：S1.对废弃建材进行打磨并粉碎；S2.剔除针状、片状废料；S3.使用磁筛机分离出再生粗骨料中的金属杂质；S4.将再生粗骨料、天然粗骨料、细砂搅拌均匀；再加入硅酸盐水泥、活化水、聚氨酯/聚乙烯醇纤维、填料以及十二烷基苯磺酸钠搅拌均匀；再加入粘合剂以及减水剂搅拌均匀；S5.对再生混凝土浆料进行浇筑、振捣，使之成型。本发明制备的再生混凝土具有良好的抗渗性能。
Environmentally-friendly recycled concrete and preparation technology thereof
一种环保再生混凝土及其制备工艺
DENG LIJUN (Autor:in) / YANG SHUNTANG (Autor:in)
10.04.2020
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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