Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Alkali-activated fly ash/slag recycled concrete and preparation method thereof
The invention discloses alkali-activated fly ash/slag recycled concrete and a preparation method thereof. The recycled concrete is prepared from the following raw materials in parts by mass: 84-252 parts of fly ash, 168-336 parts of slag, 160-231 parts of an alkali-activated solution, 620-680 parts of fine aggregate, 0-784 parts of natural coarse aggregate, 336-1120 parts of recycled coarse aggregate, 0.5-1.2 parts of fibers and 0.5-1.6 parts of a retarder. The raw materials are uniformly mixed and stirred according to a specific sequence to obtain the recycled concrete. According to the recycled concrete prepared by the invention, slag, fly ash industrial solid wastes and construction wastes are fully utilized, the consumption of cement and natural gravels is reduced, the production process is low in cost, green, low-carbon, energy-saving and emission-reducing, and the resource utilization of the solid wastes is effectively realized. Meanwhile, the recycled concrete prepared by the method is high in strength, simple in process and convenient to operate, overcomes the adverse effect of strength caused by recycled coarse aggregate, meets the requirements of actual engineering, and is remarkable in economic, social and environmental benefits.
本发明公开了一种碱激发粉煤灰/矿渣再生混凝土及其制备方法。制备所述的再生混凝土的各原料按质量份的配比为：粉煤灰84‑252份、矿渣168‑336份、碱激发溶液160‑231份、细骨料620‑680份、天然粗骨料0‑784份、再生粗骨料336‑1120份、纤维0.5‑1.2份、缓凝剂0.5‑1.6份；各原料按特定顺序混合搅拌均匀后得到再生混凝土。本发明制备的再生混凝土充分利用了矿渣、粉煤灰工业固废和建筑垃圾，减少了水泥和天然碎石的消耗，生产过程成本低廉、绿色低碳、节能减排，有效地实现了固废的资源化利用。同时，本发明制备的再生混凝土强度高，工艺简单、操作方便，且克服了再生粗骨料带来的强度不利影响，满足实际工程要求，经济、社会和环境效益显著。
Alkali-activated fly ash/slag recycled concrete and preparation method thereof
The invention discloses alkali-activated fly ash/slag recycled concrete and a preparation method thereof. The recycled concrete is prepared from the following raw materials in parts by mass: 84-252 parts of fly ash, 168-336 parts of slag, 160-231 parts of an alkali-activated solution, 620-680 parts of fine aggregate, 0-784 parts of natural coarse aggregate, 336-1120 parts of recycled coarse aggregate, 0.5-1.2 parts of fibers and 0.5-1.6 parts of a retarder. The raw materials are uniformly mixed and stirred according to a specific sequence to obtain the recycled concrete. According to the recycled concrete prepared by the invention, slag, fly ash industrial solid wastes and construction wastes are fully utilized, the consumption of cement and natural gravels is reduced, the production process is low in cost, green, low-carbon, energy-saving and emission-reducing, and the resource utilization of the solid wastes is effectively realized. Meanwhile, the recycled concrete prepared by the method is high in strength, simple in process and convenient to operate, overcomes the adverse effect of strength caused by recycled coarse aggregate, meets the requirements of actual engineering, and is remarkable in economic, social and environmental benefits.
本发明公开了一种碱激发粉煤灰/矿渣再生混凝土及其制备方法。制备所述的再生混凝土的各原料按质量份的配比为：粉煤灰84‑252份、矿渣168‑336份、碱激发溶液160‑231份、细骨料620‑680份、天然粗骨料0‑784份、再生粗骨料336‑1120份、纤维0.5‑1.2份、缓凝剂0.5‑1.6份；各原料按特定顺序混合搅拌均匀后得到再生混凝土。本发明制备的再生混凝土充分利用了矿渣、粉煤灰工业固废和建筑垃圾，减少了水泥和天然碎石的消耗，生产过程成本低廉、绿色低碳、节能减排，有效地实现了固废的资源化利用。同时，本发明制备的再生混凝土强度高，工艺简单、操作方便，且克服了再生粗骨料带来的强度不利影响，满足实际工程要求，经济、社会和环境效益显著。
Alkali-activated fly ash/slag recycled concrete and preparation method thereof
一种碱激发粉煤灰/矿渣再生混凝土及其制备方法
BIAN WEI (Autor:in) / ZHOU YAJUN (Autor:in) / LIU ZHISHENG (Autor:in) / ZHANG YANCONG (Autor:in) / LIU PENGFEI (Autor:in) / HAO JINGAO (Autor:in) / LI YALONG (Autor:in) / RONG YAPENG (Autor:in) / ZHOU XINXING (Autor:in) / GAO XUEKAI (Autor:in)
22.01.2021
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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