Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Bio-based nano-modified regenerated pervious concrete and preparation method thereof
The invention provides bio-based nano-modified regenerated pervious concrete and a preparation method thereof. The mechanical property and freezing resistance of the pervious concrete can be improved, and the permeability coefficient is increased. The bio-based nano-modified regenerated pervious concrete is prepared from the following raw materials: cement, fly ash, granulated blast furnace slag powder, silica fume, nano-cellulose, an air entraining agent, regenerated coarse aggregate and water, the mass ratio of the cement to the fly ash to the granulated blast furnace slag powder to the silica fume to the nano cellulose to the air entraining agent to the regenerated coarse aggregate is 1 to (0.1 to 0.4) to (0.1 to 0.5) to (0 to 0.05) to (0.0002 to 0.002) to (0 to 0.0002) to (4.2 to 5.0) to (0.36 to 0.56). The preparation method of the bio-based nano-modified regenerated pervious concrete comprises the following steps of adding nano-crystalline cellulose into water to be pre-dispersed, wherein the mass ratio of the water to the nano-crystalline cellulose is 2-3, uniformly dry-mixing the regenerated coarse aggregate, the cement, the fly ash, the granulated blast furnace slag powder and the silica fume, adding water, and stirring for 1-2 minutes, adding the pre-dispersed nano cellulose and the air entraining agent, and then stirring for 2-4 minutes until the mixture is uniform.
本发明提供了一种生物基纳米改性再生透水混凝土及其制备方法，能够提高透水混凝土的力学性能和抗冻性，并提高了透水系数。生物基纳米改性再生透水混凝土，原料包括水泥、粉煤灰、粒化高炉矿渣粉、硅灰、纳米纤维素、引气剂、再生粗骨料和水；水泥、粉煤灰、粒化高炉矿渣粉、硅灰、纳米纤维素、引气剂、再生粗骨料的质量比为1：0.1‑0.4：0.1‑0.5：0‑0.05：0.0002‑0.002：0‑0.0002：4.2‑5.0：0.36‑0.56。生物基纳米改性再生透水混凝土的制备方法，包括以下步骤：纳米纤维素加入水中预分散，水：纳米纤维素质量比=2~3；再生粗骨料、水泥、粉煤灰、粒化高炉矿渣粉、硅灰干混均匀，加入水搅拌1‑2min；加入预分散好的纳米纤维素和引气剂，接着搅拌2‑4min至均匀。
Bio-based nano-modified regenerated pervious concrete and preparation method thereof
The invention provides bio-based nano-modified regenerated pervious concrete and a preparation method thereof. The mechanical property and freezing resistance of the pervious concrete can be improved, and the permeability coefficient is increased. The bio-based nano-modified regenerated pervious concrete is prepared from the following raw materials: cement, fly ash, granulated blast furnace slag powder, silica fume, nano-cellulose, an air entraining agent, regenerated coarse aggregate and water, the mass ratio of the cement to the fly ash to the granulated blast furnace slag powder to the silica fume to the nano cellulose to the air entraining agent to the regenerated coarse aggregate is 1 to (0.1 to 0.4) to (0.1 to 0.5) to (0 to 0.05) to (0.0002 to 0.002) to (0 to 0.0002) to (4.2 to 5.0) to (0.36 to 0.56). The preparation method of the bio-based nano-modified regenerated pervious concrete comprises the following steps of adding nano-crystalline cellulose into water to be pre-dispersed, wherein the mass ratio of the water to the nano-crystalline cellulose is 2-3, uniformly dry-mixing the regenerated coarse aggregate, the cement, the fly ash, the granulated blast furnace slag powder and the silica fume, adding water, and stirring for 1-2 minutes, adding the pre-dispersed nano cellulose and the air entraining agent, and then stirring for 2-4 minutes until the mixture is uniform.
本发明提供了一种生物基纳米改性再生透水混凝土及其制备方法，能够提高透水混凝土的力学性能和抗冻性，并提高了透水系数。生物基纳米改性再生透水混凝土，原料包括水泥、粉煤灰、粒化高炉矿渣粉、硅灰、纳米纤维素、引气剂、再生粗骨料和水；水泥、粉煤灰、粒化高炉矿渣粉、硅灰、纳米纤维素、引气剂、再生粗骨料的质量比为1：0.1‑0.4：0.1‑0.5：0‑0.05：0.0002‑0.002：0‑0.0002：4.2‑5.0：0.36‑0.56。生物基纳米改性再生透水混凝土的制备方法，包括以下步骤：纳米纤维素加入水中预分散，水：纳米纤维素质量比=2~3；再生粗骨料、水泥、粉煤灰、粒化高炉矿渣粉、硅灰干混均匀，加入水搅拌1‑2min；加入预分散好的纳米纤维素和引气剂，接着搅拌2‑4min至均匀。
Bio-based nano-modified regenerated pervious concrete and preparation method thereof
生物基纳米改性再生透水混凝土及其制备方法
ZHAO YIHUA (Autor:in) / YANG JUNLEI (Autor:in) / LIU CHAO (Autor:in) / LIU GUIHAI (Autor:in) / WANG WEI (Autor:in) / AN TAIQING (Autor:in) / LYU GUOWEI (Autor:in) / LEI ZHEN (Autor:in) / LIN GUANGZHI (Autor:in) / LIU QIAOLING (Autor:in)
03.08.2021
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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