Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
High-strength nano silicon dioxide recycled concrete and preparation method thereof
The invention discloses a preparation method of high-strength nano silicon dioxide recycled concrete. The recycled concrete is prepared from the following raw materials: cement, recycled coarse aggregate, fine aggregate, water, nano silicon dioxide, sodium tripolyphosphate and a water reducing agent, wherein the mass ratio of the cement to the recycled coarse aggregate to the fine aggregate to the water to the nano silicon dioxide to the sodium tripolyphosphate to the polycarboxylic acid water reducing agent is 1 to (2.55 to 2.93) to (1.20 to 1.61) to (0.42 to 0.65) to (0.012 to 0.027) to (0.026 to 0.067) to (0.010 to 0.013), and the water cement ratio of the high-strength nano silicon dioxide recycled concrete is 1 to (2.0 to 2.5). The 28-day cubic compressive strength value of the high-strength nano silicon dioxide recycled concrete disclosed by the invention is as high as 76.9 MPa, and the high-strength nano silicon dioxide recycled concrete has high strength. Compared with common recycled concrete, the recycled concrete of nano SiO2 has better mechanical properties and durability, and has very good development and application prospects.
本发明公开了一种高强度纳米二氧化硅再生混凝土的制备方法，该再生混凝土是由原料水泥、再生粗骨料、细骨料、水、纳米二氧化硅、三聚磷酸钠、减水剂制备得到，所述的水泥∶再生粗骨料∶细骨料∶水∶纳米二氧化硅∶三聚磷酸钠∶聚羧酸减水剂的质量比为1∶(2.55～2.93)∶(1.20～1.61)∶(0.42～0.65)∶(0.012～0.027)∶(0.026～0.067)∶(0.010～0.013)，所述高强度纳米二氧化硅再生混凝土的水灰比为1∶2.0～2.5。本发明的高强度纳米二氧化硅再生混凝土的28天的立方体抗压强度值高达76.9MPa，具有高强度。与普通的再生混凝土相比，纳米SiO2的再生混凝土具有更好的力学性能和耐久性能，具有十分良好的发展和应用前景。
High-strength nano silicon dioxide recycled concrete and preparation method thereof
The invention discloses a preparation method of high-strength nano silicon dioxide recycled concrete. The recycled concrete is prepared from the following raw materials: cement, recycled coarse aggregate, fine aggregate, water, nano silicon dioxide, sodium tripolyphosphate and a water reducing agent, wherein the mass ratio of the cement to the recycled coarse aggregate to the fine aggregate to the water to the nano silicon dioxide to the sodium tripolyphosphate to the polycarboxylic acid water reducing agent is 1 to (2.55 to 2.93) to (1.20 to 1.61) to (0.42 to 0.65) to (0.012 to 0.027) to (0.026 to 0.067) to (0.010 to 0.013), and the water cement ratio of the high-strength nano silicon dioxide recycled concrete is 1 to (2.0 to 2.5). The 28-day cubic compressive strength value of the high-strength nano silicon dioxide recycled concrete disclosed by the invention is as high as 76.9 MPa, and the high-strength nano silicon dioxide recycled concrete has high strength. Compared with common recycled concrete, the recycled concrete of nano SiO2 has better mechanical properties and durability, and has very good development and application prospects.
本发明公开了一种高强度纳米二氧化硅再生混凝土的制备方法，该再生混凝土是由原料水泥、再生粗骨料、细骨料、水、纳米二氧化硅、三聚磷酸钠、减水剂制备得到，所述的水泥∶再生粗骨料∶细骨料∶水∶纳米二氧化硅∶三聚磷酸钠∶聚羧酸减水剂的质量比为1∶(2.55～2.93)∶(1.20～1.61)∶(0.42～0.65)∶(0.012～0.027)∶(0.026～0.067)∶(0.010～0.013)，所述高强度纳米二氧化硅再生混凝土的水灰比为1∶2.0～2.5。本发明的高强度纳米二氧化硅再生混凝土的28天的立方体抗压强度值高达76.9MPa，具有高强度。与普通的再生混凝土相比，纳米SiO2的再生混凝土具有更好的力学性能和耐久性能，具有十分良好的发展和应用前景。
High-strength nano silicon dioxide recycled concrete and preparation method thereof
一种高强度纳米二氧化硅再生混凝土及其制备方法
LI PEILONG (Autor:in)
15.10.2021
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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