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High-adhesive-property geopolymer recycled concrete and preparation method thereof
The invention discloses geopolymer recycled concrete with high adhesive property and a preparation method thereof, and belongs to the technical field of concrete preparation. The recycled concrete comprises the following raw materials in percentage: 15%-20% of slag powder, 15%-20% of fly ash, 5%-10% of potassium silicate, 1%-5% of sodium hydroxide, 10%-15% of fine aggregate, 20%-25% of coarse aggregate, 0.5%-1% of nano SiO2, 1%-3% of steel fiber, 0.5%-1.5% of a microbial solution, 1%-2% of a composite solution, 0.5%-1.25% of microorganisms and the balance of water. Microorganisms and a solution generated by the microorganisms are used for filling tiny gaps in the concrete, so that the porosity can be reduced, and the compactness of the concrete can be enhanced. In addition, the microorganisms can accelerate the deposition process of calcium carbonate, and in the process, calcium carbonate has high chemical reaction capacity and can chemically react with aggregate to generate chemical bonds. The chemical bonding not only can strengthen the bonding force between the aggregate and the geopolymer matrix, but also can further improve the contact surface between the aggregate and the geopolymer matrix, so that the bonding property of the concrete is improved.
本发明公开了一种高粘结性能地聚物再生混凝土及其制备方法，属于混凝土制备技术领域；再生混凝土包括如下百分比的原料：矿渣粉15％‑20％、粉煤灰15％‑20％、硅酸钾5％‑10％、氢氧化钠1％‑5％、细骨料10％‑15％、粗骨料20％‑25％、纳米SiO20.5％‑1％、钢纤维1％‑3％、微生物溶液0.5％‑1.5％、复合溶液1％‑2％、微生物0.5％‑1.25％、余量为水；本发明利用微生物及其生成的溶液来填补混凝土内部的微小空隙，这样就能降低孔隙率并增强其密实性。此外，微生物还能加速碳酸钙的沉积过程，而在这个过程中，碳酸钙具有高度的化学反应能力，能与骨料发生化学反应，生成化学键合。这种化学键合不仅能强化骨料与地聚物基体之间的连结力，还可以进一步提升骨料与地聚物基体之间的接触面，从而提升了混凝土的粘结性能。
High-adhesive-property geopolymer recycled concrete and preparation method thereof
The invention discloses geopolymer recycled concrete with high adhesive property and a preparation method thereof, and belongs to the technical field of concrete preparation. The recycled concrete comprises the following raw materials in percentage: 15%-20% of slag powder, 15%-20% of fly ash, 5%-10% of potassium silicate, 1%-5% of sodium hydroxide, 10%-15% of fine aggregate, 20%-25% of coarse aggregate, 0.5%-1% of nano SiO2, 1%-3% of steel fiber, 0.5%-1.5% of a microbial solution, 1%-2% of a composite solution, 0.5%-1.25% of microorganisms and the balance of water. Microorganisms and a solution generated by the microorganisms are used for filling tiny gaps in the concrete, so that the porosity can be reduced, and the compactness of the concrete can be enhanced. In addition, the microorganisms can accelerate the deposition process of calcium carbonate, and in the process, calcium carbonate has high chemical reaction capacity and can chemically react with aggregate to generate chemical bonds. The chemical bonding not only can strengthen the bonding force between the aggregate and the geopolymer matrix, but also can further improve the contact surface between the aggregate and the geopolymer matrix, so that the bonding property of the concrete is improved.
本发明公开了一种高粘结性能地聚物再生混凝土及其制备方法，属于混凝土制备技术领域；再生混凝土包括如下百分比的原料：矿渣粉15％‑20％、粉煤灰15％‑20％、硅酸钾5％‑10％、氢氧化钠1％‑5％、细骨料10％‑15％、粗骨料20％‑25％、纳米SiO20.5％‑1％、钢纤维1％‑3％、微生物溶液0.5％‑1.5％、复合溶液1％‑2％、微生物0.5％‑1.25％、余量为水；本发明利用微生物及其生成的溶液来填补混凝土内部的微小空隙，这样就能降低孔隙率并增强其密实性。此外，微生物还能加速碳酸钙的沉积过程，而在这个过程中，碳酸钙具有高度的化学反应能力，能与骨料发生化学反应，生成化学键合。这种化学键合不仅能强化骨料与地聚物基体之间的连结力，还可以进一步提升骨料与地聚物基体之间的接触面，从而提升了混凝土的粘结性能。
High-adhesive-property geopolymer recycled concrete and preparation method thereof
一种高粘结性能地聚物再生混凝土及其制备方法
ZHANG PENG (author) / LU YAN (author) / GUO JINJUN (author) / JUNG WON HOON (author) / GAO ZHEN (author) / SUN XIAOYAO (author) / ZHENG MENGYUAN (author) / XIE PEIHENG (author) / WANG XINYI (author)
2024-09-27
Patent
Electronic Resource
Chinese
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