Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
The invention discloses impermeable recycled concrete. The concrete is prepared from cement, coarse aggregate, natural fine aggregate, modified recycled coarse aggregate, coal ash, a water reducing agent, gypsum, bauxite, calcium oxide, sepiolite powder, urease, silica powder and water. The preparation method of the concrete comprises the following steps of: crushing waste concrete, and screeningthe crushed waste concrete to obtain prefabricated recycled coarse aggregate with the particle size being 5-25mm; soaking the prefabricated recycled coarse aggregate in an acidic impregnation liquid for 2-3 hours, wherein the weight ratio of the prefabricated recycled coarse aggregate to the acidic impregnation liquid is 1: 2; immersing the prefabricated recycled coarse aggregate in water for 10-20 seconds, taking out the prefabricated recycled coarse aggregate, draining for 4-5 hours, and baking the prefabricated recycled coarse aggregate at the temperature of 80-90 DEG C for 1-2 hours to obtain recycled coarse aggregate; and uniformly stirring raw materials in parts by weight to obtain the impermeable recycled concrete. Reutilization of resources is achieved, pores of the concrete can bereduced, the compactness of the concrete is improved, the impermeability of the concrete is improved, and the service life of the concrete is prolonged.
本发明公开了一种抗渗再生混凝土，包括：水泥、粗骨料、天然细骨料、改性再生粗骨料、粉煤灰、减水剂、石膏、铝矾土、氧化钙、海泡石粉、脲酶、硅微粉、水，其制备方法，包括以下步骤：对废弃混凝土进行破碎，筛选后得到粒径为5～25mm的预制再生粗骨料；将预制再生粗骨料置于酸性浸渍液中浸泡2～3h，预制再生粗骨料与酸性浸渍液的重量比为1:2；然后将预制再生粗骨料浸入水中10～20s，取出沥干4～5h，然后将其置于80～90℃的温度下烘烤1～2h，得到再生粗骨料；以重量份数计，将原料搅拌均匀，得到抗渗再生混凝土。本发明实现资源的再利用，可以减少混凝土的孔隙，提高混凝土的致密性，改善混凝土的抗渗性能，提高混凝土的使用寿命。
The invention discloses impermeable recycled concrete. The concrete is prepared from cement, coarse aggregate, natural fine aggregate, modified recycled coarse aggregate, coal ash, a water reducing agent, gypsum, bauxite, calcium oxide, sepiolite powder, urease, silica powder and water. The preparation method of the concrete comprises the following steps of: crushing waste concrete, and screeningthe crushed waste concrete to obtain prefabricated recycled coarse aggregate with the particle size being 5-25mm; soaking the prefabricated recycled coarse aggregate in an acidic impregnation liquid for 2-3 hours, wherein the weight ratio of the prefabricated recycled coarse aggregate to the acidic impregnation liquid is 1: 2; immersing the prefabricated recycled coarse aggregate in water for 10-20 seconds, taking out the prefabricated recycled coarse aggregate, draining for 4-5 hours, and baking the prefabricated recycled coarse aggregate at the temperature of 80-90 DEG C for 1-2 hours to obtain recycled coarse aggregate; and uniformly stirring raw materials in parts by weight to obtain the impermeable recycled concrete. Reutilization of resources is achieved, pores of the concrete can bereduced, the compactness of the concrete is improved, the impermeability of the concrete is improved, and the service life of the concrete is prolonged.
本发明公开了一种抗渗再生混凝土，包括：水泥、粗骨料、天然细骨料、改性再生粗骨料、粉煤灰、减水剂、石膏、铝矾土、氧化钙、海泡石粉、脲酶、硅微粉、水，其制备方法，包括以下步骤：对废弃混凝土进行破碎，筛选后得到粒径为5～25mm的预制再生粗骨料；将预制再生粗骨料置于酸性浸渍液中浸泡2～3h，预制再生粗骨料与酸性浸渍液的重量比为1:2；然后将预制再生粗骨料浸入水中10～20s，取出沥干4～5h，然后将其置于80～90℃的温度下烘烤1～2h，得到再生粗骨料；以重量份数计，将原料搅拌均匀，得到抗渗再生混凝土。本发明实现资源的再利用，可以减少混凝土的孔隙，提高混凝土的致密性，改善混凝土的抗渗性能，提高混凝土的使用寿命。
Impermeable recycled concrete and preparation method thereof
| Europäisches Patentamt | 2022
Impermeable recycled concrete and preparation method thereof
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Impermeable recycled concrete and preparation method thereof
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Impermeable recycled concrete and preparation method thereof
| Europäisches Patentamt | 2024