Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
A micro-expansive concrete formula comprises, by mass, gravels, aluminum sulfate, a cementing material, natural river sand, steel-like fibers, a water reducing agent and water. The cementing materialcomprises cement, a polycarboxylate superplasticizer, fly ash, slag powder and an expanding agent. A micro-expansive concrete production process comprises the following steps: A1, adding gravels, a cementing material and natural river sand into a stirrer, and uniformly stirring for 35-40 seconds; A2, scattering steel-like fibers into the stirrer, and stirring the cementing material, the natural river sand and the steel-like fibers for 35-40 seconds; and A3, fusing a water reducing agent and water to form a mixed solution, sequentially adding the natural river sand, the mixed solution and the gravels into the stirrer, and jointly stirring the aluminum sulfate, the polycarboxylate superplasticizer, the cementing material, the steel-like fibers, the mixed solution and the gravels for 5-6 minutes to obtain a concrete mixture. According to the invention, the reinforced concrete is more compact, the generation of structural cracks is reduced, and the durability of concrete is improved.
一种微膨胀混凝土配方,按质量份计，包括碎石、硫酸铝、胶凝材料、份天然河砂、仿钢纤维、减水剂和水；胶凝材料包括水泥、聚羧酸减水剂、粉煤灰、矿渣粉和膨胀剂。一种微膨胀混凝土生产工艺,包括以下步骤：A1：将碎石、胶凝材料和天然河砂加入搅拌机，均匀搅拌35～40s；A2：向搅拌机中撒入仿钢纤维，将胶凝材料、天然河砂和仿钢纤维共同搅拌35～40s；A3：将减水剂与水融合形成混合液；依次将天然河砂、混合液和碎石加入搅拌机，将硫酸铝、聚羧酸减水剂、胶凝材料、仿钢纤维、混合液和碎石共同搅拌5～6min，得到混凝土拌和物。本发明使钢筋混凝土更加致密，降低结构裂缝的产生。提高混凝土的耐久性。
A micro-expansive concrete formula comprises, by mass, gravels, aluminum sulfate, a cementing material, natural river sand, steel-like fibers, a water reducing agent and water. The cementing materialcomprises cement, a polycarboxylate superplasticizer, fly ash, slag powder and an expanding agent. A micro-expansive concrete production process comprises the following steps: A1, adding gravels, a cementing material and natural river sand into a stirrer, and uniformly stirring for 35-40 seconds; A2, scattering steel-like fibers into the stirrer, and stirring the cementing material, the natural river sand and the steel-like fibers for 35-40 seconds; and A3, fusing a water reducing agent and water to form a mixed solution, sequentially adding the natural river sand, the mixed solution and the gravels into the stirrer, and jointly stirring the aluminum sulfate, the polycarboxylate superplasticizer, the cementing material, the steel-like fibers, the mixed solution and the gravels for 5-6 minutes to obtain a concrete mixture. According to the invention, the reinforced concrete is more compact, the generation of structural cracks is reduced, and the durability of concrete is improved.
一种微膨胀混凝土配方,按质量份计，包括碎石、硫酸铝、胶凝材料、份天然河砂、仿钢纤维、减水剂和水；胶凝材料包括水泥、聚羧酸减水剂、粉煤灰、矿渣粉和膨胀剂。一种微膨胀混凝土生产工艺,包括以下步骤：A1：将碎石、胶凝材料和天然河砂加入搅拌机，均匀搅拌35～40s；A2：向搅拌机中撒入仿钢纤维，将胶凝材料、天然河砂和仿钢纤维共同搅拌35～40s；A3：将减水剂与水融合形成混合液；依次将天然河砂、混合液和碎石加入搅拌机，将硫酸铝、聚羧酸减水剂、胶凝材料、仿钢纤维、混合液和碎石共同搅拌5～6min，得到混凝土拌和物。本发明使钢筋混凝土更加致密，降低结构裂缝的产生。提高混凝土的耐久性。
Micro-expansive concrete and production process thereof
| Europäisches Patentamt | 2024
Production formula and production process of high-performance concrete expansive agent
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