Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Concrete containing modified cassava starch-polycarboxylic acid composite water reducing agent
The invention discloses concrete containing a modified cassava starch-polycarboxylic acid composite water reducing agent, and belongs to the field of building materials. The concrete containing the modified cassava starch-polycarboxylic acid composite water reducing agent is prepared from the following raw materials in parts by weight: 30 to 65 parts of general purpose Portland cement, 60 to 130 parts of sand, 105 to 227.5 parts of stone, 12 to 40 parts of fly ash, 5 to 9 parts of sodium carboxymethyl cellulose, 0.5 to 1 part of modified cassava starch-polycarboxylate superplasticizer and 0.1to 1 part of ferrous sulfate. The composite water reducing agent is prepared through the reaction processes of oxidation, acidification, etherification, grafting, neutralization and the like. The concrete product of the invention is smooth in appearance and good in durability, sand holes and air holes are not formed in the surface of the concrete product, and high compressive strength is achieved;when the mixing amount of the composite water reducing agent is 0.3%, the coagulation time is longer than 24 hours, and the requirements of the super retarder are met.
本发明公开了一种含改性木薯淀粉‑聚羧酸复合减水剂的混泥土，属于建筑材料领域。所述含改性木薯淀粉‑聚羧酸复合减水剂的混泥土，以重量份为单位包括以下原料：通用硅酸盐水泥30‑65份、砂60‑130份、石子105‑227.5份、粉煤灰12‑40份、羧甲基纤维素钠5‑9份、改性木薯淀粉‑聚羧酸减水剂0.5‑1份、硫酸亚铁0.1‑1份。所述复合减水剂经过氧化、酸化、醚化、接枝、中和等反应工序制成的。本发明的混泥土制品外观平整，耐久性好，表面没有砂眼和气孔，具有较高的抗压强度。其中，当复合减水剂掺量为0.3％时，凝结时间已超过24h，达到超缓凝剂的要求。
Concrete containing modified cassava starch-polycarboxylic acid composite water reducing agent
The invention discloses concrete containing a modified cassava starch-polycarboxylic acid composite water reducing agent, and belongs to the field of building materials. The concrete containing the modified cassava starch-polycarboxylic acid composite water reducing agent is prepared from the following raw materials in parts by weight: 30 to 65 parts of general purpose Portland cement, 60 to 130 parts of sand, 105 to 227.5 parts of stone, 12 to 40 parts of fly ash, 5 to 9 parts of sodium carboxymethyl cellulose, 0.5 to 1 part of modified cassava starch-polycarboxylate superplasticizer and 0.1to 1 part of ferrous sulfate. The composite water reducing agent is prepared through the reaction processes of oxidation, acidification, etherification, grafting, neutralization and the like. The concrete product of the invention is smooth in appearance and good in durability, sand holes and air holes are not formed in the surface of the concrete product, and high compressive strength is achieved;when the mixing amount of the composite water reducing agent is 0.3%, the coagulation time is longer than 24 hours, and the requirements of the super retarder are met.
本发明公开了一种含改性木薯淀粉‑聚羧酸复合减水剂的混泥土，属于建筑材料领域。所述含改性木薯淀粉‑聚羧酸复合减水剂的混泥土，以重量份为单位包括以下原料：通用硅酸盐水泥30‑65份、砂60‑130份、石子105‑227.5份、粉煤灰12‑40份、羧甲基纤维素钠5‑9份、改性木薯淀粉‑聚羧酸减水剂0.5‑1份、硫酸亚铁0.1‑1份。所述复合减水剂经过氧化、酸化、醚化、接枝、中和等反应工序制成的。本发明的混泥土制品外观平整，耐久性好，表面没有砂眼和气孔，具有较高的抗压强度。其中，当复合减水剂掺量为0.3％时，凝结时间已超过24h，达到超缓凝剂的要求。
Concrete containing modified cassava starch-polycarboxylic acid composite water reducing agent
含改性木薯淀粉-聚羧酸复合减水剂的混泥土
WEI HONGYAN (Autor:in) / CHEN XULAN (Autor:in) / QUE LIMIN (Autor:in)
07.07.2020
Patent
Elektronische Ressource
Chinesisch
Modified cassava starch-polycarboxylic acid composite water reducing agent
| Europäisches Patentamt | 2020
| Europäisches Patentamt | 2020
Preparation process of modified cassava starch-polycarboxylic acid composite water reducing agent
| Europäisches Patentamt | 2020
| Europäisches Patentamt | 2020
| Europäisches Patentamt | 2020