Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Polycarboxylate superplasticizer and concrete prepared from same
The invention belongs to the technical field of building materials, and particularly relates to a water reducing agent for concrete and concrete prepared from the water reducing agent. The water reducing agent is obtained by copolymerizing isopentenol polyoxyethylene ether, methacrylic acid and 1-methyl-3-(4-vinyl benzyl) imidazole tetrafluoroborate, and the molar ratio of the isopentenol polyoxyethylene ether to the methacrylic acid to the 1-methyl-3-(4-vinyl benzyl) imidazole tetrafluoroborate is (2: 1)-(3: 1). Imidazole cations and tetrafluoroborate anions are introduced into the molecular structure of the water reducing agent, and the introduction of the cations and the anions improves the dispersion performance of a polymer, particularly reduces the interaction force between the water reducing agent and soil, improves the flowing property and the water reducing rate, and further improves the anti-mud effect of the water reducing agent. The concrete mainly comprises the following components in parts by weight: 100 parts of Portland cement, 8-16 parts of regenerated plastic, 120-210 parts of stones, 50-80 parts of fly ash, 7-18 parts of filling fibers, 6-4 parts of a silane coupling agent, 1-3 parts of a water reducing agent and 20-34 parts of water.
本发明属于建筑材料技术领域，具体涉及一种混凝土用减水剂及其制备的混凝土。所述减水剂为异戊烯醇聚氧乙烯醚、甲基丙烯酸、1‑甲基‑3‑（4‑乙烯基苄基）咪唑四氟硼酸盐共聚得到，所述三种单体的摩尔比为异戊烯醇聚氧乙烯醚∶甲基丙烯酸∶1‑甲基‑3‑（4‑乙烯基苄基）咪唑四氟硼酸盐=2∶1‑3∶1。在减水剂分子结构引入了咪唑阳离子和四氟硼酸根阴离子，该阴阳离子的引入提高了聚合物分散性能，特别是降低了减水剂与泥土的相互作用力，提高了流动性能和减水率，进而提高其抗泥效果。所述混凝土主要包括如下重量份数的组成：硅酸盐水泥100份、再生塑料8‑16份、石子120‑210份、粉煤灰50‑80份、填充纤维7‑18份、硅烷偶联剂6‑4份、减水剂1‑3份、水20‑34份。
Polycarboxylate superplasticizer and concrete prepared from same
The invention belongs to the technical field of building materials, and particularly relates to a water reducing agent for concrete and concrete prepared from the water reducing agent. The water reducing agent is obtained by copolymerizing isopentenol polyoxyethylene ether, methacrylic acid and 1-methyl-3-(4-vinyl benzyl) imidazole tetrafluoroborate, and the molar ratio of the isopentenol polyoxyethylene ether to the methacrylic acid to the 1-methyl-3-(4-vinyl benzyl) imidazole tetrafluoroborate is (2: 1)-(3: 1). Imidazole cations and tetrafluoroborate anions are introduced into the molecular structure of the water reducing agent, and the introduction of the cations and the anions improves the dispersion performance of a polymer, particularly reduces the interaction force between the water reducing agent and soil, improves the flowing property and the water reducing rate, and further improves the anti-mud effect of the water reducing agent. The concrete mainly comprises the following components in parts by weight: 100 parts of Portland cement, 8-16 parts of regenerated plastic, 120-210 parts of stones, 50-80 parts of fly ash, 7-18 parts of filling fibers, 6-4 parts of a silane coupling agent, 1-3 parts of a water reducing agent and 20-34 parts of water.
本发明属于建筑材料技术领域，具体涉及一种混凝土用减水剂及其制备的混凝土。所述减水剂为异戊烯醇聚氧乙烯醚、甲基丙烯酸、1‑甲基‑3‑（4‑乙烯基苄基）咪唑四氟硼酸盐共聚得到，所述三种单体的摩尔比为异戊烯醇聚氧乙烯醚∶甲基丙烯酸∶1‑甲基‑3‑（4‑乙烯基苄基）咪唑四氟硼酸盐=2∶1‑3∶1。在减水剂分子结构引入了咪唑阳离子和四氟硼酸根阴离子，该阴阳离子的引入提高了聚合物分散性能，特别是降低了减水剂与泥土的相互作用力，提高了流动性能和减水率，进而提高其抗泥效果。所述混凝土主要包括如下重量份数的组成：硅酸盐水泥100份、再生塑料8‑16份、石子120‑210份、粉煤灰50‑80份、填充纤维7‑18份、硅烷偶联剂6‑4份、减水剂1‑3份、水20‑34份。
Polycarboxylate superplasticizer and concrete prepared from same
一种聚羧酸减水剂及其制备的混凝土
04.06.2021
Patent
Elektronische Ressource
Chinesisch
| Europäisches Patentamt | 2023
| Europäisches Patentamt | 2023
| Europäisches Patentamt | 2023