A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
The invention relates to the technical field of concrete, and discloses high-performance underwater non-dispersible concrete, which is prepared from the following components in parts by mass: 300 to 700 parts of fine aggregate, 500 to 1000 parts of coarse aggregate, 150 to 300 parts of cement, 5 to 10 parts of admixture, 70 to 140 parts of admixture, 80 to 240 parts of mixing water and 0.5 to 10 parts of flocculating agent, the mass of the flocculating agent is 0.5%-3.5% of the mass of the cement. According to the invention, potato starch, acrylic acid, sodium acrylate and N-hydroxymethyl acrylamide are copolymerized under a certain reaction condition to form a starch grafted copolymer, so that the cationic polyacrylamide flocculant has the properties of natural and synthetic macromolecules; therefore, the concrete has extremely strong water absorption capacity and flocculation capacity, and can adsorb water which is hundreds of times of the weight of the concrete in a very short time, so that the concrete flocculation efficiency is improved, the underwater dispersity of the concrete is reduced, and the large underwater loss and environmental pollution of the concrete are reduced.
本发明涉及混凝土技术领域，且公开了一种高性能水下不分散混凝土，包括细集料300‑700质量份、粗集料500‑1000质量份、水泥150‑300质量份、外加剂5‑10质量份、掺合料70‑140质量份、拌合水80‑240质量份和0.5‑10质量份的絮凝剂，其中掺和料由粉煤灰和矿渣粉构成，所述絮凝剂的质量为水泥的质量的0.5％‑3.5％。本发明通过设计由土豆淀粉与丙烯酸、丙烯酸钠及N‑羟甲基丙烯酰胺在一定反应条件下，共聚而成淀粉接枝共聚物，使其阳离子聚丙烯酰胺絮凝剂具有天然与合成两种高分子的性质，因而具备极强的吸水能力和絮凝能力、可在很短时间内吸附自身重量数百倍的水分，从而提高混凝土的絮凝效率，降低混凝土在水下的分散性，降低混凝土水下损失量大，污染环境的优点。
The invention relates to the technical field of concrete, and discloses high-performance underwater non-dispersible concrete, which is prepared from the following components in parts by mass: 300 to 700 parts of fine aggregate, 500 to 1000 parts of coarse aggregate, 150 to 300 parts of cement, 5 to 10 parts of admixture, 70 to 140 parts of admixture, 80 to 240 parts of mixing water and 0.5 to 10 parts of flocculating agent, the mass of the flocculating agent is 0.5%-3.5% of the mass of the cement. According to the invention, potato starch, acrylic acid, sodium acrylate and N-hydroxymethyl acrylamide are copolymerized under a certain reaction condition to form a starch grafted copolymer, so that the cationic polyacrylamide flocculant has the properties of natural and synthetic macromolecules; therefore, the concrete has extremely strong water absorption capacity and flocculation capacity, and can adsorb water which is hundreds of times of the weight of the concrete in a very short time, so that the concrete flocculation efficiency is improved, the underwater dispersity of the concrete is reduced, and the large underwater loss and environmental pollution of the concrete are reduced.
本发明涉及混凝土技术领域，且公开了一种高性能水下不分散混凝土，包括细集料300‑700质量份、粗集料500‑1000质量份、水泥150‑300质量份、外加剂5‑10质量份、掺合料70‑140质量份、拌合水80‑240质量份和0.5‑10质量份的絮凝剂，其中掺和料由粉煤灰和矿渣粉构成，所述絮凝剂的质量为水泥的质量的0.5％‑3.5％。本发明通过设计由土豆淀粉与丙烯酸、丙烯酸钠及N‑羟甲基丙烯酰胺在一定反应条件下，共聚而成淀粉接枝共聚物，使其阳离子聚丙烯酰胺絮凝剂具有天然与合成两种高分子的性质，因而具备极强的吸水能力和絮凝能力、可在很短时间内吸附自身重量数百倍的水分，从而提高混凝土的絮凝效率，降低混凝土在水下的分散性，降低混凝土水下损失量大，污染环境的优点。
High-performance underwater non-dispersible concrete
一种高性能水下不分散混凝土
WU RUNBIN (author)
2023-09-29
Patent
Electronic Resource
Chinese
Non-Dispersible Underwater Concrete
| Springer Verlag | 2017
| European Patent Office | 2023
| European Patent Office | 2016