Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Slow-release early-strength polycarboxylate superplasticizer and preparation method thereof
The invention discloses a slow-release early-strength polycarboxylate superplasticizer and a preparation method thereof, and belongs to the technical field of cement admixtures. The water reducing agent is prepared from the following raw materials in parts by weight: 610 to 702 parts of a base material, 66 to 93 parts of a mixed material A, 62 to 113 parts of a mixed material B, 62 to 63.2 parts of a mixed material C and 6 to 10 parts of a neutralizing material. According to the invention, the slow-release early-strength polycarboxylic acid water reducer is prepared in a low-temperature water phase by utilizing the synergistic effect between unsaturated acid ester and unsaturated amide and the characteristic that different functional groups endow water reducer molecules with different functions and adopting a simple and easy-to-operate one-step process. The water reducing agent prepared by the method can improve the dispersity and the later-stage retention capacity of cement paste, effectively improves the discharge state of a concrete mixture and improves the early strength of concrete.
本发明公开一种缓释早强型聚羧酸减水剂及其制备方法，属于水泥外加剂技术领域。本发明减水剂包括以下重量份的原料制备而成：底料610‑702份，混合A料66‑93份，混合B料62‑113份，混合C料62‑63.2份和中和料6‑10份。本发明利用不饱和酸酯与不饱和酰胺之间的协同作用，不同官能团所赋予减水剂分子不同的功能性的特点，采用简单易操作的一步法工艺，在低温水相中制备了缓释早强型聚羧酸减水剂。本方法制备的减水剂可提高水泥浆的分散性及后期保持能力，同时有效地改善了混凝土拌合物出机状态，提高了混凝土早期强度。
Slow-release early-strength polycarboxylate superplasticizer and preparation method thereof
The invention discloses a slow-release early-strength polycarboxylate superplasticizer and a preparation method thereof, and belongs to the technical field of cement admixtures. The water reducing agent is prepared from the following raw materials in parts by weight: 610 to 702 parts of a base material, 66 to 93 parts of a mixed material A, 62 to 113 parts of a mixed material B, 62 to 63.2 parts of a mixed material C and 6 to 10 parts of a neutralizing material. According to the invention, the slow-release early-strength polycarboxylic acid water reducer is prepared in a low-temperature water phase by utilizing the synergistic effect between unsaturated acid ester and unsaturated amide and the characteristic that different functional groups endow water reducer molecules with different functions and adopting a simple and easy-to-operate one-step process. The water reducing agent prepared by the method can improve the dispersity and the later-stage retention capacity of cement paste, effectively improves the discharge state of a concrete mixture and improves the early strength of concrete.
本发明公开一种缓释早强型聚羧酸减水剂及其制备方法，属于水泥外加剂技术领域。本发明减水剂包括以下重量份的原料制备而成：底料610‑702份，混合A料66‑93份，混合B料62‑113份，混合C料62‑63.2份和中和料6‑10份。本发明利用不饱和酸酯与不饱和酰胺之间的协同作用，不同官能团所赋予减水剂分子不同的功能性的特点，采用简单易操作的一步法工艺，在低温水相中制备了缓释早强型聚羧酸减水剂。本方法制备的减水剂可提高水泥浆的分散性及后期保持能力，同时有效地改善了混凝土拌合物出机状态，提高了混凝土早期强度。
Slow-release early-strength polycarboxylate superplasticizer and preparation method thereof
一种缓释早强型聚羧酸减水剂及其制备方法
ZHU DESHUAI (Autor:in) / LU JIANG (Autor:in) / ZHANG HUI (Autor:in) / ZHAO WEI (Autor:in) / QIN YOUMIN (Autor:in) / LI YAO (Autor:in) / WANG SHENGHUI (Autor:in) / FENG ENJUAN (Autor:in)
07.03.2023
Patent
Elektronische Ressource
Chinesisch
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