Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Anti-cracking high-water-retention wet-mixed mortar admixture and preparation method thereof
The invention discloses an anti-cracking high-water-retention wet-mixed mortar admixture and a preparation method thereof. The anti-cracking high-water-retention wet-mixed mortar admixture comprises a high-dispersity polycarboxylic acid admixture, a polycarboxylic acid water-retaining agent, a sodium gluconate retarder, a soluble glue thickener,an air entraining agent and tap water, wherein the proportion of the high-dispersity polycarboxylic acid admixture is set to be 5-10 parts, and the proportion of the polycarboxylic acid water-retaining agent is set to be 5 to 10 parts. According to the characteristic that the molecular structure can be pre-designed during polymerization of the polycarboxylic acid polymer, the molecular structure and the molecular weight of the target product are set by adjusting the polymerization process, so that the anti-cracking and high-water-retention wet-mixed mortar admixture is obtained, the problems that traditional wet-mixed mortar is prone to bleeding, large in dry shrinkage, prone to cracking, poor in water-retaining property, low in compressive strength and breaking strength and the like are well solved, the workability and strength requirements of the wet-mixed mortar are met, and the wet-mixed mortar admixture becomes a functional admixture with adjustable consistency and opening time and particularly high water-retaining capacity.
本发明公开了一种抗开裂高保水性湿拌砂浆外加剂及制备方法，包括高分散性聚羧酸外加剂、聚羧酸类保水剂、葡萄糖酸钠缓凝剂、可溶性胶增稠剂、引气剂以及自来水，其中高分散性聚羧酸外加剂的占比设为5份‑10份，所述聚羧酸类保水剂的占比设为5份‑10份。本发明通过根据聚羧酸聚合物聚合时可通过预设计分子结构的特点，调整聚合工艺设定目标产物的分子结构和分子量获得一种抗开裂、高保水性湿拌砂浆外加剂，较好的解决了传统湿拌砂浆存在的易泌水、干缩大、易开裂、保水性差、抗压抗折强度低等缺陷的问题，保证了湿拌砂浆的工作性和强度要求，使其成为一种稠度、开放时间可调、保水能力特别强的功能型外加剂。
Anti-cracking high-water-retention wet-mixed mortar admixture and preparation method thereof
The invention discloses an anti-cracking high-water-retention wet-mixed mortar admixture and a preparation method thereof. The anti-cracking high-water-retention wet-mixed mortar admixture comprises a high-dispersity polycarboxylic acid admixture, a polycarboxylic acid water-retaining agent, a sodium gluconate retarder, a soluble glue thickener,an air entraining agent and tap water, wherein the proportion of the high-dispersity polycarboxylic acid admixture is set to be 5-10 parts, and the proportion of the polycarboxylic acid water-retaining agent is set to be 5 to 10 parts. According to the characteristic that the molecular structure can be pre-designed during polymerization of the polycarboxylic acid polymer, the molecular structure and the molecular weight of the target product are set by adjusting the polymerization process, so that the anti-cracking and high-water-retention wet-mixed mortar admixture is obtained, the problems that traditional wet-mixed mortar is prone to bleeding, large in dry shrinkage, prone to cracking, poor in water-retaining property, low in compressive strength and breaking strength and the like are well solved, the workability and strength requirements of the wet-mixed mortar are met, and the wet-mixed mortar admixture becomes a functional admixture with adjustable consistency and opening time and particularly high water-retaining capacity.
本发明公开了一种抗开裂高保水性湿拌砂浆外加剂及制备方法，包括高分散性聚羧酸外加剂、聚羧酸类保水剂、葡萄糖酸钠缓凝剂、可溶性胶增稠剂、引气剂以及自来水，其中高分散性聚羧酸外加剂的占比设为5份‑10份，所述聚羧酸类保水剂的占比设为5份‑10份。本发明通过根据聚羧酸聚合物聚合时可通过预设计分子结构的特点，调整聚合工艺设定目标产物的分子结构和分子量获得一种抗开裂、高保水性湿拌砂浆外加剂，较好的解决了传统湿拌砂浆存在的易泌水、干缩大、易开裂、保水性差、抗压抗折强度低等缺陷的问题，保证了湿拌砂浆的工作性和强度要求，使其成为一种稠度、开放时间可调、保水能力特别强的功能型外加剂。
Anti-cracking high-water-retention wet-mixed mortar admixture and preparation method thereof
一种抗开裂高保水性湿拌砂浆外加剂及制备方法
WANG HAITAO (Autor:in) / XU JINFU (Autor:in) / JIA LEI (Autor:in) / HONG QIANG (Autor:in) / LIU ZIXIANG (Autor:in)
02.07.2021
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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