A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Hydration heat regulation and control functional material, hydration heat regulation and control type polycarboxylate superplasticizer and preparation methods thereof
The invention relates to the technical field of building admixtures, and provides a hydration heat regulation and control functional material, a hydration heat regulation and control type polycarboxylate superplasticizer and preparation methods thereof. The adopted hydration heat regulation and control functional material comprises an esterification product and a composite nano-material. The esterification product is a product obtained after maleic anhydride and dextrin are subjected to an esterification reaction. The composite nano-material contains Ca element, Si element and O element, and the addition amount of the composite nano-material is 1/5-1/3 of that of the esterification product. The superplasticizer provided by the invention can hinder the hydration process of cement and effectively reduce the hydration heat of concrete. The problems that the early strength of concrete is reduced and the setting time is prolonged after hydration heat is reduced can be solved, the temperature rise of large-volume engineering concrete can be effectively controlled, cracking is prevented, the early strength and the setting time of the concrete are not influenced, and the service life of the concrete is prolonged.
本发明涉及建筑外加剂技术领域，提供一种水化热调控功能材料、水化热调控型聚羧酸减水剂及其制备方法，其中采用的水化热调控功能材料包括酯化产物和复合纳米材料，酯化产物为马来酸酐和糊精酯化反应后的产物，复合纳米材料中含有Ca元素,Si元素和O元素，且复合纳米材料的加入量为酯化产物的1/5～1/3。本发明提供的减水剂，阻碍水泥水化进程，有效降低混凝土水化热；可克服水化热降低后混凝土早期强度降低和凝结时间延长的问题，并可有效控制大体积工程混凝土温升，防止开裂，又对混凝土早期强度及凝结时间无影响，延长其服役寿命。
Hydration heat regulation and control functional material, hydration heat regulation and control type polycarboxylate superplasticizer and preparation methods thereof
The invention relates to the technical field of building admixtures, and provides a hydration heat regulation and control functional material, a hydration heat regulation and control type polycarboxylate superplasticizer and preparation methods thereof. The adopted hydration heat regulation and control functional material comprises an esterification product and a composite nano-material. The esterification product is a product obtained after maleic anhydride and dextrin are subjected to an esterification reaction. The composite nano-material contains Ca element, Si element and O element, and the addition amount of the composite nano-material is 1/5-1/3 of that of the esterification product. The superplasticizer provided by the invention can hinder the hydration process of cement and effectively reduce the hydration heat of concrete. The problems that the early strength of concrete is reduced and the setting time is prolonged after hydration heat is reduced can be solved, the temperature rise of large-volume engineering concrete can be effectively controlled, cracking is prevented, the early strength and the setting time of the concrete are not influenced, and the service life of the concrete is prolonged.
本发明涉及建筑外加剂技术领域，提供一种水化热调控功能材料、水化热调控型聚羧酸减水剂及其制备方法，其中采用的水化热调控功能材料包括酯化产物和复合纳米材料，酯化产物为马来酸酐和糊精酯化反应后的产物，复合纳米材料中含有Ca元素,Si元素和O元素，且复合纳米材料的加入量为酯化产物的1/5～1/3。本发明提供的减水剂，阻碍水泥水化进程，有效降低混凝土水化热；可克服水化热降低后混凝土早期强度降低和凝结时间延长的问题，并可有效控制大体积工程混凝土温升，防止开裂，又对混凝土早期强度及凝结时间无影响，延长其服役寿命。
Hydration heat regulation and control functional material, hydration heat regulation and control type polycarboxylate superplasticizer and preparation methods thereof
一种水化热调控功能材料、水化热调控型聚羧酸减水剂及其制备方法
LIN YANMEI (author) / FANG YUNHUI (author) / ZHU SHAOHONG (author) / GUAN MENGQIN (author) / LIN XIAOCHEN (author) / YAO WENJIE (author) / AN XIAOQIANG (author)
2021-11-30
Patent
Electronic Resource
Chinese
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