Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Reproducible self-healing inorganic internal admixture for concrete and preparation method thereof
The invention discloses a reproductive self-healing inorganic internal admixture for concrete and a preparation method thereof, and the inorganic internal admixture comprises the following components in parts by weight: 50-70 parts of zeolite powder, 4-8 parts of a water reducing agent, 10-15 parts of silicate, 15-30 parts of water, 0.1-0.5 part of a reaction retarder, 0.05-0.1 part of a surfactant and 0.05-0.1 part of a reducing agent. The preparation method comprises the following steps: (1) respectively weighing the components; (2) adding silicate into water in a stirring state, and pressurizing to react; (3) sequentially adding a reaction retarder, a surfactant and a reducing agent after reducing the pressure, and stirring to obtain a mixed solution; (4) dropwise adding the mixed solution into zeolite powder, gradually heating, keeping for a period of time, and cooling to normal temperature to form a solid; crushing and screening the solid; and (5) adding a water reducing agent into the screened material, and fully and uniformly stirring to obtain the inorganic internal admixture. The prepared internal admixture can improve the compactness, the strength, the impermeability and the crack self-healing performance of concrete, and the service life of the concrete is prolonged.
本发明公开了一种混凝土用可繁殖自愈型无机内掺剂及其制备方法，其中，无机内掺剂按重量份计，包括沸石粉50‑70份、减水剂4‑8份、硅酸盐10‑15份、水15‑30份、反应迟缓剂0.1‑0.5份、表面活性剂0.05‑0.1份、还原剂0.05‑0.1份。制备方法包括：(1)分别称取各组分；(2)在搅拌状态下将硅酸盐加入到水中，并加压反应；(3)降压后依次加入反应迟缓剂、表面活性剂、还原剂，搅拌后制得混合溶液；(4)将混合溶液以滴加的方式加入到沸石粉中，逐渐升温保持一段时间后冷却至常温形成固体；对固体进行破碎筛选；(5)在筛选后的材料中加入减水剂充分搅拌均匀后制得无机内掺剂。本发明制备的内掺剂能够提高混凝土的密实性、强度、抗渗性及裂缝自愈性能，提升混凝土的使用寿命。
Reproducible self-healing inorganic internal admixture for concrete and preparation method thereof
The invention discloses a reproductive self-healing inorganic internal admixture for concrete and a preparation method thereof, and the inorganic internal admixture comprises the following components in parts by weight: 50-70 parts of zeolite powder, 4-8 parts of a water reducing agent, 10-15 parts of silicate, 15-30 parts of water, 0.1-0.5 part of a reaction retarder, 0.05-0.1 part of a surfactant and 0.05-0.1 part of a reducing agent. The preparation method comprises the following steps: (1) respectively weighing the components; (2) adding silicate into water in a stirring state, and pressurizing to react; (3) sequentially adding a reaction retarder, a surfactant and a reducing agent after reducing the pressure, and stirring to obtain a mixed solution; (4) dropwise adding the mixed solution into zeolite powder, gradually heating, keeping for a period of time, and cooling to normal temperature to form a solid; crushing and screening the solid; and (5) adding a water reducing agent into the screened material, and fully and uniformly stirring to obtain the inorganic internal admixture. The prepared internal admixture can improve the compactness, the strength, the impermeability and the crack self-healing performance of concrete, and the service life of the concrete is prolonged.
本发明公开了一种混凝土用可繁殖自愈型无机内掺剂及其制备方法，其中，无机内掺剂按重量份计，包括沸石粉50‑70份、减水剂4‑8份、硅酸盐10‑15份、水15‑30份、反应迟缓剂0.1‑0.5份、表面活性剂0.05‑0.1份、还原剂0.05‑0.1份。制备方法包括：(1)分别称取各组分；(2)在搅拌状态下将硅酸盐加入到水中，并加压反应；(3)降压后依次加入反应迟缓剂、表面活性剂、还原剂，搅拌后制得混合溶液；(4)将混合溶液以滴加的方式加入到沸石粉中，逐渐升温保持一段时间后冷却至常温形成固体；对固体进行破碎筛选；(5)在筛选后的材料中加入减水剂充分搅拌均匀后制得无机内掺剂。本发明制备的内掺剂能够提高混凝土的密实性、强度、抗渗性及裂缝自愈性能，提升混凝土的使用寿命。
Reproducible self-healing inorganic internal admixture for concrete and preparation method thereof
混凝土用可繁殖自愈型无机内掺剂及其制备方法
YAO GUOYOU (Autor:in) / SHI XIAOCHENG (Autor:in) / YU JINZHU (Autor:in) / JIN XIN (Autor:in)
29.04.2022
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
PROPAGABLE SELF-HEALING INORGANIC ADMIXTURE FOR CONCRETE AND PREPARATION METHOD THEREFOR
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