Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Composition, prefabricated part and preparation method of prefabricated part
The invention relates to a composition, a prefabricated part and application thereof. The composition comprises a cementitious material, a polymer emulsion and/or a redispersible polymer rubber powder, a fine aggregate, and optionally a coarse aggregate; the glass transition temperature of the polymer emulsion and/or the redispersible polymer rubber powder is greater than 20 DEG C. According to the invention, the polymer emulsion with high glass transition temperature is applied to the concrete (mortar) prefabricated part, and the concrete prefabricated part with excellent mechanical properties, impermeability and durability is prepared in a steam curing manner. According to the method, the advantage that the influence of the high-glass-transition-temperature polymer on the compressive strength of the concrete (mortar) is small is brought into play, the breaking strength, the impermeability and the durability of the concrete (mortar) can be greatly improved through polymer film forming, and meanwhile, the common defects of coarse pore diameter and high brittleness of an existing steam-cured component are also overcome.
本发明涉及一种组合物、预制构件及其应用。所述组合物包括胶凝材料、聚合物乳液和/或可再分散聚合物胶粉、细骨料以及任选的粗骨料，所述聚合物乳液和/或可再分散聚合物胶粉的玻璃化转变温度大于20℃。本发明通过将高玻璃化温度的聚合物乳液应用于混凝土(砂浆)预制构件中，通过蒸养的方式制得力学性能、抗渗性、耐久性优异的混凝土预制构件。该方法既发挥了高玻璃化转变温度聚合物对混凝土(砂浆)抗压强度影响小的优势，又能通过聚合物成膜极大提高混凝土(砂浆)的抗折强度、抗渗性能和耐久性，同时也克服了目前蒸养构件普遍存在的孔径粗糙、脆性大的缺点。
Composition, prefabricated part and preparation method of prefabricated part
The invention relates to a composition, a prefabricated part and application thereof. The composition comprises a cementitious material, a polymer emulsion and/or a redispersible polymer rubber powder, a fine aggregate, and optionally a coarse aggregate; the glass transition temperature of the polymer emulsion and/or the redispersible polymer rubber powder is greater than 20 DEG C. According to the invention, the polymer emulsion with high glass transition temperature is applied to the concrete (mortar) prefabricated part, and the concrete prefabricated part with excellent mechanical properties, impermeability and durability is prepared in a steam curing manner. According to the method, the advantage that the influence of the high-glass-transition-temperature polymer on the compressive strength of the concrete (mortar) is small is brought into play, the breaking strength, the impermeability and the durability of the concrete (mortar) can be greatly improved through polymer film forming, and meanwhile, the common defects of coarse pore diameter and high brittleness of an existing steam-cured component are also overcome.
本发明涉及一种组合物、预制构件及其应用。所述组合物包括胶凝材料、聚合物乳液和/或可再分散聚合物胶粉、细骨料以及任选的粗骨料，所述聚合物乳液和/或可再分散聚合物胶粉的玻璃化转变温度大于20℃。本发明通过将高玻璃化温度的聚合物乳液应用于混凝土(砂浆)预制构件中，通过蒸养的方式制得力学性能、抗渗性、耐久性优异的混凝土预制构件。该方法既发挥了高玻璃化转变温度聚合物对混凝土(砂浆)抗压强度影响小的优势，又能通过聚合物成膜极大提高混凝土(砂浆)的抗折强度、抗渗性能和耐久性，同时也克服了目前蒸养构件普遍存在的孔径粗糙、脆性大的缺点。
Composition, prefabricated part and preparation method of prefabricated part
一种组合物、预制构件及其制备方法
KONG XIANGMING (Autor:in) / ZHANG CHAOYANG (Autor:in) / WANG JIAN (Autor:in) / YIN JIANHAO (Autor:in) / YU JIANWEI (Autor:in)
11.08.2020
Patent
Elektronische Ressource
Chinesisch
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