Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Anti-freezing concrete and preparation method thereof
The invention discloses anti-freezing concrete and a preparation method. The anti-freezing concrete is composed of aggregate, a cementing material, a water reducing agent, a waterproof agent and water, each cubic meter of the anti-freezing concrete contains 18-17kg of the aggregate, 400kg of the cementing material, 7.2kg of the water reducing agent and 10kg of the waterproof agent, the content ofwater is calculated according to the weight ratio of water to cementing material of 0.44: 1, the aggregate is composed of medium sand and broken stone, the broken stone is formed by continuously proportioning broken stone with the particle size D of greater than or equal to 5mm and less than 20mm and broken stone with the particle size D of greater than or equal to 20mm and less than or equal to 40mm in two stages. The preparation method comprises the steps of adding water accounting for 1/3-1/2 of the total volume into the water reducing agent, uniformly mixing the obtained water reducing agent aqueous solution with the cement, the II-grade fly ash and the waterproof agent, adding the medium sand, the gravels and the residual volume of water, controlling the rotating speed to be 80-100r/min, and stirring for 60-180 seconds, thereby finally obtaining the anti-freezing concrete with high compactness, small shrinkage and excellent anti-freezing property.
本发明公开一种抗冻的混凝土及制备方法，所用原料由骨料、胶凝材料、减水剂、防水剂和水组成，按每立方米计算含1817kg骨料、400kg胶凝材料、7.2kg减水剂、10kg防水剂，水的含量按水:胶凝材料的重量比为0.44:1的比例计算，所述骨料由中砂和碎石组成，其中碎石由5mm≤粒径D＜20mm和20mm≤粒径D≤40mm的碎石两级连续配比而成。其制备方法即将总体积1/3‑1/2的水加入到减水剂中，将得到的减水剂水溶液与水泥、II级粉煤灰，防水剂一起混匀后再加入中砂、碎石及剩余体积的水并控制转速为80‑100r/min搅拌60‑180秒，最终得到抗冻的混凝土密实度高、收缩小，具有优异的抗冻性能。
Anti-freezing concrete and preparation method thereof
The invention discloses anti-freezing concrete and a preparation method. The anti-freezing concrete is composed of aggregate, a cementing material, a water reducing agent, a waterproof agent and water, each cubic meter of the anti-freezing concrete contains 18-17kg of the aggregate, 400kg of the cementing material, 7.2kg of the water reducing agent and 10kg of the waterproof agent, the content ofwater is calculated according to the weight ratio of water to cementing material of 0.44: 1, the aggregate is composed of medium sand and broken stone, the broken stone is formed by continuously proportioning broken stone with the particle size D of greater than or equal to 5mm and less than 20mm and broken stone with the particle size D of greater than or equal to 20mm and less than or equal to 40mm in two stages. The preparation method comprises the steps of adding water accounting for 1/3-1/2 of the total volume into the water reducing agent, uniformly mixing the obtained water reducing agent aqueous solution with the cement, the II-grade fly ash and the waterproof agent, adding the medium sand, the gravels and the residual volume of water, controlling the rotating speed to be 80-100r/min, and stirring for 60-180 seconds, thereby finally obtaining the anti-freezing concrete with high compactness, small shrinkage and excellent anti-freezing property.
本发明公开一种抗冻的混凝土及制备方法，所用原料由骨料、胶凝材料、减水剂、防水剂和水组成，按每立方米计算含1817kg骨料、400kg胶凝材料、7.2kg减水剂、10kg防水剂，水的含量按水:胶凝材料的重量比为0.44:1的比例计算，所述骨料由中砂和碎石组成，其中碎石由5mm≤粒径D＜20mm和20mm≤粒径D≤40mm的碎石两级连续配比而成。其制备方法即将总体积1/3‑1/2的水加入到减水剂中，将得到的减水剂水溶液与水泥、II级粉煤灰，防水剂一起混匀后再加入中砂、碎石及剩余体积的水并控制转速为80‑100r/min搅拌60‑180秒，最终得到抗冻的混凝土密实度高、收缩小，具有优异的抗冻性能。
Anti-freezing concrete and preparation method thereof
一种抗冻的混凝土及制备方法
SUN YUNFEI (Autor:in) / ZHOU ZONGBO (Autor:in) / CHEN ZHIKUO (Autor:in) / HOU JINCHEN (Autor:in) / ZHANG ZIKAI (Autor:in)
05.01.2021
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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