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Micro-expansive concrete applied in winter and preparation method thereof
The invention relates to the technical field of concrete, and particularly discloses micro-expansive concrete applied in winter and a preparation method of the micro-expansive concrete. The micro-expansive concrete applied in winter comprises water, cement, fly ash, machine-made sand, natural sand, gravel, an anti-freezing agent and a composite admixture, wherein the composite admixture comprises an expanding agent, calcium dodecyl benzene sulfonate and cetyl alcohol. The preparation method comprises the steps of heating 25%-35% of water to the temperature of 40-45 DEG C, and mixing the water with the composite admixture and the anti-freezing agent to obtain an aqueous solution of the admixture; heating the rest amount of water to the temperature of 75-85 DEG C, and then adding the aggregate; and adding the rest raw materials and the aqueous solution of the admixture. The micro-expansive concrete applied in winter has the advantage of obviously improving the crack resistance of the concrete in a low-temperature environment in winter.
本申请涉及混凝土技术领域，具体公开了一种冬施微膨胀混凝土及其制备方法。一种冬施微膨胀混凝土，包括水、水泥、粉煤灰、机制砂、天然砂、碎石、防冻剂、复合外加剂；复合外加剂包括膨胀剂、十二烷基苯磺酸钙、鲸蜡醇；其制备方法为：将25％‑35％用量的水加热至40‑45℃后混入复合外加剂以及防冻剂得外加剂的水溶液；将剩余用量的水加热至75‑85℃后加入骨料；将其余原料同外加剂的水溶液加入制得。本申请的一种冬施微膨胀混凝土具有明显提高冬季低温环境下混凝土抗裂性能的优点。
Micro-expansive concrete applied in winter and preparation method thereof
The invention relates to the technical field of concrete, and particularly discloses micro-expansive concrete applied in winter and a preparation method of the micro-expansive concrete. The micro-expansive concrete applied in winter comprises water, cement, fly ash, machine-made sand, natural sand, gravel, an anti-freezing agent and a composite admixture, wherein the composite admixture comprises an expanding agent, calcium dodecyl benzene sulfonate and cetyl alcohol. The preparation method comprises the steps of heating 25%-35% of water to the temperature of 40-45 DEG C, and mixing the water with the composite admixture and the anti-freezing agent to obtain an aqueous solution of the admixture; heating the rest amount of water to the temperature of 75-85 DEG C, and then adding the aggregate; and adding the rest raw materials and the aqueous solution of the admixture. The micro-expansive concrete applied in winter has the advantage of obviously improving the crack resistance of the concrete in a low-temperature environment in winter.
本申请涉及混凝土技术领域，具体公开了一种冬施微膨胀混凝土及其制备方法。一种冬施微膨胀混凝土，包括水、水泥、粉煤灰、机制砂、天然砂、碎石、防冻剂、复合外加剂；复合外加剂包括膨胀剂、十二烷基苯磺酸钙、鲸蜡醇；其制备方法为：将25％‑35％用量的水加热至40‑45℃后混入复合外加剂以及防冻剂得外加剂的水溶液；将剩余用量的水加热至75‑85℃后加入骨料；将其余原料同外加剂的水溶液加入制得。本申请的一种冬施微膨胀混凝土具有明显提高冬季低温环境下混凝土抗裂性能的优点。
Micro-expansive concrete applied in winter and preparation method thereof
一种冬施微膨胀混凝土及其制备方法
SUN ZHONGHUA (author) / LIU YONGHONG (author) / LI TIEKUI (author) / LI CHENGLONG (author) / SUN SHUSHEN (author)
2021-05-28
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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