Crack-resistant concrete and preparation method thereof: Fid-Bau Portal

Crack-resistant concrete and preparation method thereof

YANG JIANLI / DANG PENGPENG / LU CHAOMING / QU CHEN

The invention relates to the field of concrete, and particularly discloses crack-resistant concrete and a preparation method thereof. The concrete provided by the invention is prepared from the following components in parts by weight: cement, coarse aggregate, fine aggregate, water, a water reducing agent, a defoaming agent, fly ash, diatomite, super absorbent resin, carbon fibers, styrene-acrylic emulsion and silica gel. The concrete provided by the invention has relatively high compressive strength and relatively excellent crack resistance. The preparation method of the concrete comprises the following steps: S1, crushing silica gel, mixing the crushed silica gel with diatomite at a high temperature, and performing natural cooling to room temperature to obtain a mixture; S2, stirring and adding the cement, the coarse aggregate, the fine aggregate and the defoaming agent into the mixture obtained in the step S1, and adding the water, the fly ash, the styrene-acrylic emulsion and the water reducing agent to obtain a mixture; and S3, mixing the super absorbent resin and the carbon fibers at a medium temperature, then performing cooling to the room temperature, and adding a cooled material into the mixture obtained in the step S2 to obtain the anti-crack concrete. The preparation method provided by the invention is simple and easy to operate.

本申请涉及混凝土领域，具体公开了一种抗裂性混凝土及其制备方法。本申请的混凝土以下按重量份的组分：水泥、粗骨料、细骨料、水、减水剂、消泡剂、粉煤灰，硅藻土、高吸水树脂、碳纤维、苯丙乳液和硅胶，本申请提供的混凝土具有较高的抗压强度和较优的抗裂性能；本申请中混凝土的制备方法包括以下步骤：S1，硅胶粉碎后与硅藻土高温混合后自然冷却至室温，得混合体；S2，将水泥、粗骨料、细骨料、消泡剂搅拌后，加入步骤S1中，得到混合体，再加入水、粉煤灰、苯丙乳液和减水剂，得混合料；S3，将高吸水树脂和碳纤维中温混合后冷却至室温，加入至步骤S2中得到的混合料中，得到抗裂性混凝土。本申请提供的制备方法简单易操作。

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