Precast box girder vibration-free concrete and preparation method thereof

• Main Authors: LIN ZHIJIE, LI MEI, ZENG LINGKUAN, XIAO YIWEN, TANG HOUFU, YANG YUJIE, CHEN JINXUAN, JIE HAO, ZHU KEHONG, TANG BIN
• Format: Patent
• Language: Chinese; English
• Published: 10.11.2023
• Subjects: ARTIFICIAL STONE; CEMENTS; CERAMICS; CHEMISTRY; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS; CONCRETE; LIME, MAGNESIA; METALLURGY; REFRACTORIES; SLAG; TREATMENT OF NATURAL STONE

According to the vibration-free concrete for the prefabricated box girder and the preparation method of the vibration-free concrete, the pore structure of the concrete can be improved, the porosity and the gap size can be reduced, and the compactness and the strength of the concrete can be improved by adding the silica gel, and the silica gel material has high specific surface area and water storage capacity and can provide a better reaction effect; according to the present invention, with the addition of the defoaming agent and the sodium citrate, the forming of the hydration product in the concrete and the hardening process can be promoted, such that the mechanical properties such as the compression resistance, the tensile strength and the durability of the concrete can be easily improved, and the added defoaming agent and the added sodium citrate can achieve the synergistic effect so as to improve the fluidity and the plasticity of the concrete, such that the concrete can be uniformly filled in the mold; t