Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
The invention relates to the technical field of concrete, in particular to superfine mixed sand concrete adopting an additive and a preparation method of the superfine mixed sand concrete. The superfine mixed sand concrete adopting the admixture is prepared from the following raw materials in parts by weight: 200 to 300 parts of cement, 80 to 120 parts of fly ash, 50 to 70 parts of slag, 600 to 800 parts of superfine sand, 400 to 550 parts of coarse sand and 8 to 12 parts of a water reducing agent composition. The cationic surface active agent is attached to the surface of the super-fine sand, the coarse sand is the porous gravel particles, part of the super-fine sand enters the holes of the coarse sand in the stirring process of the super-fine sand and the coarse sand, part of the super-fine sand is attached to the outer wall of the coarse sand, and the water reducing agent composition is distributed between the coarse sand particles. The water reducing agent composition is distributed among coarse sand particles, the dispersity and the stability of a formed mixture are improved through cooperation of the cationic surface active agent and the water reducing agent composition, and it is ensured that the finally formed concrete is high in anti-cracking degree and high in pressure resistance.
本发明涉及混凝土技术领域，尤其是采用外加剂的特细混合砂混凝土及其制备方法。该采用外加剂的特细混合砂混凝土由如下重量份数的原料组成：水泥200‑300份、粉煤灰80‑120份、矿渣50‑70份、特细砂600‑800份、粗砂400‑550份和减水剂组合物8‑12份。本发明中由于特细砂的表面附着有阳离子表面活性剂，且粗砂为多孔碎石粒，在特细砂和粗砂搅拌过程中部分特细砂进入粗砂孔中，部分特细砂附着于粗砂的外壁，粗砂颗粒与粗砂颗粒之间分布有减水剂组合物，该减水剂组合物分布于粗砂颗粒之间，阳离子表面活性剂与减水剂组合物的配合提高形成的混合物的分散性和稳定性，确保最终形成的混凝土抗裂程度高，抗压能力性能强。
The invention relates to the technical field of concrete, in particular to superfine mixed sand concrete adopting an additive and a preparation method of the superfine mixed sand concrete. The superfine mixed sand concrete adopting the admixture is prepared from the following raw materials in parts by weight: 200 to 300 parts of cement, 80 to 120 parts of fly ash, 50 to 70 parts of slag, 600 to 800 parts of superfine sand, 400 to 550 parts of coarse sand and 8 to 12 parts of a water reducing agent composition. The cationic surface active agent is attached to the surface of the super-fine sand, the coarse sand is the porous gravel particles, part of the super-fine sand enters the holes of the coarse sand in the stirring process of the super-fine sand and the coarse sand, part of the super-fine sand is attached to the outer wall of the coarse sand, and the water reducing agent composition is distributed between the coarse sand particles. The water reducing agent composition is distributed among coarse sand particles, the dispersity and the stability of a formed mixture are improved through cooperation of the cationic surface active agent and the water reducing agent composition, and it is ensured that the finally formed concrete is high in anti-cracking degree and high in pressure resistance.
本发明涉及混凝土技术领域，尤其是采用外加剂的特细混合砂混凝土及其制备方法。该采用外加剂的特细混合砂混凝土由如下重量份数的原料组成：水泥200‑300份、粉煤灰80‑120份、矿渣50‑70份、特细砂600‑800份、粗砂400‑550份和减水剂组合物8‑12份。本发明中由于特细砂的表面附着有阳离子表面活性剂，且粗砂为多孔碎石粒，在特细砂和粗砂搅拌过程中部分特细砂进入粗砂孔中，部分特细砂附着于粗砂的外壁，粗砂颗粒与粗砂颗粒之间分布有减水剂组合物，该减水剂组合物分布于粗砂颗粒之间，阳离子表面活性剂与减水剂组合物的配合提高形成的混合物的分散性和稳定性，确保最终形成的混凝土抗裂程度高，抗压能力性能强。
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