A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Full-machine-made sand high-strength super high-rise pump concrete as well as production method and application thereof
The invention provides full-machine-made sand high-strength super high-rise pump concrete, and belongs to the technical field of building materials. The full-machine-made sand high-strength super high-rise pump concrete is prepared from the following raw materials in parts by mass: 14-15 parts of cement, 7-9 parts of fly ash, 1-2 parts of silica fume, 30-35 parts of machine-made sand, 35-40 partsof broken stone, 0.2-0.5 part of a magnesium expanding agent, 0.4-0.5 part of an additive and 6-7 parts of mixing water. The super high-rise pump concrete is produced by using the machine-made sand asa fine aggregate; the slump of the concrete is greater than or equal to 260mm; the expansion is greater than or equal to 700mm, the slump cone time is less than or equal to 3s, the V funnel emptyingtime is less than or equal to 18s, the pressure bleeding rate is 0%, the 28d compressive strength is more than 90MPa, the super high-rise pumping with the height of 200-460m and the pouring fall of more than or equal to 15m can be realized, and the full-machine-made sand high-strength super high-rise pump concrete has the characteristics of high strength, low viscosity, good homogeneity and no time loss in 3h.
本发明提供一种全机制砂高强超高层泵送混凝土，属于建筑材料技术领域。所述混凝土由包括以下质量份的原料制成：水泥：14份‑15份，粉煤灰：7份‑9份，硅灰：1份‑2份，机制砂：30份‑35份，碎石：35份‑40份，镁质膨胀剂：0.2份‑0.5份，外加剂：0.4份‑0.5份，拌合水：6份‑7份。本发明还提供所述混凝土的制备方法和应用。本发明混凝土全部采用机制砂作为细骨料生产超高层泵送混凝土，混凝土坍落度≥260mm，扩展度≥700mm，倒坍落度筒时间≤3s，V漏斗倒空时间≤18s，压力泌水率0％，28d抗压强度90MPa以上，具有强度高，粘度低，匀质性好，3h无经时损失的特点，可实现高度为200m～460m、浇筑落差≥15m的超高层泵送。
Full-machine-made sand high-strength super high-rise pump concrete as well as production method and application thereof
The invention provides full-machine-made sand high-strength super high-rise pump concrete, and belongs to the technical field of building materials. The full-machine-made sand high-strength super high-rise pump concrete is prepared from the following raw materials in parts by mass: 14-15 parts of cement, 7-9 parts of fly ash, 1-2 parts of silica fume, 30-35 parts of machine-made sand, 35-40 partsof broken stone, 0.2-0.5 part of a magnesium expanding agent, 0.4-0.5 part of an additive and 6-7 parts of mixing water. The super high-rise pump concrete is produced by using the machine-made sand asa fine aggregate; the slump of the concrete is greater than or equal to 260mm; the expansion is greater than or equal to 700mm, the slump cone time is less than or equal to 3s, the V funnel emptyingtime is less than or equal to 18s, the pressure bleeding rate is 0%, the 28d compressive strength is more than 90MPa, the super high-rise pumping with the height of 200-460m and the pouring fall of more than or equal to 15m can be realized, and the full-machine-made sand high-strength super high-rise pump concrete has the characteristics of high strength, low viscosity, good homogeneity and no time loss in 3h.
本发明提供一种全机制砂高强超高层泵送混凝土，属于建筑材料技术领域。所述混凝土由包括以下质量份的原料制成：水泥：14份‑15份，粉煤灰：7份‑9份，硅灰：1份‑2份，机制砂：30份‑35份，碎石：35份‑40份，镁质膨胀剂：0.2份‑0.5份，外加剂：0.4份‑0.5份，拌合水：6份‑7份。本发明还提供所述混凝土的制备方法和应用。本发明混凝土全部采用机制砂作为细骨料生产超高层泵送混凝土，混凝土坍落度≥260mm，扩展度≥700mm，倒坍落度筒时间≤3s，V漏斗倒空时间≤18s，压力泌水率0％，28d抗压强度90MPa以上，具有强度高，粘度低，匀质性好，3h无经时损失的特点，可实现高度为200m～460m、浇筑落差≥15m的超高层泵送。
Full-machine-made sand high-strength super high-rise pump concrete as well as production method and application thereof
一种全机制砂高强超高层泵送混凝土及其生产方法和应用
LIU YONGDAO (author) / WANG JUN (author) / ZHANG YUAN (author) / LAN CONG (author) / ZHAO JIN (author) / WANG BINGHE (author)
2020-07-10
Patent
Electronic Resource
Chinese
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