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A platform for research: civil engineering, architecture and urbanism
High-performance machine-made sand concrete and preparation method thereof
The invention discloses high-performance machine-made sand concrete, and relates to the technical field of building materials. The high-performance machine-made sand concrete is prepared from the following components in parts by weight: 310 to 380 parts of Portland cement, 80 to 100 parts of fly ash, 110 to 130 parts of mineral powder, 40 to 55 parts of silica fume, 600 to 780 parts of machine-made sand, 900 to 1160 parts of broken stone, 8 to 11 parts of an efficient water reducer and 135 to 165 parts of water. The preparation method of the high-performance machine-made sand concrete comprises the following steps: S1, weighing the raw materials according to the proportion, mixing the cement, mineral powder, coal ash, silica fume and machine-made sand, and stirring to obtain a mixed material; S2, adding 80% of water into the mixture obtained in the step S1, continuing to stir, then adding an efficient water reducer and the remaining 20% of water while stirring, and continuing to stir to obtain machine-made sand mortar; and S3, adding broken stone into the machine-made sand mortar obtained in the step S2, and continuously stirring to obtain the C80 machine-made sand concrete. The shortages of high viscosity, poor fluidity and difficulty in pumping of machine-made sand high-strength concrete are overcome.
本发明公开了一种高性能机制砂混凝土，涉及建筑材料的技术领域，高性能机制砂混凝土按重量份数计，包括以下组分：硅酸盐水泥310‑380份、粉煤灰80‑100份、矿粉110‑130份、硅灰40‑55份、机制砂600‑780份、碎石900‑1160份、高效减水剂8‑11份、水135‑165份。该高性能机制砂混凝土的制备方法包括以下步骤：S1.按配比量取各原料，将水泥、矿粉、煤灰、硅灰、机制砂混合并进行搅拌，得到混合物料；S2.在S1步骤得到的混合物中加入80%的水并继续搅拌，然后边搅拌边加入高效减水剂和剩余20%的水，继续搅拌得到机制砂砂浆；S3.向S2步骤得到的机制砂砂浆中加入碎石，继续搅拌得C80机制砂混凝土。本发明具有克服机制砂高强混凝土粘度高、流动性差、难以泵送的局限性的优点。
High-performance machine-made sand concrete and preparation method thereof
The invention discloses high-performance machine-made sand concrete, and relates to the technical field of building materials. The high-performance machine-made sand concrete is prepared from the following components in parts by weight: 310 to 380 parts of Portland cement, 80 to 100 parts of fly ash, 110 to 130 parts of mineral powder, 40 to 55 parts of silica fume, 600 to 780 parts of machine-made sand, 900 to 1160 parts of broken stone, 8 to 11 parts of an efficient water reducer and 135 to 165 parts of water. The preparation method of the high-performance machine-made sand concrete comprises the following steps: S1, weighing the raw materials according to the proportion, mixing the cement, mineral powder, coal ash, silica fume and machine-made sand, and stirring to obtain a mixed material; S2, adding 80% of water into the mixture obtained in the step S1, continuing to stir, then adding an efficient water reducer and the remaining 20% of water while stirring, and continuing to stir to obtain machine-made sand mortar; and S3, adding broken stone into the machine-made sand mortar obtained in the step S2, and continuously stirring to obtain the C80 machine-made sand concrete. The shortages of high viscosity, poor fluidity and difficulty in pumping of machine-made sand high-strength concrete are overcome.
本发明公开了一种高性能机制砂混凝土，涉及建筑材料的技术领域，高性能机制砂混凝土按重量份数计，包括以下组分：硅酸盐水泥310‑380份、粉煤灰80‑100份、矿粉110‑130份、硅灰40‑55份、机制砂600‑780份、碎石900‑1160份、高效减水剂8‑11份、水135‑165份。该高性能机制砂混凝土的制备方法包括以下步骤：S1.按配比量取各原料，将水泥、矿粉、煤灰、硅灰、机制砂混合并进行搅拌，得到混合物料；S2.在S1步骤得到的混合物中加入80%的水并继续搅拌，然后边搅拌边加入高效减水剂和剩余20%的水，继续搅拌得到机制砂砂浆；S3.向S2步骤得到的机制砂砂浆中加入碎石，继续搅拌得C80机制砂混凝土。本发明具有克服机制砂高强混凝土粘度高、流动性差、难以泵送的局限性的优点。
High-performance machine-made sand concrete and preparation method thereof
一种高性能机制砂混凝土及其制备方法
YUAN YANGMEI (author) / TAO NING (author) / KE YUXIN (author)
2020-09-25
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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