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A platform for research: civil engineering, architecture and urbanism
Machine-made sand concrete and preparation method thereof
The invention relates to the technical field of building material concrete, in particular to machine-made sand concrete, which is prepared from the following raw materials in parts by weight: 155 to 220 parts of water, 367 to 647 parts of cement, 634 to 728 parts of fine aggregate, 940 to 1092 parts of coarse aggregate, 0 to 53 parts of silicon powder and 0 to 8.63 parts of water reducing agent, the fine aggregate comprises one or a mixture of two of machine-made sand and river sand, the design strengths of the machine-made sand concrete are respectively C30, C50 and C80, and the water cement ratios corresponding to the strengths from low to high are respectively 0.60, 0.31 and 0.24. Based on the wet bulk density theory and the standardized mix proportion, the suitable machine-made sand concrete is adjusted, production of a concrete production unit applying the machine-made sand is facilitated, the silica powder, the water reducing agent and the machine-made sand are matched, the replacement rate of the river sand and the machine-made sand is controlled, the grain composition of the fine aggregate and the coarse aggregate is improved, and the production efficiency of the machine-made sand concrete is improved. The wet stacking density of the concrete is improved to a certain extent, so that the flowability and workability of the machine-made sand concrete are improved, and the machine-made sand concrete has good cohesiveness and water-retaining property.
本发明涉及建筑材料混凝土技术领域，尤其是涉及一种机制砂混凝土，包括如下重量份的原料：水155‑220份、水泥367‑647份、细骨料634‑728份、粗骨料940‑1092份、硅粉0‑53份和减水剂0‑8.63份；所述细骨料包括机制砂、河砂中的一种或两者的混合物，所述机制砂混凝土的设计强度分别为C30、C50、C80，强度从低到高对应的水灰比分别为0.60、0.31、0.24。本发明基于湿法堆积密度理论和规范化的配合比，从而调节出适用的机制砂混凝土，便于机制砂应用的混凝土生产单位进行生产，通过采用硅粉、减水剂与机制砂配合，通过控制河砂和机制砂的替换率，改善细骨料和粗骨料的颗粒级配，一定程度上提高混凝土的湿法堆积密度，从而提高机制砂混凝土的流动性、和易性，使其具有良好的粘聚性、保水性。
Machine-made sand concrete and preparation method thereof
The invention relates to the technical field of building material concrete, in particular to machine-made sand concrete, which is prepared from the following raw materials in parts by weight: 155 to 220 parts of water, 367 to 647 parts of cement, 634 to 728 parts of fine aggregate, 940 to 1092 parts of coarse aggregate, 0 to 53 parts of silicon powder and 0 to 8.63 parts of water reducing agent, the fine aggregate comprises one or a mixture of two of machine-made sand and river sand, the design strengths of the machine-made sand concrete are respectively C30, C50 and C80, and the water cement ratios corresponding to the strengths from low to high are respectively 0.60, 0.31 and 0.24. Based on the wet bulk density theory and the standardized mix proportion, the suitable machine-made sand concrete is adjusted, production of a concrete production unit applying the machine-made sand is facilitated, the silica powder, the water reducing agent and the machine-made sand are matched, the replacement rate of the river sand and the machine-made sand is controlled, the grain composition of the fine aggregate and the coarse aggregate is improved, and the production efficiency of the machine-made sand concrete is improved. The wet stacking density of the concrete is improved to a certain extent, so that the flowability and workability of the machine-made sand concrete are improved, and the machine-made sand concrete has good cohesiveness and water-retaining property.
本发明涉及建筑材料混凝土技术领域，尤其是涉及一种机制砂混凝土，包括如下重量份的原料：水155‑220份、水泥367‑647份、细骨料634‑728份、粗骨料940‑1092份、硅粉0‑53份和减水剂0‑8.63份；所述细骨料包括机制砂、河砂中的一种或两者的混合物，所述机制砂混凝土的设计强度分别为C30、C50、C80，强度从低到高对应的水灰比分别为0.60、0.31、0.24。本发明基于湿法堆积密度理论和规范化的配合比，从而调节出适用的机制砂混凝土，便于机制砂应用的混凝土生产单位进行生产，通过采用硅粉、减水剂与机制砂配合，通过控制河砂和机制砂的替换率，改善细骨料和粗骨料的颗粒级配，一定程度上提高混凝土的湿法堆积密度，从而提高机制砂混凝土的流动性、和易性，使其具有良好的粘聚性、保水性。
Machine-made sand concrete and preparation method thereof
一种机制砂混凝土及其制备方法
LAI MIANHENG (author) / HUANG PENG (author) / CUI JIE (author)
2023-09-01
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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