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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 concrete, in particular to machine-made sand concrete and a preparation method thereof. The concrete is prepared from the following materials in parts by weight: 315 to 325 parts of cement, 780 to 800 parts of machine-made sand, 1050 to 1070 parts of gravel (320 to 340 parts of gravel with the particle size of 5 to 10 mm and 710 to 730 parts of gravel with the particle size of 10 to 20 mm), 160 to 180 parts of water, 50 to 55 parts of fly ash, 8.5 to 8.8 parts of additive, 3.7 to 3.9 parts of KH550 silane coupling agent and 37 to 39 parts of absolute ethyl alcohol. And the admixture is a polycarboxylic acid water reducer and an air entraining agent, so that the structure of the aggregate and the structure of an aggregate-cement interface transition area are improved. After the grain composition of the machine-made sand is optimized to a certain extent, a specific substitution rate is selected, and the performance of the machine-made sand modified by the silane coupling agent can be superior to partial performance of all-natural sand concrete under the same condition. The use standard of green materials is met, the utilization rate of the concrete prepared from the machine-made sand and the performance of the machine-made sand concrete are improved, and the economic cost is saved.
本发本发明涉及混凝土，尤其是一种机制砂混凝土及其制备方法；它包括以下重量份数的物料：水泥315‑325份、机制砂780‑800份、碎石1050‑1070份(粒径5‑10mm石子320‑340份，10‑20mm石子710‑730份)、水160‑180份、粉煤灰50‑55份、外加剂8.5‑8.8份、KH550硅烷偶联剂3.7‑3.9份、无水乙醇37‑39份。外加剂为聚羧酸减水剂和引气剂，改善了集料的结构和集料‑水泥界面过渡区的结构。对机制砂的颗粒级配进行一定的优化后，选取特定取代率，利用硅烷偶联剂进行改性后性能可以优于同等条件下全天然砂混凝土的部分性能。本发明满足绿色材料的使用标准，提高了机制砂制备混凝土的使用率和机制砂混凝土的性能，且节约经济成本。
Machine-made sand concrete and preparation method thereof
The invention relates to concrete, in particular to machine-made sand concrete and a preparation method thereof. The concrete is prepared from the following materials in parts by weight: 315 to 325 parts of cement, 780 to 800 parts of machine-made sand, 1050 to 1070 parts of gravel (320 to 340 parts of gravel with the particle size of 5 to 10 mm and 710 to 730 parts of gravel with the particle size of 10 to 20 mm), 160 to 180 parts of water, 50 to 55 parts of fly ash, 8.5 to 8.8 parts of additive, 3.7 to 3.9 parts of KH550 silane coupling agent and 37 to 39 parts of absolute ethyl alcohol. And the admixture is a polycarboxylic acid water reducer and an air entraining agent, so that the structure of the aggregate and the structure of an aggregate-cement interface transition area are improved. After the grain composition of the machine-made sand is optimized to a certain extent, a specific substitution rate is selected, and the performance of the machine-made sand modified by the silane coupling agent can be superior to partial performance of all-natural sand concrete under the same condition. The use standard of green materials is met, the utilization rate of the concrete prepared from the machine-made sand and the performance of the machine-made sand concrete are improved, and the economic cost is saved.
本发本发明涉及混凝土，尤其是一种机制砂混凝土及其制备方法；它包括以下重量份数的物料：水泥315‑325份、机制砂780‑800份、碎石1050‑1070份(粒径5‑10mm石子320‑340份，10‑20mm石子710‑730份)、水160‑180份、粉煤灰50‑55份、外加剂8.5‑8.8份、KH550硅烷偶联剂3.7‑3.9份、无水乙醇37‑39份。外加剂为聚羧酸减水剂和引气剂，改善了集料的结构和集料‑水泥界面过渡区的结构。对机制砂的颗粒级配进行一定的优化后，选取特定取代率，利用硅烷偶联剂进行改性后性能可以优于同等条件下全天然砂混凝土的部分性能。本发明满足绿色材料的使用标准，提高了机制砂制备混凝土的使用率和机制砂混凝土的性能，且节约经济成本。
Machine-made sand concrete and preparation method thereof
一种机制砂混凝土及其制备方法
HUANG KAIJIAN (author) / ZHAO YI (author) / SHEN GONG (author) / MIAO YIXIN (author) / DONG ZHIFENG (author) / LI WEIJUN (author) / JIANG HAO (author)
2023-04-11
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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