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Machine-made sand dry hard high-strength concrete and preparation method thereof
The invention belongs to the technical field of railway concrete engineering. The invention relates to dry hard concrete, and in particular to machine-made sand dry hard high-strength concrete and a preparation method thereof. The concrete is prepared from the following components in parts by weight: 350 to 400 parts of Portland cement, 80 to 100 parts of fly ash, 50 to 80 parts of viscosity modifying material, 700 to 800 parts of machine-made sand, 900 to 1000 parts of broken stone, 135 to 150 parts of water, 6 to 6.5 parts of water reducing agent and 20 to 30 parts of ceramic coating powder.By increasing the content of the machine-made sandstone powder, the amount of sleeper concrete slurry is increased, pores and bubbles on the surface of the sleeper are reduced, and the appearance quality of the sleeper is improved; in addition, by adding the viscosity modifying material, the viscosity of the sleeper concrete is reduced, the constructability of the concrete is improved, and the production efficiency of the sleeper is improved.
本发明属于铁路混凝土工程技术领域，涉及一种干硬性混凝土，特别涉及一种机制砂干硬性高强混凝土及其制备方法，按照重量份数计算，包括如下组分：波特兰水泥350~400份，粉煤灰80~100份，粘度改性材料50~80份，机制砂700~800份，碎石900~1000份，水135~150份，减水剂6~6.5份和陶瓷涂层粉末20~30份。本发明通过增加机制砂石粉含量，丰富轨枕混凝土浆体量，减少了轨枕表面孔隙和气泡，提高轨枕外观质量；另外通过添加粘度改性材料，降低轨枕混凝土粘度，提高混凝土可施工性，提高轨枕生产效率。
Machine-made sand dry hard high-strength concrete and preparation method thereof
The invention belongs to the technical field of railway concrete engineering. The invention relates to dry hard concrete, and in particular to machine-made sand dry hard high-strength concrete and a preparation method thereof. The concrete is prepared from the following components in parts by weight: 350 to 400 parts of Portland cement, 80 to 100 parts of fly ash, 50 to 80 parts of viscosity modifying material, 700 to 800 parts of machine-made sand, 900 to 1000 parts of broken stone, 135 to 150 parts of water, 6 to 6.5 parts of water reducing agent and 20 to 30 parts of ceramic coating powder.By increasing the content of the machine-made sandstone powder, the amount of sleeper concrete slurry is increased, pores and bubbles on the surface of the sleeper are reduced, and the appearance quality of the sleeper is improved; in addition, by adding the viscosity modifying material, the viscosity of the sleeper concrete is reduced, the constructability of the concrete is improved, and the production efficiency of the sleeper is improved.
本发明属于铁路混凝土工程技术领域，涉及一种干硬性混凝土，特别涉及一种机制砂干硬性高强混凝土及其制备方法，按照重量份数计算，包括如下组分：波特兰水泥350~400份，粉煤灰80~100份，粘度改性材料50~80份，机制砂700~800份，碎石900~1000份，水135~150份，减水剂6~6.5份和陶瓷涂层粉末20~30份。本发明通过增加机制砂石粉含量，丰富轨枕混凝土浆体量，减少了轨枕表面孔隙和气泡，提高轨枕外观质量；另外通过添加粘度改性材料，降低轨枕混凝土粘度，提高混凝土可施工性，提高轨枕生产效率。
Machine-made sand dry hard high-strength concrete and preparation method thereof
一种机制砂干硬性高强混凝土及其制备方法
TAN PENG (author) / XIA JINGLIANG (author) / TAO YUANHONG (author) / WEN XINLAN (author) / ZHOU YONGXIANG (author) / WANG WEI (author) / CHEN PING (author) / MENG XIAOPENG (author)
2020-09-04
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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