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High-performance airtight concrete and preparation method thereof
The invention discloses high-performance airtight concrete and a preparation method thereof. The concrete comprises 444-461 kg/m < 3 > of mixed cement; coal ash microspheres are 121-126 kg/m < 3 >; 162-168 kg/m < 3 > of mineral powder; 81-84 kg/m < 3 > of silica fume; the fine aggregate is 774-806 kg/m < 3 >; the coarse aggregate is 1114 to 1160kg/m < 3 >; 178-184 kg/m < 3 > of water; 2.02-2.1 kg/m < 3 > of a water reducing agent; 1.62 to 1.68 kg/m < 3 > of a defoaming agent; and the content of nano SiO2 is 28.08-16.76 kg/m < 3 > The low-heat cement is matched with the sulphoaluminate cement, the pre-dispersed nano SiO2 and the additive, so that the hydration and hardening process is improved, early and later compressive strength development and pore structure refinement of the concrete are facilitated, and the compactness and crack resistance of the concrete in a vacuum environment are improved.
本发明公开了一种高性能气密性混凝土及其制备方法，该混凝土包括混合水泥444～461kg/m3；粉煤灰微珠121～126kg/m3；矿粉162～168kg/m3；硅灰81～84kg/m3；细骨料774～806kg/m3；粗骨料1114～1160kg/m3；水178～184kg/m3；减水剂2.02～2.1kg/m3；消泡剂1.62～1.68kg/m3；纳米SiO28.08～16.76kg/m3。本发明使用低热水泥搭配硫铝酸盐水泥、预分散纳米SiO2和外加剂，改善水化硬化过程，利于混凝土早后期抗压强度发展及孔结构细化，提高混凝土在真空环境中的密实度及抗裂性。
High-performance airtight concrete and preparation method thereof
The invention discloses high-performance airtight concrete and a preparation method thereof. The concrete comprises 444-461 kg/m < 3 > of mixed cement; coal ash microspheres are 121-126 kg/m < 3 >; 162-168 kg/m < 3 > of mineral powder; 81-84 kg/m < 3 > of silica fume; the fine aggregate is 774-806 kg/m < 3 >; the coarse aggregate is 1114 to 1160kg/m < 3 >; 178-184 kg/m < 3 > of water; 2.02-2.1 kg/m < 3 > of a water reducing agent; 1.62 to 1.68 kg/m < 3 > of a defoaming agent; and the content of nano SiO2 is 28.08-16.76 kg/m < 3 > The low-heat cement is matched with the sulphoaluminate cement, the pre-dispersed nano SiO2 and the additive, so that the hydration and hardening process is improved, early and later compressive strength development and pore structure refinement of the concrete are facilitated, and the compactness and crack resistance of the concrete in a vacuum environment are improved.
本发明公开了一种高性能气密性混凝土及其制备方法，该混凝土包括混合水泥444～461kg/m3；粉煤灰微珠121～126kg/m3；矿粉162～168kg/m3；硅灰81～84kg/m3；细骨料774～806kg/m3；粗骨料1114～1160kg/m3；水178～184kg/m3；减水剂2.02～2.1kg/m3；消泡剂1.62～1.68kg/m3；纳米SiO28.08～16.76kg/m3。本发明使用低热水泥搭配硫铝酸盐水泥、预分散纳米SiO2和外加剂，改善水化硬化过程，利于混凝土早后期抗压强度发展及孔结构细化，提高混凝土在真空环境中的密实度及抗裂性。
High-performance airtight concrete and preparation method thereof
一种高性能气密性混凝土及其制备方法
QING TING (author) / WANG NING (author) / YANG LI (author) / ZHU MENG (author) / TIAN XIAOSU (author) / XIONG QIAN (author) / YI FEIYANG (author)
2024-12-03
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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