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High-ground-temperature tunnel heat insulation lining concrete and preparation method thereof
The invention belongs to the technical field of civil engineering materials, and particularly relates to high-ground-temperature tunnel heat insulation lining concrete. The concrete of 1 m<3> includes, by mass, 300 kg to 380 kg of cement, 850 kg to 1,000 kg of coarse aggregate, 450 kg to 550 kg of sand, 200 kg to 220 kg of water glass, 8 kg to 12 kg of glass beads, 50 kg to 150 kg of second-grade fly ash, 40 kg to 80 kg of steel fibers, 3 kg to 5 kg of acrylamide and 2 kg to 3 kg of polycarboxylic acid high-performance water reducing agents. According to the high-ground-temperature tunnel heat insulation lining concrete, surrounding rock supporting and heat insulation are combined, the difficulty of tunnel construction is reduced, good heat insulation performance is achieved in the high-ground-temperature environment, meanwhile, strength cannot be lowered, the hardened concrete is higher in strength, the strength requirement of the lining concrete can be met, and the mechanical property of the concrete at high ground temperature is improved. Meanwhile, the concrete has good water and cracking preventing performance.
High-ground-temperature tunnel heat insulation lining concrete and preparation method thereof
The invention belongs to the technical field of civil engineering materials, and particularly relates to high-ground-temperature tunnel heat insulation lining concrete. The concrete of 1 m<3> includes, by mass, 300 kg to 380 kg of cement, 850 kg to 1,000 kg of coarse aggregate, 450 kg to 550 kg of sand, 200 kg to 220 kg of water glass, 8 kg to 12 kg of glass beads, 50 kg to 150 kg of second-grade fly ash, 40 kg to 80 kg of steel fibers, 3 kg to 5 kg of acrylamide and 2 kg to 3 kg of polycarboxylic acid high-performance water reducing agents. According to the high-ground-temperature tunnel heat insulation lining concrete, surrounding rock supporting and heat insulation are combined, the difficulty of tunnel construction is reduced, good heat insulation performance is achieved in the high-ground-temperature environment, meanwhile, strength cannot be lowered, the hardened concrete is higher in strength, the strength requirement of the lining concrete can be met, and the mechanical property of the concrete at high ground temperature is improved. Meanwhile, the concrete has good water and cracking preventing performance.
High-ground-temperature tunnel heat insulation lining concrete and preparation method thereof
CHEN GUOQING (author) / LIU HUI (author) / ZHAO CONG (author) / LI TIANBIN (author)
2015-11-18
Patent
Electronic Resource
English
IPC:
C04B
Kalk
,
LIME
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