Powder material for repairing blasted prestressed high-strength concrete pipe pile and preparation method thereof
A high-strength concrete and prestressed technology, applied in the field of building materials, can solve the problems of complicated operation, cumbersome repair process, and the strength does not meet the strength requirements of the pipe pile body, and achieves the effect of high strength and guaranteed durability.
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Embodiment 1
[0027] In parts by weight, weigh 450 parts of sulfoaluminate cement with a strength grade of 62.5, 35 parts of silica fume, 360 parts of natural sand, 0.3 parts of polyethylene oxide, 100 parts of steel fiber, 5 parts of basalt fiber, and heavy calcium carbonate 50 parts, 1.4 parts of water reducer. The natural sand is medium-coarse sand with a fineness modulus of 2.5-3.3, a mud content of no more than 1%, a mud content of 0, and a chloride ion content of less than 0.01%.
[0028] The specific preparation method is as follows:
[0029] (1) Put natural sand, silica fume, cement, heavy calcium carbonate, and steel fiber into the powder mixer respectively, and stop after stirring for 5 minutes;
[0030] (2) Weigh the proportioned amount of water reducer, polyethylene oxide, and basalt fiber into the container and manually stir for 3 minutes;
[0031] (3) Start the mixer, drop into the mixture of water reducing agent, polyoxyethylene, basalt fiber while stirring, and stop stirri...
Embodiment 2
[0035] In parts by weight, take 400 parts of cement with a strength grade of 62.5, 35 parts of silica fume, 360 parts of natural sand, 0.3 parts of polyethylene oxide, 100 parts of steel fiber, 1 part of polyethylene fiber, and 100 parts of heavy calcium carbonate. 1.3 parts of water reducing agent.
[0036] The specific preparation method is as follows:
[0037] (1) Put natural sand, silica fume, cement, heavy calcium carbonate, and steel fiber into the powder mixer respectively, and stop after stirring for 5 minutes;
[0038] (2) Weigh the water reducer, polyethylene oxide, and polyethylene fiber in the proportioned amount and put them into the container and manually stir for 3 minutes;
[0039] (3) Start the mixer, drop into the mixture of water reducing agent, polyethylene oxide and polyethylene fiber while stirring, and stop stirring after continuing to stir for 30 minutes;
[0040] (4) Bag and seal the stirred powder and store it for later use.
[0041] Take 25 kg of ...
Embodiment 3
[0043] In parts by weight, take 400 parts of cement with a strength grade of 72.5, 35 parts of silica fume, 360 parts of natural sand, 0.3 parts of polyethylene oxide, 100 parts of steel fiber, 2 parts of glass fiber, 100 parts of heavy calcium carbonate, minus 1.4 parts of water agent.
[0044] The specific preparation method is as follows:
[0045] (1) Put natural sand, silica fume, cement, heavy calcium carbonate, and steel fiber into the powder mixer respectively, and stop after stirring for 5 minutes;
[0046] (2) Weigh the proportioned amount of water reducer, polyethylene oxide, and glass fiber and put them into the container and manually stir for 3 minutes;
[0047] (3) Start the mixer, drop into the mixture of water reducer, polyoxyethylene and glass fiber while stirring, and stop stirring after continuing to stir for 30 minutes;
[0048] (4) Bag and seal the stirred powder and store it for later use.
[0049] Take 25 kg of the above-prepared bagged powder, add 5.5...
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Abstract
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