Ultrahigh-toughness concrete and preparation method thereof
A technology of ultra-high toughness and concrete, applied in the field of concrete, can solve the problems of large fatigue deformation and achieve high compressive strength, lower water-cement ratio, and high toughness
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Embodiment 1
[0040] A method for preparing ultra-high toughness concrete includes the following steps:
[0041] 1) Prepare the raw materials according to the formula: 1 part of cement, 0.1 part of silica fume, 0.05 part of slag, 0.05 part of fly ash, 0.3 part of quartz powder, 1 part of quartz sand, 1.5% of the total volume of concrete The first steel fiber, the second steel fiber with a volume content of 2% of the total volume of the concrete, 0.03 parts of nano calcium carbonate, 0.22 parts of water, and 0.01 parts of water reducing agent;
[0042] 2) First, add the cement, silica fume, fly ash, slag, quartz powder, quartz sand, nano-calcium carbonate, water reducing agent, first steel fiber, and second steel fiber to the mixing device to stir and stir. After uniformity, add formula amount of water for mixing and fluidization, control mixing speed 20-48r / min, mixing time 4-8min, you can get ultra-high toughness concrete.
[0043] In this example, the tricalcium aluminate (C 3 A) The content is...
Embodiment 2
[0046] A method for preparing ultra-high toughness concrete includes the following steps:
[0047] 1) Prepare the raw materials according to the formula: 1 part of cement, 0.2 part of silica fume, 0.02 part of slag, 0.05 part of fly ash, 0.35 part of quartz powder, 0.8 part of quartz sand, 1.0% of the total volume of concrete The first steel fiber, the second steel fiber with a volume content of 2.5% of the total volume of the concrete, 0.03 parts of nano calcium carbonate, 0.20 parts of water, and 0.014 parts of water reducing agent;
[0048] 2) First, add the cement, silica fume, fly ash, slag, quartz powder, quartz sand, nano-calcium carbonate, water reducing agent, first steel fiber, and second steel fiber to the mixing device to stir and stir. After uniformity, add formula amount of water for mixing and fluidization, control mixing speed 20-48r / min, mixing time 4-8min, you can get ultra-high toughness concrete.
[0049] Others are the same as in Example 1.
[0050] According to ...
Embodiment 3
[0052] A method for preparing ultra-high toughness concrete includes the following steps:
[0053] 1) Prepare the raw materials according to the formula: 1 part of cement, 0.1 part of silica fume, 0.15 part of slag, 0.1 part of fly ash, 0.38 part of quartz powder, 1 part of quartz sand, the volume of which is 1.5% of the total volume of concrete The first steel fiber, the second steel fiber with a volume content of 2% of the total volume of the concrete, 0.01 part of nano calcium carbonate, 0.28 part of water, and 0.015 part of water reducing agent;
[0054] 2) First, add the cement, silica fume, fly ash, slag, quartz powder, quartz sand, nano-calcium carbonate, water reducing agent, first steel fiber, and second steel fiber to the mixing device to stir and stir. After uniformity, add formula amount of water for mixing and fluidization, control mixing speed 20-48r / min, mixing time 4-8min, you can get ultra-high toughness concrete.
[0055] Others are the same as in Example 1.
[0056...
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