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Antifreeze concrete

A technology of concrete and bentonite, which is applied in the field of construction and civil engineering, can solve the problems of further improvement in frost resistance and complex admixture components, and achieve the effects of reducing the average bubble interval coefficient, good engineering quality, and reducing the water-binder ratio

Inactive Publication Date: 2017-10-24
杨小英
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, the reports and applications of frost-resistant concrete all have shortcomings such as complex admixture components and further improvement of frost-resistant performance.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] A concrete antifreeze water reducer, consisting of the following components in percentage by weight:

[0049] Microcrystalline Muscovite Powder 45%

[0050] Ethylene bis stearamide 22%

[0051] Tripitate Saponin 17%

[0052] Bentonite 8%

[0053] Naphthalene Sulfonate 8%.

[0054] The preparation method is as follows: weigh the components in the mass ratio, firstly mix the microcrystalline muscovite powder and ethylene bisstearamide evenly, then add water with about 20% of the mass of the above two components, and heat to 90°C , kept for 1h, after natural cooling, then add the rest of the components, stir evenly, after drying, the antifreeze superplasticizer is obtained.

[0055] When applying, prepare concrete according to the following mass ratio components:

[0056] Cement 25%

[0057] Aggregate 60%

[0058] Fly Ash 3%

[0059] Slag fine powder 3%

[0060] Antifreeze superplasticizer 2%

[0061] water 7%

[0062] Wherein, the aggregate includes river sand ...

Embodiment 2

[0065] A concrete antifreeze water reducer, consisting of the following components in percentage by weight:

[0066] Microcrystalline Muscovite Powder 45%

[0067] Ethylene bis stearamide 22%

[0068] Tripitate Saponin 15%

[0069] Bentonite 7%

[0070] Naphthalenesulfonate 5%

[0071] Oyster Shell Powder 6%.

[0072] The preparation method is as follows: weigh the components in the mass ratio, firstly mix the microcrystalline muscovite powder and ethylene bisstearamide evenly, then add water with about 20% of the mass of the above two components, and heat to 90°C , kept for 1h, after natural cooling, then add the rest of the components, stir evenly, after drying, the antifreeze superplasticizer is obtained.

[0073] When applying, prepare concrete according to the following mass ratio components:

[0074] Cement 25%

[0075] Aggregate 60%

[0076] Fly Ash 3%

[0077] Slag fine powder 3%

[0078] Antifreeze superplasticizer 2%

[0079] water 7%

[0080] Wherein, the ...

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Abstract

The invention discloses an antifreeze concrete, and belongs to the technical field of architecture construction. The antifreeze concrete comprises the components of cement, aggregate, fly ash, superfine slag powder, antifreeze water reducing agent and water, wherein the antifreeze water reducing agent is composed of, by weight, 40-50% of microcrystalline muscovite powder, 15-25% of ethylene bi-stearamide, 10-20% of triterpenoid saponins, 5-10% of bentonite, and 5-10% of naphthalene sulfonate. When the antifreeze water reducing agent is added to the concrete, on the one hand the compactness of the concrete can be greatly improved, on the other hand the average air void spacing coefficient and water binder ratio can be significantly reduced, the average air void spacing coefficient can be reduced to 20 micro meters or below, the water binder ratio can be reduced to 0.20 or below, in the meantime the strength of the concrete is also greatly improved, and the strength can reach C90 or above, so that excellent freeze resistance performance can be obtained; the antifreeze concrete is particularly suitable for use in the cold north or underground, and good engineering quality is guaranteed.

Description

technical field [0001] The invention relates to the technical field of architecture and civil engineering, in particular to a frost-resistant concrete. Background technique [0002] In the cold northern regions, the temperature in winter is very low, often reaching minus twenty degrees Celsius, or even minus forty or fifty degrees Celsius. In such places, higher requirements are put forward for the antifreeze performance of construction projects, especially for roads and bridges. On the one hand, the concrete needs to withstand ultra-low temperature for a long time, and on the other hand, it must withstand the test of repeated freezing and thawing. [0003] In order to meet this requirement, the industry has proposed the concept and requirements of frost-resistant concrete. Frost-resistant concrete means that the structural design requires concrete to have the durability of long-term resistance to freeze-thaw cycles, that is, to meet the frost-resistant level specified in th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B24/20C04B28/00C04B103/30C04B103/60C04B111/20C04B111/76
CPCC04B40/0039C04B28/00C04B2103/302C04B2103/601C04B2111/29C04B2111/76C04B2201/52C04B14/20C04B24/10C04B24/20C04B14/104C04B24/124C04B14/28C04B14/068C04B18/08C04B18/141
Inventor 杨小英
Owner 杨小英
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