Double-ingredient negative temperature fast repair mortar as well as preparation and application methods thereof

A two-component repair mortar technology, applied in the field of concrete structures, can solve the problems of freezing and non-workability of the mixture, and achieve the effect of good fluidity and good workability

Active Publication Date: 2018-09-04
优固达(北京)材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The temperature in winter in the north is low, the temperature of the raw materials used in the rapid road repair project is negative, and t

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] A two-component negative temperature rapid repair mortar, the raw materials it contains and the mass parts of each raw material are:

[0039] Material A is a mixture of magnesia, borax, dihydrogen phosphate and fly ash, and the mass parts of each raw material are:

[0040] 45 parts of magnesia;

[0041] 25 parts of borax;

[0042] 2 parts of dihydrogen phosphate;

[0043] 10 parts of fly ash;

[0044] 5 parts of diatomaceous earth;

[0045] Material B is a mixed solution of antifreeze and water, and the mass parts of each raw material are:

[0046] 0.5 parts of antifreeze;

[0047] 4 parts of water;

[0048] Wherein, according to mass ratio, material A: material B=87:4.5.

[0049] The magnesia is fused magnesia, which is sintered and ground at a high temperature above 1500° C., and has a magnesium oxide content of ≥95%.

[0050] The dihydrogen phosphate is ammonium dihydrogen phosphate.

[0051] Described antifreeze is ethylene glycol.

[0052] A preparation m...

Embodiment 2

[0061] A two-component negative temperature rapid repair mortar, the raw materials it contains and the mass parts of each raw material are:

[0062] Material A is a mixture of magnesia, borax, dihydrogen phosphate and fly ash, and the mass parts of each raw material are:

[0063] 50 parts of magnesia;

[0064] 30 parts of borax;

[0065] 3 parts of dihydrogen phosphate;

[0066] 12.5 parts of fly ash;

[0067] 4 parts diatomaceous earth;

[0068] Material B is a mixed solution of antifreeze and water, and the mass parts of each raw material are:

[0069] 0.75 parts of antifreeze;

[0070] 5 parts of water;

[0071] Wherein, by mass ratio, material A: material B=99.5:5.75.

[0072] The magnesia is a mixture of fused magnesia and dead-burned magnesia (mass ratio: 1:1), which is sintered and ground at a temperature above 1500° C., and has a magnesium oxide content of ≥95%.

[0073] Described dihydrogen phosphate is potassium dihydrogen phosphate.

[0074] The antifreeze ...

Embodiment 3

[0084] A two-component negative temperature rapid repair mortar, the raw materials it contains and the mass parts of each raw material are:

[0085] Material A is a mixture of magnesia, borax, dihydrogen phosphate and fly ash, and the mass parts of each raw material are:

[0086] 55 parts of magnesia;

[0087] 35 parts of borax;

[0088] 4 parts of dihydrogen phosphate;

[0089] 15 parts of fly ash;

[0090] 3 parts diatomaceous earth;

[0091] Material B is a mixed solution of antifreeze and water, and the mass parts of each raw material are:

[0092] 1 part antifreeze;

[0093] 6 parts of water;

[0094] Wherein, by mass ratio, A material: B material = 112:7.

[0095] The magnesia is fused magnesia, which is sintered and ground at a high temperature above 1500° C., and has a magnesium oxide content of ≥95%.

[0096] Described dihydrogen phosphate is calcium dihydrogen phosphate.

[0097] The antifreeze is a mixture of ethylene glycol and ethanol (1:1 by volume).

...

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Abstract

The invention relates to double-ingredient negative temperature fast repair mortar and preparation as well as preparation and application thereof, and belongs to the field of a concrete building. Thedouble-ingredient negative temperature fast repair mortar is prepared from the following raw materials in parts by mass: an ingredient A (40 to 60 parts of magnesia, 20 to 40 parts of borax, 2 to 4 parts of dihydric phosphate, 10 to 15 parts of flyash and 3 to 5 parts of kieselguhr) and an ingredient B (0.5 to 1 part of anti-freezing agents and 4 to 6 parts of water). According to the preparationmethod, the raw materials are subjected to ball milling and mixing; the ingredient A and the ingredient B are respectively prepared; in the use process, the ingredient A and the ingredient B are mixed; construction and hardening can be performed at a temperature being -20 DEG C or above. The double-ingredient negative temperature fast repair mortar can obtain higher pressure-resistant and folding-resistant intensity and shorter condensing time, and can be prepared and used under the negative temperature condition.

Description

technical field [0001] The invention relates to the field of concrete structures such as roads, bridges, buildings, etc., in particular to a two-component negative temperature rapid repair mortar and a preparation and use method thereof. Background technique [0002] The temperature in winter in the north is low, the temperature of the raw materials used in the rapid road repair project is negative, and the temperature of the mixing water is also very low, which is likely to cause freezing during the mixing process and the mixture has no workability. At the same time, considering that the amount of repair work is relatively small, the heat of the repair material itself will be quickly transferred to the road, and the temperature will drop rapidly, so that the construction process and the hardening process of the repair material are at negative temperatures. Therefore, it should be ensured that the repair materials are mixed, There is enough liquid moisture inside during the ...

Claims

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Application Information

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IPC IPC(8): C04B28/34
CPCC04B28/34C04B2201/50C04B22/066C04B22/0013C04B22/16C04B18/08C04B14/08C04B24/02C04B22/002
Inventor 戴民裴荔樵李晓彤
Owner 优固达(北京)材料科技有限公司
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