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Concrete maintenance material and preparation method thereof

A technology of concrete and gauze, which is applied in the manufacture of tools, ceramic molding machines, textiles and papermaking, etc., can solve the problems of poor early micro-crack effect, and achieve the effect of wide application range, convenient use, and control of micro-cracks

Inactive Publication Date: 2010-07-14
TONGJI UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Ordinary curing measures can only control drying shrinkage, and temperature difference shrinkage can also be controlled through external heat preservation and internal cooling measures, but it does not work for chemical shrinkage, which accounts for the largest proportion of plastic shrinkage, so it is less effective in controlling early microcracks

Method used

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  • Concrete maintenance material and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1-5

[0022] Prepare a series of concrete curing materials according to the ratio of raw materials in Table 1.

[0023] Table 1 The formula of the air-entrained concrete air-generating material

[0024]

[0025] According to Example 2 in Table 1, the material of the present invention was prepared according to the steps of the above-mentioned material preparation method, denoted as YH.

[0026] Beneficial effect

[0027] The beneficial effect of the material of the invention is tested by adopting the method of quickly testing the concrete curing effect under the environment of strong drying and blowing. The specific method is to prepare 2 parts of cement slurry according to the water-cement ratio of 0.5, and then fill the 2 parts of the slurry into 2 square trays of the same size. Roughed to a matte finish to provide greater restriction on volume changes of the cement paste. Cover the material YH of the present invention on the grout surface of one of the trays, and then use an...

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Abstract

The invention relates to a concrete maintenance material and a preparation method thereof. The maintenance material comprises gauze, polyacrylamide and liquid paraffin by the ratio of area to weight per square meter: (10g to 50g): (10g to 20g); the method comprises the following steps that: the gauze is wetted and unfolded, and then the powdery polyacrylamide is uniformly sprayed on the gauze; after the polyacrylamide is dissolved into the water in the gauze, the gauze is dried; and finally the liquid paraffin is uniformly applied on any one side of the front side and the back side of the gauze at random, and the required product is prepared. The invention has the advantages of simple manufacturing and convenient use, can be adhered on a concrete template with water, effectively improve the water retention on the surface of the concrete, scatter early shrinkage stress, and prevent microcracks that large-volume concrete is easy to have in the early period.

Description

technical field [0001] The invention relates to a curing concrete curing material and a preparation method thereof. Background technique [0002] Conservation of concrete can improve its compressive strength, wear resistance and improve its volume stability and many other properties. For large-volume concrete, it can significantly reduce the probability of microcracks. The traditional method of curing concrete is to cover it with plastic film, grass mat, sacks, etc. after the concrete has hardened, and to keep the concrete surface in a sufficient wet environment through regular watering measures, so as to provide the moisture required for the later hydration of the concrete. For concrete upper surfaces, these measures are easy to implement and work well. However, for the facade and the lower surface of the concrete, especially for the high pier with a large amount of work at present, its volume is large, the maintenance technology requirements are high, and the exposed area...

Claims

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Application Information

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IPC IPC(8): D06M15/285D06M13/02D06M101/06B28B11/24
Inventor 朱洪波吴利民汪旵生程跃胜李好新
Owner TONGJI UNIV
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