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High-cracking-resistance foamed concrete

A technology of foamed concrete and high crack resistance, applied in the field of architectural concrete, can solve problems such as low strength, poor dispersion stability, and easy cracking, and achieve the effects of improved toughness, strong interface force, and improved film-forming performance

Pending Publication Date: 2019-07-23
陈蓉蓉
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved by the present invention is to provide a highly crack-resistant foamed concrete for the problems of poor dispersion stability, low strength and easy cracking of commonly used foamed concrete

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0030] The preparation method of composite anti-crack base material comprises the following steps:

[0031](1) Take konjac powder and mix it with ethanol solution with a volume fraction of 70% according to the mass ratio of 1:12~20, add NaOH solution with a concentration of 0.5mol / L to adjust the pH to 7.8~8.3, add sodium hypochlorite with a mass fraction of 20% and mix , stirred with 400~700r / min magnetic force for 40~60min, suctioned and filtered under reduced pressure, collected the filter residue and washed 2~4 times with anhydrous ethanol, then moved to an oven and dried at 55~75°C for 4~7h to obtain the dried material. ~45°C, take the dry material and add 10% sodium alginate solution, CaCl 2 Mix, stir magnetically at 350~550r / min for 35~60min to obtain a mixed solution, raise the temperature to 55~65°C, add 10~15% additives of the mixed solution and mix, then shear and disperse at 2000~4000r / min for 10~15min, To obtain the dispersed material, take the dispersed material...

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Abstract

The invention discloses a high-cracking-resistance foamed concrete, which belongs to the technical field of building concrete. In the invention, a konjac powder solution is subjected to alkalization and sodium hypochlorite oxidization, thereby greatly improving the toughness of a blend; the foamed concrete is filled with the blend, thereby providing high density and strength, and effectively relieving external stress to lower the probability of cracking. Brewer dried grains are ground to improve the stability of internal dispersion, sodium ions are introduced to adjust the charge density of anetwork chain of unit length of a polymer network, and the stability of dispersion is improved by enhancing the bonding strength by adhesion and combining with composite anti-cracking base material. The brewer dried grains are constructed with organic-inorganic macromolecular polymer, the internal strength of concrete is improved by internal network regulation, and the external stress is further stably relieved to avoid cracking by adding polylactic acid processing material. The high-cracking-resistance foamed concrete solves the problems of poor dispersion stability, low strength and high cracking probability of foamed concrete commonly used at present.

Description

technical field [0001] The invention belongs to the technical field of building concrete, and in particular relates to a high-crack-resistant foamed concrete. Background technique [0002] Foamed concrete, also known as foamed concrete or lightweight concrete, foamed concrete is to fully foam the foaming agent mechanically through the foaming system of the foaming machine, and mix the foam and cement slurry evenly, and then pass through the foaming machine It is a new type of lightweight thermal insulation material containing a large number of closed pores formed by natural curing through the pumping system for cast-in-place construction or mold molding; foamed concrete is made by mixing foaming agent, cement, fly ash, stone powder, etc. The double-set continuous structure polymer of the organic binder contains uniform pores; the foamed concrete is used for roof insulation slope finding, ground insulation cushion, upturned beam foundation pit filling, wall pouring and other ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04C04B38/10C04B111/34
CPCC04B28/04C04B2111/343C04B2201/50C04B24/128C04B2103/302C04B24/121C04B24/285C04B24/32C04B14/06C04B24/00C04B22/12C04B24/38C04B22/124C04B24/383C04B18/18C04B22/142C04B24/124C04B24/36C04B22/16C04B24/04C04B24/045C04B38/10
Inventor 陈蓉蓉
Owner 陈蓉蓉
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