Fly ash cementing material as well as preparation method and application thereof

A technology for cementing materials and fly ash, applied in the field of concrete, can solve the problems of slow solidification reaction speed, excessive chloride ion concentration, poor strength of cementitious materials, etc. Effect

Pending Publication Date: 2021-05-28
广东能源集团科学技术研究院有限公司 +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method has a strong dependence on mineral powder, cement clinker, etc., and has high requirements on the quality of mineral powder and cement clinker, and the solidification reaction speed is slow, resulting in poor early strength of cementitious materials
[0003] Because of its high concentration of free chloride ions, high-chloride fly ash will cause the concentration of chloride ions to exceed the standard, corrode the steel bars in the concrete, and affect the safety of concrete components, whether it is used as an admixture of cement or concrete. It also limits the application of high chloride fly ash in cementitious materials

Method used

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  • Fly ash cementing material as well as preparation method and application thereof
  • Fly ash cementing material as well as preparation method and application thereof
  • Fly ash cementing material as well as preparation method and application thereof

Examples

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Embodiment 1

[0022]Example 1-4 The solid excitation agent is prepared by the method of the first embodiment of CN20161156603.6, as follows: raw materials: sodium hydroxide, soda glass (modulus 3.2, Wom 37), Sodium aluminate; method: (1) 100 g of sodium hydroxide, 10 g of aluminate sodium sodium aluminate in 890 g of sodium aluminate, mixed with 20 min, to give a mixed solution; (2) under the conditions of water bath The stirring solution reduced the system temperature to room temperature; (3) added 2G seed crystals, continued to stir 8min, showed a sharp temperature rise, and poured a mixed solution into a clean plastic plane tray, cured 3 min, to obtain a block solid The excitation agent; (4) crushing the block excitation agent, screened, taking the powder under the 100 mesh sieve is No. 1 solid excitation agent, stores for use; (5) No. 1 solid excitation is stored for 3 months, A 150 g of solid excitation, 1500 g of fly ash and 150 g of water to the mixing mixer were weighed, and the mixture w...

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Abstract

The invention discloses a fly ash cementing material as well as a preparation method and an application thereof, and relates to the technical field of concrete. The fly ash cementing material comprises the following components in parts by weight: 100 parts of fly ash, 10-30 parts of a solid activator and 0-10 parts of CaO. The invention provides a fly ash cementing material which gets rid of the constraints of mineral powder, steel slag, cement and clinker and can also be produced in places without the raw materials.

Description

Technical field[0001]The present invention relates to the field of concrete, in particular, a powder gray gum material and a preparation method thereof.Background technique[0002]The existing alkali is brade the pulverized coal gray grease material, and there are two preparation methods: (1) Available in the base of the liquid, the active ingredient in the fly ash is excited, and the gelling material is prepared. This method is because the liquid excitation agent is used, during transportation, during use, it is inconvenient, and the liquid solid response is too fast, the actual operation time left is shorter. (2) A gelatinated material is prepared using active raw materials such as mineral powder, gypsum, cement clinker, steel slag and fly ash. This approach has strong dependence on ore powder, cement clinker, high quality requirements for mineral powder and cement clinker, and the speed of solid solid response is slow, resulting in poor strength in the preoperative strength of the ...

Claims

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Application Information

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IPC IPC(8): C04B7/26C04B12/00C04B28/00
CPCC04B7/243C04B12/005C04B28/006Y02P40/10
Inventor 姚勇袁永权黎石竹李庆海汪牧赵凯
Owner 广东能源集团科学技术研究院有限公司
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