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High-performance concrete corrosion-resistant anti-cracking agent and producing method thereof

A high-performance concrete and anti-cracking agent technology, applied in the field of concrete, can solve problems such as insufficient uniformity, inability to exert the comprehensive interactive superposition effect of admixtures, and affect concrete performance indicators and durability effects, so as to achieve sulfate corrosion resistance and Good anti-chloride ion penetration performance

Active Publication Date: 2008-04-30
浙江合力海科新材料股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are still many problems in the process of use, such as insufficient uniformity, increased labor intensity, increased pollution sources and other defects. More importantly, the comprehensive interactive superposition effect of admixtures cannot be exerted, which affects the concrete performance indicators and durability effects.
[0004] In addition, the traditional mixing and grinding process for manufacturing concrete, due to the great difference in the grindability of various materials, can not achieve the optimization of formula design in order to obtain a reasonable particle gradation

Method used

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  • High-performance concrete corrosion-resistant anti-cracking agent and producing method thereof
  • High-performance concrete corrosion-resistant anti-cracking agent and producing method thereof
  • High-performance concrete corrosion-resistant anti-cracking agent and producing method thereof

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0080] Example 1: Production of Type A High Performance Concrete Anti-corrosion and Anti-cracking Agent

[0081] The formula is as follows:

[0082] Raw material and grinding aid name

[0083] The blocky slag, zeolite, metakaolin, etc. are mixed according to the formula and electronically weighed at 15t / h, and first enter the vertical mill for drying and grinding to 200m 2 / Kg, and then enter the ball mill, while the fly ash and silica fume are directly mixed with the powder from the vertical mill to 580m 2 / Kg, during the grinding process, atomize triethanolamine and dispersant 0.4t / h through special spray equipment and spray them into the ball mill, so that the various components are evenly mixed, and then discharged into the finished product warehouse, that is, A type high-performance concrete corrosion and crack resistance agent.

example 2

[0084] Example 2: Production of B-type high-performance concrete corrosion and crack resistance agent

[0085] B formula is as follows: example 1 formula 90% adds 10% polyoxyethylene shrinkage reducing agent.

[0086] The blocky slag, zeolite, metakaolin, etc. are mixed according to the formula and electronically weighed at 13.5t / h, and firstly enter the vertical mill for drying and grinding to 200m 2 / Kg, and then enter the ball mill, meanwhile, the fly ash and silica fume are mixed and ground to 590m 2 / Kg, during the grinding process, atomize triethanolamine, dispersant 0.4t / h and polyoxyethylene shrinkage reducer 1.9t / h through special spray equipment and spray them into the ball mill to make the various components evenly mixed Finally, the material is discharged into the finished product warehouse, and the B-type high-performance concrete anti-corrosion and anti-cracking agent is made.

example 3

[0087] Example 3: Production of C-type high-performance concrete anti-corrosion and anti-cracking agent

[0088] C formula is as follows: Example 1 formula 70% plus 18% anhydrite + 12% aluminum clinker.

[0089] The blocky slag, zeolite, metakaolin, anhydrite, aluminum clinker, etc. are mixed according to the formula and electronically weighed at 15t / h, and first enter the vertical mill for drying and grinding to 200m 2 / Kg, and then enter the ball mill. At the same time, the fly ash and silica fume are mixed and ground to 560m2 by electronically weighing 4.4t / h directly into the ball mill and the powder from the vertical mill. 2 / Kg, during the mixing milling process, atomize triethanolamine and dispersant 0.4t / h through special spray equipment and spray them into the ball mill, so that the various components are evenly mixed, and then discharged into the finished product warehouse, that is, C-type high-performance concrete anti-corrosion and anti-cracking agent.

[0090] ...

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Abstract

A high-property concrete corrosion-crack resistant agent is prepared from slag, coal ash, zeolite, active siliceous material, grinding aid, reduction nanometer substrate, and composite expansion component. And the preparation comprises that first feeds, dries and grinds slag, zeolite, active siliceous material, and composite expansion component or the like in an upright furnace to demanded specific surface area, grinds in a ball mill, mixes and grinds the composite mineral additive that directly prepared from powder coal ash, active siliceous material or the like at the ball mill and upright mill, to demanded specific surface area, and sprays grinding aid and reduction nanometer substrate via a special device to be atomized and injected into a pulverizer, to uniformly mix all components, to obtain product. Each technical index of the prepared high-property concrete corrosion-crack resistant agent is at least not lower than national standard. The invention has advanced production art, continuous production support, better corrosion-crack property, and simple operation.

Description

technical field [0001] The invention relates to concrete, in particular to a special concrete admixture for durable high-performance concrete, which is used to improve the construction performance, corrosion resistance and crack resistance of concrete, so as to improve the durability of concrete in harsh environments. technical background [0002] Our country is in a period of rapid development. Large-scale construction makes the annual concrete consumption amount to more than one billion cubic meters. Many national key infrastructure projects are under construction, such as cross-river and sea-crossing bridges, high-speed railways, water conservancy projects, water diversion, reclamation, sewage Large-scale projects such as treatment plants have high requirements for their safety and durability. For example, the design life of the Hangzhou Bay Bridge is 100 years. The concrete structure of such projects is subject to repeated loads and The effects of temperature changes, fr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B18/14C04B18/08C04B111/20
CPCC04B2111/2038C04B28/165C04B2111/343Y02W30/91C04B7/32C04B14/047C04B14/106C04B18/08C04B18/141C04B18/146C04B20/008C04B24/122C04B24/32C04B2103/408C04B2103/52C04B2103/58C04B2103/61
Inventor 丁小富董兰女丁春富程占莲
Owner 浙江合力海科新材料股份有限公司
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