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Durability reinforced material of concrete as well as preparation method and application thereof

A technology to enhance materials and durability, applied in the direction of climate sustainability, sustainable waste treatment, solid waste management, etc., can solve the problems of wasting materials, increasing the cost of concrete, etc., and achieve the ability to maintain fluidity loss and resist sulfate erosion Improvement, the effect of improving the ability to resist chloride ion penetration

Inactive Publication Date: 2013-01-16
SHANGHAI CONSTR BUILDING MATERIALS TECH GRP CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Its main drawback is waste of material and increase the cost of concrete

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] The components and parts by weight (Kg) of the concrete durability enhancing material in this example are as follows: original ultrafine fly ash microbeads, 100 parts; water reducing agent, 9 parts; ultrafine slag powder, 30 parts; Air agent, 0.3 parts; activator, 75 parts; retarder, 1.25 parts.

[0030] The method for preparing the above-mentioned concrete durability enhancing material based on undisturbed ultrafine fly ash microbeads comprises the following steps:

[0031] (1) Prepare materials according to the above components and content (Kg):

[0032] (2) Put the undisturbed ultra-fine fly ash microbeads and water reducing agent into the dry powder mixer for mechanical mixing. The mixing time is 2 minutes to obtain the preliminary mixture;

[0033] (3) Then add ultra-fine slag powder, air-entraining agent, activator and retarder in sequence, and mix evenly. The mechanical mixing time is 5 minutes. After the mixing is completed, the concrete durability reinforcing ...

Embodiment 2

[0036] The components and parts by weight (Kg) of the concrete durability enhancing material in this example are as follows: original ultrafine fly ash microbeads, 100 parts; water reducing agent, 8 parts; ultrafine slag powder, 60 parts; Air agent, 0.1 parts; activator, 70 parts; retarder, 1.25 parts.

[0037] The method for preparing the above-mentioned concrete durability enhancing material based on undisturbed ultrafine fly ash microbeads comprises the following steps:

[0038] (1) Prepare materials according to the above components and content (Kg):

[0039] (2) Put the undisturbed ultra-fine fly ash microbeads and water reducing agent into the dry powder mixer for mechanical mixing. The mixing time is 5 minutes (min) to obtain the preliminary mixture;

[0040] (3) Then add ultra-fine slag powder, air-entraining agent, activator and retarder in sequence, and mix evenly. The mechanical mixing time is 7 minutes (min). After the mixing is completed, the concrete durability ...

Embodiment 3

[0043] This embodiment is based on the preparation method of the concrete durability enhancing material of the original ultrafine fly ash microbeads, the method comprises the following steps:

[0044] (1) Prepare materials according to the following components and content (Kg):

[0045] Undisturbed ultrafine fly ash microbeads 100

[0046] Naphthalene superplasticizer 7

[0047] Superfine slag powder 60

[0048] Sodium lauryl sulfate 0.04

[0049] Sodium dodecylbenzenesulfonate 0.09

[0050] Agglomerated silica fume 40

[0051] Trisodium citrate 0.4

[0052] Sodium gluconate 0.2

[0053] (2) Put the original ultrafine fly ash beads and water reducer into the dry powder mixer for mechanical mixing for 2-5 minutes;

[0054] (3) Add ultra-fine slag powder, air-entraining agent, activator, and retarder in sequence, and mix evenly. The total mechanical mixing time is 5-7 minutes, and the concrete durability enhancing material is obtained.

[0055] Adding concrete durability...

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Abstract

The invention relates to a durability reinforced material of concrete as well as a preparation method and application thereof. The reinforced material comprises the following components in parts by weight: 100 parts of original ultra-pulverized fly ash beads, 6-9 parts of water reducing agent, 30-80 parts of ultrafine slag powder, 0.075-0.3 part of air entraining agent, 55-75 parts of excitant and 0.37-1.25 parts of retarding agent. The production method of the durability reinforced material comprises the following steps of: firstly, mixing the original ultra-pulverized fly ash beads with the water reducing agent; and secondly, mechanically mixing the mixture with other components. According to the application of the durability reinforced material, the durability reinforced material of the concrete is doped in cement or cementitious materials, wherein the doping amount of the durability reinforced material of the concrete is 5.0-20.0 percent by weight of the total weight of the cement or cementitious materials. According to the durability reinforced material disclosed by the invention, the capability of the cement of resisting the erosiveness of sulphate can be improved 7-8 times, the capability of the cement of resisting the penetrability of chloride ions can be improved by over 5 times and the service life of a concrete structure is prolonged by 4-5 times.

Description

technical field [0001] The invention relates to building materials, in particular to a concrete durability enhancing material and its preparation method and application. Background technique [0002] The durability of concrete means that the structure can guarantee its safety and use in actual use conditions under normal maintenance conditions within the design service life, and can resist various destructive factors without spending a lot of money on reinforcement. Mainly manifested in impermeability, frost resistance, water resistance, chemical corrosion resistance and other properties. [0003] Due to the relative lag in the research on the durability of reinforced concrete structures, resulting in insufficient structural durability and engineering accidents or increased maintenance costs. According to data, the loss of industrial plants in the former Soviet Union due to durability damage accounted for 16% of its fixed assets; 8 US dollars, the annual maintenance cost d...

Claims

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Application Information

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IPC IPC(8): C04B18/30C04B22/14C04B24/16
CPCY02W30/91
Inventor 吴德龙冯波卞成辉陈建大吴慧华
Owner SHANGHAI CONSTR BUILDING MATERIALS TECH GRP CO LTD
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