Concrete additive, its preparing method and concrete made thereby

A concrete and additive technology, applied in the field of concrete and additives that can enhance the impact and wear resistance of concrete, can solve the problems of reduced hydration heat of impact and wear resistance, uncompact concrete, low impact and wear resistance, etc. Improves erosion resistance, wear resistance, heat of hydration, and enhanced wear resistance

Inactive Publication Date: 2008-06-25
JIANGXI BEIRONG CIRCULAR MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the shortcomings of low impact and wear resistance, high heat of hydration, easy drying shrinkage due to high heat of hydration, uncompacted concrete, hardening and high construction difficulty in the existing concrete technology, and provide a concrete that can resist impact Additive for enhancing wear resistance, reducing heat of hydration, anti-cracking, anti-impact, preparation method of the additive, and concrete using the additive

Method used

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  • Concrete additive, its preparing method and concrete made thereby
  • Concrete additive, its preparing method and concrete made thereby
  • Concrete additive, its preparing method and concrete made thereby

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Get 700 kilograms of I grade fly ash, 300 kilograms of multi-component copolymerization macromolecule gel of vinyl acetate, vinyl ester, ethylene.

[0036] First use 300 kg of fly ash to dry, wrap and isolate the above 300 kg of multi-component copolymerized polymer gel to make a polymer gel mixed powder. Then mix together remaining 400 kilograms of fly ash and polymer gel mixing powder, stir and make it mix evenly, and make 1000 kilograms of additives that concrete is used.

[0037] In 1 cubic meter of ordinary C50 concrete, the concrete cementitious material weight is 417KG, add the above-mentioned additives of 0.4% of the concrete cementitious material weight, that is 1.67KG, and then add the amount of 1 kilogram of basalt chopped fiber per cubic meter of concrete , add 1KG of basalt chopped fiber, the fiber length is 19mm, the diameter is 13-15μm, after 28 days, the water flow rate is 35m / s, the sand content is 0.176kg / m 3 In the case of the concrete, the impact an...

Embodiment 2

[0039] Get 750 kilograms of I grade fly ash, 250 kilograms of multi-component copolymerization macromolecule gel of vinyl acetate, tertiary carbonic acid ethylene, ethylene.

[0040] First use 250 kg of fly ash to dry, wrap and isolate the above 250 kg of multi-component copolymerized polymer gel to make a polymer gel mixed powder. Then mix the remaining 500 kilograms of fly ash with the polymer gel mixed powder, stir and make it mix evenly, and prepare 1000 kilograms of additives for concrete.

[0041] In 1 cubic meter of ordinary C50 concrete, the weight of the concrete cementitious material is 417KG, add the above-mentioned additives of 0.6% of the weight of the concrete cementitious material, that is, 2.50KG, and add 1.5KG of basalt chopped fibers in addition, the fiber length is 24mm, The diameter is 13-15μm, and after 28 days, the water velocity is 35m / s and the sand content is 0.176kg / m 3 In the case of the concrete, the impact and wear resistance test was carried out....

Embodiment 3

[0046] Using IGB / T17671-1999 (ISO method), DL / T5150-2001, JC / T 421-2004 test methods, under the same conditions, the cement mortar mixed with 8% "HF" and mixed with the same strength grade The cement mortar with 0.6% of the additive prepared in Example 2 was compared in the abrasion resistance test, and the results are shown in Table 5.

[0047] Table 5 Additive wear resistance test results under standard state

[0048]

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Abstract

The invention discloses a concrete additive and its preparing method as well as a concrete using it. And it comprises fly ash and multielement copolymer gel in the weight ratio of 7 to 3 or 7.5 to 2.5, and is made by the steps of: taking multielement copolymer gel weight as reference, firstly isolating and dry-packing multielement copolymer gel with fly ash in the weight ratio of 1 to 1 to make high molecular gel mixed powder, then mixing the high molecular gel mixed powder with the remaining fly ash and blending them uniformly. And its dosage in the concrete is 0.4-0.6% of total weight of ordinary concrete gel material, and the concrete added with it can be added with short basalt fibers. And it can be singly doped or doped with short basalt fibers, applied to building shock-resistant, corrosion-resistant, air corrosion-resistant concretes, wearable road and level ground concretes, etc, and able to reinforce shock-resistant and wearable properties of concretes.

Description

technical field [0001] The invention belongs to building materials, and relates to a concrete additive, in particular to an additive capable of enhancing the anti-shock and wear resistance of concrete, a preparation method of the additive, and concrete using the additive. Background technique [0002] At present, the anti-impact and wear-resistant anti-cavitation concrete of hydraulic structures, road wear-resistant concrete, and floor wear-resistant concrete all use silica fume anti-impact and wear-resistant additives or HF anti-impact and wear-resistant additives. The former uses silica fume Replacing part of cement to enhance the compressive strength of concrete to achieve the effect of wear resistance, there is no obvious strengthening effect on concrete and ordinary cement concrete under the same heat of hydration, due to the effect of silica fume (pure silicate gel Glue), reducing the amount of cement, increasing the compressive strength of concrete, and enhancing the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B24/26C04B18/08C04B26/04
CPCY02W30/91
Inventor 陈炎平
Owner JIANGXI BEIRONG CIRCULAR MATERIALS CO LTD
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