CN104291742B - A kind of coir fibre concrete and preparation method thereof - Google Patents

Abstract

A kind of coir fibre concrete, is made up of the raw material of following weight portion: NPE 2-3, coir fibre 20-24, expanded perlite 50-70, carbamide 3-4, montmorillonite 2 0-30, citric acid 5-6, sand 270-300, cement 150-160, stone 470-500, water are appropriate, auxiliary agent 20-30; Concrete heat-insulating performance of the present invention is good, by adding coir fibre, adds concrete cracking resistance, by adding montmorillonite, adds concrete density, anti-permeability performance, shock resistance; By making used additives, add concrete tension, anti-folding, comprcssive strength and density, it is possible to scentetd, mothproof anticorrosion, enhance antirust, waterproof, barrier performance, water reducing ability, plasticity and pumpable effective.

Description

A kind of coir fibre concrete and preparation method thereof

Technical field

The invention belongs to building material field, particularly to a kind of coir fibre concrete and preparation method thereof.

Background technology

Concrete has abundant raw material, cheap, the simple feature of production technology, thus makes its consumption increasing. Concrete also has the features such as comprcssive strength height, good endurance, strength grade wide ranges simultaneously. These features make it use scope very extensive, not only use in various civil engineerings, it is simply that shipbuilding industry, mechanical industry, the exploitation of ocean, geothermal engineering etc., concrete is also important material.

Development along with component materials of concrete, people are not limited solely to comprcssive strength to concrete performance requirement, but on the basis basing oneself upon intensity, more focus on concrete durability, deformation performance, fire-and explosion-proof performance, water-impervious performance, toughness, corrosion resistance, heat insulating ability, health environment-friendly and reduce balance and the coordination of cost etc. aggregative indicator. The requirement of concrete property indices than before more clearly, refinement and concrete. Meanwhile, the lifting of Architectural Equipment level, continuing to bring out and promoting of novel construction process, make concrete technology adapt to different design, construction and instructions for uses, development is quickly.

Concrete also be unable to do without the raw-material development of the reinforcement of concrete, be unable to do without the development and change of concrete engineer applied object. Therefore, performance is more excellent, function is more powerful, more adapt to new technology, the concrete of new building object is just particularly important in development.

Summary of the invention

It is an object of the invention to provide a kind of coir fibre concrete and preparation method thereof, this concrete heat-insulating performance is good, and cracking resistance is good, also has good density, anti-permeability performance, shock resistance.

Technical scheme is as follows:

A kind of coir fibre concrete, it is characterised in that be made up of the raw material of following weight portion: NPE 2-3, coir fibre 20-24, expanded perlite 50-70, carbamide 3-4, montmorillonite 2 0-30, citric acid 5-6, sand 270-300, cement 150-160, stone 470-500, water are appropriate, auxiliary agent 20-30;

Described auxiliary agent is made up of the raw material of following weight portion: epoxy acrylate 2-3, acrylic acid methyl ester. 2-3, tetramethylolmethane 1-2, acrylonitrile 2-3, allyl heptanoate 2-3, ethyl acrylate 1-2, mandarin oil 0.4-0.6, BTA 1-2, tripolycyanamide 1-2, 12-hydroxy lithium stearate 1-2, steel fibre 4-6, active calcium silicate 4-5, almond oil 1-1.7, triethylene tetramine 0.2-0.3, perfluoro octyl sulfonic acid sodium 0.6-0.9, natrium malicum 0.5-0.7, coconut oil diethanol amide 0.5-0.8, Ammonium persulfate. 0.1-0.2, potassium peroxydisulfate 0.1-0.2, water 15-18, preparation method is: by water, epoxy acrylate, acrylic acid methyl ester., tetramethylolmethane, acrylonitrile, allyl heptanoate, perfluoro octyl sulfonic acid sodium, natrium malicum, coconut oil diethanol amide, BTA, steel fibre mixing, heating is to 70-80 DEG C, add Ammonium persulfate. stirring reaction 20-30 minute, mix with other residual componentss again, heating is to 80-90 DEG C, stirring reaction 40-50 minute, to obtain final product.

The concrete preparation method of described coir fibre, it is characterised in that comprise the following steps:

(1) montmorillonite is ground to form 100-130 order granule, mix with NPE, coir fibre, carbamide, citric acid, water, stir, obtain mixed serum;

(2) by expanded perlite, sand, cement, stone mix homogeneously, the mixed serum and other residual componentss that obtain with (1st) step are mixed homogeneously, and then stirring reaction 8-12 minute is poured into a mould, vibrated;

(3) in the wet environment of 5-28 DEG C, carry out maintenance 7-9 days after building, to obtain final product.

Beneficial effects of the present invention

Concrete heat-insulating performance of the present invention is good, by adding coir fibre, adds concrete cracking resistance, by adding montmorillonite, adds concrete density, anti-permeability performance, shock resistance; By making used additives, add concrete tension, anti-folding, comprcssive strength and density, it is possible to scentetd, mothproof anticorrosion, enhance antirust, waterproof, barrier performance, water reducing ability, plasticity and pumpable effective.

Detailed description of the invention

A kind of coir fibre concrete, is made up of the raw material of following weight portion (kilogram): NPE 2.5, coir fibre 22, expanded perlite 60, carbamide 3.5, montmorillonite 25, citric acid 5.5, sand 280, cement 155, stone 480, water are appropriate, auxiliary agent 25;

Described auxiliary agent is made up of the raw material of following weight portion (kilogram): epoxy acrylate 2.5, acrylic acid methyl ester. 2.5, tetramethylolmethane 1.5, acrylonitrile 2.5, allyl heptanoate 2.5, ethyl acrylate 1.5, mandarin oil 0.5, BTA 1.5, tripolycyanamide 1.5, 12-hydroxy lithium stearate 1.5, steel fibre 5, active calcium silicate 4.5, almond oil 1.4, triethylene tetramine 0.2, perfluoro octyl sulfonic acid sodium 0.8, natrium malicum 0.6, coconut oil diethanol amide 0.6, Ammonium persulfate. 0.2, potassium peroxydisulfate 0.2, water 16, preparation method is: by water, epoxy acrylate, acrylic acid methyl ester., tetramethylolmethane, acrylonitrile, allyl heptanoate, perfluoro octyl sulfonic acid sodium, natrium malicum, coconut oil diethanol amide, BTA, steel fibre mixing, heating is to 75 DEG C, add Ammonium persulfate. stirring reaction 25 minutes, mix with other residual componentss again, heating is to 85 DEG C, stirring reaction 45 minutes, to obtain final product.

The concrete preparation method of described coir fibre, comprises the following steps:

(1) montmorillonite is ground to form 110 order granules, mix with NPE, coir fibre, carbamide, citric acid, water, stir, obtain mixed serum;

(2) by expanded perlite, sand, cement, stone mix homogeneously, the mixed serum and other residual componentss that obtain with (1st) step are mixed homogeneously, and then stirring reaction 10 minutes is poured into a mould, vibrated;

(3) in the wet environment of 5-12 DEG C, carry out maintenance 9 days after building, to obtain final product.

Experimental data:

The strength grade of concrete of this embodiment is C30, and the slump is 17cm, comprcssive strength 38.9MPa, rupture strength 16.8MPa.

Claims (2)

1. a coir fibre concrete, it is characterised in that be made up of the raw material of following weight portion: NPE 2-3, coir fibre 20-24, expanded perlite 50-70, carbamide 3-4, montmorillonite 2 0-30, citric acid 5-6, sand 270-300, cement 150-160, stone 470-500, water are appropriate, auxiliary agent 20-30;

Described auxiliary agent is made up of the raw material of following weight portion: epoxy acrylate 2-3, acrylic acid methyl ester. 2-3, tetramethylolmethane 1-2, acrylonitrile 2-3, allyl heptanoate 2-3, ethyl acrylate 1-2, mandarin oil 0.4-0.6, BTA 1-2, tripolycyanamide 1-2, 12-hydroxy lithium stearate 1-2, steel fibre 4-6, active calcium silicate 4-5, almond oil 1-1.7, triethylene tetramine 0.2-0.3, perfluoro octyl sulfonic acid sodium 0.6-0.9, natrium malicum 0.5-0.7, coconut oil diethanol amide 0.5-0.8, Ammonium persulfate. 0.1-0.2, potassium peroxydisulfate 0.1-0.2, water 15-18, the preparation method of auxiliary agent is: by water, epoxy acrylate, acrylic acid methyl ester., tetramethylolmethane, acrylonitrile, allyl heptanoate, perfluoro octyl sulfonic acid sodium, natrium malicum, coconut oil diethanol amide, BTA, steel fibre mixing, heating is to 70-80 DEG C, add Ammonium persulfate. stirring reaction 20-30 minute, mix with other residual componentss again, heating is to 80-90 DEG C, stirring reaction 40-50 minute, to obtain final product.

2. the concrete preparation method of coir fibre according to claim 1, it is characterised in that comprise the following steps:

(1) montmorillonite is ground to form 100-130 order granule, mix with NPE, coir fibre, carbamide, citric acid, water, stir, obtain mixed serum;

(2) by expanded perlite, sand, cement, stone mix homogeneously, the mixed serum and other residual componentss that obtain with (1st) step are mixed homogeneously, and then stirring reaction 8-12 minute is poured into a mould, vibrated;

(3) in the wet environment of 5-28 DEG C, carry out maintenance 7-9 days after building, to obtain final product.