CN104058647B

CN104058647B - A kind of stalk fibre concrete and preparation method thereof

Info

Publication number: CN104058647B
Application number: CN201410233250.XA
Authority: CN
Inventors: 王圣茂; 肖独山; 高旭; 江宇屹; 李毅
Original assignee: Anhui Hwasu Corp
Current assignee: Anhui Hwasu Corp
Priority date: 2014-05-29
Filing date: 2014-05-29
Publication date: 2016-03-23
Anticipated expiration: 2034-05-29
Also published as: CN104058647A

Abstract

A kind of stalk fibre concrete, is made up of the raw material of following weight part: sodium phosphate salt 2-3, calcium chloride 3-4, calcium hydroxide 15-20, boric acid 3-4, tolylene diisocyanate 2-4, bamboo fibers 5-7, straw 6-8, wheat straw 5-7, maize straw 5-7, polyvinylpyrrolidone 1-2, sand 260-290, etherophosphoric acid 3-4, dimethyl sulfoxide (DMSO) 4-5, water are appropriate, auxiliary agent 25-28, cement 170-190, stone 540-570, super finely ground slag 20-30; Concrete of the present invention employs plant straw fibers, and through process, not only increase concrete folding strength, this concrete also has good water-repellancy, resistance to cleavage, shock resistance simultaneously; Also solve fresh concrete cohesiveness, easily segregation that stone and sand disproportionately graded cause, shortcoming that early-age shrinkage increases.

Description

A kind of stalk fibre concrete and preparation method thereof

Technical field

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

Background technology

Concrete has abundant raw material, cheap, the simple feature of production technique, thus makes its consumption increasing.Simultaneously also to have ultimate compression strength high for concrete, good endurance, the features such as strength grade wide ranges.These features make its use range very extensive, and not only using in various civil engineering work, is exactly shipbuilding, mechanical industry, the exploitation of ocean, geothermal engineering etc., and concrete is also important material.

Along with the development of component materials of concrete, people are not only confined to ultimate compression strength to concrete performance requriements, but on the basis basing oneself upon intensity, more focus on concrete weather resistance, deformation performance, fire-and explosion-proof performance, water-impervious performance, toughness, erosion resistance, heat retaining property, health environment-friendly and to reduce costs etc. the balance and coordination of overall target.The requirement of concrete property indices is than clearer and more definite, refinement in the past and concrete.Meanwhile, the lifting of Architectural Equipment level, the continuing to bring out and promoting of novel construction process, concrete technology is adapted to different designs, construction and service requirements, develops very fast.

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, develop that performance is more excellent, function is more powerful, more adapt to novel process, the concrete of new building object just seems particularly important.

Summary of the invention

The object of the present invention is to provide a kind of stalk fibre concrete and preparation method thereof, this concrete has good water-repellancy, resistance to cleavage, shock resistance.

Technical scheme of the present invention is as follows:

A kind of stalk fibre concrete, is characterized in that being made up of the raw material of following weight part: sodium phosphate salt 2-3, calcium chloride 3-4, calcium hydroxide 15-20, boric acid 3-4, tolylene diisocyanate 2-4, bamboo fibers 5-7, straw 6-8, wheat straw 5-7, maize straw 5-7, polyvinylpyrrolidone 1-2, sand 260-290, etherophosphoric acid 3-4, dimethyl sulfoxide (DMSO) 4-5, water are appropriate, auxiliary agent 25-28, cement 170-190, stone 540-570, super finely ground slag 20-30;

Described auxiliary agent is made up of the raw material of following weight part: steel fiber 5-6, methacrylic ester 2-3, isophorone diisocyanate 2-3, bisphenol A epoxide resin 4-5, magnesium oxide 3-4, ethyl propenoate 4-5, Oleum Bupleuri 0.4-0.7, trolamine 1-2, sodium hydroxide 0.6-0.9, tripoly phosphate sodium STPP 0.4-0.6, styrylphenol polyoxyethylene ether 0.5-0.8, ammonium persulphate 0.1-0.2, Potassium Persulphate 0.1-0.2, water 9-12; Preparation method is: by water, tripoly phosphate sodium STPP, styrylphenol polyoxyethylene ether, steel fiber, methacrylic ester, ethyl propenoate, trolamine mixing, be heated to 70-80 DEG C, add ammonium persulphate reaction 20-30 minute, mix with other remaining components again, be heated to 80-90 DEG C, stirring reaction 30-40 minute, to obtain final product.

The concrete preparation method of described stalk fibre, is characterized in that comprising the following steps:

(1) bamboo fibers, straw, wheat straw, maize straw are cut into the section of 5-10cm, mix with sodium phosphate salt, boric acid, tolylene diisocyanate, polyvinylpyrrolidone, etherophosphoric acid, dimethyl sulfoxide (DMSO) again, stir 30-50 minute, mix with calcium chloride, water again, stir, obtain mixed serum;

(2) sand, cement, stone, super finely ground slag are mixed, the mixed serum obtained with (1) step and other remaining components mix, and stirring reaction 8-12 minute, then builds, and vibrates;

(3) in the wet environment of 5-25 DEG C, carry out maintenance 6-8 days after building, to obtain final product.

Beneficial effect of the present invention

Concrete of the present invention employs plant straw fibers, and through process, not only increase concrete folding strength, this concrete also has good water-repellancy, resistance to cleavage, shock resistance simultaneously; Also solve fresh concrete cohesiveness, easily segregation that stone and sand disproportionately graded cause, shortcoming that early-age shrinkage increases; By making used additives, adding concrete pressure-proof and snap-resistent intensity, adding concrete fragrance, rustless property, waterproof, seepage control performance are good, also have good water reducing ability, workability, plasticity-and can pumping effect.

Embodiment

A kind of stalk fibre concrete, is made up of the raw material of following weight part (kilogram): sodium phosphate salt 2.5, calcium chloride 3.5, calcium hydroxide 18, boric acid 3.5, tolylene diisocyanate 3, bamboo fibers 6, straw 7, wheat straw 6, maize straw 6, polyvinylpyrrolidone 1.5, sand 280, etherophosphoric acid 3.5, dimethyl sulfoxide (DMSO) 4.5, water are appropriate, auxiliary agent 27, cement 180, stone 560, super finely ground slag 25;

Described auxiliary agent is made up of the raw material of following weight part (kilogram): steel fiber 5, methacrylic ester 2.5, isophorone diisocyanate 2.5, bisphenol A epoxide resin 4.5, magnesium oxide 3.5, ethyl propenoate 4.5, Oleum Bupleuri 0.6, trolamine 1.5, sodium hydroxide 0.7, tripoly phosphate sodium STPP 0.5, styrylphenol polyoxyethylene ether 0.6, ammonium persulphate 0.1, Potassium Persulphate 0.1, water 11; Preparation method is: by water, tripoly phosphate sodium STPP, styrylphenol polyoxyethylene ether, steel fiber, methacrylic ester, ethyl propenoate, trolamine mixing, be heated to 75 DEG C, add ammonium persulphate and react 25 minutes, mix with other remaining components again, be heated to 85 DEG C, stirring reaction 35 minutes, to obtain final product.

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

(1) bamboo fibers, straw, wheat straw, maize straw are cut into the section of 7cm, mix with sodium phosphate salt, boric acid, tolylene diisocyanate, polyvinylpyrrolidone, etherophosphoric acid, dimethyl sulfoxide (DMSO) again, stir 40 minutes, mix with calcium chloride, water again, stir, obtain mixed serum;

(2) sand, cement, stone, super finely ground slag are mixed, the mixed serum obtained with (1) step and other remaining components mix, and stirring reaction 10 minutes, then builds, vibrate;

(3) in the wet environment of 12-23 DEG C, carry out maintenance 7 days after building, to obtain final product.

Experimental data:

The strength grade of concrete of this embodiment is C30, and the slump is 16cm, ultimate compression strength 39.4Pa, folding strength 16.8MPa.

Claims

1. a stalk fibre concrete, is characterized in that being made up of the raw material of following weight part: sodium phosphate salt 2-3, calcium chloride 3-4, calcium hydroxide 15-20, boric acid 3-4, tolylene diisocyanate 2-4, bamboo fibers 5-7, straw 6-8, wheat straw 5-7, maize straw 5-7, polyvinylpyrrolidone 1-2, sand 260-290, etherophosphoric acid 3-4, dimethyl sulfoxide (DMSO) 4-5, water are appropriate, auxiliary agent 25-28, cement 170-190, stone 540-570, super finely ground slag 20-30;

Described auxiliary agent is made up of the raw material of following weight part: steel fiber 5-6, methacrylic ester 2-3, isophorone diisocyanate 2-3, bisphenol A epoxide resin 4-5, magnesium oxide 3-4, ethyl propenoate 4-5, Oleum Bupleuri 0.4-0.7, trolamine 1-2, sodium hydroxide 0.6-0.9, tripoly phosphate sodium STPP 0.4-0.6, styrylphenol polyoxyethylene ether 0.5-0.8, ammonium persulphate 0.1-0.2, Potassium Persulphate 0.1-0.2, water 9-12;

The preparation method of described auxiliary agent is: by water, tripoly phosphate sodium STPP, styrylphenol polyoxyethylene ether, steel fiber, methacrylic ester, ethyl propenoate, trolamine mixing, be heated to 70-80 DEG C, add ammonium persulphate reaction 20-30 minute, mix with isophorone diisocyanate, bisphenol A epoxide resin, magnesium oxide, Oleum Bupleuri, sodium hydroxide, Potassium Persulphate again, be heated to 80-90 DEG C, stirring reaction 30-40 minute, to obtain final product.

2. the concrete preparation method of stalk fibre according to claim 1, is characterized in that comprising the following steps:

(2) sand, cement, stone, super finely ground slag are mixed, the mixed serum obtained with (1) step and auxiliary agent and calcium hydroxide mix, and stirring reaction 8-12 minute, then builds, and vibrates;