CN105036792A - Novel carbon-fiber ceramsite aerated concrete block - Google Patents

Abstract

The invention discloses a novel carbon-fiber ceramsite aerated concrete block. The block is characterized by being prepared from the following raw materials by weight: 7 to 9 parts of carbon fiber, 30 to 50 parts of ceramsites, 15 to 30 parts of fly ash, 10 to 13 parts of quick lime, 15 to 20 parts of cement, 0.3 to 0.5 part of aluminum powder, 2 to 4 parts of titanium gypsum powder, 1 to 2 parts of hydroxy methyl cellulose, 8 to 10 parts of glass residue powder, 0.3 to 0.5 part of calcium lignosulfonate, 1 to 3 parts of iron powder, 3 to 5 parts of nanometer aluminium oxide, 2 to 4 parts of carbon black, 15 to 20 parts of absolute ethyl alcohol and a proper amount of water. A process method adopted in the invention solves problems of uneven distribution of the ceramsites in a slurry due to easy breaking and light weight of the ceramsites in processing process; the added carbon fiber has the advantages of improving mechanical performances of a concrete structure and structural members, and resisting a building structure from acid, alkali and salt corrosion; and the carbon-fiber ceramsite aerated concrete block provided by the invention can be extensively applied in overall maintenance of the outer side of a building structure, and a bearing structure of a low-rise building, and has high utility and significantly broad market prospects.

Description

The haydite aerated building block of a kind of novel carbon fiber

Technical field

The present invention relates to aerated-block field, is specifically the haydite aerated building block of a kind of novel carbon fiber.

Background technology

The building material many employings clay brick used in building construction before China; but recent years; for the protection to soil, reduce the usage quantity of clay brick gradually, some areas prohibit the use the policy of clay brick to release and in commission.Therefore, the building material finding a kind of instead of clay vitrified brick has become the cardinal task in building trade.The a series of building materials such as Dinas brickes, hollow masonry, cement brick all have and are used under construction.Air-entrained concrete building block also along with the visual field entering people, and relies on the feature of itself to become new lover in building trade gradually.Air-entrained concrete building block has countless small, independent, the air hole structure that is evenly distributed and forms the several functions such as high-strength light, durable insulation, sound-absorbing, waterproof, antidetonation, quick construction (compared with clay brick), workability be strong, is a kind of excellent novel wall material.

Carbon fibre material has excellent physical and mechanical property, has the bearing capacity and ductility that improve concrete structure and component, improve its stress performance in reinforcing and repairing concrete structure.Also there is splendid corrosion-resistant and weather resistance, the corrosion of acid that buildings often runs into, alkali, salt pair structure can be resisted.Haydite is a kind of artificial light aggregate, shell is hard, inside has micro-porous ceramic saccharoid, it has good heat insulation property, has excellent fire-resistance, and surface has one deck water proof to protect the glaze layer of gas, water-intake rate is low, impervious shock resistance is good, anti-freezing property and excellent in durability, has excellent physics, chemistry and hydraulic performance.Add in haydite to gas concrete and can reduce concrete unit weight, reduce flooring load, also there is the effects such as heat-insulation and heat-preservation, sound insulating and absorbing, freeze proof impervious, environmental protection, but due to the aglite that haydite is a kind of hollow, in whipping process, because the ratio of slip is great, haydite easily floats, cause skewness, form product defects.

Summary of the invention

The object of this invention is to provide haydite aerated building block of a kind of novel carbon fiber and preparation method thereof.

In order to realize object of the present invention, the present invention is by following scheme implementation:

The haydite aerated building block of a kind of novel carbon fiber, is made up of the raw material of following weight part: carbon fiber 7-9, haydite 30-50, flyash 15-30, unslaked lime 10-13, cement 15-20, aluminium powder 0.3-0.5, titanium gypsum powder 2-4, hydroxy-methyl cellulose 1-2, glass ground-slag 8-10, calcium lignin sulphonate 0.3-0.5, iron powder 1-3, nano-aluminium oxide 3-5, carbon black 2-4, dehydrated alcohol 15-20, water are appropriate;

The haydite aerated building block of a kind of novel carbon fiber of the present invention, be made up of following concrete steps:

(1) iron powder, carbon black and nano-aluminium oxide to be added in the dehydrated alcohol containing 0.5% silane resin acceptor kh-550 ultrasonic disperse even, after dry and haydite mix and be added in sintering oven, sinter under 1000-1200 ° of C 1-2 hour for subsequent use;

(2) sintering ceramsite prepared by step (1) is soaked 12-24 hour in pond, then mixing and stirring in water titanium gypsum powder and hydroxy-methyl cellulose being added to 2-3 times of weight part, be heated to 20-25 ° of C, and above-mentioned haydite stirs for subsequent use;

(3) by flyash, cement, glass ground-slag and unslaked lime mixing and stirring, the water and the calcium lignin sulphonate that add 2-3 times of weight part stir 3-5 minute, the haydite and the carbon fiber that add step (2) again continue to stir 3-4 minute, then stir 20-40 second by adding after appropriate water-dispersion aluminium powder;

(4) product of step (3) is added in cast stirrer to stir and make slurry, slurry is entered mould, mould is put into baking oven and leave standstill the 2-3 hour that gets angry, excision exceeds the part of mould, the demoulding, then be put in still and carry out vapor cure, vapor pressure is 1.1-1.3MPa, temperature is 180-190 ° of C, and the steam-cured time is 8-12 hour.

Advantage of the present invention is: the present invention utilizes carbon black and iron powder reaction to make haydite generate the little and structure that specific surface area is large in inner aperture, increase the contact area with slurry, strengthen cohesiveness, utilize the intensity of alumina modified enhancing haydite and reduce the coefficient of shrinkage, pre-wetted treatment and surface coated processing method is adopted to solve haydite breakable problem in the course of processing, the cohesiveness of further enhancing and sand-cement slurry, prevent from floating in the slurry skewness, the carbon fiber added has the bearing capacity and ductility that improve concrete structure and component, improve its stress performance.Also there is splendid corrosion-resistant and weather resistance, can resist the corrosion of acid that buildings often runs into, alkali, salt pair structure, the entirety that building block of the present invention can be widely used in outside building structure is safeguarded, and the load larrying member of low-rise building, practicality is high, and market outlook are very wide.

Specific embodiments

Below by specific examples, the present invention is described in detail.

The haydite aerated building block of a kind of novel carbon fiber, is made up of the raw material of following weight part (kilogram): carbon fiber 9, haydite 50, flyash 27, unslaked lime 12, cement 18, aluminium powder 0.5, titanium gypsum powder 4, hydroxy-methyl cellulose 2, glass ground-slag 10, calcium lignin sulphonate 0.4, iron powder 2, nano-aluminium oxide 5, carbon black 4, dehydrated alcohol 15, water are appropriate;

The haydite aerated building block of a kind of novel carbon fiber of the present invention, be made up of following concrete steps:

(1) iron powder, carbon black and nano-aluminium oxide to be added in the dehydrated alcohol containing 0.5% silane resin acceptor kh-550 ultrasonic disperse even, after dry and haydite mixing be added in sintering oven, under 1100 ° of C, sintering 2 hours is for subsequent use;

(2) sintering ceramsite prepared by step (1) is soaked 24 hours in pond, then mixing and stirring in water titanium gypsum powder and hydroxy-methyl cellulose being added to 2 times of weight parts, be heated to 25 ° of C, and above-mentioned haydite stirs for subsequent use;

(3) by flyash, cement, glass ground-slag and unslaked lime mixing and stirring, the water and the calcium lignin sulphonate that add 3 times of weight parts stir 5 minutes, the haydite and the carbon fiber that add step (2) again continue stirring 4 minutes, then add stirring 40 seconds by after appropriate water-dispersion aluminium powder;

(4) product of step (3) is added in cast stirrer to stir and make slurry, slurry is entered mould, mould is put into baking oven leave standstill get angry 3 hours, excision exceeds the part of mould, the demoulding, then be put in still and carry out vapor cure, vapor pressure is 1.3MPa, temperature is 190 ° of C, and the steam-cured time is 8 hours.

In the present embodiment, the performance index of aerated-block are as follows:

Ultimate compression strength (MPa): >=5.2;

Shrinkage value (mm/m) :≤0.38;

Density (level): 05;

Frost resistance (15 times, rate of loss %) :≤2;

Thermal conductivity (W/m.k) :≤0.13.

Claims (2)

1. the haydite aerated building block of novel carbon fiber, it is characterized in that, be made up of the raw material of following weight part: carbon fiber 7-9, haydite 30-50, flyash 15-30, unslaked lime 10-13, cement 15-20, aluminium powder 0.3-0.5, titanium gypsum powder 2-4, hydroxy-methyl cellulose 1-2, glass ground-slag 8-10, calcium lignin sulphonate 0.3-0.5, iron powder 1-3, nano-aluminium oxide 3-5, carbon black 2-4, dehydrated alcohol 15-20, water are appropriate.

2. the haydite aerated building block of a kind of novel carbon fiber according to claim 1, is characterized in that, is made up of following concrete steps:

(1) iron powder, carbon black and nano-aluminium oxide to be added in the dehydrated alcohol containing 0.5% silane resin acceptor kh-550 ultrasonic disperse even, after dry and haydite mix and be added in sintering oven, sinter under 1000-1200 ° of C 1-2 hour for subsequent use;

(2) sintering ceramsite prepared by step (1) is soaked 12-24 hour in pond, then mixing and stirring in water titanium gypsum powder and hydroxy-methyl cellulose being added to 2-3 times of weight part, be heated to 20-25 ° of C, and above-mentioned haydite stirs for subsequent use;

(3) by flyash, cement, glass ground-slag and unslaked lime mixing and stirring, the water and the calcium lignin sulphonate that add 2-3 times of weight part stir 3-5 minute, the haydite and the carbon fiber that add step (2) again continue to stir 3-4 minute, then stir 20-40 second by adding after appropriate water-dispersion aluminium powder;

(4) product of step (3) is added in cast stirrer to stir and make slurry, slurry is entered mould, mould is put into baking oven and leave standstill the 2-3 hour that gets angry, excision exceeds the part of mould, the demoulding, then be put in still and carry out vapor cure, vapor pressure is 1.1-1.3MPa, temperature is 180-190 ° of C, and the steam-cured time is 8-12 hour.