CN104844260A - High-strength ceramisite-reinforced aerated concrete block - Google Patents

Abstract

The invention discloses a high-strength ceramisite-reinforced aerated concrete block. The high-strength ceramisite-reinforced aerated concrete block is characterized by being prepared from the following raw materials in parts by weight: 10-15 parts of quick lime, 30-50 parts of ceramisite, 15-30 parts of coal ashes, 16-22 parts of cement, 0.4-0.5 part of aluminite powder, 2-4 parts of gypsum powder, 8-12 parts of bauxite, 0.3-0.5 part of hydroxypropyl methyl cellulose sodium, 0.3-0.5 part of calcium lignosulphonate, 1-3 parts of iron powder, 3-5 parts of nano-aluminium oxide, 2-4 parts of carbon black, 15-20 parts of absolute ethyl alcohol and a proper amount of water. The added sintered ceramisite is light in weight, good in thermal insulation property, low in air shrinkage and excellent in humidity resistance; by virtue of the technique, the problems that the ceramisite is easy to crush and light in weight in the processing process, and is uneven in distribution in slurry are solved; the aluminum content of the aerated concrete block is increased by the added bauxite; and the fire resistance, the creep properties and the heat stability of the concrete block are improved.

Description

The reinforced aerated building block of a kind of high-strength ceramsite

Technical field

The present invention relates to aerated-block field, is specifically the reinforced aerated building block of a kind of high-strength ceramsite.

Background technology

Traditional materials for wall weight capacity is inadequate, the growth requirement of Highrise buildings can not be adapted to, common cement wall quality of materials weight, add the weight of building itself undoubtedly, construction is inconvenience also, along with the proposition of energy-saving and emission-reduction, green building slogan, traditional materials for wall has been not suitable for the demand of current building.Gas concrete is a kind of New Energy Saving Wall Materials with polymolecularity vesicular structure, compared with traditional materials for wall, there is high-strength light, heat insulating, sound absorption sound insulation, antidetonation fire prevention, the advantage such as simple of constructing, the effect that joint soil, profit are useless, energy-conservation can be played.Because gas concrete has above advantage, it is made to be obtained for good application and development at home and abroad.But the gas concrete produced at present has intensity compared with the shortcoming such as low, unit weight is large, drying shrinkage is large, intensity is low.

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.In order to improve the shortcoming of above-mentioned gas concrete, some producers add haydite in gas concrete, not only increase concrete skeleton structure, and effectively can keep the advantage of gas concrete, overcome its common quality defect, give full play of high-strength characteristic, reduce the consumption of the energy.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, on the other hand, because the self-strength of haydite aggregate is lower, easily produce breakage in whipping process, this not only adds self water-intake rate of haydite, but also reduce product heat-insulating property.Therefore, must process haydite, improve the producing and manufacturing technique of aerated-block.

Summary of the invention

The object of this invention is to provide reinforced aerated building block of a kind of high-strength ceramsite and preparation method thereof.

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

The reinforced aerated building block of a kind of high-strength ceramsite, is made up of the raw material of following weight part: unslaked lime 10-15, haydite 30-50, flyash 15-30, cement 16-22, aluminium powder 0.4-0.5, terra alba 2-4, bauxitic clay 8-12, Vltra tears sodium 0.3-0.5, 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 reinforced aerated building block of a kind of high-strength ceramsite 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 terra alba and Vltra tears sodium are added to mixing and stirring in the water of 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, bauxitic clay 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 adding step (2) again continues to stir 3-4 minute, then stirs 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 bauxitic clay added adds the aluminum content of aerated-block, improve the resistivity against fire of building block, low creep properties and thermostability.

Specific embodiments

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

The reinforced aerated building block of a kind of high-strength ceramsite, is made up of the raw material of following weight part (kilogram): unslaked lime 13, haydite 50, flyash 25, cement 19, aluminium powder 0.4, terra alba 2, bauxitic clay 9, Vltra tears sodium 0.4, calcium lignin sulphonate 0.5, iron powder 2, nano-aluminium oxide 4, carbon black 4, dehydrated alcohol 16, water are appropriate;

The reinforced aerated building block of a kind of high-strength ceramsite 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 terra alba and Vltra tears sodium are added to mixing and stirring in the water of 2 times of weight parts, be heated to 25 ° of C, and above-mentioned haydite stirs for subsequent use;

(3) by flyash, cement, bauxitic clay 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 adding step (2) again continues stirring 4 minutes, then adds 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): >=5.6;

Shrinkage value (mm/m) :≤0.34;

Density (level): 06;

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

Thermal conductivity (W/m.k) :≤0.15.

Claims (2)

1. the reinforced aerated building block of high-strength ceramsite, it is characterized in that, be made up of the raw material of following weight part: unslaked lime 10-15, haydite 30-50, flyash 15-30, cement 16-22, aluminium powder 0.4-0.5, terra alba 2-4, bauxitic clay 8-12, Vltra tears sodium 0.3-0.5, 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 reinforced aerated building block of a kind of high-strength ceramsite 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 terra alba and Vltra tears sodium are added to mixing and stirring in the water of 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, bauxitic clay 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 adding step (2) again continues to stir 3-4 minute, then stirs 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.