CN104844259A - Ceramisite-reinforced insulated aerated concrete block - Google Patents

Abstract

The invention discloses a ceramisite-reinforced insulated aerated concrete block. The ceramisite-reinforced insulated aerated concrete block is characterized by being prepared from the following raw materials in parts by weight: 30-50 parts of ceramisite, 15-30 parts of coal ashes, 16-22 parts of cement, 0.2-0.4 part of aluminite powder, 10-15 parts of quick lime, 3-5 parts of gypsum powder, 3-6 parts of polyvinyl acetate emulsion powder, 10-15 parts of ceramic clinker powder, 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 ceramsite is light in weight, good in thermal insulation property, small 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; and the aerated concrete block disclosed by the invention can reach excellent bearing capability and relatively high anti-penetrability performance and thermal insulation properties, and is good in stability, relatively low in shrinking percentage and little in slurry for building walls.

Description

A kind of haydite strengthens thermal-insulating type aerated-block

Technical field

The present invention relates to aerated-block field, is specifically that a kind of haydite strengthens thermal-insulating type aerated-block.

Background technology

The development trend of the proposition required along with building energy conservation and high stratification building, traditional materials for wall quality weight, construction inconvenience, is not suitable for Highrise buildings, and along with the raising day by day of people's living standard, the thermal requirements of people to construction wall is more and more higher.Traditional wall thermal insulating measure mainly puts various lagging material at exterior wall peripheral hardware, but this traditional heat preserving method more and more shows weak point.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.

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 heat preservation property, reduce the consumption of the energy, become the new and effective walling with heat-insulating property.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 a kind of haydite and strengthen thermal-insulating type aerated-block and preparation method thereof.

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

A kind of haydite strengthens thermal-insulating type aerated-block, is made up of the raw material of following weight part: haydite 30-50, flyash 15-30, cement 16-22, aluminium powder 0.2-0.4, unslaked lime 10-15, terra alba 3-5, polyvinyl acetate emulsion powder 3-6, ceramic ground-slag 10-15, 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;

A kind of haydite of the present invention strengthens thermal-insulating type aerated-block, 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 polyvinyl acetate emulsion powder 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, unslaked lime, cement, ceramic ground-slag 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, aerated-block of the present invention can reach excellent carrying, stronger impervious and heat-insulating property, and fire performance is good, good stability, shrinking percentage is less, build a wall few with slurry.

Specific embodiments

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

A kind of haydite strengthens thermal-insulating type aerated-block, is made up: haydite 50, flyash 27, cement 19, aluminium powder 0.4, unslaked lime 13, terra alba 4, polyvinyl acetate emulsion powder 5, ceramic ground-slag 14, calcium lignin sulphonate 0.5, iron powder 2, nano-aluminium oxide 4, carbon black 3, dehydrated alcohol 16, water are appropriate of the raw material of following weight part (kilogram);

A kind of haydite of the present invention strengthens thermal-insulating type aerated-block, 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 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 polyvinyl acetate emulsion powder 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, unslaked lime, cement, ceramic ground-slag 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): >=5.3;

Shrinkage value (mm/m) :≤0.48;

Density (level): 05;

Frost resistance (15 times, rate of loss %) :≤2.1;

Thermal conductivity (W/m.k) :≤0.12.

Claims (2)

1. a haydite strengthens thermal-insulating type aerated-block, it is characterized in that, be made up of the raw material of following weight part: haydite 30-50, flyash 15-30, cement 16-22, aluminium powder 0.2-0.4, unslaked lime 10-15, terra alba 3-5, polyvinyl acetate emulsion powder 3-6, ceramic ground-slag 10-15, 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. a kind of haydite strengthens thermal-insulating type aerated-block according to claim 1, it 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 polyvinyl acetate emulsion powder 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, unslaked lime, cement, ceramic ground-slag 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.