CN105367119A - Autoclaved aerated concrete block with high shock strength and manufacture method thereof - Google Patents
Autoclaved aerated concrete block with high shock strength and manufacture method thereof Download PDFInfo
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- CN105367119A CN105367119A CN201510754588.4A CN201510754588A CN105367119A CN 105367119 A CN105367119 A CN 105367119A CN 201510754588 A CN201510754588 A CN 201510754588A CN 105367119 A CN105367119 A CN 105367119A
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Abstract
The invention discloses an autoclaved aerated concrete block with high shock strength. Dissociated hydroxyl in cellulose is enclosed by performing acetylation reaction on tea leaf straw fiber, and thus the hydrophobic performance and the heat stability of the material are improved; and then by cooperating with a physical modification method and adding other effective compositions, the durability and the dispersibility of fiber in autoclaved aerated concrete are improved. Added nanometer boron fiber increases the strength, the apparent density and the heat-conduction efficiency of the block, and added building garbage solves the environment pollution problem, replaces a part of cement, reduces production cost, and realizes the theme of saving energy and protecting environment, and changing waste into valuables. The aerated building block is good in shock resistance, possesses the shock resistance up to 9 grade or more, also possesses the advantages of heat resistance, good warm-keeping heat-insulation property, resistance to ageing, seepage prevention, resistance to water, and the like, and is wide in application prospect.
Description
Technical field
The present invention relates to aerated-block technical field, be specifically related to high autoclave aerated concrete building block of a kind of shock strength and preparation method thereof.
Background technology
As one of the important kind of novel wall material, autoclave aerated concrete building block has the many merits such as good effect of heat insulation, fire resistance are good, sound insulation, light weight, environmental protection compared with traditional clay vitrified brick.But, air-entrained concrete building block cubic deformation coefficient is bigger than normal, low strength, water-intake rate are large, and when building into body of wall by laying bricks or stones, easily there is crack in body of wall, coat of plaster easily produces big area be full of cracks, hollowing and obscission, show obvious fragility, hinder further application and the popularization of autoclave aerated concrete building block to a certain extent.Fiber is just widely used in traditional normal concrete goods as a kind of good cement matrix strongthener from 20th century, and its correlation theory have also been obtained comparatively sufficient and deep research.But because autoclave aerated concrete building block is in industrialization production process, general employing steel wire carries out excision forming to the gas concrete after initial set, mix too much fiber to affect to some extent the cutting of gas concrete, fiber effect in steam-pressing aero-concrete is made not to be remarkable especially, hinder its range of application in autoclave aerated concrete building block, also have a strong impact on the product quality and performances of autoclave aerated concrete building block.
Summary of the invention
Object of the present invention is just to provide high autoclave aerated concrete building block of a kind of shock strength and preparation method thereof, to overcome the deficiencies in the prior art.
The object of the present invention is achieved like this:
The autoclave aerated concrete building block that a kind of shock strength is high, it is characterized in that, be made up of the raw material of following weight part: mullite powder 50-52, building waste 30-31, cement 4-6, aluminium powder cream 0.08-0.1, carboxyl end of the liquid acrylonitrile-butadiene rubber 5-7, polyoxyethylene glycol 4-5, diacetyl oxide 45-48, tealeaves fiber 6-8, nanometer boron fibre 3-5, Oleum Cocois 3-4, nanometer sulfuric acid silicon 2-4, cellulose acetate 1.2-1.6, aluminium hydroxide 0.3-0.5, silicon carbide 0.6-0.8, suitable quantity of water.
The preparation method of the autoclave aerated concrete building block that described a kind of shock strength is high, is characterized in that comprising the following steps:
(1) tealeaves fiber is put into baking oven in 105 DEG C of dry 1-2 hour, put into retort with pre-steaming 20-40 minute simultaneously, add diacetyl oxide, nanometer sulfuric acid silicon stirring and evenly mixing leaves standstill 3-5 hour, then 100-140 DEG C of reaction 2-3 hour is heated to, dry to neutral with clear water rinsing, spray vaporific Oleum Cocois dry;
(2) mullite powder, building waste 5-8% hydrochloric acid soln are soaked 3-4 hour, washing, to neutral, calcines 4-5 hour at 650-750 DEG C, is cooled to 120-130 DEG C and adds carboxyl end of the liquid acrylonitrile-butadiene rubber, cellulose acetate grinding 30-50 minute;
(3) dropped in stirrer by step (2) material, add water stirring pulping, adds step (1) material, nanometer boron fibre stirs 2min, add cement mixing 1min, then add aluminium powder cream and other remaining components and stir 30s and obtain slurry, and ratio of water to material is 0.53;
(4) slurry that step (3) is obtained is entered mould, leaving standstill gets angry just supports 2-4 hour, and excision exceeds mould part, and reactor is put in the demoulding, and control temperature 150-170 DEG C is carried out high-temperature steam curing 8-12 hour, discharging.
The present invention has following beneficial effect: the present invention encloses hydroxyl free in Mierocrystalline cellulose by carrying out acetylization reaction to tealeaves fiber, improve hydrophobic performance and the thermostability of material, physical modification method is coordinated to add other effective constituent again, improve fiber weather resistance and dispersiveness in steam-pressing aero-concrete, the nanometer boron fibre added adds the intensity of building block, apparent density and thermal conductivity, the building waste added solves the problem of environmental pollution, instead of the effect of part of cement, reduce production cost, and realize energy-conserving and environment-protective, the theme of turning waste into wealth, aerated-block shock resistance of the present invention is good, shock resistance reaches more than nine grades, have heat-resisting simultaneously, heat insulation property is good, ageing-resistant, antiseepage, the advantage such as water-fast, have a extensive future.
Embodiment
The autoclave aerated concrete building block that described a kind of shock strength is high, it is characterized in that, be made up of the raw material of following weight part: mullite powder 50, building waste 30, cement 4, aluminium powder cream 0.08, carboxyl end of the liquid acrylonitrile-butadiene rubber 7, polyoxyethylene glycol 4, diacetyl oxide 45, tealeaves fiber 8, nanometer boron fibre 3, Oleum Cocois 4, nanometer sulfuric acid silicon 2, cellulose acetate 1.6, aluminium hydroxide 0.3, silicon carbide 0.6, suitable quantity of water.
Making method comprises the following steps:
(1) tealeaves fiber is put into baking oven in 105 DEG C of dry 1-2 hour, put into retort with pre-steaming 20-40 minute simultaneously, add diacetyl oxide, nanometer sulfuric acid silicon stirring and evenly mixing leaves standstill 3-5 hour, then 100-140 DEG C of reaction 2-3 hour is heated to, dry to neutral with clear water rinsing, spray vaporific Oleum Cocois dry;
(2) mullite powder, building waste 5-8% hydrochloric acid soln are soaked 3-4 hour, washing, to neutral, calcines 4-5 hour at 650-750 DEG C, is cooled to 120-130 DEG C and adds carboxyl end of the liquid acrylonitrile-butadiene rubber, cellulose acetate grinding 30-50 minute;
(3) dropped in stirrer by step (2) material, add water stirring pulping, adds step (1) material, nanometer boron fibre stirs 2min, add cement mixing 1min, then add aluminium powder cream and other remaining components and stir 30s and obtain slurry, and ratio of water to material is 0.53;
(4) slurry that step (3) is obtained is entered mould, leaving standstill gets angry just supports 2-4 hour, and excision exceeds mould part, and reactor is put in the demoulding, and control temperature 150-170 DEG C is carried out high-temperature steam curing 8-12 hour, discharging.
The technical indicator of the autoclave aerated concrete building block that the present invention obtains is as follows:
(1) volume-weighted average is 550kg/m
3;
(2) thermal conductivity (W/mk): 0.12, has good thermal and insulating performance;
(3) ultimate compression strength: 7.1MPa;
(4) tensile splitting strength improves 17.1%.
Claims (2)
1. the autoclave aerated concrete building block that a shock strength is high, it is characterized in that, be made up of the raw material of following weight part: mullite powder 50-52, building waste 30-31, cement 4-6, aluminium powder cream 0.08-0.1, carboxyl end of the liquid acrylonitrile-butadiene rubber 5-7, polyoxyethylene glycol 4-5, diacetyl oxide 45-48, tealeaves fiber 6-8, nanometer boron fibre 3-5, Oleum Cocois 3-4, nanometer sulfuric acid silicon 2-4, cellulose acetate 1.2-1.6, aluminium hydroxide 0.3-0.5, silicon carbide 0.6-0.8, suitable quantity of water.
2. the making method of the autoclave aerated concrete building block that a kind of shock strength according to claim 1 is high, is characterized in that comprising the following steps:
(1) tealeaves fiber is put into baking oven in 105 DEG C of dry 1-2 hour, put into retort with pre-steaming 20-40 minute simultaneously, add diacetyl oxide, nanometer sulfuric acid silicon stirring and evenly mixing leaves standstill 3-5 hour, then 100-140 DEG C of reaction 2-3 hour is heated to, dry to neutral with clear water rinsing, spray vaporific Oleum Cocois dry;
(2) mullite powder, building waste 5-8% hydrochloric acid soln are soaked 3-4 hour, washing, to neutral, calcines 4-5 hour at 650-750 DEG C, is cooled to 120-130 DEG C and adds carboxyl end of the liquid acrylonitrile-butadiene rubber, cellulose acetate grinding 30-50 minute;
(3) dropped in stirrer by step (2) material, add water stirring pulping, adds step (1) material, nanometer boron fibre stirs 2min, add cement mixing 1min, then add aluminium powder cream and other remaining components and stir 30s and obtain slurry, and ratio of water to material is 0.53;
(4) slurry that step (3) is obtained is entered mould, leaving standstill gets angry just supports 2-4 hour, and excision exceeds mould part, and reactor is put in the demoulding, and control temperature 150-170 DEG C is carried out high-temperature steam curing 8-12 hour, discharging.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201510754588.4A CN105367119A (en) | 2015-11-09 | 2015-11-09 | Autoclaved aerated concrete block with high shock strength and manufacture method thereof |
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| CN201510754588.4A CN105367119A (en) | 2015-11-09 | 2015-11-09 | Autoclaved aerated concrete block with high shock strength and manufacture method thereof |
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| CN105367119A true CN105367119A (en) | 2016-03-02 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106830860A (en) * | 2017-01-18 | 2017-06-13 | 邵阳市仲鹏实业有限公司 | Environmental protection brick prepared by a kind of utilization building waste and preparation method thereof |
| CN109776037A (en) * | 2019-03-14 | 2019-05-21 | 湖南辰砾新材料有限公司 | A kind of high-strength waterproof concrete |
| CN111530418A (en) * | 2020-04-30 | 2020-08-14 | 深圳市爱玛特科技有限公司 | Activated carbon rod for improving taste of drinking water |
| CN113152780A (en) * | 2021-05-28 | 2021-07-23 | 曲靖市中泰新型墙材有限公司 | Autoclaved aerated concrete plate and preparation method thereof |
| CN114163189A (en) * | 2021-12-08 | 2022-03-11 | 宁波龙峰混凝土有限公司 | High-strength concrete and preparation process thereof |
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| CN102211164A (en) * | 2011-05-13 | 2011-10-12 | 无锡德乾能源设备有限公司 | Application of refractory brick in casting field |
| CN103833276A (en) * | 2014-01-14 | 2014-06-04 | 安徽盛仁新型建材有限公司 | Environment-friendly lightweight calcium carbide slag aerated brick and manufacturing method thereof |
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| US8951786B1 (en) * | 2010-04-27 | 2015-02-10 | Biomason, Inc. | Compositions, tools and methods for the manufacture of construction materials using enzymes |
| CN102211164A (en) * | 2011-05-13 | 2011-10-12 | 无锡德乾能源设备有限公司 | Application of refractory brick in casting field |
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| 傅七兰等: "纤维素乙酰化改性研究", 《第六届中国木材保护大会暨2012中国景观木竹结构与材料产业发展高峰论坛 论文集》 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106830860A (en) * | 2017-01-18 | 2017-06-13 | 邵阳市仲鹏实业有限公司 | Environmental protection brick prepared by a kind of utilization building waste and preparation method thereof |
| CN109776037A (en) * | 2019-03-14 | 2019-05-21 | 湖南辰砾新材料有限公司 | A kind of high-strength waterproof concrete |
| CN109776037B (en) * | 2019-03-14 | 2021-12-10 | 湖南辰砾新材料有限公司 | High-strength waterproof concrete |
| CN111530418A (en) * | 2020-04-30 | 2020-08-14 | 深圳市爱玛特科技有限公司 | Activated carbon rod for improving taste of drinking water |
| CN113152780A (en) * | 2021-05-28 | 2021-07-23 | 曲靖市中泰新型墙材有限公司 | Autoclaved aerated concrete plate and preparation method thereof |
| CN114163189A (en) * | 2021-12-08 | 2022-03-11 | 宁波龙峰混凝土有限公司 | High-strength concrete and preparation process thereof |
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