CN111943618A - Light high-strength aerated concrete block and preparation method thereof - Google Patents
Light high-strength aerated concrete block and preparation method thereof Download PDFInfo
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- CN111943618A CN111943618A CN202010504170.9A CN202010504170A CN111943618A CN 111943618 A CN111943618 A CN 111943618A CN 202010504170 A CN202010504170 A CN 202010504170A CN 111943618 A CN111943618 A CN 111943618A
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- aerated concrete
- concrete block
- silicon dioxide
- slurry
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/14—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing calcium sulfate cements
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00008—Obtaining or using nanotechnology related materials
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/40—Porous or lightweight materials
Abstract
The invention discloses a light high-strength aerated concrete block and a preparation method thereof, wherein the light high-strength aerated concrete block is prepared from the following raw materials in parts by weight: 380-390 parts of fly ash, 75-83 parts of cement, 55-65 parts of lime, 0.60-0.64 part of aluminum paste, 16-22 parts of gypsum and 53-58 parts of nano silicon dioxide. Through the raw material proportion and the preparation method, the produced building block has high compressive strength and good water resistance; the slurry hardening speed is high and the production efficiency is high when the building block is prepared.
Description
Technical Field
The invention relates to the technical field of aerated concrete blocks, in particular to a light high-strength aerated concrete block and a preparation method thereof.
Background
With the continuous improvement of living standard, the solid waste produced in daily life and production of human beings will produce billions of tons of garbage every year, because of large discharge amount, complex and various components, pollution, resource and sociality, and needs harmless, resource, quantitative reduction and socialization treatment, if not properly treated, the environment will be polluted, the environmental sanitation will be affected, the resource will be wasted, the safety of production and life will be destroyed, and the social harmony will be destroyed. For example, the residual waste in building construction or concrete waste such as floor slab concrete layer removed from the building construction can not be discharged to the river channel (water channel is blocked because of easy pollution) or converted into commodity for sale, and the waste is only smashed and then transported away for landfill in a factory, so that extra treatment costs such as landfill site, machinery, manpower and the like are required, and the burden is large. The glass waste is generated in life, industry, medical treatment and the like, so the source is complex and the treatment is complicated. During the production, processing and transportation of the coal ash aerated block, more unqualified waste materials of the coal ash aerated block are easily generated, and the waste materials of the coal ash aerated block occupy the inventory of enterprises, thus the operation cost of the enterprises is invisibly increased and the treatment is difficult. On the copper-iron ore forming belt of Yangtze river at the copper tomb, the internal ore forming condition is favorable, and the belt is known as a non-ferrous metal copper ore; the holy non-ferrous metal mineral products mainly comprise copper ores, and also contain gold, silver, molybdenum, manganese, aluminum, zinc and the like, and have complex structures, the non-ferrous metal slag produced in the production process of the holy non-ferrous metal mineral products has very high sulfur content, and the non-ferrous metal slag is troublesome to treat and has high cost.
The existing aerated concrete block uses sintered aggregate, lime, cement, gypsum and the like as main materials, and is subjected to aluminum powder (paste) gas generation and high-pressure saturated steam autoclaved curing to obtain a novel porous light building material with certain strength. However, the autoclaved fly ash aerated concrete block manufactured by the method has slightly low compressive strength of only 3 Mpa; the lime in the component raw materials has strong water absorption, and the finished building block has poor water resistance; in addition, in the preparation process, the hardening speed of the slurry is low, and the production efficiency is low. Based on the technical problem, the invention aims to solve by designing a lightweight high-strength aerated concrete block and a preparation method thereof.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a lightweight high-strength aerated concrete block and a preparation method thereof.
The invention solves the technical problems through the following technical means:
the lightweight high-strength aerated concrete block is prepared from the following raw materials in parts by weight: 380-390 parts of fly ash, 75-83 parts of cement, 55-65 parts of lime, 0.60-0.64 part of aluminum paste, 16-22 parts of gypsum and 53-58 parts of nano silicon dioxide.
The preparation method of the light high-strength aerated concrete block comprises the following steps:
(1) preparing slurry:
(1.1) putting the nano silicon dioxide into a polyethylene glycol solution with the mass fraction of 5%, and performing ultrasonic dispersion for 30-40min to obtain a nano silicon dioxide dispersion liquid;
(1.2) adding the fly ash into the nano-silica dispersion liquid, and continuing to perform ultrasonic dispersion for 20-30min to enable the nano-silica to be adsorbed on the surface of the fly ash to obtain primary slurry;
(1.3) feeding the primary slurry into a pulping tank, adding cement, lime, aluminum powder paste, gypsum and a proper amount of water, stirring and mixing, feeding into a wet ball mill, and preparing a finished slurry by using the wet ball mill;
(2) blank preparation:
(2.1) pouring the finished slurry into a mold for molding, precuring for 2-3h at 40-50 ℃, demolding, lifting to a cutting part for cutting to obtain a brick blank;
(3) steam pressure curing:
(3.1) placing the brick blank into a reaction kettle for steam pressure curing, wherein the steam pressure curing time is 8-10h, the temperature is 170-; and (4) moving the brick blank subjected to autoclaved curing out of the reaction kettle to obtain the light high-strength aerated concrete block.
Preferably, the lightweight high-strength aerated concrete block is made of lime.
Preferably, in the preparation method of the lightweight high-strength aerated concrete block, gypsum is put into a ball mill for ball milling treatment before being added into a pulping tank, and the particle size after ball milling is 0.06-0.08 mm.
The invention has the advantages that: the production method is characterized in that nano silicon dioxide is added into production raw materials and is adsorbed on the surface of fly ash through a dispersion process, and the function of the nano silicon dioxide in an integral raw material system is mainly embodied in the following aspects: a, reacting silicon dioxide and aluminum oxide in fly ash with calcium oxide in lime to generate short rod-shaped cluster particles (C-S-H), so that the building block has better compressive strength, adsorbing nano silicon dioxide on the surface of the fly ash, and promoting the reaction by utilizing the high activity of the nano silicon dioxide to further promote the growth of the short rod-shaped cluster particles (C-S-H), so that the content of the (C-S-H) in the building block is higher, and further the building block has higher compressive strength; b, promoting the reaction of silicon dioxide and aluminum oxide in the fly ash and calcium oxide in lime by utilizing the high activity of the nano silicon dioxide, accelerating the hardening speed of the slurry after the reaction and improving the production efficiency of the building block; the nano silicon dioxide has hydrophobicity, and can reduce the water absorption of the slurry after being added into the slurry, further improve the hardening speed and simultaneously improve the water resistance of the finished building block; d, the adsorption effect of the nano silicon dioxide plays a role in filling partial pores, the density of the building block is increased, the compressive strength of the building block is further improved on the one hand, and the water absorption of the building block can be reduced on the other hand, so that the water resistance of the building block is improved.
Through the raw material proportion and the preparation method, the produced building block has high compressive strength and good water resistance; the slurry hardening speed is high and the production efficiency is high when the building block is prepared.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention are clearly and completely described below, and it is obvious that the described embodiments are a part of the embodiments of the present invention, but not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The lightweight high-strength aerated concrete block is prepared from the following raw materials in parts by weight: 380-390 parts of fly ash, 75-83 parts of cement, 55-65 parts of lime, 0.60-0.64 part of aluminum paste, 16-22 parts of gypsum and 53-58 parts of nano silicon dioxide.
The preparation method of the light high-strength aerated concrete block comprises the following steps:
(1) preparing slurry:
(1.1) putting the nano silicon dioxide into a polyethylene glycol solution with the mass fraction of 5%, and performing ultrasonic dispersion for 30-40min to obtain a nano silicon dioxide dispersion liquid;
(1.2) adding the fly ash into the nano-silica dispersion liquid, and continuing to perform ultrasonic dispersion for 20-30min to enable the nano-silica to be adsorbed on the surface of the fly ash to obtain primary slurry;
(1.3) feeding the primary slurry into a pulping tank, adding cement, lime, aluminum powder paste, gypsum and a proper amount of water, stirring and mixing, feeding into a wet ball mill, and preparing a finished slurry by using the wet ball mill;
(2) blank preparation:
(2.1) pouring the finished slurry into a mold for molding, precuring for 2-3h at 40-50 ℃, demolding, lifting to a cutting part for cutting to obtain a brick blank;
(3) steam pressure curing:
(3.1) placing the brick blank into a reaction kettle for steam pressure curing, wherein the steam pressure curing time is 8-10h, the temperature is 170-; and (4) moving the brick blank subjected to autoclaved curing out of the reaction kettle to obtain the light high-strength aerated concrete block.
Preferably, the lightweight high-strength aerated concrete block is made of lime.
Preferably, in the preparation method of the lightweight high-strength aerated concrete block, gypsum is put into a ball mill for ball milling treatment before being added into a pulping tank, and the particle size after ball milling is 0.06-0.08 mm.
Example 1, a lightweight high-strength aerated concrete block made from the following raw materials in parts by weight (kg): fly ash 380, cement 75, lime 55, aluminum powder paste 0.60, gypsum 16 and nano silicon dioxide 53.
Example 2, a lightweight high-strength aerated concrete block made from the following raw materials in parts by weight (kg): the raw materials of the mortar comprise fly ash 385, cement 79, lime 60, aluminum paste 0.62, gypsum 19 and nano silicon dioxide 55.
Example 3, a lightweight high-strength aerated concrete block made from the following raw materials in parts by weight (kg): fly ash 390, cement 83, lime 65, aluminum powder paste 0.64, gypsum 22 and nano silicon dioxide 58.
The production method is characterized in that nano silicon dioxide is added into production raw materials and is adsorbed on the surface of fly ash through a dispersion process, and the function of the nano silicon dioxide in an integral raw material system is mainly embodied in the following aspects: a, reacting silicon dioxide and aluminum oxide in fly ash with calcium oxide in lime to generate short rod-shaped cluster particles (C-S-H), so that the building block has better compressive strength, adsorbing nano silicon dioxide on the surface of the fly ash, and promoting the reaction by utilizing the high activity of the nano silicon dioxide to further promote the growth of the short rod-shaped cluster particles (C-S-H), so that the content of the (C-S-H) in the building block is higher, and further the building block has higher compressive strength; b, promoting the reaction of silicon dioxide and aluminum oxide in the fly ash and calcium oxide in lime by utilizing the high activity of the nano silicon dioxide, accelerating the hardening speed of the slurry after the reaction and improving the production efficiency of the building block; the nano silicon dioxide has hydrophobicity, and can reduce the water absorption of the slurry after being added into the slurry, further improve the hardening speed and simultaneously improve the water resistance of the finished building block; d, the adsorption effect of the nano silicon dioxide plays a role in filling partial pores, the density of the building block is increased, the compressive strength of the building block is further improved on one hand, and the water absorption of the building block can be reduced on the other hand, so that the water resistance of the building block is improved;
through the raw material proportion and the preparation method, the produced building block has high compressive strength and good water resistance; the slurry hardening speed is high and the production efficiency is high when the building block is prepared.
It is noted that, in this document, relational terms such as first and second, and the like, if any, are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (4)
1. The lightweight high-strength aerated concrete block is characterized by being prepared from the following raw materials in parts by weight: 380-390 parts of fly ash, 75-83 parts of cement, 55-65 parts of lime, 0.60-0.64 part of aluminum paste, 16-22 parts of gypsum and 53-58 parts of nano silicon dioxide.
2. The method for preparing the lightweight high-strength aerated concrete block according to claim 1, which comprises the following steps:
(1) preparing slurry:
(1.1) putting the nano silicon dioxide into a polyethylene glycol solution with the mass fraction of 5%, and performing ultrasonic dispersion for 30-40min to obtain a nano silicon dioxide dispersion liquid;
(1.2) adding the fly ash into the nano-silica dispersion liquid, and continuing to perform ultrasonic dispersion for 20-30min to enable the nano-silica to be adsorbed on the surface of the fly ash to obtain primary slurry;
(1.3) feeding the primary slurry into a pulping tank, adding cement, lime, aluminum powder paste, gypsum and a proper amount of water, stirring and mixing, feeding into a wet ball mill, and preparing a finished slurry by using the wet ball mill;
(2) blank preparation:
(2.1) pouring the finished slurry into a mold for molding, precuring for 2-3h at 40-50 ℃, demolding, lifting to a cutting part for cutting to obtain a brick blank;
(3) steam pressure curing:
(3.1) placing the brick blank into a reaction kettle for steam pressure curing, wherein the steam pressure curing time is 8-10h, the temperature is 170-; and (4) moving the brick blank subjected to autoclaved curing out of the reaction kettle to obtain the light high-strength aerated concrete block.
3. The lightweight high-strength aerated concrete block according to claim 1, characterized in that: the lime is quicklime.
4. The method for preparing the lightweight high-strength aerated concrete block according to claim 2, wherein the method comprises the following steps: before the gypsum is added into the pulping tank, the gypsum is put into a ball mill for ball milling treatment, and the particle size after ball milling is 0.06-0.08 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010504170.9A CN111943618A (en) | 2020-06-05 | 2020-06-05 | Light high-strength aerated concrete block and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010504170.9A CN111943618A (en) | 2020-06-05 | 2020-06-05 | Light high-strength aerated concrete block and preparation method thereof |
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| CN111943618A true CN111943618A (en) | 2020-11-17 |
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| CN202010504170.9A Pending CN111943618A (en) | 2020-06-05 | 2020-06-05 | Light high-strength aerated concrete block and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113816713A (en) * | 2021-10-15 | 2021-12-21 | 重庆杰博思石膏有限公司 | Phosphorus II type anhydrous gypsum-based masonry mortar and preparation method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104250106A (en) * | 2013-06-28 | 2014-12-31 | 陶安庆 | Autoclaved aerated concrete building block |
| CN105130324A (en) * | 2015-08-19 | 2015-12-09 | 铜陵铜冠建安新型环保建材科技有限公司 | Manufacture method for autoclaved fly-ash aerated concrete block |
| CN106431348A (en) * | 2016-09-27 | 2017-02-22 | 甘肃华晨生态治理有限公司 | Production method of multifunctional quincuncial coal ash light through-hole ceramsite |
| CN108609952A (en) * | 2018-05-21 | 2018-10-02 | 济南大学 | A kind of test method of composite modified concrete and its interfacial transition zone |
| CN108892438A (en) * | 2018-09-29 | 2018-11-27 | 福建江夏学院 | A kind of high tenacity lightweight concrete and preparation method thereof |
| CN111592292A (en) * | 2020-06-05 | 2020-08-28 | 铜陵铜冠建安新型环保建材科技有限公司 | Copper slag reinforced aerated concrete block and preparation method thereof |
-
2020
- 2020-06-05 CN CN202010504170.9A patent/CN111943618A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104250106A (en) * | 2013-06-28 | 2014-12-31 | 陶安庆 | Autoclaved aerated concrete building block |
| CN105130324A (en) * | 2015-08-19 | 2015-12-09 | 铜陵铜冠建安新型环保建材科技有限公司 | Manufacture method for autoclaved fly-ash aerated concrete block |
| CN106431348A (en) * | 2016-09-27 | 2017-02-22 | 甘肃华晨生态治理有限公司 | Production method of multifunctional quincuncial coal ash light through-hole ceramsite |
| CN108609952A (en) * | 2018-05-21 | 2018-10-02 | 济南大学 | A kind of test method of composite modified concrete and its interfacial transition zone |
| CN108892438A (en) * | 2018-09-29 | 2018-11-27 | 福建江夏学院 | A kind of high tenacity lightweight concrete and preparation method thereof |
| CN111592292A (en) * | 2020-06-05 | 2020-08-28 | 铜陵铜冠建安新型环保建材科技有限公司 | Copper slag reinforced aerated concrete block and preparation method thereof |
Non-Patent Citations (3)
| Title |
|---|
| 巫广义等: "基于正交试验法的透水混凝土性能影响研究", 《新型建筑材料》 * |
| 李之旭等: "粉煤灰蒸压加气混凝土砌块强度影响因素及控制", 《四川水泥》 * |
| 梁波等: "负载纳米SiO_2的火山灰对传统石灰的改性", 《科学技术与工程》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113816713A (en) * | 2021-10-15 | 2021-12-21 | 重庆杰博思石膏有限公司 | Phosphorus II type anhydrous gypsum-based masonry mortar and preparation method thereof |
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Application publication date: 20201117 |