CN106007788A - Lightweight aggregate concrete small hollow block with a large doping amount of fly ash slag and production method thereof - Google Patents
Lightweight aggregate concrete small hollow block with a large doping amount of fly ash slag and production method thereof Download PDFInfo
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- CN106007788A CN106007788A CN201610387330.XA CN201610387330A CN106007788A CN 106007788 A CN106007788 A CN 106007788A CN 201610387330 A CN201610387330 A CN 201610387330A CN 106007788 A CN106007788 A CN 106007788A
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- parts
- small size
- concrete blocks
- flyash
- hollow concrete
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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
- C04B28/02—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 hydraulic cements other than calcium sulfates
- C04B28/04—Portland 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
- C04B2111/40—Porous or lightweight materials
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The present invention relates to the technical field of building materials, and in particular relates to a lightweight aggregate concrete small hollow block with a large doping amount of fly ash slag. The hollow block comprises the components of: 20-50 parts of fly ash, 35-70 parts of blaster furnace slag, and 8-15 parts of cement. The invention comprehensively utilizes fly ash and blaster furnace slag produced in heat-engine plant, and has large utilization amount of waste; the technology can be used in industrial production to reach high utilization rate and large amount of industrial wastes; the prepared products has stable compressive strength of above 5MPa, density of less than 800kg / m<3>, and excellent properties.
Description
Technical field
The present invention relates to building material technical field, in particular to a kind of flyash in great mixed amount slag
Lightweight small size hollow concrete blocks and production method thereof.
Background technology
Flyash is the industrial residue of thermal power plant discharge, owing to having a large capacity and a wide range, particularly serious dirty
Dye environment and land occupation, for a long time, the comprehensive utilization of flyash is all attached great importance in countries in the world.
China, as thermal power generation big country in the world, starts always in terms of total utilization of PCA from the sixties
Carry out substantial amounts of research and Product Development.Such as research and develop fly ash aerated building block, flyash
Steam pressure (steam-cured) brick, fly ash baking-free non-steaming brick, coal ash sintering brick, lytag etc.,
Great contribution is made for China's fly ash comprehensive utilization.
Power plant's bottom slag is the coal-fired cinder discharged from bottom after boiler combustion, owing to its temperature is high,
Typically require and be discharged into ash storehouse by ash-slag disposal system again, owing to it contains after being pulverized and being water-cooled
The moisture of 30%, have impact on its value, utilizes only as implant for a long time, and one is it
Consumption is few, and two is that its price is low, and this type of slag muck is existed by the most most main treating method of power plant
Ash storehouse, does not only take up substantial amounts of farmland, but also pollutes the environment.
The natural light-weight aggregate of the many employings of lightweight small size hollow concrete blocks, wastes natural resources, destruction
Ecological environment；Using artificial lightweight aggregate, its energy consumption is high, pollute weight.If can be by flyash and bottom slag
Carry out twice laid, produce lightweight small size hollow concrete blocks, can not only be cost-effective, moreover it is possible to
Play the effect of protection environment.Although flyash in great mixed amount slag produces the research of novel wall material at present
Also have been reported that on publication at home, but its production cost is relatively big, be the most also that laboratory becomes
Really, the report not yet having technological achievement to apply, it is applied to feasibility in actual production the highest.
In view of this, the special proposition present invention.
Summary of the invention
The first object of the present invention is to provide a kind of lightweight small size hollow concrete blocks, described
Lightweight small size hollow concrete blocks, can not only with the industrial residue such as flyash and bottom slag as raw material
Cost-effective, moreover it is possible to play the effect of protection environment；Industrial residue utilization rate is high, and the useless amount of profit is big.
The second object of the present invention is to provide a kind of described lightweight small size hollow concrete blocks
Preparation method, the method feasibility is high, can extensively carry out utilization and extention, the building block produced by the method
Performance is good.
In order to realize the above-mentioned purpose of the present invention, spy by the following technical solutions:
A kind of lightweight small size hollow concrete blocks, in parts by weight, its material component is main
Including:
Flyash 20～50 parts, bottom slag 35～70 parts, cement 8～15 parts.
Thermal power plant produce a large amount of bottom slags have honeycomb hole-closing structure, density is little, sintering temperature is high,
The feature that mechanical strength is high, loss on ignition is low；Pass through using cement, flyash as Binder Materials, bottom slag
As aggregate after broken, screening pretreatment, through dispensing, stir, shake extrusion forming, produce fine coal
Ash concrete small size hollow building block.Through scientific and reasonable dispensing during production, it is each that product can meet GB
The requirement of item performance indications, can reach again the target that waste residue utilization rate is high, utilization is big.
Concrete small size hollow building block hollow rate is 25%～50%.Concrete small size hollow building block is applicable to
Building Seismic Design earthquake intensity is the various construction walls in 8 degree and less than 8 degree areas, including high-rise and big
The building of span, it is also possible to for urban operating mechanisms such as enclosure wall, retaining wall, bridge and flower beds, applies model
Enclose quite varied.In addition building-block also can reduce deadweight and the material usage of product, both economized in raw materials
Utilize again construction.
Preferably, lightweight small size hollow concrete blocks as above, in parts by weight,
Its material component specifically includes that
Flyash 20～30 parts, bottom slag 58～70 parts, cement 10～12 parts.
It is further preferred that lightweight small size hollow concrete blocks as above, according to weight portion
Number meter, its material component specifically includes that
Flyash 22～28 parts, bottom slag 60～68 parts, cement 10.5～11.5 parts.
Preferably, lightweight small size hollow concrete blocks as above, described flyash is thermoelectricity
The original state flyash that factory produces.
Owing to the ash quantity excursion of coal is very wide, and this change not only occurs on from all over the world
Or in the coal of areal different coal, even also occur in the coal of the different part in same colliery.
Therefore, the specific chemical composition content of flyash is constituted, the most just because of the place of production, the burning of coal mode of coal
Different with degree etc. and different.Preferably, the oxide composition of flyash used in this application
For:
SiO246～52%, Al2O315～29%, Fe2O35～9%, CaO 4～18%, MgO 1.5～4.5%,
SO31～2%, surplus is other oxide impurities that can not avoid.
Preferably, lightweight small size hollow concrete blocks as above, the particle diameter of described bottom slag
It is 5～10mm.
Under this particle diameter, bottom slag granule cylindrical compress strength is relatively low, 0.5～about 1.7MPa.
Preferably, the oxide of bottom slag used herein consists of:
SiO249～54%, Al2O315～28%, Fe2O36～13%, CaO 4～12%, MgO
1.5～4.5%, SO30.25～1%, surplus is other oxide impurities that can not avoid.
Preferably, lightweight small size hollow concrete blocks as above, described cement is common
42.4R portland cement.
The production method of lightweight small size hollow concrete blocks as above, including:
By described flyash, bottom slag, cement according to set parts by weight and water stirring and evenly mixing, shake
Dynamic extrusion forming, maintenance gets product.
Preferably, the production method of lightweight small size hollow concrete blocks as above, according to weight
Amount number meter, the parts by weight of described water are 7～14 parts.
Preferably, the production method of lightweight small size hollow concrete blocks as above, carrying out
During described vibration extrusion forming operation, the power of molding main-machine is 40～80kW, and frequency of vibration is
55～100Hz, amplitude 1.2～1.5mm.
Vibration extrusion forming building block, is essentially compound and changes through pre-pressing stage, internal structure
Become, so that degree of compaction is improved, intensity improves.Frequency of vibration and amplitude be according to strength of parent etc. because of
Element is determined, and has a significant impact the intensity of building block.
Preferably, the production method of lightweight small size hollow concrete blocks as above, described foster
The method protected is natural curing or steam curing.
Natural curing is that (temperature is not less than 5 DEG C to concrete, and relative humidity is 90% under field conditions (factors)
Carry out above) a kind of mode of maintenance.Under natural curing, owing to temperature is not fixed, temperature is higher
Time concrete strength rate of increase relatively big, when temperature is relatively low, concrete strength rate of increase is less, the most certain
Regularity.
Steam curing is that concrete component is placed on steam-curing chamber, is passed through water vapour and makes concrete heat up,
Accelerate cement and supplementary cementitious material hydration and hardening process, be rapidly achieved demoulding strength, accelerate template week
Turn and production efficiency.
Compared with prior art, the invention have the benefit that
1), the present invention comprehensively utilize flyash, the bottom slag that thermal power plant produces, waste residue utilization amount is big,
After technology is applied to industrialized production, product industrial residue utilization rate is high, the useless amount of profit is big；
2), product comprcssive strength stably reach more than 5MPa, density be less than 800kg/m3, have excellent
Different performance.
3), product practical, lightweight, heat insulation, insulation, anti seismic efficiency good, sky, alternative market
So haydite, artificial porcelain granule produce high volume fly ash concrete small-sized hollow building block, light aggregate concrete
Building-block, energy-conservation, reduce discharging, the useless effect of profit notable.
Detailed description of the invention
Below in conjunction with embodiment, embodiment of the present invention are described in detail, but this area skill
Art personnel are it will be appreciated that the following example is merely to illustrate the present invention, and are not construed as limiting the present invention
Scope.Unreceipted actual conditions person in embodiment, the condition advised according to normal condition or manufacturer
Carry out.Agents useful for same or instrument unreceipted production firm person, being can be by commercially available purchase acquisition
Conventional products.
Embodiment 1
A kind of production method of lightweight small size hollow concrete blocks, including:
By 20 parts of described flyash, bottom slag 70 parts, cement 8 parts and water stirring and evenly mixing, vibration adds
Molded, maintenance i.e. obtains lightweight small size hollow concrete blocks.
Embodiment 2
A kind of production method of lightweight small size hollow concrete blocks, including:
50 parts of described flyash, bottom slag 35 parts, cement 15 parts are pressed and 7 parts of water stirring and evenly mixings,
Vibration extrusion forming, natural curing i.e. obtains lightweight small size hollow concrete blocks.
When carrying out described vibration extrusion forming operation, the power of molding main-machine is 40kW, vibration frequency
Rate is 100Hz, amplitude 1.2mm.
Embodiment 3
A kind of production method of lightweight small size hollow concrete blocks, including:
By thermal power plant produce original state flyash 30 parts, particle diameter be 5～10mm bottom slag 58 parts,
Common 42.4R portland cement 10 parts is pressed and 14 parts of water stirring and evenly mixings, vibrates extrusion forming, steam
Maintenance i.e. obtains lightweight small size hollow concrete blocks.
When carrying out described vibration extrusion forming operation, the power of molding main-machine is 80kW, vibration frequency
Rate is 55Hz, amplitude 1.5mm.
Embodiment 4
A kind of production method of lightweight small size hollow concrete blocks, including:
By thermal power plant produce original state flyash 30 parts, particle diameter be 5～10mm bottom slag 58 parts,
Common 42.4R portland cement 12 parts is pressed and 10 parts of water stirring and evenly mixings, vibrates extrusion forming, steam
Maintenance i.e. obtains lightweight small size hollow concrete blocks.
When carrying out described vibration extrusion forming operation, the power of molding main-machine is 60kW, vibration frequency
Rate is 75Hz, amplitude 1.3mm.
Embodiment 5
In order to be able to be illustrated more clearly that the implementation process of the present invention and effect, the application is in embodiment 1～4
On the basis of provide embodiment 5.
1), experiment material
This project trial furnace bottom ash uses Ning Dong base to enter the horse lotus throne power plant of No. 1 comprehensive slag field, capital
Can power plant, the bottom slag of Ying Lite power plant, flyash uses horse lotus throne power plant, Jing Neng power plant original state powder
Coal ash, have employed the peaceful slag of coal gasification of Shenhua, Jie Meifeng friend's boiler slag simultaneously, and cement uses horse racing water
Mud, rubble, washed-out sand use peaceful east clear water battalion's building stones factory rubble and washed-out sand, yellow ground employing Guan Mahu
Yellow ground.
The chemical composition analysis of various waste residues is as shown in table 1, and the physical property of various materials is shown in Table 2～5.
The chemical composition of all kinds of waste residue in table 1 test Ning Dong base
The bulk density of all kinds of waste residue and sandstone tested by table 2
Table 3 test material Ningxia horse racing P.O425R cement
Table 4 test material thermal power plant original state flyash Fineness
Table 5 Ning Dong base thermal power plant's bottom slag bulk density and granule cylindrical compress strength
2) method, tested and process
First all raw material of test is sampled, gets the raw materials ready, processes, detects analysis, research
The powdered coal cinder characteristic that various types of materials and different enterprise produce, drafts small-scale test according to properties of materials
Scheme, carries out the test of fly ash concrete mini hollow block, small-sized hollow at flyash concrete
On the basis of building block test result, carry out the test of maximum powdered coal cinder addition content, flyash and furnace bottom
Total incorporation of slag is tried by flyash 20～50 parts, bottom slag 35～70 parts, cement 8～15 parts
Test.Power plant's bottom slag is broken by small-scale test through artificial screening, cal rolling, small-sized jaw crusher
Broken, manually sieve, carry out dispensing according to the grain diameter of material, cylindrical compress strength, the performance of cement,
Small-scale test dispensing uses TG100 platform balance, electronic balance accurate measurement, uses Φ 1200mm planet
Formula blender stirs, 200 tons of pressure small machine for making bricks molding, after natural curing 24 hours, uses
Volume 680 × 580 × 1460mm steam-cured railway carriage or compartment steam curing 8 hours, after Temperature fall cooling, according to
" Test methods for the small concrete hollow block " GB/T4111-1997 carries out item by item Indexs measure and divides
Analysis.
The every group of formula of small-scale test confirms through the detection of repeatedly repetition test.Industrialness pilot test stove
Bottom ash uses Ning Dongma lotus throne power plant, capital energy essentially from comprehensive slag field, Ning Dong base 1, flyash
The origin-state ash of Liang Ge enterprise of power plant, cement uses horse racing rather grinding station, east 42.5R normal silicate water
Mud.Bottom slag carries out after being transported into plant area sieving, bulky grain sieves through jaw crushing crusher machine again, according to
Particle diameter puts in storage stand-by.Full-automatic 9 types that production equipment uses our company to be produced by Beijing Rui Tu group are built
Block machine production line.
Product through curing kilns are quiet stop maintenance after, through ferry bus, fall trigger, automatic stacking machine piling, use
Fork truck is delivered to stockyard natural curing, curing period reach 28 days after enter in Corporate Test room according to GB
Row Indexs measure item by item.Type approval test, in addition to using Ning Dong thermal power plant bottom slag, has expanded utilization god
Huaning slag of coal gasification, Jie Meifeng friend's boiler ash are as the test of product aggregate, at type approval test
Successfully basis sets, and preferred product Functionality, quality and appealing design, the preferred plan of low cost are applied to company's production line.
The lightweight small size hollow concrete blocks that flyash in great mixed amount slag produces is through Ningxia building materials quality
Supervision and inspection station is detected, and property indices is up to state standards requirement, and product comprcssive strength reaches
5.2MPa, density is less than 800kg/m3。
3), the present invention use know-why and the technological process of production
Know-why:
A large amount of bottom slags that Ning Dong base thermal power plant produces have that honeycomb hole-closing structure, density is little, sintering
The feature that temperature is high, mechanical strength is high, loss on ignition is low, using cement, flyash as Binder Materials, stove
Bottom ash as aggregate, through dispensing, stirs, shakes extrusion forming after broken, screening pretreatment,
Produce fly ash concrete mini hollow block.Through scientific and reasonable dispensing during production, product can be expired
The requirement of foot GB property indices, can reach again the target that waste residue utilization rate is high, utilization is big.
The proportioning raw materials of 5-1 is with embodiment 4；
The proportioning raw materials of 5-2 is: the original state flyash 28 parts, the particle diameter that thermal power plant are produced are 5～10mm
Bottom slag 60 parts, common 42.4R portland cement 10.5 parts by and 10 parts of water stirring and evenly mixings；
The proportioning raw materials of 5-3 is: the original state flyash 22 parts, the particle diameter that thermal power plant are produced are 5～10mm
Bottom slag 68 parts, common 42.4R portland cement 11.5 parts by and 10 parts of water stirring and evenly mixings；
Technological process is with embodiment 4；Wherein bottom slag and flyash be derived from respectively 5-1 in table 1,
Three power plant of 5-2,5-3.
Experimental example 1
The lightweight small size hollow concrete blocks preparing embodiment 1～5 detects, testing result
As shown in table 6.
The fly ash small hollow blocks testing result that the test of table 6 flyash in great mixed amount slag produces
Measurement standard:
GB/T4111 Test methods for the small concrete hollow block；
GB/T15229-2002 lightweight small size hollow concrete blocks；
JC/T862-2008 fly ash concrete mini hollow block.
Although illustrate and describing the present invention with specific embodiment, but it will be appreciated that and do not carrying on the back
May be made that in the case of the spirit and scope of the present invention many other change and amendment.Therefore,
This means all these changes including belonging in the scope of the invention in the following claims and repair
Change.
Claims (10)
1. a lightweight small size hollow concrete blocks, it is characterised in that in parts by weight, its material component specifically includes that
Flyash 20～50 parts, bottom slag 35～70 parts, cement 8～15 parts.
2. lightweight small size hollow concrete blocks as claimed in claim 1, it is characterised in that in parts by weight, its material component specifically includes that
Flyash 20～30 parts, bottom slag 58～70 parts, cement 10～12 parts.
3. lightweight small size hollow concrete blocks as claimed in claim 1, it is characterised in that in parts by weight, its material component specifically includes that
Flyash 22～28 parts, bottom slag 60～68 parts, cement 10.5～11.5 parts.
4. the lightweight small size hollow concrete blocks as described in any one of claims 1 to 3, it is characterised in that described flyash is the original state flyash that thermal power plant produces.
5. the lightweight small size hollow concrete blocks as described in any one of claims 1 to 3, it is characterised in that the particle diameter of described bottom slag is 5～10mm.
6. the lightweight small size hollow concrete blocks as described in any one of claims 1 to 3, it is characterised in that described cement is common 42.4R portland cement.
7. the production method of the lightweight small size hollow concrete blocks described in any one of claim 1～6, it is characterised in that including:
By described flyash, bottom slag, cement according to set parts by weight and water stirring and evenly mixing, vibrating extrusion forming, maintenance gets product.
8. the production method of lightweight small size hollow concrete blocks as claimed in claim 7, it is characterised in that in parts by weight, the parts by weight of described water are 7～14 parts.
9. the production method of lightweight small size hollow concrete blocks as claimed in claim 7, it is characterised in that when carrying out described vibration extrusion forming operation, the power of molding main-machine is 40～80kW, and frequency of vibration is 55～100Hz, amplitude 1.2～1.5mm.
10. the production method of lightweight small size hollow concrete blocks as claimed in claim 7, it is characterised in that the method for described maintenance is natural curing or steam curing.
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| CN201610387330.XA CN106007788A (en) | 2016-06-02 | 2016-06-02 | Lightweight aggregate concrete small hollow block with a large doping amount of fly ash slag and production method thereof |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106986568A (en) * | 2017-02-28 | 2017-07-28 | 中南大学 | A kind of unburned lightweight aggregate, lightweight concrete and its preparation |
| CN107116664A (en) * | 2017-06-09 | 2017-09-01 | 四川省劲腾环保建材有限公司 | The production method of self-heat conserving light aggregate concrete hollow block |
| CN107162518A (en) * | 2017-07-12 | 2017-09-15 | 包头市晟泰环保科技建材有限责任公司 | Concrete solid brick and preparation method thereof |
| CN110272239A (en) * | 2018-03-13 | 2019-09-24 | 金玟九 | Utilize the extrusion forming plate body and block of furnace bottom ash, flyash and macromolecule modifier |
| CN111875274A (en) * | 2020-07-16 | 2020-11-03 | 国家能源集团宁夏煤业有限责任公司 | Method for preparing ceramsite and ceramsite prepared by same |
| CN112194417A (en) * | 2020-09-29 | 2021-01-08 | 陕西科技大学 | Foaming non-steamed building block based on gasified slag and preparation method thereof |
| CN113620675A (en) * | 2021-09-15 | 2021-11-09 | 包头市耀祥硕环保建材有限责任公司 | Environment-friendly brick produced by using industrial park waste discharge and preparation method thereof |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106986568A (en) * | 2017-02-28 | 2017-07-28 | 中南大学 | A kind of unburned lightweight aggregate, lightweight concrete and its preparation |
| CN106986568B (en) * | 2017-02-28 | 2019-07-16 | 中南大学 | A kind of unburned lightweight aggregate, lightweight concrete and its preparation |
| CN107116664A (en) * | 2017-06-09 | 2017-09-01 | 四川省劲腾环保建材有限公司 | The production method of self-heat conserving light aggregate concrete hollow block |
| CN107162518A (en) * | 2017-07-12 | 2017-09-15 | 包头市晟泰环保科技建材有限责任公司 | Concrete solid brick and preparation method thereof |
| CN110272239A (en) * | 2018-03-13 | 2019-09-24 | 金玟九 | Utilize the extrusion forming plate body and block of furnace bottom ash, flyash and macromolecule modifier |
| CN111875274A (en) * | 2020-07-16 | 2020-11-03 | 国家能源集团宁夏煤业有限责任公司 | Method for preparing ceramsite and ceramsite prepared by same |
| CN112194417A (en) * | 2020-09-29 | 2021-01-08 | 陕西科技大学 | Foaming non-steamed building block based on gasified slag and preparation method thereof |
| CN112194417B (en) * | 2020-09-29 | 2022-07-08 | 山东世材新材料科技有限公司 | Foaming non-steamed building block based on gasified slag and preparation method thereof |
| CN113620675A (en) * | 2021-09-15 | 2021-11-09 | 包头市耀祥硕环保建材有限责任公司 | Environment-friendly brick produced by using industrial park waste discharge and preparation method thereof |
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Application publication date: 20161012 |