CN110065139A - A kind of steam press maintenance air-entrained concrete building block production technology - Google Patents
A kind of steam press maintenance air-entrained concrete building block production technology Download PDFInfo
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- CN110065139A CN110065139A CN201910295523.6A CN201910295523A CN110065139A CN 110065139 A CN110065139 A CN 110065139A CN 201910295523 A CN201910295523 A CN 201910295523A CN 110065139 A CN110065139 A CN 110065139A
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- building block
- concrete building
- entrained concrete
- press maintenance
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B1/00—Producing shaped prefabricated articles from the material
- B28B1/14—Producing shaped prefabricated articles from the material by simple casting, the material being neither forcibly fed nor positively compacted
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B11/00—Apparatus or processes for treating or working the shaped or preshaped articles
- B28B11/24—Apparatus or processes for treating or working the shaped or preshaped articles for curing, setting or hardening
- B28B11/245—Curing concrete articles
-
- 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
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/20—Mortars, concrete or artificial stone characterised by specific physical values for the density
-
- 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
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
Abstract
The present invention provides a kind of steam press maintenance air-entrained concrete building block production technologies, include the following steps: that mixed slurry is made in artificial quartz stone waste material, sand, lime, cement, gypsum and water by (a)；(b) it is passed through steam to mixed slurry, the temperature of mixed slurry is made to rise to 40 DEG C~45 DEG C, after stirring 3min~4min, foaming agent is added, casting slurry is made in stirring≤40s；(c) initial set of getting angry is carried out after casting slurry being poured into mould, green body is made；(d) green body demoulded, cut and steam press maintenance program, air-entrained concrete building block finished product is made.This production technology has the characteristics that artificial quartz stone waste material resource obtains that effective regeneration, to be conducive to environment, with short production cycle and final product quality high.
Description
Technical field
The present invention relates to a kind of steam press maintenance air-entrained concrete building block production technologies, belong to construction material manufacture field.
Background technique
Materials for wall major part or brick setting used in building at present, clay brick account for materials for wall total amount about 80% with
On, it every year in order to produce building brick, not only needs to occupy a large amount of arable land, but also if things go on like this, the Tu Yuan of brickmaking is increasingly withered
It exhausts, the ecological balance is destroyed, and cultivated area falls sharply, and resulting chain reaction is very harmful.And air-entrained concrete building block category
New Energy Saving Wall Materials in the first kind, fabulous insulation anti-seismic performance gradually replace clay brick with excellent performance, no
It is disconnected to expand application field.But for existing air-entrained concrete building block using quartz sand as primary raw material, consumed resource is big, is still easy
Cause resource exhaustion.The condition setting of the conventional maintenance of existing air-entrained concrete building block not enough optimizes, and curing cycle is long, influences
Production efficiency.
Using quartz manufacturing enterprise as representative, the artificial quartz stone amount of waste discharged every year is very surprising, and still lacks at present
Weary rationally effective regeneration method, so that tradition of the renewable substance based on filling in artificial quartz stone waste material
Mode is handled, and renewable resource is wasted, and brings undesirable influence to environment.
A kind of artificial quartz stone waste material resource how is obtained to obtain effective regeneration, be conducive to environment, production cycle
The air-entrained concrete building block production technology short, final product quality is high is current those skilled in the art's urgent problem to be solved.
Summary of the invention
In view of the foregoing drawbacks, it is an object of the invention to propose a kind of steam press maintenance air-entrained concrete building block production technology,
Obtain that effective regeneration, to be conducive to environment, with short production cycle and final product quality high with artificial quartz stone waste material resource
Feature.
To achieve this purpose, the present invention adopts the following technical scheme:
A kind of steam press maintenance air-entrained concrete building block production technology, includes the following steps:
(a) mixed slurry is made in artificial quartz stone waste material, sand, lime, cement, gypsum and water；
(b) it is passed through steam to mixed slurry, the temperature of mixed slurry is made to rise to 40 DEG C~45 DEG C, stir 3min~4min
Afterwards, foaming agent is added, casting slurry is made in stirring≤40s；
(c) initial set of getting angry is carried out after casting slurry being poured into mould, green body is made；
(d) green body demoulded, cut and steam press maintenance program, air-entrained concrete building block finished product is made.
Preferably, the steam press maintenance program of the step (d) includes the following stage:
Vacuumizing phase: air pressure keeps 0.5h under the conditions of being 0MPa~-0.06MPa；
The increasing temperature and pressure stage: input steam, air pressure is in 1.5h from -0.06MPa rises to 1.3MPa, temperature rises to
160 DEG C~180 DEG C；
The constant temperature and pressure stage: vapour pressure is maintained to keep 7.5h under conditions of 1.3MPa, temperature are 160 DEG C~180 DEG C；
The decrease temperature and pressure stage: discharge steam, air pressure is in 1.5h from 1.3MPa drops to 0MPa, temperature drops to room temperature.
Preferably, the quality of the artificial quartz stone waste material, sand, lime, cement, gypsum and each ingredient of water of the step (a)
Part is 28~32 parts of artificial quartz stone waste material, 8~12 parts of sand, 18~22 parts of lime, 7~9 parts of cement, 1~3 part of gypsum and water 42
~45.5 parts.
Preferably, the additional amount of the foaming agent of the step (b) is the 0.01%~0.14% of total mass of raw material.
Preferably, the step (b) also adds one of reinforcing agent and water-reducing agent or two while foaming agent is added
Kind, the additional amount of the reinforcing agent is the 0.01~2% of total mass of raw material, and the additional amount of the water-reducing agent is total mass of raw material
0.01~2%.
Preferably, dioxide-containing silica >=45% of the artificial quartz stone waste material, 0.045mm square hole screen screen over-size≤
30%, loss on ignition≤5%, sulfur trioxide content≤1%；
The sand is building sand, the content of dioxide-containing silica >=75% of the sand, potassium oxide and sodium oxide molybdena≤
3.5%, 0.15mm square hole screen screen over-size≤30%；
The efficient oxidation calcium of the lime and content >=65%, content≤8% of magnesia, the side 0.088mm of magnesia
Hole sizer screen over-size≤20%；
Content >=75%, 0.088mm square hole screen screen over-size≤15% of the active alkali sulfur calcium of the gypsum；
Content >=85%, 0.075mm square hole screen screen over-size≤3% of the active constituent of the foaming agent.
Preferably, the step (a) are as follows: artificial quartz stone waste material is by pretreatment: artificial quartz stone waste material is mixed with water
Artificial quartz stone slug is made in ball milling after conjunction；Sand is by pretreatment: mortar is made in ball milling after sand is mixed with water；Lime and stone
Cream is pre-processed: by formula rate combined grinding, it is 3500cm that fineness, which is made, for lime and gypsum2/ g~4000cm2/ g's is cementing
Feed powder；Artificial quartz stone slug, mortar, cementing feed powder and cement are mixed by formula ratio, stirs, mixing slurry is made
Material.
Preferably, the step (c) get angry initial set condition: at a temperature of 45 DEG C~55 DEG C stand 90min~150min.
Preferably, the length and width of the air-entrained concrete building block finished product and it is high be respectively 200mm~400mm, 100mm~
300mm and 200mm~300mm.
The beneficial effects of the present invention are: (1) present invention utilizes the titanium dioxide contained in artificial quartz stone waste material and sand
Silicon reacts with lime, cement and gypsum, forms concrete, and by the addition of foaming agent, makes to generate stomata in concrete,
Porous structure is formed, realizes heat insulation anti-shock performance, keeps manufactured air-entrained concrete building block final product quality up to standard, can be widely used for building
Industry is built, the resource regeneration of artificial quartz stone waste material is realized, is conducive to environmental protection；(2) optimization that the present invention is arranged
Steam press maintenance program is rationally arranged the temperature, pressure and time parameter in each stage, converts hydrated calcium silicate effectively,
The compactness extent of crystal structure effectively improves, and with the process of steam press maintenance, hydrated calcium silicate gel component aquation is complete,
The simplification of steam press maintenance program, energy conservation, time saving is realized while so that the intensity of finished product is further enhanced；(3) reinforcing agent is used
In the setting rate for adjusting casting slurry, air-entrained concrete building block product intensity is adjusted；Water-reducing agent is a kind of in maintenance concrete
Under conditions of the slump is basically unchanged, the additive of mixing water amount can be reduced, have after being added into the particle in mixture
Peptizaiton improves its workability, reduces water consumption, improves mobility, adjusts the strong of manufactured air-entrained concrete building block finished product
Degree；(4) mud that the present invention will generate during artificial quartz stone cutting and grinding and polishing, obtains through flocculation sedimentation and after being separated by filtration
Sludge be primary raw material, reducing Sludge landfill to environment bring pressure makes waste residue as widely used construction material
Also effective utilization has been obtained, also the recycling of the mud to generate during artificial quartz stone cutting and grinding and polishing provides a kind of new
Regeneration Ways；(5) lime and gypsum combined grinding are conducive to the raising of the efficiency of pretreatment of raw material, production equipment utilization rate
Raising and the saving of the energy；The two is pre-mixed the cementing feed powder to be formed, and the intensity of adjustable concrete is pre-mixed
Its bonding capacity can be effectively played, the intensity of air-entrained concrete building block finished product obtained is enable to reach expected.
Specific embodiment
In order to which technical characteristic of the invention, purpose and beneficial effect are more clearly understood, now to skill of the invention
Art scheme carries out described further below, but should not be understood as that limiting the scope of the invention.
The present invention provides a kind of steam press maintenance air-entrained concrete building block production technologies, include the following steps:
(a) mixed slurry is made in artificial quartz stone waste material, sand, lime, cement, gypsum and water；
(b) it is passed through steam to mixed slurry, the temperature of mixed slurry is made to rise to 40 DEG C~45 DEG C, stir 3min~4min
Afterwards, foaming agent is added, casting slurry is made in stirring≤40s；
(c) initial set of getting angry is carried out after casting slurry being poured into mould, green body is made；
(d) green body demoulded, cut and steam press maintenance program, air-entrained concrete building block finished product is made.
The present invention is occurred using the silica and lime, cement and gypsum contained in artificial quartz stone waste material and sand
Reaction forms concrete, and by the addition of foaming agent, makes to generate stomata in concrete, form porous structure, realizes heat-insulated anti-
Shock stability keeps manufactured air-entrained concrete building block final product quality up to standard in conjunction with the steam press maintenance program of optimization, shortens maintenance week
Phase, and then shorten the production cycle, which can be widely used for building trade, realize the resource regeneration benefit of artificial quartz stone waste material
With conducive to environmental protection.Existing air-entrained concrete building block is solved using quartz sand as primary raw material, consumed resource is big；It builds
The a large amount of artificial quartz stone waste materials generated in material industry production process are built to lack rationally effective regeneration and accumulate, wave
Take, undesirable influence is brought on environment；The condition setting of conventional maintenance not enough optimizes, the problem that curing cycle is grown.
Mixed slurry is fully warmed-up to foaming agent is just added after 40 DEG C~45 DEG C, is provided foaming agent and is got angry required temperature,
Promotion is got angry, suitably stir and evenly mix thereafter it is i.e. pourable, prevent addition foaming agent after excessive agitation and bubble is driven out of.Then enter
The casting slurry of mould is sufficiently got angry and solidification forming, is allowed to be formed the green body with some strength and porous structure.Finally
Steam press maintenance program by optimization is rationally arranged the temperature, pressure and time parameter in each stage, there is hydrated calcium silicate
Effect conversion, the compactness extent of crystal structure effectively improve, and with the process of steam press maintenance, hydrated calcium silicate gel is gradually
Aquation is complete, and the intensity of finished product is made to be further enhanced, steam press maintenance cycle time.
Further, the steam press maintenance program of step (d) includes the following stage:
Vacuumizing phase: air pressure keeps 0.5h under the conditions of being 0MPa~-0.06MPa；
The increasing temperature and pressure stage: input steam, air pressure is in 1.5h from -0.06MPa rises to 1.3MPa, temperature rises to
160 DEG C~180 DEG C；
The constant temperature and pressure stage: vapour pressure is maintained to keep 7.5h under conditions of 1.3MPa, temperature are 160 DEG C~180 DEG C；
The decrease temperature and pressure stage: discharge steam, air pressure is in 1.5h from 1.3MPa drops to 0MPa, temperature drops to room temperature.
The steam press maintenance program for the optimization that the present invention is arranged rationally is arranged the temperature, pressure and time parameter in each stage, makes
Hydrated calcium silicate is effectively converted, and the compactness extent of crystal structure effectively improves, with the process of steam press maintenance, water
Change calcium silicates gel element aquation is complete, and the letter of steam press maintenance program is realized while so that the intensity of finished product is further enhanced
Change, energy conservation, effectively shorten production cycle of air-entrained concrete building block, improves yield.
Vacuumizing phase takes air away, it is ensured that green body can be with the water of higher purity in the steam press maintenance stage below
Steam is contacted, and the conversion of the gelatinous mass in green body is effectively improved, and under the premise of guaranteeing maintenance quality, realizes that steam pressure is supported
The simplification of program is protected, while energy saving, time saving.The increasing temperature and pressure stage is to carry out after vacuumizing phase, and pressure is by steaming
The input of vapour is provided, and with the promotion of pressure, the vapour concentration touched around green body is bigger, purity is higher, is made in green body
Gelatinous mass accelerate conversion, form the biggish tobermorite of density and eakleite crystal phase, compactness extent increases.Work as temperature
Degree reach 160 DEG C~180 DEG C, vapour pressure in 1.3MPa, the conversion rate of green body reaches peak, therefore, in increasing temperature and pressure
After stage, the constant temperature and pressure stage is set, using the condition as the condition of constant temperature and pressure, and 7.5h is kept, to ensure jello
The abundant aquation of matter is complete, and the intensity of finished product obtained is made to be improved significantly.In the decrease temperature and pressure stage being then arranged, make at green body
In the state being slowly depressured, the stability of the aquation substance in green body is maintained, it is ensured that the effect of steam press maintenance, to realize steam pressure
The simplification of curing procedure, at the same it is energy saving, time saving.
Preferably, steam press maintenance process generates condensed water, collects condensed water, prepares in mixed slurry for step (a).It should
The water quality of condensed water is good, can be directly used for preparing mixed slurry to its cooling, improves the utilization rate of water, saves water resource.
Further, the mass parts of the artificial quartz stone waste material, sand, lime, cement, gypsum and each ingredient of water of step (a)
For 28~32 parts of artificial quartz stone waste material, 8~12 parts of sand, 18~22 parts of lime, 7~9 parts of cement, 1~3 part of gypsum and water 42~
45.5 parts.
Above-mentioned each composition proportion is reasonable, realizes raw material based on artificial quartz stone waste material, cooperates the use of sand, and stone is added
Ash, cement, gypsum, be conducive to subsequent green body during steam press maintenance it includes gelatinous mass acceleration conversion, in turn
It realizes and simplifies steam press maintenance program, and air-entrained concrete building block up to standard obtained simultaneously, can be widely used for building trade, it is real
Show the resource regeneration of artificial quartz stone waste material, is conducive to environmental protection.
Further, the additional amount of the foaming agent of step (b) is the 0.01%~0.14% of total mass of raw material.
Foaming agent makes to be poured slurry generation stomata, forms porous structure, manufactured finished weight is made to lighten, realize damping effect
Fruit.Preferably, foaming agent is aluminium powder foaming agent, and aluminium powder reacts under alkaline environment with water, and the hydrogen initially generated dissolves immediately
In liquid phase.Since the solubility of hydrogen is little, solution quickly reaches supersaturation.When reaching certain degree of supersaturation, in aluminium
Powder pellet surface forms one or several nuclei of bubbles, and due to the gradually accumulation of hydrogen, bubble inner pressure power is gradually increased, when interior pressure
Overcome upper slurry to its gravity and the ultimate shearing stress of slurry after, bubble parameters push slurry expand upwards.Bubble is long
Pressure reduction in after big, expansion are bordering on stopping；But since hydrogen is continuously replenished, interior pressure increases again, and bubble is further grown up,
Finally expand concrete further.
Further, step (b) also adds one or both of reinforcing agent and water-reducing agent while foaming agent is added,
The additional amount of reinforcing agent is the 0.01~2% of total mass of raw material, and the additional amount of water-reducing agent is the 0.01~2% of total mass of raw material.
Reinforcing agent is used to adjust the setting rate of casting slurry, adjusts air-entrained concrete building block product intensity；Water-reducing agent is
One kind can be reduced the additive of mixing water amount under conditions of maintaining concrete slump to be basically unchanged, right after being added into
Particle in mixture has peptizaiton, improves its workability, reduces water consumption, improves mobility, and it is mixed to adjust manufactured aerating
The intensity of solidifying earth building blocks finished product.Preferably, water-reducing agent is lignosulfonates or naphthalene sulphonate formaldehyde polymer.This aerating coagulation
Earth building blocks, can be according to the demand of the intensity of finished product, the addition of appropriate adjustment reinforcing agent and water-reducing agent in production process
Amount.
Further, dioxide-containing silica >=45% of artificial quartz stone waste material, 0.045mm square hole screen screen over-size≤
30%, loss on ignition≤5%, sulfur trioxide content≤1%；
Sand is building sand, dioxide-containing silica >=75% of sand, potassium oxide and sodium oxide molybdena content≤3.5%,
0.15mm square hole screen screen over-size≤30%；
The efficient oxidation calcium and content >=65% of magnesia, content≤8% of magnesia, the 0.088mm square hole screen of lime
Screen over-size≤20%；
Content >=75%, 0.088mm square hole screen screen over-size≤15% of the active alkali sulfur calcium of gypsum；
Content >=85%, 0.075mm square hole screen screen over-size≤3% of the active constituent of foaming agent.
Artificial quartz stone in process of production, can generate a large amount of waste material.And these waste materials are still with the processing mode of landfill
Based on, resource does not obtain most adequately utilizing.And body feed composition of the invention --- artificial quartz stone waste material makes artificial
Hydration reaction occurs for silica and lime, cement and the gypsum being rich in quartz waste material, forms concrete, is finally made
Air-entrained concrete building block, as widely used construction material.
Further, artificial quartz stone waste material is the mud of generation during artificial quartz stone cutting and grinding and polishing, through flocculating
The sludge for precipitating and being obtained after being separated by filtration.Artificial quartz stone cutting and grinding and polishing during generate mud, generally with waste water one
With wastewater treatment is carried out, the sludge for separating acquisition thereafter, which does not obtain, rationally to be utilized, still based on the processing mode of landfill, money
Source does not obtain most adequately utilizing.Artificial quartz stone waste material of the present invention is above-mentioned sludge, reduces Sludge landfill and brings to environment
Pressure, while the silica being rich in sludge being made full use of to react with lime, cement and gypsum, formation coagulation
Soil, the air-entrained concrete building block being finally made make sludge also obtain effective benefit as widely used construction material
With also the recycling of the mud to generate during artificial quartz stone cutting and grinding and polishing provides a kind of new Regeneration Ways.
Foaming agent makes to be poured slurry generation stomata, forms porous structure, makes the weight of finished product obtained, realize heat preservation
Damping effect.Preferably, foaming agent is aluminium powder foaming agent, and aluminium powder reacts under alkaline environment with water, and the hydrogen initially generated is vertical
It is dissolved in liquid phase.Since the solubility of hydrogen is little, solution quickly reaches supersaturation.When reaching certain degree of supersaturation
When, one or several nuclei of bubbles are formed on aluminium powder pellet surface, due to the gradually accumulation of hydrogen, bubble inner pressure power is gradually increased,
When internal pressure power overcome upper slurry to its gravity and the ultimate shearing stress of slurry after, bubble parameters push slurry it is swollen upwards
It is swollen.Interior pressure reduction after bubble parameters, expansion are bordering on stopping；But since hydrogen is continuously replenished, interior pressure increases again, bubble into
One step-length is big, finally expands concrete further.
Further, step (a) are as follows: artificial quartz stone waste material is by pretreatment: artificial quartz stone waste material is mixed with water
Artificial quartz stone slug is made in ball milling afterwards；Sand is by pretreatment: mortar is made in ball milling after sand is mixed with water；Lime and gypsum
Pre-processed: by formula rate combined grinding, it is 3500cm that fineness, which is made, for lime and gypsum2/ g~4000cm2The cementitious matter of/g
Powder；Artificial quartz stone slug, mortar, cementing feed powder and cement are mixed by formula ratio, stirs, mixed slurry is made.
Artificial quartz stone waste material, sand, lime and gypsum are pre-processed, and feed particles is made to reach the fineness of target, are adjusted
The quality of mixed slurry improves the intensity of manufactured air-entrained concrete building block.The feed particles mistake of artificial quartz stone waste material and sand
Greatly, it needs to add water for ball milling, its fineness is made to meet the demand used, form artificial quartz stone slug and mortar.Lime and gypsum
Combined grinding is conducive to the raising of the efficiency of pretreatment of raw material, the raising of production equipment utilization rate and the saving of the energy；The two
Be pre-mixed the cementing feed powder to be formed, the intensity of adjustable concrete, its bonding capacity can effectively be played by being pre-mixed, and make to make
The intensity of the air-entrained concrete building block finished product obtained can reach expected.
Cementing feed powder and cement are dry powder, and artificial quartz stone slug and mortar are aqueous slurry, by adjusting artificial stone
The water content of diamond stone slug and mortar, and then the solid content of mixed slurry that adjusting is mixed to get, make mixed slurry
Mobility is relatively mild, be conducive to particle in mixed slurry and subsequent addition foaming agent cooperation get angry after, it is suitable to be formed
Stomatal frequency makes air-entrained concrete building block finished product obtained take into account heat preservation damping and intensity.
Further, step (c) get angry initial set condition: at a temperature of 45 DEG C~55 DEG C stand 90min~150min.
Casting slurry after making mould is stood at a temperature of being in 45 DEG C~55 DEG C, makes foaming agent can be gently in concrete
It gets angry；Time is 90min~150min, it is ensured that foaming agent is got angry sufficiently, obtains this air-entrained concrete building block enough
Stomata, realize the heat insulation anti-shock performance of this air-entrained concrete building block.
Further, the length and width of air-entrained concrete building block finished product and high respectively 200mm~400mm, 100mm~300mm
With 200mm~300mm.
So that air-entrained concrete building block finished product is more convenient for paving, be more able to satisfy use demand, is conducive to this air-entrained concrete building block
Finished product is easy to maintain the integrality of brick body in the porous structure, and the intensity for the wall bonded can comply with standard, more durable.
Embodiment group
Air-entrained concrete building block finished product is prepared using steam press maintenance air-entrained concrete building block production technology, including is walked as follows
It is rapid:
(a) it by artificial quartz stone waste material, sand, lime, gypsum and water by pre-processing, and is mixed with cement by formula ratio
It closes, mixed slurry is made in stirring；Artificial quartz stone waste material, sand, lime, gypsum, cement and water additional amount according to the form below one set
It sets；
(b) it is passed through steam to mixed slurry, the temperature of mixed slurry is made to rise to 45 DEG C, after stirring 4min, addition is got angry
Agent stirs 40s, casting slurry is made；The additional amount according to the form below one of foaming agent is arranged；
(c) casting slurry is poured into after mould initial set of getting angry, green body is made；Get angry initial set specific setting temperature and standing
Time according to the form below two is arranged；
(d) green body demoulded, cut and steam press maintenance program, air-entrained concrete building block finished product is made；Steam press maintenance
Program:
Vacuumizing phase: air pressure keeps 0.5h under the conditions of being 0MPa~-0.06MPa；
The increasing temperature and pressure stage: input steam, air pressure is in 1.5h from -0.06MPa rises to 1.3MPa, temperature rises to
160 DEG C~180 DEG C；
The constant temperature and pressure stage: vapour pressure is maintained to keep 7.5h under conditions of 1.3MPa, temperature are 160 DEG C~180 DEG C；
The decrease temperature and pressure stage: discharge steam, air pressure is in 1.5h from 1.3MPa drops to 0MPa, temperature drops to room temperature.
Table is arranged in one embodiment group component content of table
| Component content | Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Embodiment 5 |
| Artificial quartz stone waste material (g) | 28 | 29 | 30 | 31 | 32 |
| Sand (g) | 12 | 11 | 10 | 9 | 8 |
| Lime (g) | 21 | 18 | 20 | 22 | 19 |
| Gypsum (g) | 2 | 2.5 | 1.5 | 3 | 1 |
| Cement (g) | 8 | 7.5 | 7 | 8.5 | 9 |
| Water (g) | 44 | 42 | 43 | 45.5 | 45 |
| Foaming agent (%) | 0.01 | 0.03 | 0.07 | 0.11 | 0.14 |
Two embodiment group of table is got angry pre-hardening condition setting table
| Component content | Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Embodiment 5 |
| Temperature (DEG C) | 45 | 48 | 50 | 52 | 55 |
| Time of repose (min) | 90 | 105 | 120 | 135 | 150 |
Embodiment 1-5 is prepared according to the method described above, the various embodiments described above are tested for the property, and test result is as follows
Table three:
Three embodiment group performance test of table
As shown in Table 3, the air-entrained concrete building block finished product obtained in above-described embodiment 1-5 is tested for the property, it is every
Test result table as above, it was demonstrated that the air-entrained concrete building block finished product prepared using steam press maintenance air-entrained concrete building block production technology
The B07 standard that can reach GB/T11968-2006 " autoclave aerated concrete building block ", realize the sharp again of artificial quartz stone waste material
With.
The technical principle of the invention is described above in combination with a specific embodiment.These descriptions are intended merely to explain of the invention
Principle, and shall not be construed in any way as a limitation of the scope of protection of the invention.Based on the explanation herein, the technology of this field
Personnel can associate with other specific embodiments of the invention without creative labor, these modes are fallen within
Within protection scope of the present invention.
Claims (9)
1. a kind of steam press maintenance air-entrained concrete building block production technology, characterized by the following steps:
(a) mixed slurry is made in artificial quartz stone waste material, sand, lime, cement, gypsum and water；
(b) it is passed through steam to mixed slurry, the temperature of mixed slurry is made to rise to 40 DEG C~45 DEG C, after stirring 3min~4min,
Foaming agent is added, casting slurry is made in stirring≤40s；
(c) initial set of getting angry is carried out after casting slurry being poured into mould, green body is made；
(d) green body demoulded, cut and steam press maintenance program, air-entrained concrete building block finished product is made.
2. steam press maintenance air-entrained concrete building block production technology according to claim 1, it is characterised in that: the step
(d) steam press maintenance program includes the following stage:
Vacuumizing phase: air pressure keeps 0.5h under the conditions of being 0MPa~-0.06MPa；
The increasing temperature and pressure stage: input steam, air pressure rises to 1.3MPa from -0.06MPa in 1.5h, temperature rises to 160 DEG C
~180 DEG C；
The constant temperature and pressure stage: vapour pressure is maintained to keep 7.5h under conditions of 1.3MPa, temperature are 160 DEG C~180 DEG C；
The decrease temperature and pressure stage: discharge steam, air pressure is in 1.5h from 1.3MPa drops to 0MPa, temperature drops to room temperature.
3. steam press maintenance air-entrained concrete building block production technology according to claim 1, it is characterised in that: the step
(a) artificial quartz stone waste material, sand, lime, cement, gypsum and each ingredient of water mass parts be artificial quartz stone waste material 28~32
Part, 8~12 parts of sand, 18~22 parts of lime, 7~9 parts of cement, 1~3 part of gypsum and 42~45.5 parts of water.
4. steam press maintenance air-entrained concrete building block production technology according to claim 1, it is characterised in that: the step
(b) additional amount of foaming agent is the 0.01%~0.14% of total mass of raw material.
5. steam press maintenance air-entrained concrete building block production technology according to claim 4, it is characterised in that: the step
(b) one or both of reinforcing agent and water-reducing agent are also added while foaming agent is added, the additional amount of the reinforcing agent is
The 0.01~2% of total mass of raw material, the additional amount of the water-reducing agent are the 0.01~2% of total mass of raw material.
6. steam press maintenance air-entrained concrete building block production technology according to claim 4, it is characterised in that: the artificial stone
Dioxide-containing silica >=45%, 0.045mm square hole screen screen over-size≤30%, loss on ignition≤5%, the sulfur trioxide of diamond stone waste material contain
Amount≤1%；
The sand is building sand, dioxide-containing silica >=75% of the sand, potassium oxide and sodium oxide molybdena content≤3.5%,
0.15mm square hole screen screen over-size≤30%；
The efficient oxidation calcium and content >=65% of magnesia, content≤8% of magnesia, the 0.088mm square hole screen of the lime
Screen over-size≤20%；
Content >=75%, 0.088mm square hole screen screen over-size≤15% of the active alkali sulfur calcium of the gypsum；
Content >=85%, 0.075mm square hole screen screen over-size≤3% of the active constituent of the foaming agent.
7. steam press maintenance air-entrained concrete building block production technology according to claim 4, it is characterised in that: the step
(a) are as follows: artificial quartz stone waste material is by pretreatment: artificial quartz stone is made in ball milling after artificial quartz stone waste material is mixed with water
Slug；Sand is by pretreatment: mortar is made in ball milling after sand is mixed with water；Lime and gypsum are pre-processed: lime and gypsum
By formula rate combined grinding, it is 3500cm that fineness, which is made,2/ g~4000cm2The cementing feed powder of/g；By artificial quartz stone waste material
Slurry, mortar, cementing feed powder and cement are mixed by formula ratio, and mixed slurry is made in stirring.
8. steam press maintenance air-entrained concrete building block production technology according to claim 1, it is characterised in that: the step
(c) get angry initial set condition: at a temperature of 45 DEG C~55 DEG C stand 90min~150min.
9. steam press maintenance air-entrained concrete building block production technology according to claim 1, it is characterised in that: the aerating is mixed
The length and width of solidifying earth building blocks finished product and high respectively 200mm~400mm, 100mm~300mm and 200mm~300mm.
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