A kind of maintenance process of cement products
【Technical field】
The present invention relates to cement products technical field, and in particular to a kind of maintenance process of cement products.
【Background technology】
Cement is widely used in building trade as the main component of building gel rubber material.Cement products was solidifying
Maintenance in journey directly influences the quality of cement products, and traditional maintenance process to cement products is mostly in cement system
Product pour shaping relief its natural cooling, and then carrying out water spray to cement products again drenches, but some cement products thickness is too
Greatly, along with the constitutive material water imbibition of cement products is not strong, cause moisture can not penetrate into the depths of cement products, cause water
Mud product, because water shortage produces contraction, is internally formed hole or desertification, and then reduce cement system during coagulation forming
The intensity of product, there are certain potential safety hazard, severe patient is also after so underproof cement products is applied into infrastructure
The generation of major accident can be caused.Therefore, cement products needs to conserve well after shaping is poured just can guarantee that cement products
Quality, nowadays occur in that many cement products curing agent, sealing compound be sprayed at the surface of cement products to cement system
Product are conserved and moisturizing, but effect is not so well, and it is desirable to a kind of maintenance process of more preferable cement products.
【The content of the invention】
It is an object of the invention to:It is bad for existing cement products curing method effect, cause obtained cement products
The problem of quality is not good is there is provided a kind of maintenance process of cement products, and the cement products intensity that the maintenance process is obtained is high, quality
It is good.
To achieve these goals, the technical solution adopted by the present invention is as follows:
A kind of maintenance process of cement products, comprises the following steps:
(1) constitutive material of cement products include it is modified montmorillonite used, it is described modified montmorillonite used to occupy whole raw material gross weight
15-25%, then by each raw material of cement products and water according to mass ratio 1:2.5-2.8 being put into mixer, mix
Uniformly, then mixture is poured into mould;
(2) cement products not being stripped is put into fog room and once conserved, by dynamic in a maintenance processes
Power apparatus keeps cement products to do uniform circular motion around fog room, and the pressure for keeping fog room is 0.5-0.8MPa, toward water
Mud product sprays sealing compound, and then leading to steam toward fog room carries out steam curing to cement products, and the steam-cured time is 1-2
Hour, each steam curing sprays sealing compound toward cement products again after terminating, and steam curing is then carried out again, and so on 2-3
Secondary, once maintenance terminates, and is then stripped;
(3) cement products after the demoulding is rested on into fog room, then carries out secondary maintenance, secondary maintenance stops steam and supported
Shield, the pressure that fog room is kept in secondary maintenance processes is 0.3-0.5MPa, and temperature is 35-45 DEG C, during secondary maintenance every
2-3 hour water drenches cement products, and the time of secondary maintenance is 8-10 hours;
(4) after secondary maintenance terminates, cement products is stood outdoor, its natural cooling is allowed, until shaping.
Wherein, the sealing compound is made up of the raw material of following parts by weight:12-18 parts of kaolin, 12-18 parts of flyash, stone
15-20 parts of ashes, 15-20 parts of talcum powder, 50-80 parts of sodium silicate aqueous solution, 15-20 parts of acetone, 20-30 parts of ethylenediamine, silicon are molten
6-10 parts of glue, 5-10 parts of sodium thiosulfate, 10-15 parts of diatomite, 8-16 parts of sodium carbonate, 2-4 parts of calcium nitrate, calcium formate water solution
20-30 parts.
In the present invention, further, the preparation method of the sealing compound is:A) in parts by weight, by the kaolinite
Soil, flyash, pulverized limestone, talcum powder mixing are put into grinder and wear into mixed-powder, and the particle diameter for making mixed-powder is 0.8-
1.2mm, then by mixed-powder, calcining is put into sodium silicate aqueous solution rapidly after 1-2 hours at a temperature of 400-450 DEG C, is stirred
Mix and be cooled fast to normal temperature to after being completely dissolved, obtain mixed solution;B) temperature of mixed solution is raised to 60-70 DEG C, addition by
Sodium thiosulfate, diatomite, sodium carbonate, calcium nitrate, stirring be completely dissolved after stop heating, finally add acetone, ethylenediamine,
Ludox, calcium formate water solution, stir to normal temperature, produce sealing compound.
In the present invention, further, the modified montmorillonite used preparation method is:A) in parts by weight, by 25-40
Part acrylamide is mixed with 50-80 parts of distilled water, and stirring is completely dissolved acrylamide, then toward molten under the conditions of frozen water cooling
The pH of sodium hydrate regulator solution is added in liquid to neutrality, 25-40 parts of acrylic acid, 15-30 parts of montmorillonites is sequentially added, has stirred
5-10 parts of sodium peroxydisulfates, the double acrylic esters of 5-10 parts of ethylene glycol are sequentially added after fully dissolved, mixture are put after stirring
It is molded in micro-wave oven with microwave radiation, the time of radiation is 1-2 hours;B) by the product obtained in step a) anhydrous
Soaked 0.5-1 hours in ethanol, be then placed in dryer and dried 3-4 hours at 70-80 DEG C, by the product after drying
Clay into power shape, produce modified montmorillonite used after being crushed with pulverizer.
In the present invention, further, in step (4), the cement products is placed in behind outdoor, and cement products is entered daily
Row water drenching, continues 5-7 days.
In the present invention, further, during secondary maintenance, the humidity for keeping fog room is 50-60%.
In the present invention, further, the type of cooling in step a) is that the container for filling mixed solution is put into frozen water
It is middle to be cooled down.
In summary, by adopting the above-described technical solution, the beneficial effects of the invention are as follows:
1st, the maintenance process of cement products of the invention, added in the preparation process of cement products it is modified montmorillonite used,
Montmorillonite by dissolving, immersion, radiation, drying after, with very strong absorptive and water-retaining property, it is modified montmorillonite used can be in water
The coagulation forming stage of mud product suppresses the volatilization of moisture well, moisture is utilized well;Meanwhile, cement products exists
Once the maintenance stage maintains coordinates the at the uniform velocity movement of cement products to reduce in cement products under higher pressure, High Voltage
The generation of portion's hole, then cement products progress moisturizing and sprinkling sealing compound are filled out to cement products progress hole by steam maintenance
Mend, under each step is mutually coordinated, can make cement products that there is very high intensity after being molded, total quality is more preferably.
2nd, the maintenance process of cement products of the invention, in sealing compound, with kaolin, flyash, pulverized limestone, talcum powder
As the solute for filling up hole and sand holes, the mixed solution that sodium silicate aqueous solution is obtained is dissolved into, possesses stronger osmotic effect,
But cementitiousness is weaker after solute is separated out, being separated out even if solute at hole can not also be bonded to one with cement products, because
And the curing agent constituted with acetone, ethylenediamine, Ludox is added, solute can be allowed in precipitation with good caking property, and
Can promote its setting rate, but add can make after curing agent solute atoms mutually bond in the solution under make composition particles
Particle diameter increases, and causes solute can not follow the less hole of solvent entrance aperture, thus adds with sodium thiosulfate, diatom
Soil, sodium carbonate, the blender of calcium nitrate composition, can allow the composition particles being bonded together to have and shrink elasticity well, and
Calcium formate water solution is used for the mobility for promoting solution, under each mutually coordinated effect of composition, the effect of sealing compound is obtained fully
Play.
3rd, the maintenance process of cement products of the invention, a variety of curing steps cooperate under coordination, can allow final
Obtained cement products has very high intensity, internal imporosity, surfacing, flawless without sand holes, and total quality is good, and this is supported
Maintaining method is practical, is adapted to promote in this area.
【Embodiment】
Embodiment 1:
A kind of maintenance process of cement products, comprises the following steps:
(1) constitutive material of cement products include it is modified montmorillonite used, it is described modified montmorillonite used to occupy whole raw material gross weight
15%, then by each raw material of cement products and water according to mass ratio 1:2.5 are put into mixer, are mixed evenly, so
Mixture is poured into mould afterwards;
(2) cement products not being stripped is put into fog room and once conserved, by dynamic in a maintenance processes
Power apparatus keeps cement products to do uniform circular motion around fog room, and the pressure for keeping fog room is 0.5MPa, toward cement system
Product spray sealing compound, and then leading to steam toward fog room carries out steam curing to cement products, and the steam-cured time is 1 hour,
Each steam curing sprays sealing compound toward cement products again after terminating, and steam curing is then carried out again, and so on 2 times, once
Maintenance terminates, and is then stripped;
(3) cement products after the demoulding is rested on into fog room, then carries out secondary maintenance, secondary maintenance stops steam and supported
The pressure that fog room is kept in shield, secondary maintenance processes is 0.3MPa, and temperature is 35 DEG C, and humidity is 50%, during secondary maintenance
Cement products was drenched with water every 2 hours, the time of secondary maintenance is 8 hours;
(4) after secondary maintenance terminates, cement products is stood outdoor, its natural cooling is allowed, until shaping, during which right daily
Cement products carries out water drenching, continues 5 days.
Wherein, the sealing compound is made up of the raw material of following parts by weight:12 parts of kaolin, 12 parts of flyash, pulverized limestone 15
Part, 15 parts of talcum powder, 50 parts of sodium silicate aqueous solution, 15 parts of acetone, 20 parts of ethylenediamine, 6 parts of Ludox, 5 parts of sodium thiosulfate, silicon
10 parts of diatomaceous earth, 8 parts of sodium carbonate, 2 parts of calcium nitrate, 20 parts of calcium formate water solution.The preparation method of the sealing compound is:A) according to
Parts by weight meter, the kaolin, flyash, pulverized limestone, talcum powder are mixed to be put into grinder and wear into mixed-powder, makes mixing
The particle diameter of powder is 0.8mm, and then by mixed-powder, rapid after calcining 1 hour at a temperature of 400 DEG C to be put into sodium metasilicate water-soluble
In liquid, stirring is cooled fast to normal temperature to after being completely dissolved with frozen water, obtains mixed solution;B) is by the temperature liter of mixed solution
To 60 DEG C, sodium thiosulfate, diatomite, sodium carbonate, calcium nitrate are added, stirring stops heating after being completely dissolved, finally added
Acetone, ethylenediamine, Ludox, calcium formate water solution, stir to normal temperature, produce sealing compound.
Wherein, the modified montmorillonite used preparation method is:A) in parts by weight, by 25 parts of acrylamides and 50 parts
Distilled water is mixed, and stirring is completely dissolved acrylamide, is then adjusted under the conditions of frozen water cooling toward addition sodium hydroxide in solution
The pH of solution is saved to neutrality, 25 parts of acrylic acid, 15 parts of montmorillonites are sequentially added, stirring sequentially adds 5 parts of mistakes after being completely dissolved
Mixture, is put into micro-wave oven and is molded with microwave radiation by sodium sulphate, the double acrylic esters of 5 parts of ethylene glycol after stirring, spoke
The time penetrated is 1 hour;B) soaks the product obtained in step a) 0.5 hour in absolute ethyl alcohol, is then placed on baking
Dried 3 hours at 70 DEG C in dry machine, shape of being clayed into power after the product after drying is crushed with pulverizer, produce modified cover and take off
Stone.
Embodiment 2:
A kind of maintenance process of cement products, comprises the following steps:
(1) constitutive material of cement products include it is modified montmorillonite used, it is described modified montmorillonite used to occupy whole raw material gross weight
20%, then by each raw material of cement products and water according to mass ratio 1:2.65 are put into mixer, are mixed evenly, so
Mixture is poured into mould afterwards;
(2) cement products not being stripped is put into fog room and once conserved, by dynamic in a maintenance processes
Power apparatus keeps cement products to do uniform circular motion around fog room, and the pressure for keeping fog room is 0.65MPa, toward cement system
Product spray sealing compound, and then leading to steam toward fog room carries out steam curing to cement products, and the steam-cured time is 1.5 small
When, each steam curing sprays sealing compound toward cement products again after terminating, and steam curing is then carried out again, and so on 2 times, one
Secondary maintenance terminates, and is then stripped;
(3) cement products after the demoulding is rested on into fog room, then carries out secondary maintenance, secondary maintenance stops steam and supported
The pressure that fog room is kept in shield, secondary maintenance processes is 0.4MPa, and temperature is 40 DEG C, and humidity is 55%, during secondary maintenance
Cement products was drenched with water every 2.5 hours, the time of secondary maintenance is 9 hours;
(4) after secondary maintenance terminates, cement products is stood outdoor, its natural cooling is allowed, until shaping, during which right daily
Cement products carries out water drenching, continues 6 days.
Wherein, the sealing compound is made up of the raw material of following parts by weight:15 parts of kaolin, 15 parts of flyash, pulverized limestone
17.5 parts, 17.5 parts of talcum powder, 65 parts of sodium silicate aqueous solution, 17.5 parts of acetone, 20 parts of ethylenediamine, 8 parts of Ludox, thiosulfuric acid
7.5 parts of sodium, 12.5 parts of diatomite, 12 parts of sodium carbonate, 3 parts of calcium nitrate, 25 parts of calcium formate water solution.The preparation side of the sealing compound
Method is:A) in parts by weight, by the kaolin, flyash, pulverized limestone, talcum powder mix be put into grinder wear into it is mixed
Powder is closed, the particle diameter for making mixed-powder is 1mm, then calcining is put rapidly after 1.5 hours at a temperature of 425 DEG C by mixed-powder
Enter in sodium silicate aqueous solution, stirring is cooled fast to normal temperature to after being completely dissolved with frozen water, obtains mixed solution;B) will be mixed
The temperature of solution is raised to 65 DEG C, adds sodium thiosulfate, diatomite, sodium carbonate, calcium nitrate, and stirring stops adding after being completely dissolved
Heat, finally adds acetone, ethylenediamine, Ludox, calcium formate water solution, stirs to normal temperature, produces sealing compound.
Wherein, the modified montmorillonite used preparation method is:A) in parts by weight, by 33 parts of acrylamides and 65 parts
Distilled water is mixed, and stirring is completely dissolved acrylamide, is then adjusted under the conditions of frozen water cooling toward addition sodium hydroxide in solution
The pH of solution is saved to neutrality, 33 parts of acrylic acid, 23 parts of montmorillonites are sequentially added, stirring sequentially adds 7.5 parts after being completely dissolved
The double acrylic esters of sodium peroxydisulfate, 7.5 parts of ethylene glycol, after stirring by mixture be put into micro-wave oven with microwave radiation into
Type, the time of radiation is 1.5 hours;B) soaks the product obtained in step a) 0.75 hour in absolute ethyl alcohol, then will
It is placed in dryer is dried 3.5 hours at 75 DEG C, and shape of being clayed into power after the product after drying is crushed with pulverizer is produced
It is modified montmorillonite used.
Embodiment 3:
A kind of maintenance process of cement products, comprises the following steps:
(1) constitutive material of cement products include it is modified montmorillonite used, it is described modified montmorillonite used to occupy whole raw material gross weight
25%, then by each raw material of cement products and water according to mass ratio 1:2.8 are put into mixer, are mixed evenly, so
Mixture is poured into mould afterwards;
(2) cement products not being stripped is put into fog room and once conserved, by dynamic in a maintenance processes
Power apparatus keeps cement products to do uniform circular motion around fog room, and the pressure for keeping fog room is 0.8MPa, toward cement system
Product spray sealing compound, and then leading to steam toward fog room carries out steam curing to cement products, and the steam-cured time is 2 hours,
Each steam curing sprays sealing compound toward cement products again after terminating, and steam curing is then carried out again, and so on 3 times, once
Maintenance terminates, and is then stripped;
(3) cement products after the demoulding is rested on into fog room, then carries out secondary maintenance, secondary maintenance stops steam and supported
The pressure that fog room is kept in shield, secondary maintenance processes is 0.5MPa, and temperature is 45 DEG C, and humidity is 60%, during secondary maintenance
Cement products was drenched with water every 3 hours, the time of secondary maintenance is 10 hours;
(4) after secondary maintenance terminates, cement products is stood outdoor, its natural cooling is allowed, until shaping, during which right daily
Cement products carries out water drenching, continues 7 days.
Wherein, the sealing compound is made up of the raw material of following parts by weight:18 parts of kaolin, 18 parts of flyash, pulverized limestone 20
Part, 20 parts of talcum powder, 80 parts of sodium silicate aqueous solution, 20 parts of acetone, 30 parts of ethylenediamine, 10 parts of Ludox, 10 parts of sodium thiosulfate,
15 parts of diatomite, 16 parts of sodium carbonate, 4 parts of calcium nitrate, 30 parts of calcium formate water solution.The preparation method of the sealing compound is:A) is pressed
According to parts by weight meter, the kaolin, flyash, pulverized limestone, talcum powder are mixed to be put into grinder and wear into mixed-powder, makes to mix
The particle diameter for closing powder is 1.2mm, and then by mixed-powder, calcining is put into sodium metasilicate water rapidly after 2 hours at a temperature of 450 DEG C
In solution, stirring is cooled fast to normal temperature to after being completely dissolved with frozen water, obtains mixed solution;B) is by the temperature of mixed solution
70 DEG C are raised to, sodium thiosulfate, diatomite, sodium carbonate, calcium nitrate is added, stirring stops heating after being completely dissolved, finally added again
Enter acetone, ethylenediamine, Ludox, calcium formate water solution, stir to normal temperature, produce sealing compound.
Wherein, the modified montmorillonite used preparation method is:A) in parts by weight, by 40 parts of acrylamides and 80 parts
Distilled water is mixed, and stirring is completely dissolved acrylamide, is then adjusted under the conditions of frozen water cooling toward addition sodium hydroxide in solution
The pH of solution is saved to neutrality, 40 parts of acrylic acid, 30 parts of montmorillonites are sequentially added, stirring sequentially adds 10 parts of mistakes after being completely dissolved
Mixture, is put into micro-wave oven and is molded with microwave radiation by sodium sulphate, the double acrylic esters of 10 parts of ethylene glycol after stirring, spoke
The time penetrated is 2 hours;B) soaks the product obtained in step a) 1 hour in absolute ethyl alcohol, is then placed on drying
Dried 4 hours at 80 DEG C in machine, shape of being clayed into power after the product after drying is crushed with pulverizer is produced modified montmorillonite used.
In order to further prove the characteristic of the present invention, following contrast test is now done:
Contrast groups 1:In the raw material composition of cement products, remove modified montmorillonite used, remaining mode is in strict accordance with embodiment 2
Carry out.
Contrast groups 2:In a maintenance processes, remove sprinkling sealing compound, remaining mode is carried out in strict accordance with embodiment 2.
Contrast groups 3:In a maintenance processes, remove steam curing, remaining mode is carried out in strict accordance with embodiment 2.
The specification of cement products is set as 70cm*60cm*7cm, the cement system for taking contrast groups 1-3 and embodiment 1-3 to be made
Product sample, determines each data, obtained data such as following table:
By upper table as can be seen that the maintenance process of the cement products of the present invention, inside the cement products finally given with
Surface is smooth, without sand holes, and overall load weight is higher, and toughness is preferably, practical, is adapted to promote in this area.
Described above is the detailed description for the present invention preferably possible embodiments, but embodiment is not limited to this hair
The equal change or modification change completed under bright patent claim, the technical spirit suggested by all present invention, all should belong to
Cover the scope of the claims in the present invention.