CN109879647A - The preparation method of cement-base composite material - Google Patents
The preparation method of cement-base composite material Download PDFInfo
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- CN109879647A CN109879647A CN201910239578.5A CN201910239578A CN109879647A CN 109879647 A CN109879647 A CN 109879647A CN 201910239578 A CN201910239578 A CN 201910239578A CN 109879647 A CN109879647 A CN 109879647A
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Abstract
The present invention proposes a kind of preparation method of cement-base composite material, include the following steps: to mix the component of cement-base composite material, the component of the cement-base composite material includes cementitious material, aggregate, water, steel fibre, water-reducing agent and defoaming agent, wherein, the cementitious material includes cement and silicon powder, the mass ratio of the silicon powder and the cement is 7%~15%, and the mass ratio of the water and the cementitious material is 0.12~0.3；The slurry being stirred is poured into mold；It is flat that shake is carried out to the surface of slurry in the mold；Stand the sealed maintenance predetermined time；And the mold and at room temperature is removed, it sprays water or is maintained under conditions of humidity > 95%.The cubic compressive strength of the cement-base composite material component of the preparation method manufacture of above-mentioned cement-base composite material is high, is greater than marmorean compression strength, and curing condition is mild, and environmental pollution is small, is not required to carry out additional processing, conveniently install and use and at low cost.
Description
Technical field
The present invention relates to cement-based material preparation field, especially a kind of easy to process and compression strength is greater than marmorean
The preparation method of cement-base composite material.
Background technique
In process equipment, usually the higher marble of use intensity, steel plate or cast iron as the mounting plate of equipment, base cabinet,
The supporting members such as column, the materials such as marble, steel plate, cast iron it is at high cost, need to be cut accordingly according to position, bore
The process such as hole, set of having a denture made, corase grinding, fine grinding, plating, release stress ageging is long and is easy to appear precision problem, steel plate, cast iron
Equal materials are easily corroded as components such as equipment bays in the case where cold working is used, and cause to seriously affect to equipment precision.On and
Have certain destruction to environment when stating material production component, and the manufacture of traditional cement-base composite material need at high temperature into
Row maintenance, should not promote the use of a large area.
Summary of the invention
In view of the above situation, it is necessary to the easy to process and compression strength of one kind is provided and be greater than marmorean cement base composite wood
The preparation method of material, to solve the above problems.
A kind of preparation method of cement-base composite material, includes the following steps:
The component of cement-base composite material is mixed, the component of the cement-base composite material include cementitious material,
Aggregate, water, steel fibre, water-reducing agent and defoaming agent, wherein the cementitious material includes cement and silicon powder, the silicon powder with
The mass ratio of the cement is 7%~15%, and the mass ratio of the water and the cementitious material is 0.12~0.3；
The slurry being stirred is poured into mold；
It is flat that shake is carried out to the surface of slurry in the mold；
Stand the sealed maintenance predetermined time；And
It removes the mold and at room temperature, water spray or is maintained under conditions of humidity > 95%.
Further, the step of component of cement-base composite material being mixed includes by the group of cement-base composite material
It pours in separately in forced mixer and is quickly stirred, mixing time is not less than 1 minute.
Further, nut, bolt or pipeline are placed in the mold.
Further, the surface of slurry in the mold is carried out shaking flat step including being placed in the mold for pouring into slurry
On shake table, high-frequency vibration is carried out, the vibration time is not less than 1 minute, keeps the slurry surface in mold flat by shake.
Further, the mass fraction of the cement is 810~910kg/m3, the mass fraction of the silicon powder is 90~
140kg/m3, the mass ratio of the silicon powder and the cement is 10%~12%.
Further, the water and the mass ratio of the cementitious material are less than 0.17.
Further, the aggregate includes fine aggregate and coarse aggregate, and the fine aggregate is quartz sand, and the coarse aggregate is chicken
Meter Shi, the mass fraction of the quartz sand are 550~600kg/m3, the mass fraction of the chicken rice stone is 1000kg/m3。
Further, the mass fraction of the steel fibre is 20~150kg/m3, volume volume is less than 1.8%, the steel
The partial size of fiber is less than 0.5mm, and length is less than 15mm.
Further, the mass fraction of the water-reducing agent is 22.5kg/m3, volume volume is less than 2%.
Further, the mass fraction of the defoaming agent is 1kg/m3。
The cubic compressive strength of the cement-base composite material component of the preparation method manufacture of above-mentioned cement-base composite material
Height is greater than marmorean compression strength, and curing condition is mild, and environmental pollution is small, is not required to carry out additional processing, installation is facilitated to make
With and it is at low cost.
Specific embodiment
The technical scheme in the embodiments of the invention will be clearly and completely described below, it is clear that described implementation
Example is only a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, the common skill in this field
Art personnel all other embodiment obtained without making creative work belongs to the model that the present invention protects
It encloses.
It should be noted that it can be directly to separately when an element is considered as " connection " another element
One element may be simultaneously present the element being centrally located.When an element is considered as " setting exists " another element,
It, which can be, is set up directly on another element or may be simultaneously present the element being centrally located.
Unless otherwise defined, all technical and scientific terms used herein and belong to technical field of the invention
The normally understood meaning of technical staff is identical.Term as used herein in the specification of the present invention is intended merely to description tool
The purpose of the embodiment of body, it is not intended that in the limitation present invention.Term " and or " used herein includes one or more phases
Any and all combinations of the listed item of pass.
The present invention provides a kind of cement-base composite material, and intensity is greater than marmorean intensity.The cement-base composite material
It include: cementitious material, aggregate, water, steel fibre, water-reducing agent and defoaming agent.Wherein, the cementitious material includes cement and activity powder
Body, the aggregate include fine aggregate and coarse aggregate.
The cement selection intensity is higher than 42.5 grades of ordinary portland cement, it is preferred that the cement be 52.5 grades or
62.5 class g cements.The partial size of the cement is in 3~30um.In the present embodiment, the cement is 52.5 class g cement of P.II type.
The mass fraction of the cement is 810~910kg/m3。
The active powder is silicon powder, and the partial size of the silicon powder is in 0.1~0.3um.
The mass fraction of the silicon powder is 90~140kg/m3。
In the cementitious material, the mass ratio of silicon powder and cement is 7%~15%, it is preferred that silicon powder and cement
Mass ratio 10%~12%, wherein mass ratio effect at 10% is best.
Water and the water-cement ratio (mass ratio) of the cementitious material are 0.12~0.3, it is preferred that water and the cementitious material
Mass ratio is less than 0.17.
The fine aggregate is quartz sand (or river sand), and the maximum particle diameter of the quartz sand is less than 1mm, and average grain diameter is less than
0.5mm, it is preferred that the partial size of the quartz sand is in 0.1mm~0.5mm, dioxide-containing silica >=97%.
The mass fraction of the quartz sand is 550~600kg/m3。
The coarse aggregate is chicken rice stone, and the maximum particle diameter of the chicken rice stone is less than 10mm, it is preferred that the grain of the chicken rice stone
Diameter is in 1mm~3mm.The chicken rice stone can be the chicken rice stone of two kinds of different-grain diameters: 1mm~3mm and 3mm~5mm.
The mass fraction of the chicken rice stone is 1000kg/m3。
The partial size of the steel fibre is less than 0.5mm, and length is less than 15mm.In other embodiments, the steel fibre also may be used
The higher plastic optical fibre of intensity or steel fibre is changed to be used in mixed way in proportion with plastic optical fibre.
The mass fraction of the steel fibre is 20~150kg/m3, volume volume is less than 1.8%.
The water-reducing agent is polycarboxylic acid series high efficiency water reducing agent, naphthalene series high-efficiency water-reducing agent etc., and water-reducing rate is not less than 30%.
The mass fraction of the water-reducing agent is 22.5kg/m3, volume volume is less than 2%.
The defoaming agent is the defoaming agent of the compositions such as polyethers synthesis.
The mass fraction of the defoaming agent is 1kg/m3。
The present invention also provides a kind of preparation methods of above-mentioned cement-base composite material, and steps are as follows:
Step 1: each component is mixed.
Specifically, cement, silicon powder, quartz sand, Ji meter Shi, steel fibre, water-reducing agent and defoaming agent are successively weighed in proportion,
And water is added, it pours into forced mixer and is quickly stirred, be uniformly mixed it, mixing time is not less than 1 minute.
Step 2: being put into mold.
Specifically, the slurry being stirred is poured into the mold of component to be formed.
Nut, bolt, accurate mounting base or prefabricated pipeline etc. can be put into a mold.The material used for big machinery
Material, can be put into the steel such as screw-thread steel as reinforcing rib in a mold.
Step 3: shake is flat.
Specifically, the mold for pouring into slurry being placed on shake table, carries out high-frequency vibration, the vibration time is not less than 1 minute,
Keep the slurry surface in mold flat by shake.
Step 4: standing.
Specifically, the mold for shaking flat is stood, the sealed maintenance predetermined time, it is preferred that time of repose is one day.
Step 5: demoulding and maintenance.
Specifically, remove mold after one day, and standard curing mode taken to be conserved: at room temperature, water spray or
It is maintained under conditions of humidity > 95%.
Below by embodiment, the present invention is described in more detail.
Embodiment 1
Step 1: each component is mixed.
It is 910kg/m by the mass fraction of cement3, the mass fraction of silicon powder is 90kg/m3, the mass fraction of quartz sand
For 550kg/m3, partial size is 1000kg/m in the mass fraction of the chicken rice stone of 1~3mm3, the mass fraction of steel fibre is 150kg/
m3, water-cement ratio 0.2, the mass fraction of water-reducing agent is 22.5kg/m3, the mass fraction of defoaming agent is 1kg/m3Ratio successively
Cement, silicon powder, quartz sand, Ji meter Shi, steel fibre, water, water-reducing agent and defoaming agent are weighed, pours into forced mixer and carries out
Quickly stirring is uniformly mixed it, and mixing time is not less than 1 minute.
Step 2: being put into mold.
The slurry being stirred is poured into the mold of component to be formed.
Step 3: shake is flat.
The mold for pouring into slurry is placed on shake table, high-frequency vibration is carried out, the vibration time is not less than 1 minute, makes mold
In slurry surface it is flat by shake.
Step 4: standing.
The mold for shaking flat is stood, sealed maintenance one day.
Step 5: demoulding and maintenance.
Mold is removed after one day, and standard curing mode is taken to be conserved: at room temperature, being sprayed water or in humidity >
It is maintained under conditions of 95%.
Embodiment 2
Step 1: each component is mixed.
It is 850kg/m by the mass fraction of cement3, the mass fraction of silicon powder is 110kg/m3, the mass fraction of quartz sand
For 600kg/m3, partial size is 1000kg/m in the mass fraction of the chicken rice stone of 1~3mm3, the mass fraction of steel fibre is 20kg/
m3, water-cement ratio 0.14, the mass fraction of water-reducing agent is 22.5kg/m3, the mass fraction of defoaming agent is 1kg/m3Ratio successively
Cement, silicon powder, quartz sand, Ji meter Shi, steel fibre, water, water-reducing agent and defoaming agent are weighed, pours into forced mixer and carries out
Quickly stirring is uniformly mixed it, and mixing time is not less than 1 minute.
Step 2: being put into mold.
The slurry being stirred is poured into the mold of component to be formed, No. 16 screw-thread steel 80kg, steel wire are put into mold
10kg does reinforcing rib.
Step 3: shake is flat.
The mold for pouring into slurry is placed on shake table, high-frequency vibration is carried out, the vibration time is not less than 1 minute, makes mold
In slurry surface it is flat by shake.
Step 4: standing.
The mold for shaking flat is stood, sealed maintenance one day.
Step 5: demoulding and maintenance.
Mold is removed after one day, and standard curing mode is taken to be conserved: at room temperature, being sprayed water or in humidity >
It is maintained under conditions of 95%.
Embodiment 3
Step 1: each component is mixed.
It is 910kg/m by the mass fraction of cement3, the mass fraction of silicon powder is 90kg/m3, the mass fraction of quartz sand
For 550kg/m3, partial size is 700kg/m in the mass fraction of the chicken rice stone of 1~3mm3, quality of the partial size in the chicken rice stone of 3~5mm
Score is 300kg/m3, the mass fraction of steel fibre is 150kg/m3, the mass fraction of water-cement ratio 0.18, water-reducing agent is
22.5kg/m3, the mass fraction of defoaming agent is 1kg/m3Ratio successively to weigh cement, silicon powder, quartz sand, Ji meter Shi, steel fine
Dimension, water, water-reducing agent and defoaming agent, pour into forced mixer and are quickly stirred, and are uniformly mixed it, mixing time is not small
In 1 minute.
Step 2: being put into mold.
The slurry being stirred is poured into the mold of component to be formed.
Step 3: shake is flat.
The mold for pouring into slurry is placed on shake table, high-frequency vibration is carried out, the vibration time is not less than 1 minute, makes mold
In slurry surface it is flat by shake.
Step 4: standing.
The mold for shaking flat is stood, sealed maintenance one day.
Step 5: demoulding and maintenance.
Mold is removed after one day, and standard curing mode is taken to be conserved: at room temperature, being sprayed water or in humidity >
It is maintained under conditions of 95%.
Embodiment 4
Step 1: each component is mixed.
It is 850kg/m by the mass fraction of cement3, the mass fraction of silicon powder is 110kg/m3, the mass fraction of quartz sand
For 600kg/m3, partial size is 300kg/m in the mass fraction of the chicken rice stone of 1~3mm3, quality of the partial size in the chicken rice stone of 3~5mm
Score is 700kg/m3, the mass fraction of steel fibre is 20kg/m3, the mass fraction of water-cement ratio 0.18, water-reducing agent is
22.5kg/m3, the mass fraction of defoaming agent is 1kg/m3Ratio successively to weigh cement, silicon powder, quartz sand, Ji meter Shi, steel fine
Dimension, water, water-reducing agent and defoaming agent, pour into forced mixer and are quickly stirred, and are uniformly mixed it, mixing time is not small
In 1 minute.
Step 2: being put into mold.
The slurry being stirred is poured into the mold of component to be formed, No. 16 screw-thread steel 80kg, steel wire are put into mold
10kg does reinforcing rib.
Step 3: shake is flat.
The mold for pouring into slurry is placed on shake table, high-frequency vibration is carried out, the vibration time is not less than 1 minute, makes mold
In slurry surface it is flat by shake.
Step 4: standing.
The mold for shaking flat is stood, sealed maintenance one day.
Step 5: demoulding and maintenance.
Mold is removed after one day, and standard curing mode is taken to be conserved: at room temperature, being sprayed water or in humidity >
It is maintained under conditions of 95%.
Compression strength is carried out using cement-base composite material obtained by Examples 1 to 4 and flexural strength compares.Test knot
Fruit is referring to following table:
| Compression strength/MPa | Flexural strength/MPa | |
| Embodiment 1 | 145 | 40 |
| Embodiment 2 | 195 | 200 |
| Embodiment 3 | 143 | 32 |
| Embodiment 4 | 180 | 200 |
Cement-base composite material produced by the present invention can be used after 1 week, conserve week compared to conventional concrete component
Phase is short (2 weeks or more), and curing condition is mild, and at low cost, environmental pollution is small, and its cubic compressive strength is in 140MPa
More than, be greater than marmorean compression strength (100MPa~120MPa), and be added after screw-thread steel etc. reinforced, compression strength and
Flexural strength significantly improves.
The present invention also provides a kind of mounting plates of equipment that the preparation method by above-mentioned cement-base composite material manufactures, bottom
The cement-base composite material supporting member of cabinet, column etc., with intensity height, precision is high, and environmental pollution is small, at low cost, and
It can according to need and made multiple cement-base composite material supporting members of different proportions, such as use embodiment 3
And the cement-base composite material supporting member of the proportion production in embodiment 4, so that due to supporting structure in equipment use process
The component ratio of part chicken rice stone is different, and mechanical vibration wave conductivity is different, and resonant frequency is different, so that it is effectively prevented resonance,
Achieve the effect that absorb vibration, to improve the precision of equipment operation.
Cement-base composite material supporting member surface accuracy produced by the present invention is high, can according to actual needs, in shaping mould
Bolt, nut are added in tool, accurate mounting base or prefabricated pipeline etc. are not required to carry out additional processing, facilitate installation and use.
In addition, those skilled in the art can also do other variations in spirit of that invention, certainly, these are smart according to the present invention
The variation that mind is done, should all be included in scope of the present invention.
Claims (10)
1. a kind of preparation method of cement-base composite material, characterized by the following steps:
The component of cement-base composite material is mixed, the component of the cement-base composite material include cementitious material, aggregate,
Water, steel fibre, water-reducing agent and defoaming agent, wherein the cementitious material includes cement and silicon powder, the silicon powder and the water
The mass ratio of mud is 7%~15%, and the mass ratio of the water and the cementitious material is 0.12~0.3；
The slurry being stirred is poured into mold；
It is flat that shake is carried out to the surface of slurry in the mold；
Stand the sealed maintenance predetermined time；And
It removes the mold and at room temperature, water spray or is maintained under conditions of humidity > 95%.
2. the preparation method of cement-base composite material as described in claim 1, it is characterised in that: by cement-base composite material
The step of component is mixed includes pouring into the component of cement-base composite material in forced mixer quickly to be stirred, and is stirred
The time is mixed not less than 1 minute.
3. the preparation method of cement-base composite material as described in claim 1, it is characterised in that: be placed with spiral shell in the mold
Female, bolt or pipeline.
4. the preparation method of cement-base composite material as described in claim 1, it is characterised in that: to slurry in the mold
Surface carries out shaking flat step including that the mold for pouring into slurry is placed on shake table, carries out high-frequency vibration, and the vibration time is not small
In 1 minute, keep the slurry surface in mold flat by shake.
5. the preparation method of cement-base composite material as described in claim 1, it is characterised in that: the mass fraction of the cement
For 810~910kg/m3, the mass fraction of the silicon powder is 90~140kg/m3, the quality of the silicon powder and the cement
Than 10%~12%.
6. the preparation method of cement-base composite material as described in claim 1, it is characterised in that: the water and the gelling material
The mass ratio of material is less than 0.17.
7. the preparation method of cement-base composite material as described in claim 1, it is characterised in that: the aggregate includes fine aggregate
And coarse aggregate, the fine aggregate are quartz sand, and the coarse aggregate is chicken rice stone, the mass fraction of the quartz sand is 550~
600kg/m3, the mass fraction of the chicken rice stone is 1000kg/m3。
8. the preparation method of cement-base composite material as described in claim 1, it is characterised in that: the quality of the steel fibre point
Number is 20~150kg/m3, for volume volume less than 1.8%, the partial size of the steel fibre is less than 0.5mm, and length is less than 15mm.
9. the preparation method of cement-base composite material as described in claim 1, it is characterised in that: the quality of the water-reducing agent point
Number is 22.5kg/m3, volume volume is less than 2%.
10. the preparation method of cement-base composite material as described in claim 1, it is characterised in that: the quality of the defoaming agent
Score is 1kg/m3。
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2019
- 2019-03-27 CN CN201910239578.5A patent/CN109879647A/en active Pending
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|---|---|---|---|---|
| EP1184353A1 (en) * | 1998-12-25 | 2002-03-06 | Sika Ltd. | Cement dispersant and concrete composition containing the dispersant |
| CN105418010A (en) * | 2015-09-01 | 2016-03-23 | 深圳海龙建筑制品有限公司 | Ultra-high-performance concrete prefabricated component and preparation method thereof |
| CN105693166A (en) * | 2016-02-02 | 2016-06-22 | 北京交通大学 | Ultrahigh-performance concrete and preparation method thereof |
| CN106946520A (en) * | 2017-03-06 | 2017-07-14 | 武汉大学 | A kind of ultra-high performance concrete of the coarse aggregate containing basalt and preparation method thereof |
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