CN114591050A - High-strength cement composite material and processing method thereof - Google Patents
High-strength cement composite material and processing method thereof Download PDFInfo
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- CN114591050A CN114591050A CN202210234340.5A CN202210234340A CN114591050A CN 114591050 A CN114591050 A CN 114591050A CN 202210234340 A CN202210234340 A CN 202210234340A CN 114591050 A CN114591050 A CN 114591050A
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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
- C04B28/06—Aluminous cements
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- 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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Abstract
The invention discloses a high-strength cement composite material and a processing method thereof, wherein the formula comprises the following components: the method comprises the following steps of firstly, preparing raw materials; step two, mixing dry powder; step three, adding a water reducing agent; step four, speed regulation and stirring; in the first step, the cement is a mixture of sulphoaluminate cement and ferro-aluminate cement, No. 625 cement is adopted, the particle size of the selected broken stone is 10-15mm, in the second step, the stirring speed of the stirrer is 1.2m/s, and the stirring time is 3-4 min; according to the invention, the purpose of reducing the void ratio in the material is achieved by adding silicon powder and slag micro powder and selecting broken stone and coarse sand with smaller particle sizes; the invention increases sodium carbonate and lithium carbonate to accelerate coagulation and reduce the material forming time.
Description
Technical Field
The invention relates to the technical field of building materials, in particular to a high-strength cement composite material and a processing method thereof.
Background
The cement composite material is a composite material which is formed by taking cement as a matrix and adding various fillers, additives and water, has improved performance compared with common concrete, comprises density, impact resistance, compression strength, thermal expansion coefficient and the like, and can be widely applied to the building industry such as building inner walls, outer walls, ceilings and the like because the specific performance of the cement composite material can be optimized along with the change of the additives, but the existing cement composite material mostly adopts a waste glass filling method, so that the strength of the cement composite material is lower; the existing cement composite material has high void ratio and insufficient durability; the existing cement composite materials need a long time to solidify when being stirred.
Disclosure of Invention
The invention aims to provide a high-strength cement composite material and a processing method thereof, so as to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: a high strength cement composite material, the formulation comprising: the concrete comprises cement, broken stone, coarse sand, silicon powder, a water reducing agent, slag micro powder, steel fiber, carbon fiber, a defoaming agent, sodium carbonate and lithium carbonate, wherein the mass percentage of each component is as follows: 44-53% of cement, 10-14% of broken stone, 13-20% of coarse sand, 9-15% of silicon powder, 2-4.5% of water reducing agent, 5-12% of slag micro powder, 1-2% of steel fiber, 0.8-1.8% of carbon fiber, 0.1-0.2% of defoaming agent, 0.4-0.6% of sodium carbonate and 0.04-0.12% of lithium carbonate.
Preferably, the mass percentage of each component is as follows: 46% of cement, 12% of crushed stone, 15% of coarse sand, 10% of silicon powder, 2.6% of water reducing agent, 10% of slag micro powder, 2% of steel fiber, 1.6% of carbon fiber, 0.2% of defoaming agent, 0.5% of sodium carbonate and 0.1% of lithium carbonate.
A processing method of a high-strength cement composite material comprises the steps of firstly, preparing raw materials; step two, mixing dry powder; step three, adding a water reducing agent; step four, speed regulation and stirring;
in the first step, the components in percentage by mass are as follows: 44-53% of cement, 10-14% of broken stone, 13-20% of coarse sand, 9-15% of silicon powder, 2-4.5% of water reducing agent, 5-12% of slag micro powder, 1-2% of steel fiber, 0.8-1.8% of carbon fiber, 0.1-0.2% of defoaming agent, 0.4-0.6% of sodium carbonate and 0.04-0.12% of lithium carbonate, and the raw materials are selected according to the mass percentage sum of 1;
in the second step, the cement, the broken stone, the coarse sand, the silicon powder, the slag micro powder, the steel fiber and the carbon fiber in the first step are put into a stirrer to be slowly stirred;
in the third step, the stirrer is turned off after the dry powder is mixed to a certain degree, a certain amount of water is added into the stirrer, then the water reducing agent, the defoaming agent, the sodium carbonate and the lithium carbonate are sequentially added by using the same method, and the stirring is continued;
in the fourth step, the speed of the stirrer is adjusted from the original low speed to the high speed so as to be more uniformly mixed, and the stirring speed is adjusted to be the low speed after a period of time.
Preferably, in the first step, the cement is a mixture of sulphoaluminate cement and ferro-aluminate cement, No. 625 cement is adopted, and the selected broken stone has a particle size of 10-15 mm.
Preferably, in the first step, the coarse sand is quartz sand with a particle size of 0.1-0.3mm, and the silicon powder has a particle size of 50 μm.
Preferably, in the first step, a small amount of garnet micropowder and brown fused alumina micropowder with a particle size of 54-62 μm is mixed in the slag micropowder.
Preferably, in the first step, the diameter of the steel fiber is 0.4-0.6mm, and the diameter of the carbon fiber is 5-10 μm.
Preferably, in the second step, the stirring speed of the stirrer is 1.2m/s, and the stirring time is 3-4 min.
Preferably, in the third step, the stirring speed of the stirrer is 1.5m/s, and the stirring time is 1-2 min.
Preferably, in the fourth step, the stirring low speed of the stirrer is 1-1.5m/s, the stirring high speed is 2.5-3.5m/s, the high-speed stirring time is 4-6min, and the low-speed stirring time is 5-8 min.
Compared with the prior art, the invention has the beneficial effects that: compared with the existing cement composite material, the strength of the material is improved by adding the steel fiber and the carbon fiber; according to the invention, the purpose of reducing the void ratio in the material is achieved by adding silicon powder and slag micro powder and selecting broken stone and coarse sand with smaller particle sizes; the invention increases sodium carbonate and lithium carbonate to accelerate coagulation and reduce the material forming time.
Drawings
FIG. 1 is a flow chart of the method of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, a technical solution provided by the present invention:
example 1:
a high strength cement composite material, the formulation comprising: the concrete comprises cement, broken stone, coarse sand, silicon powder, a water reducing agent, slag micro powder, steel fiber, carbon fiber, a defoaming agent, sodium carbonate and lithium carbonate, wherein the mass percentage of each component is as follows: 46% of cement, 12% of crushed stone, 15% of coarse sand, 10% of silicon powder, 2.6% of water reducing agent, 10% of slag micro powder, 2% of steel fiber, 1.6% of carbon fiber, 0.2% of defoaming agent, 0.5% of sodium carbonate and 0.1% of lithium carbonate.
A processing method of a high-strength cement composite material comprises the steps of firstly, preparing raw materials; step two, mixing dry powder; step three, adding a water reducing agent; step four, speed regulation and stirring;
in the first step, the components in percentage by mass are as follows: 46% of cement, 12% of broken stone, 15% of coarse sand, 10% of silicon powder, 2.6% of water reducing agent, 10% of slag micro powder, 2% of steel fiber, 1.6% of carbon fiber, 0.2% of defoaming agent, 0.5% of sodium carbonate and 0.1% of lithium carbonate, and weighing according to the mass percentage sum of 1, wherein the cement is a mixture of sulphoaluminate cement and ferro-aluminate cement, 625 cement is adopted, the particle size of the selected broken stone is 10mm, the coarse sand is quartz sand with the particle size of 0.2mm, the particle size of the silicon powder is 50 μm, a small amount of garnet micro powder and brown fused alumina are doped in the slag micro powder, the particle size is 55 μm, the diameter of the steel fiber is 0.4mm, and the diameter of the carbon fiber is 8 μm;
in the second step, the cement, the broken stone, the coarse sand, the silicon powder, the slag micro powder, the steel fiber and the carbon fiber in the first step are put into a stirrer to be slowly stirred, wherein the stirring speed of the stirrer is 1.2m/s, and the stirring time is 4 min;
in the third step, the stirrer is turned off after the dry powder is mixed to a certain degree, a certain amount of water is added into the dry powder, then the water reducing agent, the defoaming agent, the sodium carbonate and the lithium carbonate are sequentially added by using the same method, and stirring is continued, wherein the stirring speed of the stirrer is 1.5m/s, and the stirring time is 2 min;
in the fourth step, the speed of the stirrer is adjusted from the original low speed to the high speed so as to be more uniformly mixed, and the stirring speed is adjusted to be the low speed stirring after a period of time, wherein the stirring low speed of the stirrer is 1.5m/s, the stirring high speed is 3m/s, the high speed stirring time is 6min, and the low speed stirring time is 8 min.
Example 2:
a high strength cement composite material, the formulation comprising: the concrete comprises cement, broken stone, coarse sand, silicon powder, a water reducing agent, slag micro powder, steel fiber, carbon fiber, a defoaming agent, sodium carbonate and lithium carbonate, wherein the mass percentage of each component is as follows: 50% of cement, 10% of broken stone, 16% of coarse sand, 12% of silicon powder, 3.0% of water reducing agent, 5% of slag micro powder, 1% of steel fiber, 1.2% of carbon fiber, 0.1% of defoaming agent, 0.6% of sodium carbonate and 0.1% of lithium carbonate.
A processing method of a high-strength cement composite material comprises the steps of firstly, preparing raw materials; step two, mixing dry powder; step three, adding a water reducing agent; step four, speed regulation and stirring;
in the first step, the components in percentage by mass are as follows: the concrete is characterized by being prepared by selecting 50% of cement, 10% of broken stone, 16% of coarse sand, 12% of silicon powder, 3.0% of water reducing agent, 5% of slag micro powder, 1% of steel fiber, 1.2% of carbon fiber, 0.1% of defoaming agent, 0.6% of sodium carbonate and 0.1% of lithium carbonate, and weighing according to the mass percentage sum of 1, wherein the cement is a mixture of sulphoaluminate cement and ferro-aluminate cement, No. 625 cement is adopted, the particle size of the selected broken stone is 10mm, the coarse sand is quartz sand with the particle size of 0.2mm, the particle size of the silicon powder is 50 μm, a small amount of garnet micro powder and brown fused alumina are doped in the slag micro powder, the particle size is 55 μm, the diameter of the steel fiber is 0.4mm, and the diameter of the carbon fiber is 8 μm;
in the second step, the cement, the broken stone, the coarse sand, the silicon powder, the slag micro powder, the steel fiber and the carbon fiber in the first step are put into a stirrer to be slowly stirred, wherein the stirring speed of the stirrer is 1.2m/s, and the stirring time is 4 min;
in the third step, the stirrer is turned off after the dry powder is mixed to a certain degree, a certain amount of water is added into the dry powder, then the water reducing agent, the defoaming agent, the sodium carbonate and the lithium carbonate are sequentially added by using the same method, and stirring is continued, wherein the stirring speed of the stirrer is 1.5m/s, and the stirring time is 2 min;
in the fourth step, the speed of the stirrer is adjusted from the original low speed to the high speed so as to be more uniformly mixed, and the stirring speed is adjusted to be the low speed stirring after a period of time, wherein the stirring low speed of the stirrer is 1.5m/s, the stirring high speed is 3m/s, the high speed stirring time is 6min, and the low speed stirring time is 8 min.
Example 3:
a high strength cement composite material, the formulation comprising: the concrete comprises cement, broken stone, coarse sand, silicon powder, a water reducing agent, slag micro powder, steel fiber, carbon fiber, a defoaming agent, sodium carbonate and lithium carbonate, wherein the mass percentage of each component is as follows: 44% of cement, 11% of broken stone, 18% of coarse sand, 12% of silicon powder, 3.4% of a water reducing agent, 8% of slag micro powder, 1% of steel fiber, 0.8% of carbon fiber, 0.2% of a defoaming agent, 0.5% of sodium carbonate and 0.1% of lithium carbonate.
A processing method of a high-strength cement composite material comprises the steps of firstly, preparing raw materials; step two, mixing dry powder; step three, adding a water reducing agent; step four, speed regulation and stirring;
in the first step, the components in percentage by mass are as follows: 44% of cement, 11% of broken stone, 18% of coarse sand, 12% of silicon powder, 3.4% of a water reducing agent, 8% of slag micro powder, 1% of steel fiber, 0.8% of carbon fiber, 0.2% of a defoaming agent, 0.5% of sodium carbonate and 0.1% of lithium carbonate, and weighing according to the mass percentage sum of 1, wherein the cement is a mixture of sulphoaluminate cement and ferro-aluminate cement, 625 cement is adopted, the particle size of the selected broken stone is 10mm, the coarse sand is quartz sand with the particle size of 0.2mm, the particle size of the silicon powder is 50 μm, a small amount of garnet micro powder and brown corundum micro powder are doped in the slag micro powder, the particle size is 55 μm, the diameter of the steel fiber is 0.4mm, and the diameter of the carbon fiber is 8 μm;
in the second step, the cement, the broken stone, the coarse sand, the silicon powder, the slag micro powder, the steel fiber and the carbon fiber in the first step are put into a stirrer to be slowly stirred, wherein the stirring speed of the stirrer is 1.2m/s, and the stirring time is 4 min;
in the third step, the stirrer is turned off after the dry powder is mixed to a certain degree, a certain amount of water is added into the dry powder, then the water reducing agent, the defoaming agent, the sodium carbonate and the lithium carbonate are sequentially added by using the same method, and stirring is continued, wherein the stirring speed of the stirrer is 1.5m/s, and the stirring time is 2 min;
in the fourth step, the speed of the stirrer is adjusted from the original low speed to the high speed so as to be more uniformly mixed, and the stirring speed is adjusted to be the low speed stirring after a period of time, wherein the stirring low speed of the stirrer is 1.5m/s, the stirring high speed is 3m/s, the high speed stirring time is 6min, and the low speed stirring time is 8 min.
The properties of the examples are compared in the following table:
based on the above, when the formula provided by the invention is used, the overall strength of the material is improved due to the addition of the two different fibers; the slag micro powder added in the invention is doped with a small amount of garnet micro powder and brown fused alumina micro powder, and silicon powder, crushed stone with small particle size and coarse sand are added, so that the void ratio in the material is reduced, and the durability is improved; the invention adds sodium carbonate and lithium carbonate as coagulant, which ensures the shortening of production cycle.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (10)
1. A high strength cement composite material, the formulation comprising: cement, rubble, coarse sand, silica flour, water-reducing agent, slay miropowder, steel fibre, carbon fiber, defoaming agent, sodium carbonate and lithium carbonate, its characterized in that: the weight percentage of each component is as follows: 44-53% of cement, 10-14% of broken stone, 13-20% of coarse sand, 9-15% of silicon powder, 2-4.5% of water reducing agent, 5-12% of slag micro powder, 1-2% of steel fiber, 0.8-1.8% of carbon fiber, 0.1-0.2% of defoaming agent, 0.4-0.6% of sodium carbonate and 0.04-0.12% of lithium carbonate.
2. A high strength cementitious composite as defined in claim 1 wherein: the weight percentage of each component is as follows: 46% of cement, 12% of crushed stone, 15% of coarse sand, 10% of silicon powder, 2.6% of water reducing agent, 10% of slag micro powder, 2% of steel fiber, 1.6% of carbon fiber, 0.2% of defoaming agent, 0.5% of sodium carbonate and 0.1% of lithium carbonate.
3. A processing method of a high-strength cement composite material comprises the steps of firstly, preparing raw materials; step two, mixing dry powder; step three, adding a water reducing agent; step four, speed regulation and stirring; the method is characterized in that:
in the first step, the components in percentage by mass are as follows: 44-53% of cement, 10-14% of broken stone, 13-20% of coarse sand, 9-15% of silicon powder, 2-4.5% of water reducing agent, 5-12% of slag micro powder, 1-2% of steel fiber, 0.8-1.8% of carbon fiber, 0.1-0.2% of defoaming agent, 0.4-0.6% of sodium carbonate and 0.04-0.12% of lithium carbonate, and the raw materials are selected according to the mass percentage sum of 1;
in the second step, the cement, the broken stone, the coarse sand, the silicon powder, the slag micro powder, the steel fiber and the carbon fiber in the first step are put into a stirrer to be slowly stirred;
in the third step, the stirrer is turned off after the dry powder is mixed to a certain degree, a certain amount of water is added into the stirrer, then the water reducing agent, the defoaming agent, the sodium carbonate and the lithium carbonate are sequentially added by using the same method, and the stirring is continued;
in the fourth step, the speed of the stirrer is adjusted from the original low speed to the high speed so as to be more uniformly mixed, and the stirring speed is adjusted to be the low speed after a period of time.
4. A method of processing a high strength cementitious composite as claimed in claim 3, wherein: in the first step, the cement is a mixture of sulphoaluminate cement and ferro-aluminate cement, No. 625 cement is adopted, and the particle size of the selected macadam is 10-15 mm.
5. A method of processing a high strength cementitious composite as claimed in claim 3, wherein: in the first step, the coarse sand is quartz sand with the grain diameter of 0.1-0.3mm, and the grain diameter of silicon powder is 50 microns.
6. The method for processing the high-strength cement composite material as claimed in claim 3, wherein: in the first step, a small amount of garnet micropowder and brown fused alumina micropowder are mixed in the slag micropowder, and the particle size of the garnet micropowder and the brown fused alumina micropowder is 54-62 microns.
7. A method of processing a high strength cementitious composite as claimed in claim 3, wherein: in the first step, the diameter of the steel fiber is 0.4-0.6mm, and the diameter of the carbon fiber is 5-10 μm.
8. A method of processing a high strength cementitious composite as claimed in claim 3, wherein: in the second step, the stirring speed of the stirrer is 1.2m/s, and the stirring time is 3-4 min.
9. The method for processing the high-strength cement composite material as claimed in claim 3, wherein: in the third step, the stirring speed of the stirrer is 1.5m/s, and the stirring time is 1-2 min.
10. A method of processing a high strength cementitious composite as claimed in claim 3, wherein: in the fourth step, the stirring low speed of the stirrer is 1-1.5m/s, the stirring high speed is 2.5-3.5m/s, the high-speed stirring time is 4-6min, and the low-speed stirring time is 5-8 min.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116789424A (en) * | 2023-07-19 | 2023-09-22 | 捷安特（昆山）有限公司 | Preparation method of carbon fiber cement composite material |
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