CN111892311A - Composite cementing material for ecological high-performance concrete and use method thereof - Google Patents
Composite cementing material for ecological high-performance concrete and use method thereof Download PDFInfo
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- CN111892311A CN111892311A CN202010627245.2A CN202010627245A CN111892311A CN 111892311 A CN111892311 A CN 111892311A CN 202010627245 A CN202010627245 A CN 202010627245A CN 111892311 A CN111892311 A CN 111892311A
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Classifications
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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
- C04B7/00—Hydraulic cements
- C04B7/24—Cements from oil shales, residues or waste other than slag
- C04B7/243—Mixtures thereof with activators or composition-correcting additives, e.g. mixtures of fly ash and alkali activators
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
- C04B28/04—Portland cements
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- 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
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/10—Production of cement, e.g. improving or optimising the production methods; Cement grinding
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention discloses a composite cementing material for ecological high-performance concrete and a use method thereof, wherein the composite cementing material comprises a main material A and an auxiliary material B, and the main material A is prepared from the following substances: the cement mortar comprises silico-hydrochloric acid cement, primary fly ash, nano silica fume, limestone powder and quartz powder; the auxiliary material B is prepared from the following substances: sodium hexametaphosphate, disodium ethylene diamine tetraacetate and redispersible latex powder, and the main material A and the auxiliary material B are mixed to obtain the composite gel material. The invention has the advantages of low cost and capability of effectively improving the performance of concrete, and is mainly used for improving various performances of concrete.
Description
Technical Field
The invention relates to the technical field of concrete materials, in particular to a composite cementitious material for ecological high-performance concrete and a using method thereof.
Background
At present, the construction of various buildings is not independent of the use of concrete, particularly, the more the buildings are built, the higher the requirements on various properties of the concrete after solidification are made, common concrete is a porous uneven material, the pore structure of the common concrete is an important factor influencing the strength and the folding strength of the concrete, in order to improve various properties of the concrete, the porosity can be reduced by adding ultrafine active minerals such as fly ash and nano silica fume, and the like, the pore structure is optimized, the compactness of the concrete is improved, and therefore the high-performance concrete is prepared, and most of the fly ash is industrial waste, so that waste resources can be effectively utilized.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide the composite cementing material which can reduce the cost and effectively improve the performance of concrete.
The technical scheme adopted by the invention for realizing the purpose is as follows: the composite cementing material for the ecological high-performance concrete comprises a main material A and an auxiliary material B, wherein the main material A is prepared from the following substances in parts by weight:
400 portions of silicon hydrochloric acid cement
100 portions of first-grade fly ash
300 portions of nano silica fume 100-
20-80 parts of limestone powder
20-80 parts of quartz powder;
the auxiliary material B is prepared from the following substances in parts by weight of 1:1: 1:
sodium hexametaphosphate
Ethylenediaminetetraacetic acid disodium salt
Redispersible latex powder.
The composite cementing material for the ecological high-performance concrete comprises a main material A and an auxiliary material B, wherein the main material A is prepared from the following substances in parts by weight:
500 portions of silicon hydrochloric acid cement
200 portions of first-grade fly ash
200 portions of nano silica fume
50 parts of limestone powder
50 parts of quartz powder.
The auxiliary material B is prepared from the following substances in parts by weight of 1:1: 1:
sodium hexametaphosphate
Ethylenediaminetetraacetic acid disodium salt
Redispersible latex powder.
The water demand ratio of the first-grade fly ash is not more than 90 percent, and the specific surface area is 450-500m2/kg。
SiO in the nano silica fume2The content is more than 95 percent, and the specific surface areaThe product is not less than 20000m2The particle size of the nano silica fume ranges from 0.2 mu m to 0.4 mu m.
The mass ratio of the main material A to the auxiliary material B is 100: B to 3-100: 4.
A method for using a composite cementitious material, comprising the following steps of:
step one, preparing a main material A: the preparation method comprises the steps of respectively weighing silico-hydrochloric cement, first-level fly ash, nano silica fume, limestone powder and quartz powder according to the mass ratio, sequentially adding the weighed materials into a stirrer, and stirring the materials for 3 to 6min at the rotating speed of 10 to 20rpm to obtain a main material A;
step two, preparing an auxiliary material B: the preparation method comprises the steps of respectively weighing sodium hexametaphosphate, disodium ethylene diamine tetraacetate and redispersible latex powder according to the mass ratio, sequentially adding the weighed materials into a stirrer, and stirring the materials at the rotating speed of 10-20rpm for 2-5min to obtain an auxiliary material B;
weighing the obtained main material A and the auxiliary material B according to the mass ratio, then respectively adding the weighed main material A and the weighed auxiliary material B into a stirring cylinder, and stirring for 8-10min at the rotating speed of 20-30rpm to obtain a composite gel material;
and step four, adding the aggregate, the water reducing agent, the water and the steel fiber into the obtained composite gel material, wherein the composite gel material, the aggregate, the water reducing agent, the water and the steel fiber are prepared from the following components in parts by weight:
433 parts of composite gel material
434 parts of aggregate
3 parts of water reducing agent
100 portions of water
30 portions of steel fiber
And then putting the substances into a mortar stirrer, and stirring for 10-20min at the rotating speed of 50-80rpm to obtain the high-performance concrete.
The length of the steel fiber is 4-15mm, and the equivalent diameter is 0.1-0.6 mm.
The water reducing agent is a naphthalene or polycarboxylate high-efficiency water reducing agent.
The aggregate comprises the following substances in percentage by mass: taking 400-450 parts of 20-40 mesh sand, 130-250 parts of 40-70 mesh sand and 60-100 parts of 325 mesh sand as reference aggregates, and adding 500 parts of waste aggregates.
In the aggregate, the 20-40 mesh sand, the 40-70 mesh sand and the 325 mesh sand are river sand or quartz sand, the particle size of the waste aggregate is more than or equal to 10 meshes, the deviation of each level of the waste aggregate and the reference aggregate is less than or equal to 20%, and the waste aggregate is one or a combination of more of concrete recycled aggregate, waste ceramic tile, cement concrete factory waste residue and shell residue.
The invention has the beneficial effects that: the composite gel material uses the first-grade fly ash and other materials to replace half of cement, thereby reducing the consumption of cement, reducing the cost and protecting the environment;
the main material A has a main cementing effect, and the auxiliary material B is a main active component of a cccw waterproof crystalline material, so that the anti-seepage effect is improved, the auxiliary cementing effect is realized, and the overall strength and durability are improved;
the first-grade fly ash and the nano-silica fume in the main material A have very obvious volcanic ash effect, the hydration heat generated in concrete construction is greatly reduced, the adverse effect caused by shrinkage is reduced, the nano-silica fume plays a role in gap filling, the overall stability is improved, the first-grade fly ash is industrial waste, the waste can be efficiently utilized, and the resource utilization rate is improved.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to 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.
Example one
The composite cementing material for the ecological high-performance concrete comprises a main material A and an auxiliary material B, wherein the main material A is prepared from the following substances in parts by weight:
450 portions of silicon hydrochloric acid cement
230 portions of first-grade fly ash
230 portions of nano silica fume
Limestone powder 45 parts
45 parts of quartz powder.
The auxiliary material B is prepared from the following substances in parts by weight of 1:1: 1:
sodium hexametaphosphate
Ethylenediaminetetraacetic acid disodium salt
Redispersible latex powder.
The water demand ratio of the first-grade fly ash is not more than 90 percent, and the specific surface area is 450-500m2/kg。
SiO in nano silica fume2The content is more than 95 percent, and the specific surface area is not less than 20000m2The particle size of the nano silica fume is 0.2-0.4 mu m/kg.
The mass ratio of the main material A to the auxiliary material B is 100: 3.5.
Example two
The composite cementing material for the ecological high-performance concrete comprises a main material A and an auxiliary material B, wherein the main material A is prepared from the following substances in parts by weight:
500 portions of silicon hydrochloric acid cement
200 portions of first-grade fly ash
200 portions of nano silica fume
50 parts of limestone powder
50 parts of quartz powder.
The auxiliary material B is prepared from the following substances in parts by weight of 1:1: 1:
sodium hexametaphosphate
Ethylenediaminetetraacetic acid disodium salt
Redispersible latex powder.
EXAMPLE III
The composite cementing material for the ecological high-performance concrete comprises a main material A and an auxiliary material B, wherein the main material A is prepared from the following substances in parts by weight:
portland cement 400 parts
250 portions of first-grade fly ash
250 portions of nano silica fume
50 parts of limestone powder
50 parts of quartz powder.
The auxiliary material B is prepared from the following substances in parts by weight of 1:1: 1:
sodium hexametaphosphate
Ethylenediaminetetraacetic acid disodium salt
Redispersible latex powder.
In the invention, with reference to examples 1 to 3, the major ingredient a is shown in table 1, and the minor ingredient B is shown in table 2;
TABLE 1
TABLE 2
Example four
A method for using a composite cementitious material, comprising the following steps of:
step one, preparing a main material A: the preparation method comprises the steps of weighing the silico-hydrochloric cement, the first-level fly ash, the nano silica fume, the limestone powder and the quartz powder according to the mass ratio, sequentially adding the weighed materials into a stirrer, and stirring for 6min at the rotating speed of 10rpm to obtain the main material A;
step two, preparing an auxiliary material B: the preparation method comprises the steps of weighing sodium hexametaphosphate, disodium ethylene diamine tetraacetate and redispersible latex powder according to the mass ratio, sequentially adding the weighed materials into a stirrer, and stirring the materials at the rotating speed of 15rpm for 4min to obtain an auxiliary material B;
weighing the obtained main material A and the auxiliary material B according to the mass ratio, then respectively adding the weighed main material A and the weighed auxiliary material B into a stirring cylinder, and stirring for 8min at the rotating speed of 30rpm to obtain the composite gel material;
and step four, adding the aggregate, the water reducing agent, the water and the steel fiber into the obtained composite gel material, wherein the composite gel material, the aggregate, the water reducing agent, the water and the steel fiber are prepared from the following components in parts by weight:
433 parts of composite gel material
434 parts of aggregate
3 parts of water reducing agent
100 portions of water
30 portions of steel fiber
And then putting the substances into a mortar stirrer, and stirring for 16min at the rotating speed of 60rpm to obtain the high-performance concrete.
Preparing different composite gel materials from the materials in the combination ratios of the components in the table 1, preparing the composite gel materials in different ratios by the method to obtain high-performance concrete, respectively placing the prepared concrete in the same mould for solidification and molding, and respectively carrying out performance detection on the molded concrete, wherein the detection result data are shown in the table 3;
TABLE 3
The length of the steel fiber is 4-15mm, and the equivalent diameter is 0.1-0.6 mm.
The water reducing agent is a naphthalene or polycarboxylate high-efficiency water reducing agent.
The aggregate is prepared by mixing the following substances in parts by weight: taking 400-450 parts of 20-40 mesh sand, 130-250 parts of 40-70 mesh sand and 60-100 parts of 325 mesh sand as reference aggregates, and adding 500 parts of waste aggregates.
In the aggregate, 20-40 mesh sand, 40-70 mesh sand and 325 mesh sand are river sand or quartz sand, the particle size of the waste aggregate is more than or equal to 10 mesh, the difference of each level of formulation with the reference aggregate is less than or equal to 20 percent, and the waste aggregate is one or a combination of more of concrete recycled aggregate, waste ceramic tile, cement concrete factory waste residue and shell residue.
EXAMPLE five
The invention has the beneficial effects that: the composite gel material uses the first-grade fly ash and other materials to replace half of cement, thereby reducing the consumption of cement, reducing the cost and protecting the environment;
the main material A has a main cementing effect, and the auxiliary material B is a main active component of a cccw waterproof crystalline material, so that the anti-seepage effect is improved, the auxiliary cementing effect is realized, and the overall strength and durability are improved;
the first-grade fly ash and the nano-silica fume in the main material A have very obvious volcanic ash effect, the hydration heat generated in concrete construction is greatly reduced, the adverse effect caused by shrinkage is reduced, the nano-silica fume plays a role in gap filling, the overall stability is improved, the first-grade fly ash is industrial waste, the waste can be efficiently utilized, and the resource utilization rate is improved.
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.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (10)
1. A composite cementing material for ecotype high-performance concrete is characterized in that: the main material A is prepared from the following materials in parts by weight:
400 portions of silicon hydrochloric acid cement
100 portions of first-grade fly ash
300 portions of nano silica fume 100-
20-80 parts of limestone powder
20-80 parts of quartz powder;
the auxiliary material B is prepared from the following substances in parts by weight of 1:1: 1:
sodium hexametaphosphate
Ethylenediaminetetraacetic acid disodium salt
Redispersible latex powder.
2. The composite cementitious material for ecotype high-performance concrete according to claim 1, characterized in that: the main material A is prepared from the following materials in parts by weight:
500 portions of silicon hydrochloric acid cement
200 portions of first-grade fly ash
200 portions of nano silica fume
50 parts of limestone powder
50 parts of quartz powder.
The auxiliary material B is prepared from the following substances in parts by weight of 1:1: 1:
sodium hexametaphosphate
Ethylenediaminetetraacetic acid disodium salt
Redispersible latex powder.
3. The composite cementitious material for ecotype high-performance concrete according to claim 1, characterized in that: the water demand ratio of the first-grade fly ash is not more than 90 percent, and the specific surface area is 450-500m2/kg。
4. The composite cementitious material for ecotype high-performance concrete according to claim 1, characterized in that: SiO in the nano silica fume2The content is more than 95 percent, and the specific surface area is not less than 20000m2The particle size of the nano silica fume ranges from 0.2 mu m to 0.4 mu m.
5. The composite cementitious material for ecotype high-performance concrete according to claim 1, characterized in that: the mass ratio of the main material A to the auxiliary material B is 100: B to 3-100: 4.
6. The use method of the composite cementing material is characterized by comprising the following use steps:
step one, preparing a main material A: the preparation method comprises the steps of respectively weighing silico-hydrochloric cement, first-level fly ash, nano silica fume, limestone powder and quartz powder according to the mass ratio, sequentially adding the weighed materials into a stirrer, and stirring the materials for 3 to 6min at the rotating speed of 10 to 20rpm to obtain a main material A;
step two, preparing an auxiliary material B: the preparation method comprises the steps of respectively weighing sodium hexametaphosphate, disodium ethylene diamine tetraacetate and redispersible latex powder according to the mass ratio, sequentially adding the weighed materials into a stirrer, and stirring the materials at the rotating speed of 10-20rpm for 2-5min to obtain an auxiliary material B;
weighing the obtained main material A and the auxiliary material B according to the mass ratio, then respectively adding the weighed main material A and the weighed auxiliary material B into a stirring cylinder, and stirring for 8-10min at the rotating speed of 20-30rpm to obtain a composite gel material;
and step four, adding the aggregate, the water reducing agent, the water and the steel fiber into the obtained composite gel material, wherein the composite gel material, the aggregate, the water reducing agent, the water and the steel fiber are prepared from the following components in parts by weight:
433 parts of composite gel material
434 parts of aggregate
3 parts of water reducing agent
100 portions of water
30 portions of steel fiber
And then putting the substances into a mortar stirrer, and stirring for 10-20min at the rotating speed of 50-80rpm to obtain the high-performance concrete.
7. The use of a composite cementitious material according to claim 6, characterised in that: the length of the steel fiber is 4-15mm, and the equivalent diameter is 0.1-0.6 mm.
8. The use of a composite cementitious material according to claim 6, characterised in that: the water reducing agent is a naphthalene or polycarboxylate high-efficiency water reducing agent.
9. The use of a composite cementitious material according to claim 6, characterised in that: the aggregate comprises the following substances in percentage by mass: taking 400-450 parts of 20-40 mesh sand, 130-250 parts of 40-70 mesh sand and 60-100 parts of 325 mesh sand as reference aggregates, and adding 500 parts of waste aggregates.
10. The use of a composite cementitious material according to claim 9, characterised in that: in the aggregate, the 20-40 mesh sand, the 40-70 mesh sand and the 325 mesh sand are river sand or quartz sand, the particle size of the waste aggregate is more than or equal to 10 meshes, the deviation of each level of the waste aggregate and the reference aggregate is less than or equal to 20%, and the waste aggregate is one or a combination of more of concrete recycled aggregate, waste ceramic tile, cement concrete factory waste residue and shell residue.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010627245.2A CN111892311A (en) | 2020-07-01 | 2020-07-01 | Composite cementing material for ecological high-performance concrete and use method thereof |
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| CN202010627245.2A CN111892311A (en) | 2020-07-01 | 2020-07-01 | Composite cementing material for ecological high-performance concrete and use method thereof |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101935192A (en) * | 2010-09-10 | 2011-01-05 | 廖传海 | Anti-cracking and anti-permeability lightweight aggregate insulating concrete |
| CN105272065A (en) * | 2015-11-18 | 2016-01-27 | 南阳理工学院 | Cement-based permeable crystallization type waterproof material for buildings |
| CN110526640A (en) * | 2019-08-07 | 2019-12-03 | 山东大元实业股份有限公司 | A kind of ultra-high performance concrete and preparation method thereof using solid-state castoff production |
-
2020
- 2020-07-01 CN CN202010627245.2A patent/CN111892311A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101935192A (en) * | 2010-09-10 | 2011-01-05 | 廖传海 | Anti-cracking and anti-permeability lightweight aggregate insulating concrete |
| CN105272065A (en) * | 2015-11-18 | 2016-01-27 | 南阳理工学院 | Cement-based permeable crystallization type waterproof material for buildings |
| CN110526640A (en) * | 2019-08-07 | 2019-12-03 | 山东大元实业股份有限公司 | A kind of ultra-high performance concrete and preparation method thereof using solid-state castoff production |
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Application publication date: 20201106 |
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