CN113213874A - Energy-saving anti-cracking concrete - Google Patents
Energy-saving anti-cracking concrete Download PDFInfo
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- CN113213874A CN113213874A CN202110577523.2A CN202110577523A CN113213874A CN 113213874 A CN113213874 A CN 113213874A CN 202110577523 A CN202110577523 A CN 202110577523A CN 113213874 A CN113213874 A CN 113213874A
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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
- C04B28/14—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing calcium sulfate cements
- C04B28/142—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing calcium sulfate cements containing synthetic or waste calcium sulfate cements
- C04B28/144—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing calcium sulfate cements containing synthetic or waste calcium sulfate cements the synthetic calcium sulfate being a flue gas desulfurization product
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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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/00991—Uses not provided for elsewhere in C04B2111/00 for testing
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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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/20—Resistance against chemical, physical or biological attack
- C04B2111/2038—Resistance against physical degradation
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- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
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- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Preparation Of Clay, And Manufacture Of Mixtures Containing Clay Or Cement (AREA)
Abstract
The invention discloses an energy-saving anti-crack concrete which is prepared from the following materials in parts by weight: the concrete block comprises the following raw materials in parts by weight: 16-25 parts of boiler waste residues, 22-34 parts of desulfurized ash, 30-38 parts of fly ash, 7-11 parts of cement, 14-21 parts of lime, 1-3 parts of gypsum, 5-8 parts of coarse and fine aggregates, 3-6 parts of fine grinding admixture and 1.2-1.6 parts of retarder.
Description
Technical Field
The invention belongs to the technical field of anti-crack concrete, and particularly relates to energy-saving anti-crack concrete.
Background
Concrete, referred to as "concrete (t you ng)": refers to the general name of engineering composite materials formed by cementing aggregate into a whole by cementing materials. The term concrete generally refers to cement as the cementing material and sand and stone as the aggregate; the cement concrete, also called as common concrete, is obtained by mixing with water (which may contain additives and admixtures) according to a certain proportion and stirring, and is widely applied to civil engineering. In recent years, accidents from premature failure to collapse due to deterioration of materials of concrete structures are not rare at home and abroad. The common phenomena include cracking and peeling of the concrete surface and corrosion and exposure of reinforcing steel bars, and the durability of the concrete and reinforced concrete structures is seriously threatened.
Most of the concrete on the market at present is in the use, because mortar ratio material composition is different, the concrete anti-cracking degree of producing is also different, current concrete does not carry out detailed anti-crack effect research to different mortar raw materials composition ratio condition, consequently can't know the influence that causes the concrete anti-cracking degree under different raw materials ratio condition, on the other hand, current concrete is in process of production, do not add industry solid waste to the concrete, according to research show, it can increase the concrete intensity to add a certain amount of industry solid waste in the concrete, but the ratio raw materials that current concrete added when production is more, the waste of resource has been caused.
Disclosure of Invention
The technical problem to be solved by the invention is to overcome the existing defects and provide an energy-saving anti-cracking concrete so as to solve the problem that the influence on the anti-cracking degree of the concrete under the condition of different raw material proportions cannot be known in the background art.
In order to achieve the purpose, the invention provides the following technical scheme: the energy-saving anti-crack concrete comprises the following components in parts by weight: 16-25 parts of boiler waste residues, 22-34 parts of desulfurized ash, 30-38 parts of fly ash, 7-11 parts of cement, 14-21 parts of lime, 1-3 parts of gypsum, 5-8 parts of coarse and fine aggregates, 3-6 parts of fine grinding admixture, 1.2-1.6 parts of retarder, 0.1-0.4 part of air-entraining water reducer, 0.06-0.1 part of expanding agent, 0.2-0.6 part of polyester fiber, 0.2-0.6 part of polypropylene coarse fiber and 0.2-0.6 part of steel fiber.
Preferably, the preparation process is as follows:
the method comprises the following steps: placing the materials in a stirrer according to corresponding mixing proportion, mixing and stirring the treated flotation steel slag tail mud, desulfurized ash, cement, lime, gypsum, coarse aggregate, fine aggregate and fine grinding admixture, adding water into a retarder, an air-entraining water reducing agent and an expanding agent, stirring, adding water into the stirrer periodically according to the mixing state of mortar during stirring, and finally mixing the mixed solution with polyester fiber, polypropylene coarse fiber and steel fiber;
step two: after stirring, cleaning the test mold, uniformly brushing the inner surface with a coating agent, or injecting the uniformly stirred slurry into a test piece sprayed with a release agent by using a waste engine oil bag body;
step three: filling the concrete mixture into a test mold at one time, preliminarily tamping the concrete mixture by using a vibrating rod, placing the test mold on a vibrating table, applying pressure on the surface of the concrete by using a trowel, placing the test mold in a curing box for curing, and waiting for natural forming of the concrete;
step four: after concrete is formed, taking out the concrete blocks from the test mold, placing a plurality of groups of concrete blocks on anti-cracking detection equipment, and detecting the anti-cracking degree of the concrete;
step five: and observing the surface crack areas of the multiple groups of concrete blocks, recording the results, and screening out the concrete with the best anti-cracking effect by comparing the crack areas of different concrete blocks.
Preferably, in the first step, in the process of preparing the concrete mortar, three different conditions of the boiler waste residue and the desulfurized ash are set, wherein one of the three conditions is that only the boiler waste residue is added, the other one is that only the desulfurized ash is added, the other one is that the mixed material of the boiler waste residue and the desulfurized ash is added, and the adding weights of the three raw materials are the same.
Preferably, in the first step, in the mixing and stirring process, the polyester fibers, the polypropylene coarse fibers and the steel fibers are respectively added into three different mixers for stirring, and the adding weights of the polyester fibers, the polypropylene coarse fibers and the steel fibers are also set to be the same.
Preferably, in the third step, when the vibrating time is about to end, an iron trowel is used for scraping off the excessive concrete on the surface, and the surface is smoothed, and the vibrating time of different groups is ensured to be the same.
Preferably, in the fourth step, after the concrete is formed, the test film is taken out of the protective box, the concrete blocks are taken out of the test piece, different groups of concrete blocks are placed on the concrete crack detection equipment, and crack resistance detection is performed on different concrete blocks.
Preferably, in the fourth step, after the concrete crack detection device finishes detecting, the crack area of the surface of each group of concrete blocks is observed, and the crack area is recorded.
Preferably, in the fifth step, screening is performed according to crack areas of different concrete blocks, the concrete block with the smallest crack area is selected, and the proportioning components of the concrete raw materials are recorded.
Compared with the prior art, the invention provides energy-saving anti-crack concrete, which has the following beneficial effects:
1. according to the invention, different industrial fixed wastes are added into concrete, different anti-cracking fibers are added into the concrete in the corresponding different industrial fixed wastes, the anti-cracking pressure test experiment is carried out on the formed concrete block under the condition of the raw material proportion, and the concrete with the best anti-cracking effect under the corresponding raw material proportion can be screened out by observing the surface crack area of the concrete block and the surface crack area of different concrete blocks, so that the concrete can be suitable for construction site operation requiring higher anti-cracking strength;
2. according to the invention, the industrial fixed waste is used as the concrete proportioning raw material, so that the self anti-cracking strength of the concrete can be increased, the use of the raw material in the preparation process of the concrete can be reduced, the waste resource utilization is realized, and the energy-saving effect of the concrete is achieved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention without limiting the invention in which:
FIG. 1 is a frame diagram of a process system for energy-saving anti-crack concrete according to the present invention;
FIG. 2 is a system framework diagram for preparing mortar raw materials in the energy-saving anti-crack concrete provided by the invention;
FIG. 3 is a system frame diagram for preparing the energy-saving anti-crack concrete gel provided by the invention;
FIG. 4 is a system framework diagram of the preparation of external additives in the energy-saving anti-crack concrete provided by the invention;
FIG. 5 is a system framework diagram of the preparation of the crack resistant fiber in the energy-saving crack resistant concrete according to the present invention;
FIG. 6 is a system frame diagram of the cracking strength screening in the energy-saving cracking-resistant concrete according to 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. 1-6, the present invention provides the following technical solutions: an energy-saving anti-crack concrete is prepared from the following concrete materials in parts by weight: 16-25 parts of boiler waste residues, 22-34 parts of desulfurized ash, 30-38 parts of fly ash, 7-11 parts of cement, 14-21 parts of lime, 1-3 parts of gypsum, 5-8 parts of coarse and fine aggregates, 3-6 parts of fine grinding admixture, 1.2-1.6 parts of retarder, 0.1-0.4 part of air-entraining water reducer, 0.06-0.1 part of expanding agent, 0.2-0.6 part of polyester fiber, 0.2-0.6 part of polypropylene coarse fiber and 0.2-0.6 part of steel fiber.
In the invention, the preparation process is preferably as follows:
the method comprises the following steps: placing the materials in a stirrer according to corresponding mixing proportion, mixing and stirring the treated flotation steel slag tail mud, desulfurized ash, cement, lime, gypsum, coarse aggregate, fine aggregate and fine grinding admixture, adding water into a retarder, an air-entraining water reducing agent and an expanding agent, stirring, adding water into the stirrer periodically according to the mixing state of mortar during stirring, and finally mixing the mixed solution with polyester fiber, polypropylene coarse fiber and steel fiber;
step two: after stirring, cleaning the test mold, uniformly brushing the inner surface with a coating agent, or injecting the uniformly stirred slurry into a test piece sprayed with a release agent by using a waste engine oil bag body;
step three: filling the concrete mixture into a test mold at one time, preliminarily tamping the concrete mixture by using a vibrating rod, placing the test mold on a vibrating table, applying pressure on the surface of the concrete by using a trowel, placing the test mold in a curing box for curing, and waiting for natural forming of the concrete;
step four: after concrete is formed, taking out the concrete blocks from the test mold, placing a plurality of groups of concrete blocks on anti-cracking detection equipment, and detecting the anti-cracking degree of the concrete;
step five: and observing the surface crack areas of the multiple groups of concrete blocks, recording the results, and screening out the concrete with the best anti-cracking effect by comparing the crack areas of different concrete blocks.
In the invention, preferably, in the step one, in the process of preparing the concrete mortar, three different conditions of the boiler waste residue and the desulfurized ash are set, wherein one of the three conditions is that only the boiler waste residue is added, the other one is that only the desulfurized ash is added, the other one is that the mixed material of the boiler waste residue and the desulfurized ash is added, and the adding weights of the three raw materials are the same.
In the present invention, preferably, in the first step, during the mixing and stirring process, the polyester fiber, the polypropylene coarse fiber, and the steel fiber are added into three different mixers respectively for stirring, and the adding weights of the polyester fiber, the polypropylene coarse fiber, and the steel fiber are also set to be the same weight.
In the invention, preferably, in the third step, when the vibrating time is about to end, the excessive concrete on the surface is scraped by using an iron trowel, the surface is smoothed, and the vibrating time of different groups is ensured to be the same.
Preferably, in the fourth step, after the concrete is formed, the test film is taken out of the protective box, the concrete blocks are taken out of the test piece, different groups of concrete blocks are placed on the concrete crack detection equipment, and crack resistance detection is performed on different concrete blocks.
Preferably, in the fourth step, after the concrete crack detection device finishes detecting, the crack area on the surface of each group of concrete blocks is observed, and the crack area is recorded.
In the invention, preferably, in the fifth step, screening is performed according to crack areas of different concrete blocks, the concrete block with the smallest crack area is selected, and the proportioning components of the concrete raw materials are recorded.
The first embodiment is as follows:
an energy-saving anti-crack concrete is prepared from the following concrete materials in parts by weight: 16-25 parts of boiler waste residues, 22-34 parts of desulfurized ash, 30-38 parts of fly ash, 7-11 parts of cement, 14-21 parts of lime, 1-3 parts of gypsum, 5-8 parts of coarse and fine aggregates, 3-6 parts of fine grinding admixture, 1.2-1.6 parts of retarder, 0.1-0.4 part of air-entraining water reducer, 0.06-0.1 part of expanding agent, 0.2-0.6 part of polyester fiber, 0.2-0.6 part of polypropylene coarse fiber and 0.2-0.6 part of steel fiber.
In the invention, the preparation process is preferably as follows:
the method comprises the following steps: placing the materials in a stirrer according to corresponding mixing proportion, mixing and stirring the treated flotation steel slag tail mud, desulfurized ash, cement, lime, gypsum, coarse aggregate, fine aggregate and fine grinding admixture, adding water into a retarder, an air-entraining water reducing agent and an expanding agent, stirring, adding water into the stirrer periodically according to the mixing state of mortar during stirring, and finally mixing the mixed solution with polyester fiber, polypropylene coarse fiber and steel fiber;
step two: after stirring, cleaning the test mold, uniformly brushing the inner surface with a coating agent, or injecting the uniformly stirred slurry into a test piece sprayed with a release agent by using a waste engine oil bag body;
step three: filling the concrete mixture into a test mold at one time, preliminarily tamping the concrete mixture by using a vibrating rod, placing the test mold on a vibrating table, applying pressure on the surface of the concrete by using a trowel, placing the test mold in a curing box for curing, and waiting for natural forming of the concrete;
step four: after concrete is formed, taking out the concrete blocks from the test mold, placing a plurality of groups of concrete blocks on anti-cracking detection equipment, and detecting the anti-cracking degree of the concrete;
step five: and observing the surface crack areas of the multiple groups of concrete blocks, recording the results, and screening out the concrete with the best anti-cracking effect by comparing the crack areas of different concrete blocks.
In the invention, preferably, in the step one, in the process of preparing the concrete mortar, three different conditions of the boiler waste residue and the desulfurized ash are set, wherein one of the three conditions is that only the boiler waste residue is added, the other one is that only the desulfurized ash is added, the other one is that the mixed material of the boiler waste residue and the desulfurized ash is added, and the adding weights of the three raw materials are the same.
In the present invention, preferably, in the first step, during the mixing and stirring process, the polyester fiber, the polypropylene coarse fiber, and the steel fiber are added into three different mixers respectively for stirring, and the adding weights of the polyester fiber, the polypropylene coarse fiber, and the steel fiber are also set to be the same weight.
In the invention, preferably, in the third step, when the vibrating time is about to end, the excessive concrete on the surface is scraped by using an iron trowel, the surface is smoothed, and the vibrating time of different groups is ensured to be the same.
Preferably, in the fourth step, after the concrete is formed, the test film is taken out of the protective box, the concrete blocks are taken out of the test piece, different groups of concrete blocks are placed on the concrete crack detection equipment, and crack resistance detection is performed on different concrete blocks.
Preferably, in the fourth step, after the concrete crack detection device finishes detecting, the crack area on the surface of each group of concrete blocks is observed, and the crack area is recorded.
In the invention, preferably, in the fifth step, screening is performed according to crack areas of different concrete blocks, the concrete block with the smallest crack area is selected, and the proportioning components of the concrete raw materials are recorded.
Example two:
an energy-saving anti-crack concrete is prepared from the following concrete materials in parts by weight: 16-25 parts of boiler waste residues, 22-34 parts of desulfurized ash, 30-38 parts of fly ash, 7-11 parts of cement, 14-21 parts of lime, 1-3 parts of gypsum, 5-8 parts of coarse and fine aggregates, 3-6 parts of fine grinding admixture, 1.2-1.6 parts of retarder, 0.1-0.4 part of air-entraining water reducer, 0.06-0.1 part of expanding agent, 0.2-0.6 part of polyester fiber, 0.2-0.6 part of polypropylene coarse fiber and 0.2-0.6 part of steel fiber.
In the invention, the preparation process is preferably as follows:
the method comprises the following steps: placing the materials in a stirrer according to corresponding mixing proportion, mixing and stirring the treated flotation steel slag tail mud, desulfurized ash, cement, lime, gypsum, coarse aggregate, fine aggregate and fine grinding admixture, adding water into a retarder, an air-entraining water reducing agent and an expanding agent, stirring, adding water into the stirrer periodically according to the mixing state of mortar during stirring, and finally mixing the mixed solution with polyester fiber, polypropylene coarse fiber and steel fiber;
step two: after stirring, cleaning the test mold, uniformly brushing the inner surface with a coating agent, or injecting the uniformly stirred slurry into a test piece sprayed with a release agent by using a waste engine oil bag body;
step three: filling the concrete mixture into a test mold at one time, preliminarily tamping the concrete mixture by using a vibrating rod, placing the test mold on a vibrating table, applying pressure on the surface of the concrete by using a trowel, placing the test mold in a curing box for curing, and waiting for natural forming of the concrete;
step four: after concrete is formed, taking out the concrete blocks from the test mold, placing a plurality of groups of concrete blocks on anti-cracking detection equipment, and detecting the anti-cracking degree of the concrete;
step five: and observing the surface crack areas of the multiple groups of concrete blocks, recording the results, and screening out the concrete with the best anti-cracking effect by comparing the crack areas of different concrete blocks.
In the invention, preferably, in the step one, in the process of preparing the concrete mortar, three different conditions of the boiler waste residue and the desulfurized ash are set, wherein one of the three conditions is that only the boiler waste residue is added, the other one is that only the desulfurized ash is added, the other one is that the mixed material of the boiler waste residue and the desulfurized ash is added, and the adding weights of the three raw materials are the same.
In the present invention, preferably, in the first step, during the mixing and stirring process, the polyester fiber, the polypropylene coarse fiber, and the steel fiber are added into three different mixers respectively for stirring, and the adding weights of the polyester fiber, the polypropylene coarse fiber, and the steel fiber are also set to be the same weight.
In the invention, preferably, in the third step, when the vibrating time is about to end, the excessive concrete on the surface is scraped by using an iron trowel, the surface is smoothed, and the vibrating time of different groups is ensured to be the same.
Preferably, in the fourth step, after the concrete is formed, the test film is taken out of the protective box, the concrete blocks are taken out of the test piece, different groups of concrete blocks are placed on the concrete crack detection equipment, and crack resistance detection is performed on different concrete blocks.
Preferably, in the fourth step, after the concrete crack detection device finishes detecting, the crack area on the surface of each group of concrete blocks is observed, and the crack area is recorded.
In the invention, preferably, in the fifth step, screening is performed according to crack areas of different concrete blocks, the concrete block with the smallest crack area is selected, and the proportioning components of the concrete raw materials are recorded.
Example three:
an energy-saving anti-crack concrete is prepared from the following concrete materials in parts by weight: 16-25 parts of boiler waste residues, 22-34 parts of desulfurized ash, 30-38 parts of fly ash, 7-11 parts of cement, 14-21 parts of lime, 1-3 parts of gypsum, 5-8 parts of coarse and fine aggregates, 3-6 parts of fine grinding admixture, 1.2-1.6 parts of retarder, 0.1-0.4 part of air-entraining water reducer, 0.06-0.1 part of expanding agent, 0.2-0.6 part of polyester fiber, 0.2-0.6 part of polypropylene coarse fiber and 0.2-0.6 part of steel fiber.
In the invention, the preparation process is preferably as follows:
the method comprises the following steps: placing the materials in a stirrer according to corresponding mixing proportion, mixing and stirring the treated flotation steel slag tail mud, desulfurized ash, cement, lime, gypsum, coarse aggregate, fine aggregate and fine grinding admixture, adding water into a retarder, an air-entraining water reducing agent and an expanding agent, stirring, adding water into the stirrer periodically according to the mixing state of mortar during stirring, and finally mixing the mixed solution with polyester fiber, polypropylene coarse fiber and steel fiber;
step two: after stirring, cleaning the test mold, uniformly brushing the inner surface with a coating agent, or injecting the uniformly stirred slurry into a test piece sprayed with a release agent by using a waste engine oil bag body;
step three: filling the concrete mixture into a test mold at one time, preliminarily tamping the concrete mixture by using a vibrating rod, placing the test mold on a vibrating table, applying pressure on the surface of the concrete by using a trowel, placing the test mold in a curing box for curing, and waiting for natural forming of the concrete;
step four: after concrete is formed, taking out the concrete blocks from the test mold, placing a plurality of groups of concrete blocks on anti-cracking detection equipment, and detecting the anti-cracking degree of the concrete;
step five: and observing the surface crack areas of the multiple groups of concrete blocks, recording the results, and screening out the concrete with the best anti-cracking effect by comparing the crack areas of different concrete blocks.
In the invention, preferably, in the step one, in the process of preparing the concrete mortar, three different conditions of the boiler waste residue and the desulfurized ash are set, wherein one of the three conditions is that only the boiler waste residue is added, the other one is that only the desulfurized ash is added, the other one is that the mixed material of the boiler waste residue and the desulfurized ash is added, and the adding weights of the three raw materials are the same.
In the present invention, preferably, in the first step, during the mixing and stirring process, the polyester fiber, the polypropylene coarse fiber, and the steel fiber are added into three different mixers respectively for stirring, and the adding weights of the polyester fiber, the polypropylene coarse fiber, and the steel fiber are also set to be the same weight.
In the invention, preferably, in the third step, when the vibrating time is about to end, the excessive concrete on the surface is scraped by using an iron trowel, the surface is smoothed, and the vibrating time of different groups is ensured to be the same.
Preferably, in the fourth step, after the concrete is formed, the test film is taken out of the protective box, the concrete blocks are taken out of the test piece, different groups of concrete blocks are placed on the concrete crack detection equipment, and crack resistance detection is performed on different concrete blocks.
Preferably, in the fourth step, after the concrete crack detection device finishes detecting, the crack area on the surface of each group of concrete blocks is observed, and the crack area is recorded.
In the invention, preferably, in the fifth step, screening is performed according to crack areas of different concrete blocks, the concrete block with the smallest crack area is selected, and the proportioning components of the concrete raw materials are recorded.
Examples the results of the experiments are presented in the following table:
in conclusion, the industrial solid waste is added into the concrete raw material mixture ratio to be the mixture of the boiler waste residue and the desulfurized ash, and the crack area of the formed concrete building block is the smallest under the condition that the anti-crack fiber material is added to be the steel fiber, so that the concrete prepared by the concrete raw material mixture ratio is the concrete material with the best anti-crack effect, and the concrete can be suitable for construction operation needing stronger anti-crack strength.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. An energy-saving anti-crack concrete is characterized in that: the energy-saving anti-cracking concrete material comprises the following components in parts by weight: 16-25 parts of boiler waste residues, 22-34 parts of desulfurized ash, 30-38 parts of fly ash, 7-11 parts of cement, 14-21 parts of lime, 1-3 parts of gypsum, 5-8 parts of coarse and fine aggregates, 3-6 parts of fine grinding admixture, 1.2-1.6 parts of retarder, 0.1-0.4 part of air-entraining water reducer, 0.06-0.1 part of expanding agent, 0.2-0.6 part of polyester fiber, 0.2-0.6 part of polypropylene coarse fiber and 0.2-0.6 part of steel fiber.
2. The energy-saving anti-crack concrete according to claim 1, characterized in that: the method comprises the following steps:
the method comprises the following steps: placing the materials in a stirrer according to corresponding mixing proportion, mixing and stirring the treated flotation steel slag tail mud, desulfurized ash, cement, lime, gypsum, coarse aggregate, fine aggregate and fine grinding admixture, adding water into a retarder, an air-entraining water reducing agent and an expanding agent, stirring, adding water into the stirrer periodically according to the mixing state of mortar during stirring, and finally mixing the mixed solution with polyester fiber, polypropylene coarse fiber and steel fiber;
step two: after stirring, cleaning the test mold, uniformly brushing the inner surface with a coating agent, or injecting the uniformly stirred slurry into a test piece sprayed with a release agent by using a waste engine oil bag body;
step three: filling the concrete mixture into a test mold at one time, preliminarily tamping the concrete mixture by using a vibrating rod, placing the test mold on a vibrating table, applying pressure on the surface of the concrete by using a trowel, placing the test mold in a curing box for curing, and waiting for natural forming of the concrete;
step four: after concrete is formed, taking out the concrete blocks from the test mold, placing a plurality of groups of concrete blocks on anti-cracking detection equipment, and detecting the anti-cracking degree of the concrete;
step five: and observing the surface crack areas of the multiple groups of concrete blocks, recording the results, and screening out the concrete with the best anti-cracking effect by comparing the crack areas of different concrete blocks.
3. The energy-saving anti-crack concrete according to claim 1, characterized in that: in the first step, in the process of preparing the concrete mortar, three different conditions of the boiler waste residue and the desulfurized ash are set, wherein one group is only added with the boiler waste residue, the other group is only added with the desulfurized ash, the other group is added with the mixed material of the boiler waste residue and the desulfurized ash, and the adding weights of the three raw materials are the same.
4. The energy-saving anti-crack concrete according to claim 1, characterized in that: in the first step, in the mixing and stirring process, polyester fibers, polypropylene coarse fibers and steel fibers are respectively added into three groups of different stirring machines for stirring, and the adding weights of the polyester fibers, the polypropylene coarse fibers and the steel fibers are also set to be the same.
5. The energy-saving anti-crack concrete according to claim 1, characterized in that: in the third step, when the vibration time is about to end, scraping off the redundant concrete on the surface by using an iron trowel, and troweling the surface, and ensuring that the vibration time of different groups is the same.
6. The energy-saving anti-crack concrete according to claim 1, characterized in that: and in the fourth step, after the concrete is formed, the test film is taken out of the protective box, the concrete blocks are taken out of the test piece, different groups of concrete blocks are placed on the concrete crack detection equipment, and the crack resistance of different concrete blocks is detected.
7. The energy-saving anti-crack concrete according to claim 1, characterized in that: and in the fourth step, after the concrete crack detection equipment finishes detection, observing the surface crack area of each group of concrete blocks, and recording the crack area.
8. The energy-saving anti-crack concrete according to claim 1, characterized in that: and fifthly, screening according to the crack areas of different concrete blocks, selecting the concrete block with the smallest crack area, and recording the proportioning components of the concrete raw materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110577523.2A CN113213874A (en) | 2021-05-26 | 2021-05-26 | Energy-saving anti-cracking concrete |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110577523.2A CN113213874A (en) | 2021-05-26 | 2021-05-26 | Energy-saving anti-cracking concrete |
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| 贺爱平等: "工业固体废料在混凝土中的应用", 《资源环境与工程》 * |
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Application publication date: 20210806 |