CN114956709A - High-wear-resistance and compression-resistance concrete for factory and mine roads and preparation method thereof - Google Patents
High-wear-resistance and compression-resistance concrete for factory and mine roads and preparation method thereof Download PDFInfo
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- CN114956709A CN114956709A CN202210060772.9A CN202210060772A CN114956709A CN 114956709 A CN114956709 A CN 114956709A CN 202210060772 A CN202210060772 A CN 202210060772A CN 114956709 A CN114956709 A CN 114956709A
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- 239000004567 concrete Substances 0.000 title claims abstract description 68
- 238000002360 preparation method Methods 0.000 title claims abstract description 16
- 239000004576 sand Substances 0.000 claims abstract description 43
- 239000010881 fly ash Substances 0.000 claims abstract description 35
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 50
- 229910052500 inorganic mineral Inorganic materials 0.000 claims description 42
- 239000011707 mineral Substances 0.000 claims description 42
- 239000000843 powder Substances 0.000 claims description 42
- 239000011398 Portland cement Substances 0.000 claims description 24
- 239000004575 stone Substances 0.000 claims description 17
- 230000006835 compression Effects 0.000 claims description 14
- 238000007906 compression Methods 0.000 claims description 14
- 239000000654 additive Substances 0.000 claims description 12
- 230000000996 additive effect Effects 0.000 claims description 12
- 239000000463 material Substances 0.000 claims description 11
- 239000002245 particle Substances 0.000 claims description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- 239000011449 brick Substances 0.000 claims description 6
- 238000003756 stirring Methods 0.000 claims description 6
- 239000002699 waste material Substances 0.000 claims description 6
- 238000005299 abrasion Methods 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 4
- 239000006004 Quartz sand Substances 0.000 claims description 2
- 239000010438 granite Substances 0.000 claims description 2
- 239000010453 quartz Substances 0.000 claims description 2
- 239000000377 silicon dioxide Substances 0.000 claims 1
- 238000005065 mining Methods 0.000 abstract description 9
- 239000004566 building material Substances 0.000 abstract description 5
- 239000002994 raw material Substances 0.000 abstract description 5
- 238000009435 building construction Methods 0.000 abstract 1
- -1 pebbles Substances 0.000 abstract 1
- 239000000126 substance Substances 0.000 abstract 1
- 235000019738 Limestone Nutrition 0.000 description 13
- 239000006028 limestone Substances 0.000 description 13
- 230000000052 comparative effect Effects 0.000 description 11
- 230000000694 effects Effects 0.000 description 8
- 239000010883 coal ash Substances 0.000 description 6
- 238000012545 processing Methods 0.000 description 6
- 238000012360 testing method Methods 0.000 description 6
- 239000003638 chemical reducing agent Substances 0.000 description 5
- 239000004570 mortar (masonry) Substances 0.000 description 5
- DGVVJWXRCWCCOD-UHFFFAOYSA-N naphthalene;hydrate Chemical compound O.C1=CC=CC2=CC=CC=C21 DGVVJWXRCWCCOD-UHFFFAOYSA-N 0.000 description 5
- 230000002195 synergetic effect Effects 0.000 description 5
- 238000012216 screening Methods 0.000 description 4
- 239000004568 cement Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 229920002748 Basalt fiber Polymers 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 238000000227 grinding Methods 0.000 description 2
- 230000036571 hydration Effects 0.000 description 2
- 238000006703 hydration reaction Methods 0.000 description 2
- 206010039203 Road traffic accident Diseases 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000005204 segregation Methods 0.000 description 1
- 239000011863 silicon-based powder Substances 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
Classifications
-
- 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
- C04B20/00—Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials
- C04B20/0076—Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials characterised by the grain distribution
-
- 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
- C04B20/00—Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials
- C04B20/0076—Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials characterised by the grain distribution
- C04B20/008—Micro- or nanosized fillers, e.g. micronised fillers with particle size smaller than that of the hydraulic binder
-
- 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
- C04B2111/00241—Physical properties of the materials not provided for elsewhere in C04B2111/00
- C04B2111/00362—Friction materials, e.g. used as brake linings, anti-skid materials
-
- 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
- C04B2111/0075—Uses not provided for elsewhere in C04B2111/00 for road construction
-
- 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
-
- 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
- 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
Abstract
The invention relates to the technical field of C04B building materials, and particularly provides high-wear-resistance and compression-resistance concrete for an industrial and mining road and a preparation method thereof. Compared with the prior art, the concrete prepared by using the recycled aggregate, river sand, pebbles, fly ash and other substances with different average diameters as raw materials has excellent wear resistance, anti-skid property and compressive strength, has wide application range in the field of building construction, and especially has potential application value in the field of industrial and mining roads.
Description
Technical Field
The invention relates to the technical field of C04B building materials, and particularly provides high-abrasion-resistant compression-resistant concrete for a factory and mine road and a preparation method thereof.
Background
The Chinese patent with patent publication number CN 113321461A discloses impact-resistant wear-resistant concrete for rapid road repair, wherein an impact-resistant grinding agent is added into a system, and the impact-resistant grinding agent and other components have synergistic effect to improve the early strength and impact resistance and wear resistance of the concrete, but the bearing capacity and skid resistance of the concrete for roads are not fully reflected, so that the actual application range of the concrete as a road construction raw material is limited.
The invention discloses an antiskid wear-resistant concrete and a preparation method thereof, wherein modified glass particles and modified basalt fibers are adopted in the invention, the prepared concrete has excellent light transmittance and excellent antiskid, wear-resistant and compressive strength, but the scheme of the invention needs to specially modify the glass particles and the basalt fibers, has high cost, is only suitable for small-scale research and is not beneficial to large-scale application and popularization.
Therefore, the concrete with simple preparation method, low cost, excellent skid resistance, bearing capacity, compressive strength and wear resistance has potential application value and wide application range when being used for preparing the factory and mine roads.
Disclosure of Invention
In order to solve the technical problems, the invention provides a high wear-resistant and compression-resistant concrete for an industrial and mining road, which comprises the following raw materials in parts by weight: 150-250 parts of Portland cement, 70-140 parts of recycled aggregate, 140-280 parts of fine sand, 60-100 parts of stone, 90-110 parts of mineral powder, 1-5 parts of an additive and 60-100 parts of water.
In a preferred embodiment of the present invention, the portland cement is selected from one or more of portland cement type PO32.5, portland cement type PO42.5, and portland cement type PO 52.5.
In a more preferred embodiment of the present invention, the portland cement is PO42.5 type portland cement.
As a preferable technical scheme of the invention, the preparation method of the recycled aggregate comprises the following steps: the building waste brick is crushed in a grinder and sieved into recycled aggregate with the average diameter of 5-10mm and recycled aggregate with the average diameter of 16-31.5 mm.
As a preferable technical scheme of the invention, the weight ratio of the recycled aggregate with the thickness of 5-10mm to the recycled aggregate with the thickness of 16-31.5mm is (2-4): (0.5-1.5).
As a more preferable technical scheme of the invention, the weight ratio of the recycled aggregate of 5-10mm to the recycled aggregate of 16-31.5mm is 3: 1.
as a preferable technical scheme of the invention, the fine sand comprises one or more of quartz sand, river sand, sea sand, mountain sand, granite sand and mine tailing sand.
As a more preferable technical solution of the present invention, the fine sand is river sand.
As a preferable technical scheme of the invention, the granularity of the river sand is 70-140 meshes.
As a more preferable technical scheme of the invention, the granularity of the river sand is 110-120 meshes.
As a preferable technical scheme of the invention, the weight ratio of the recycled aggregate to the fine sand is 1: (1-3).
As a more preferable technical scheme of the present invention, the weight ratio of the recycled aggregate to the fine sand is 1: 2.
the applicant has unexpectedly found that when secondary batches of recycled aggregate of 5-10mm and 16-31.5mm are used, the weight ratio of the recycled aggregate of 5-10mm to the recycled aggregate of 16-31.5mm is strictly controlled to be 3: 1, the mortar and the 120-mesh river sand with the granularity of 110-mesh sand in the body system directly have excellent matching effect through synergistic effect, the dosage of PO42.5 portland cement can be reduced to a certain extent, the cost is reduced, and simultaneously the mortar and the PO42.5 portland cement in the body system have good combination effect, so that the diffusion degree of the PO42.5 portland cement in the system is improved, the hydration effect of the PO42.5 portland cement in the body system is promoted, the connection effect among the recycled aggregate, the fine sand and the mineral powder in the body system is promoted, the overall stability in the system is promoted, the phenomenon that an industrial and mining road is easy to crack is effectively avoided, the workability and compactness of the concrete are improved, and the bearing capacity and the compressive strength of the concrete are promoted; in addition, the applicant has also found, surprisingly, that when the weight ratio of recycled aggregate to fine sand is 1: 2, the compressive strength of the prepared concrete can reach 25MPa, and the prepared concrete can be used for preparing concrete with the C25 label and has potential application value in the field of industrial and mining roads.
As a preferred technical scheme of the invention, the stone is pebbles and limestone; the weight ratio of pebbles to limestone is (1.4-2.6): (0.5-1).
As a more preferable technical solution of the present invention, the weight ratio of the pebbles to the limestone is 2.2: 0.8.
as a preferred technical solution of the present invention, the pebbles include one or a combination of more of ultra-fine pebbles, medium pebbles and coarse pebbles.
As a preferable technical solution of the present invention, the pebbles are fine pebbles.
As a more preferable technical scheme of the invention, the average diameter of the fine pebbles is 10-20 mm.
As a preferable technical scheme of the invention, the average diameter of the limestone is 10-15 mm.
As a preferable technical scheme of the invention, the mineral powder comprises one or a combination of more of mineral powder, fly ash, quartz powder and silicon powder.
As a preferable technical scheme of the invention, the mineral powder is mineral powder and fly ash, and the weight ratio of the mineral powder to the fly ash is (1.3-1.9): (2.2-2.6).
As a more preferable technical scheme of the invention, the weight ratio of the mineral powder to the fly ash is 1.5: 2.4.
as a preferable technical scheme of the invention, the granularity of the mineral powder is 200-600 meshes.
As a more preferable technical scheme of the invention, the granularity of the mineral powder is 400 meshes.
As a preferred technical solution of the present invention, the fly ash includes one or a combination of a first-grade fly ash, a second-grade fly ash and a third-grade fly ash.
As a more preferable technical scheme of the invention, the fly ash is first-grade fly ash and second-grade fly ash, and the weight ratio of the first-grade fly ash to the second-grade fly ash is (0.2-0.6): (0.9-1.3).
As a most preferable technical scheme, the weight ratio of the first-stage fly ash to the second-stage fly ash is 0.4: 1.1.
The applicant has also found, surprisingly, that when a 1.5: 2.4, when the granularity of the mineral powder is 400 meshes, the mineral powder and the fly ash have excellent mutual doping effect in a concrete framework formed by 5-10mm recycled aggregate, 16-31.5mm recycled aggregate, river sand and stone, improve the workability of a concrete system, and simultaneously improve the internal structure of the concrete through synergistic effect with other components in the body system, thereby improving the roughness of the surface of the concrete, effectively improving the skid resistance and the wear resistance of the concrete, wherein the prepared concrete is applied to mine roads of factories, has excellent skid resistance effect in rainy and snowy days at-5 to-30 ℃, and remarkably improving the safety of large trucks in the process of transporting mineral resources; moreover, the applicant has also found, surprisingly, that when a weight ratio of 0.4: 1.1, the first-level fly ash and the second-level fly ash are synergistic with 400-mesh mineral powder in the system, so that the hydration heat is reduced, the fluidity and the slump in the system can be improved, the dispersion uniformity of aggregates, fine sand and stones in the concrete system of the system is improved, the problems that the concrete is easy to crack due to the phenomena of segregation and seepage are effectively avoided, the bearing capacity of the concrete is improved to a certain extent, and the durability of the concrete is enhanced.
As a preferable technical scheme, the additive is a naphthalene water reducer.
The invention provides a preparation method of high-wear-resistance and compression-resistance concrete for a factory and mine road, which comprises the following steps:
(1) fully and uniformly stirring the portland cement, the recycled aggregate, the fine sand, the stone and the mineral powder to obtain a dry material;
(2) and (2) adding an additive and water into the dry material obtained in the step (1), and uniformly stirring to obtain the high wear-resistant and pressure-resistant concrete.
Compared with the prior art, the invention has the following beneficial effects:
1. the high wear-resistant compression-resistant concrete prepared by the invention is prepared by crushing and screening building waste bricks into 5-10mm and 16-31.5mm recycled aggregates, and reasonably compounding the recycled aggregates, particularly when the weight ratio of the 5-10mm recycled aggregates to the 16-31.5mm recycled aggregates is 3: 1, the aggregate and the river sand with the granularity of 110-120 meshes in the system have a synergistic effect, so that the bearing capacity and the compressive strength of concrete can be improved while the cement using amount is reduced and the cost is reduced, the problem that a factory and mine road is easy to crack is effectively solved, and when the weight ratio of the recycled aggregate to the fine sand is 1: 2, the strength of the prepared concrete is optimal and can reach 25 MPa.
2. The high wear-resistant and compression-resistant concrete prepared by the invention is prepared by adding the following components in a weight ratio of 2.2: 0.8 of fine pebbles and limestone, particularly when the average particle size of the fine pebbles is 10-20mm and the average particle size of the limestone is 10-15mm, the grading effect of aggregate in the concrete can be improved, the void ratio of the internal structure of the concrete is reduced, the water-cement ratio and the contractibility are improved, the compressive strength and the durability of the concrete are improved, and meanwhile, the phenomenon that the concrete for factory and mine roads cracks due to contraction and enlargement in the prior art is avoided.
3. The high wear-resistant compression-resistant concrete prepared by the invention is prepared by adding the following components in a weight ratio of 1.5: 2.4, particularly when the granularity of the mineral powder is 400 meshes, the mineral powder and the fly ash can be cooperated with other components in the system to improve the internal structure of the concrete system, enhance the antiskid performance and the wear resistance of the concrete, realize the technical effect that the concrete has excellent antiskid performance in rainy and snowy days at the temperature of-5 to-30 ℃, remarkably improve the safety of a large truck in the driving process, and remarkably reduce the frequency of traffic accidents of the large truck.
4. When the weight ratio of the high wear-resistant and compression-resistant concrete prepared by the invention in a system is 0.4: 1.1, the first-level fly ash and the second-level fly ash can improve the fluidity and the slump of concrete, improve the internal structure of the concrete and the dispersity of aggregate, and enhance the bearing capacity, the strength and the durability of the concrete.
5. The high-wear-resistance compression-resistant concrete prepared by the invention takes the recycled aggregate with the average diameter of 5-10mm and 16-31.5mm, the river sand with the granularity of 110-120 meshes, fine pebbles, limestone, mineral powder, primary fly ash, secondary fly ash and a naphthalene water reducer as raw materials, and has excellent wear resistance, anti-skid property and compression strength, is not easy to collapse, has good early strength, crack resistance and bearing capacity, and has potential application value in the field of preparation of industrial and mining roads.
Detailed Description
Examples
Example 1
The embodiment 1 provides high-wear-resistant and compression-resistant concrete for an industrial and mining road, which comprises the following raw materials in parts by weight: 150 parts of Portland cement, 70 parts of recycled aggregate, 140 parts of fine sand, 60 parts of stone, 90 parts of mineral powder, 1 part of additive and 60 parts of water.
The portland cement is PO42.5 type portland cement which is purchased from Henan Hao building materials resistant Co.Ltd;
the preparation method of the recycled aggregate comprises the following steps: placing the building waste bricks into a grinder for crushing, and screening into recycled aggregate with the average diameter of 5-10mm and recycled aggregate with the average diameter of 16-31.5 mm; the weight ratio of the recycled aggregate of 5-10mm to the recycled aggregate of 16-31.5mm is 3: 1;
the fine sand is river sand which is purchased from Huitong mortar science and technology Limited company in Wuxi city, and the granularity is 110-;
the stone material is prepared from the following components in percentage by weight of 2.2: 0.8 fine pebbles and limestone; the fine pebbles are purchased from honest fine-mesh stone powder factories in the sea city, and the average diameter is 10-20 mm; limestone is purchased from Shandong Zhanfei building materials Co., Ltd, is 002 in type, and has an average particle size of 10-15 mm;
the weight ratio of the mineral powder is 1.5: 2.4 of mineral powder and fly ash; the mineral powder is purchased from NanYi mineral product processing factory of Lingshou county, the model is S95, and the granularity is 400 meshes; the weight ratio of the fly ash is 0.4: 1.1, the first-grade coal ash and the second-grade coal ash are purchased from a strong mineral product processing factory in Lingshou county;
the additive is a naphthalene water reducer which is purchased from Shandongxin Jazz Biotech Co., Ltd;
the preparation method of the high-wear-resistance and compression-resistance concrete for the factory and mine roads comprises the following steps:
(1) fully and uniformly stirring the portland cement, the recycled aggregate, the fine sand, the stone and the mineral powder to obtain a dry material;
(2) and (2) adding an additive and water into the dry material obtained in the step (1), and uniformly stirring to obtain the high wear-resistant and pressure-resistant concrete.
Example 2
Embodiment 2 provides high-wear-resistant and compression-resistant concrete for a factory and mine road, which comprises the following components in parts by weight: 250 parts of Portland cement, 140 parts of recycled aggregate, 280 parts of fine sand, 100 parts of stone, 110 parts of mineral powder, 5 parts of an additive and 100 parts of water.
The portland cement is PO42.5 type portland cement which is purchased from Henan Hao building materials resistant Co.Ltd;
the preparation method of the recycled aggregate comprises the following steps: placing the building waste bricks into a grinder for crushing, and screening into recycled aggregate with the average diameter of 5-10mm and recycled aggregate with the average diameter of 16-31.5 mm; the weight ratio of the recycled aggregate of 5-10mm to the recycled aggregate of 16-31.5mm is 3: 1;
the fine sand is river sand which is purchased from Huitong mortar science and technology Limited company in Wuxi city, and the granularity is 110-;
the stone material is prepared from the following components in percentage by weight of 2.2: 0.8 fine pebbles and limestone; the fine pebbles are purchased from honest fine-mesh stone powder factories in the sea city, and the average diameter is 10-20 mm; limestone is purchased from Shandong Zhanfei building materials Co., Ltd, is 002 in type, and has an average particle size of 10-15 mm;
the weight ratio of the mineral powder is 1.5: 2.4 of mineral powder and fly ash; the mineral powder is purchased from NanYi mineral product processing factory of Lingshou county, the model is S95, and the granularity is 400 meshes; the weight ratio of the fly ash is 0.4: 1.1, wherein the first-grade coal ash and the second-grade coal ash are purchased from a strong mineral product processing factory in Lingshu county;
the additive is a naphthalene water reducer which is purchased from Shandongxin Jazz Biotech Co., Ltd;
the preparation method of the high wear-resistant and pressure-resistant concrete for the industrial and mining roads is the same as that in example 1.
Example 3
Embodiment 3 provides a high wear-resistant and compression-resistant concrete for a factory and mine road, which comprises the following components in parts by weight: 180 parts of Portland cement, 100 parts of recycled aggregate, 200 parts of fine sand, 80 parts of stone, 100 parts of mineral powder, 3 parts of an additive and 72 parts of water.
The portland cement is PO42.5 type portland cement which is purchased from Henan Hao building materials resistant Co.Ltd;
the preparation method of the recycled aggregate comprises the following steps: placing the building waste bricks into a grinder for crushing, and screening into recycled aggregate with the average diameter of 5-10mm and recycled aggregate with the average diameter of 16-31.5 mm; the weight ratio of the recycled aggregate with the thickness of 5-10mm to the recycled aggregate with the thickness of 16-31.5mm is 3: 1;
the fine sand is river sand which is purchased from Huitong mortar science and technology Limited company in Wuxi city, and the granularity is 110-;
the stone material is prepared from the following components in percentage by weight of 2.2: 0.8 fine pebbles and limestone; the fine pebbles are purchased from honest fine-mesh stone powder factories in the sea city, and the average diameter is 10-20 mm; limestone is purchased from Shandong Zhanfei building materials Co., Ltd, is 002 in type, and has an average particle size of 10-15 mm;
the weight ratio of the mineral powder is 1.5: 2.4 of mineral powder and fly ash; the mineral powder is purchased from a mineral product processing factory of nan Yi in Ling shou county, the model is S95, and the granularity is 400 meshes; the weight ratio of the fly ash is 0.4: 1.1, wherein the first-grade coal ash and the second-grade coal ash are purchased from a strong mineral product processing factory in Lingshu county;
the additive is a naphthalene water reducer which is purchased from Shandongxin Jazz Biotech Co., Ltd;
the preparation method of the high wear-resistant and pressure-resistant concrete for the industrial and mining roads is the same as that in example 1.
Comparative example 1
Comparative example 1 the specific embodiment is the same as example 3, except that the weight ratio of the recycled aggregate to the fine sand is 2: 1.
comparative example 2
Comparative example 2 the specific embodiment is the same as example 3 except that the recycled aggregate has an average diameter of 5 to 10 mm.
Comparative example 3
Comparative example 3 the specific embodiment is the same as example 3 except that the mineral powder is powdered ore.
Evaluation of Properties
(1) Unconfined compressive strength test
Forming the high-wear-resistance compressive concrete prepared in the examples 1 to 3 and the comparative examples 1 to 3 into an unconfined compressive test piece according to a method for manufacturing a cylindrical test piece in JTG E51-2009 test Specification for inorganic binder stabilizing materials in highway engineering, maintaining for 28 days at the temperature of 20 ℃ and the relative humidity of 95%, taking out, and performing an unconfined compressive strength test, wherein the measured data are shown in Table 1;
(2) abrasion resistance test
The high wear-resistant compression-resistant concrete prepared in the examples 1-3 and the comparative examples 1-3 is maintained for 28 days at the temperature of 20 ℃ and the relative humidity of 95%, and then taken out, and the wear resistance is tested according to JC/T906-2002 Cement-based wear-resistant material for concrete floors, wherein the larger the wear resistance ratio is, the better the wear resistance of the product is, and the measured data are shown in Table 1.
TABLE 1
| Unconfined compressive strength (MPa) | Abrasion resistance ratio (%) | |
| Example 1 | 24 | 354 |
| Example 2 | 22 | 352 |
| Example 3 | 25 | 356 |
| Comparative example 1 | 16 | 271 |
| Comparative example 2 | 14 | 275 |
| Comparative example 3 | 18 | 267 |
Claims (10)
1. The high-wear-resistance and compression-resistance concrete for the factory and mine roads is characterized by comprising the following components in parts by weight: 150-250 parts of Portland cement, 70-140 parts of recycled aggregate, 140-280 parts of fine sand, 60-100 parts of stone, 90-110 parts of mineral powder, 1-5 parts of an additive and 60-100 parts of water.
2. The concrete with high wear resistance and compression resistance as claimed in claim 1, wherein the preparation method of the recycled aggregate comprises the following steps: the building waste brick is crushed in a grinder and sieved into recycled aggregate with the average diameter of 5-10mm and recycled aggregate with the average diameter of 16-31.5 mm.
3. The high wear-resistant and pressure-resistant concrete according to claim 2, wherein the weight ratio of the recycled aggregate of 5-10mm to the recycled aggregate of 16-31.5mm is (2-4): (0.5-1.5).
4. The concrete of claim 1, wherein the fine sand comprises one or more of quartz sand, river sand, sea sand, mountain sand, granite sand, and mine tailing sand.
5. The concrete with high wear resistance and pressure resistance as claimed in claim 4, wherein the river sand has a particle size of 70-140 mesh.
6. The high wear-resistant and pressure-resistant concrete according to claim 1, wherein the weight ratio of the recycled aggregate to the fine sand is 1: (1-3).
7. The concrete according to claim 1, wherein the mineral powder comprises one or more of mineral powder, fly ash, quartz powder and silica powder.
8. The concrete of claim 7, wherein the particle size of the ore powder is 200-600 mesh.
9. The concrete of claim 7, wherein the fly ash comprises a combination of one or more of a primary fly ash, a secondary fly ash, and a tertiary fly ash.
10. A method for preparing the high abrasion and compression resistant concrete as claimed in any one of claims 1 to 9, comprising the steps of:
(1) fully and uniformly stirring the portland cement, the recycled aggregate, the fine sand, the stone and the mineral powder to obtain a dry material;
(2) and (2) adding an additive and water into the dry material obtained in the step (1), and uniformly stirring to obtain the high wear-resistant and pressure-resistant concrete.
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103864357A (en) * | 2013-12-31 | 2014-06-18 | 上海城建物资有限公司 | Premixed recycled concrete and preparation method thereof |
| CN112028565A (en) * | 2020-08-03 | 2020-12-04 | 广东工业大学 | Recycled coarse aggregate seawater sea sand concrete and preparation method and application thereof |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103864357A (en) * | 2013-12-31 | 2014-06-18 | 上海城建物资有限公司 | Premixed recycled concrete and preparation method thereof |
| CN112028565A (en) * | 2020-08-03 | 2020-12-04 | 广东工业大学 | Recycled coarse aggregate seawater sea sand concrete and preparation method and application thereof |
Non-Patent Citations (1)
| Title |
|---|
| 彭松枭: "再生混凝土耐磨性能研究", 《中国优秀硕士学位论文全文数据库 工程科技II辑》 * |
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Application publication date: 20220830 |