CN115028414A - Novel mix proportion of concrete bridge deck slab - Google Patents
Novel mix proportion of concrete bridge deck slab Download PDFInfo
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- CN115028414A CN115028414A CN202210775976.0A CN202210775976A CN115028414A CN 115028414 A CN115028414 A CN 115028414A CN 202210775976 A CN202210775976 A CN 202210775976A CN 115028414 A CN115028414 A CN 115028414A
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- 239000004567 concrete Substances 0.000 title claims abstract description 43
- 239000000203 mixture Substances 0.000 title abstract description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 36
- 239000004568 cement Substances 0.000 claims abstract description 16
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 16
- 239000000835 fiber Substances 0.000 claims abstract description 16
- 239000000463 material Substances 0.000 claims abstract description 14
- 238000002156 mixing Methods 0.000 claims abstract description 11
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 10
- 229910021487 silica fume Inorganic materials 0.000 claims abstract description 10
- 239000010959 steel Substances 0.000 claims abstract description 10
- 229910052500 inorganic mineral Inorganic materials 0.000 claims abstract description 6
- 239000011707 mineral Substances 0.000 claims abstract description 6
- 239000002994 raw material Substances 0.000 claims abstract description 6
- 239000010881 fly ash Substances 0.000 claims abstract description 4
- 229920000620 organic polymer Polymers 0.000 claims abstract description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 44
- 239000004576 sand Substances 0.000 claims description 41
- 239000002245 particle Substances 0.000 claims description 27
- 238000002360 preparation method Methods 0.000 claims description 13
- 239000011800 void material Substances 0.000 claims description 8
- UFWIBTONFRDIAS-UHFFFAOYSA-N Naphthalene Chemical compound C1=CC=CC2=CC=CC=C21 UFWIBTONFRDIAS-UHFFFAOYSA-N 0.000 claims description 6
- 239000011398 Portland cement Substances 0.000 claims description 4
- 239000006004 Quartz sand Substances 0.000 claims description 3
- 239000002253 acid Substances 0.000 claims description 3
- 239000003513 alkali Substances 0.000 claims description 3
- 239000002131 composite material Substances 0.000 claims description 3
- 238000001035 drying Methods 0.000 claims description 3
- 238000012423 maintenance Methods 0.000 claims description 3
- 238000005457 optimization Methods 0.000 abstract description 10
- 238000012360 testing method Methods 0.000 abstract description 5
- 239000011374 ultra-high-performance concrete Substances 0.000 description 18
- 238000000034 method Methods 0.000 description 14
- 238000013461 design Methods 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 6
- 230000000750 progressive effect Effects 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000002657 fibrous material Substances 0.000 description 3
- 238000005728 strengthening Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000009417 prefabrication Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
Images
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
- C04B14/00—Use of inorganic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of inorganic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B14/38—Fibrous materials; Whiskers
- C04B14/48—Metal
-
- 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
- C04B2111/34—Non-shrinking or non-cracking materials
- C04B2111/343—Crack resistant materials
-
- 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
Landscapes
- 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)
- Civil Engineering (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention discloses a mixing proportion of a novel concrete bridge deck slab, which is composed of the following raw materials in parts by mass: 100 parts of a cementing material, 110-130 parts of steel fibers, 22-26 parts of a water reducing agent, 100-150 parts of organic polymer fiber fine aggregate, 110-130 parts of fly ash, 130 parts of water and 120 parts of mineral aggregate; wherein the cementing material consists of cement and silica fume; the invention can effectively reduce the time cost and economic cost of engineering; the site optimization testing method based on water consumption can accurately calculate the site water consumption to flexibly adjust the mix proportion, and effectively reduces the influence of a site device on the mix proportion.
Description
Technical Field
The invention relates to the technical field of building materials, in particular to a mixing proportion of a novel concrete bridge deck.
Background
The Ultra-High Performance Concrete is called UHPC (Ultra-High Performance Concrete) for short, and is also called RPC (Reactive Powder Concrete), and is the most innovative cement-based engineering material in the last three decades, and the large span of the Performance of the engineering material is realized;
in order to improve the construction quality of the UHPC bridge deck slab, the UHPC bridge deck slab is prefabricated in an industrial mode to be an important measure for ensuring the quality of preparing, pouring and maintaining the ultra-high performance concrete bridge deck slab; the load work efficiency of a factory production line is considered, the prefabricated bridge deck is usually made of steam-cured UHPC, so that the utilization rate of a template, a production pedestal and a maintenance site is improved, the mix proportion design of the ultra-high performance concrete at the current stage is usually trial-matched by using empirical values or related theoretical methods, the performance sensitivity of the UHPC is considered, and the problems of material adaptability and environmental adaptability often occur in the mix proportion design; the difference between the environment of a prefabrication factory and a test room causes the difference between the working performance and the mechanical performance of UHPC, and the problem that the design mix proportion does not meet the construction requirement exists;
the proportion of steel fibers in the existing UHPC bridge deck slab is large, so that the UHPC bridge deck slab is low in cost, the reinforcing and toughening effects of the internal fiber materials are poor, the existing optimization design aiming at the construction proportion is insufficient, the time cost and the economic cost of engineering application are increased, and the proportion of the novel concrete bridge deck slab is provided for the purpose.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides the mixing proportion of the novel concrete bridge deck slab, the concrete bridge deck slab saves steel fibers, the internal fiber material of the concrete bridge deck slab achieves the effects of strengthening and toughening, the production efficiency of a prefabricated factory is improved, and the production cost of the concrete bridge deck slab is reduced; the progressive layered filling optimization method can adapt to UHPC mix proportion design based on various raw materials, progressively and hierarchically fill the whole framework with different components, sequentially optimize the proportion of each component, reduce the experimental amount of trial-matching UHPC by utilizing different methods in a layered manner, and effectively reduce the time cost and the economic cost of engineering; the site optimization testing method based on water consumption can accurately calculate the site water consumption to flexibly adjust the mix proportion, and effectively reduces the influence of a site device on the mix proportion.
In order to solve the technical problems, the invention provides the following technical scheme: the mixing proportion of the novel concrete bridge deck is as follows: 100 parts of a cementing material, 110-130 parts of steel fibers, 22-26 parts of a water reducing agent, 100-150 parts of organic polymer fiber fine aggregate, 110-130 parts of fly ash, 130 parts of water and 120 parts of mineral aggregate; wherein, the cementing material consists of cement and silica fume.
Preferably, the cement material comprises, by weight, 700-760 parts of cement and 180-200 parts of silica fume.
Preferably, the mineral aggregate comprises, by weight, 1100-1200 parts of sand and 90-50 parts of stones.
Preferably, the cement is ordinary portland cement, and the reference number is 52.5; or the silica fume adopts a BK93 semi-dense type, the particle size is 1-20 mu m, and the proportion of the particle size between 3-10 mu m is more than 80%; or the fine aggregate is prepared by machine-made quartz sand by using three grades of coarse sand 0.37-0.67 mm, medium sand 0.31-0.42 mm and fine sand 0.15-0.31 mm; or the steel fiber is short and straight fiber with tensile strength of more than or equal to 2000MPa, length of 13-15 mm and diameter of 0.2 mm; or the water reducing agent is a polycarboxylic acid high-performance water reducing agent or a naphthalene high-efficiency water reducing agent.
Preferably, the slump is 150 +/-20 mm, the expansion is 470 +/-50 mm, the initial setting time is more than or equal to 12h, the final setting time is more than or equal to 13h, the 32d compressive strength is more than or equal to C45, the volume weight is 2360(-10 to +10) kg/m3, the 28d impermeability grade is more than or equal to P10, the 28d drying shrinkage is less than 320 mu epsilon, and the limited expansion rate is more than or equal to 0.018% after 31-day curing in water.
Preferably, one-stage, two-stage and at most three-stage aggregates with different particle sizes are used for preparing novel concrete, and one-stage, two-stage and at most three-stage aggregates are combined in coarse aggregates and fine aggregates with different particle diameters; the particle diameter proportion between aggregates is particularly optimized as follows: the diameter of the large-grade aggregate is more than 2.618 times of that of the small-grade aggregate; preparing extra-coarse novel concrete with the maximum particle size of less than 75mm, and selecting coarse sand or medium sand three-level aggregate for preparation; preparing coarse grain type novel concrete with the maximum grain size of less than 37mm, and selecting coarse sand or medium sand tertiary aggregate for preparation; preparing coarse grain type novel concrete with the maximum grain size of below 25.5mm, and selecting coarse sand or medium sand three-grade aggregate for preparation; preparing medium-grain type novel concrete with the maximum grain diameter of less than 26.5mm, and selecting coarse sand or medium sand tertiary aggregate for preparation; preparing medium-grain type novel concrete with the maximum grain diameter of less than 17.5mm, and selecting coarse sand and extra-fine sand to prepare three-level aggregate; the weight (unit kg/m3) ratio of the composition materials is characterized in that: the dosage of the primary aggregate with the largest particle diameter is 0.3-0.8 time of the apparent density, the dosage of the second large aggregate with the largest particle diameter is 0.2-0.4 time of the apparent density, the dosage of the third large aggregate with the largest particle diameter is 0.1-0.2 time of the apparent density, the dosage of cement is 0-450kg/m3, the optimal dosage is 100-320kg/m3, and a proper amount of water; the void characteristics are: the theoretical void ratio of the high-density aggregate is adjustable and controllable between 10 and 35 percent, and the void ratio of the novel concrete is adjustable and controllable between 5 and 33 percent.
Preferably, the total alkali content in the water reducing agent is less than 1%.
Compared with the prior art, the invention can achieve the following beneficial effects: the concrete bridge deck saves steel fibers, the internal fiber material of the concrete bridge deck achieves the effect of strengthening and toughening, the production efficiency of a prefabricated factory is improved, and the production cost of the concrete bridge deck is reduced; the progressive layered filling optimization method can adapt to UHPC mix proportion design based on various raw materials, progressively and hierarchically fill the whole framework with different components, sequentially optimize the proportion of each component, reduce the experimental amount of trial-matching UHPC by utilizing different methods in a layered manner, and effectively reduce the time cost and the economic cost of engineering; the site optimization testing method based on the water consumption can accurately calculate the water consumption on site to flexibly adjust the mix proportion, and effectively reduces the influence of a site device on the mix proportion.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the invention and together with the description serve to explain the invention and not to limit the invention.
FIG. 1 is a schematic flow chart of the "progressive layered filling optimization method" according to the present invention;
FIG. 2 is a schematic flow chart of the "water consumption based field optimization test method" of the present invention;
Detailed Description
In order to more clearly explain the overall concept of the invention, the following detailed description is given by way of example in conjunction with the accompanying drawings.
In the description of the present invention, it is to be understood that the terms "central," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings, which are simply for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and are not to be construed as limiting the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; the connection can be mechanical connection, electrical connection or communication; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. In the description of the present specification, reference to the description of the terms "one aspect," "some aspects," "an example," "a specific example," or "some examples" or the like means that a particular feature, structure, material, or characteristic described in connection with the aspect or example is included in at least one aspect or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same solution or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more aspects or examples.
Example (b):
the raw materials are mixed according to the following proportion: (Per cubic concrete addition)
Cement: ordinary portland cement, the label is 52.5, the cement consumption is 760 kg;
silica fume: 200 kg;
130kg of steel fibers;
26kg of water reducing agent;
coarse and fine aggregates: 500 kg;
the water is drinkable water, and the dosage is 130 kg;
fly ash: the dosage is 130 KG;
specifically, the method comprises the following steps: the cementing material comprises 700-760 parts of cement and 180-200 parts of silica fume; specifically, the method comprises the following steps: the mineral aggregate comprises the following components, by weight, 1100-1200 parts of sand and 90-50 parts of stones; specifically, the method comprises the following steps: the cement is ordinary portland cement with the reference number of 52.5; or the silica fume adopts a BK93 semi-dense type, the particle size is 1-20 mu m, and the proportion of the particle size between 3-10 mu m is more than 80%; or the fine aggregate is prepared by machine-made quartz sand with the three grades of coarse sand 0.37-0.67 mm, medium sand 0.31-0.42 mm and fine sand 0.15-0.31 mm; or the steel fiber is short and straight fiber with the tensile strength of more than or equal to 2000MPa, the length of 13-15 mm and the diameter of 0.2 mm; or the water reducing agent is a polycarboxylic acid high-performance water reducing agent or a naphthalene high-efficiency water reducing agent; specifically, the method comprises the following steps: slump 150 +/-20 mm, expansion degree 470 +/-50 mm, initial setting time more than or equal to 12h, final setting time more than or equal to 13h, 32d compressive strength more than or equal to C45, volume weight 2360(-10 to +10) kg/m3, 28d impermeability grade more than or equal to P10, 28d drying shrinkage less than 320 mu epsilon, and 31-day maintenance in water, wherein the limited expansion rate is more than or equal to 0.018%; specifically, the method comprises the following steps: preparing novel concrete by using aggregates with different particle sizes in a first stage, a second stage and at most three stages, and combining the aggregates in the first stage, the second stage and at most three stages in coarse aggregates and fine aggregates with different particle diameters; the particle diameter proportion between aggregates is particularly optimized as follows: the diameter of the large-grade aggregate is more than 2.618 times of that of the small-grade aggregate; preparing extra-coarse novel concrete with the maximum particle size of less than 75mm, and selecting coarse sand or medium sand three-grade aggregate for preparation; preparing coarse grain type novel concrete with the maximum grain size of less than 37mm, and selecting coarse sand or medium sand tertiary aggregate for preparation; preparing coarse grain type novel concrete with the maximum grain size of below 25.5mm, and selecting coarse sand or medium sand tertiary aggregate for preparation; preparing medium-grain type novel concrete with the maximum grain diameter of less than 26.5mm, and selecting coarse sand or medium sand tertiary aggregate for preparation; preparing medium-grain type novel concrete with the maximum grain diameter of less than 17.5mm, and selecting superfine sand three-grade aggregate for preparation; the weight (unit kg/m3) ratio of the composition materials is characterized in that: the dosage of the primary aggregate with the largest particle diameter is 0.3-0.8 time of the apparent density, the dosage of the second large aggregate with the largest particle diameter is 0.2-0.4 time of the apparent density, the dosage of the third large aggregate with the largest particle diameter is 0.1-0.2 time of the apparent density, the dosage of cement is 0-450kg/m3, the optimal dosage is 100-320kg/m3, and a proper amount of water; the void characteristics are: the theoretical void ratio of the high-density aggregate is adjustable and controllable between 10 and 35 percent, and the void ratio of the novel concrete is adjustable and controllable between 5 and 33 percent; specifically, the method comprises the following steps: the total alkali content in the water reducing agent is less than 1 percent; the progressive layered filling optimization method can adapt to UHPC mix proportion design based on various raw materials, progressively and hierarchically fill the whole framework with different components, sequentially optimize the proportion of each component, reduce the experimental amount of trial-prepared UHPC by hierarchically utilizing different methods, and effectively reduce the time cost and the economic cost of engineering; the site optimization testing method based on the water consumption can accurately calculate the water consumption on site to flexibly adjust the mix proportion, and effectively reduces the influence of a site device on the mix proportion.
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 (7)
1. The mixing proportion of the novel concrete bridge deck is characterized by comprising the following raw materials in parts by mass: 100 parts of a cementing material, 110-130 parts of steel fibers, 22-26 parts of a water reducing agent, 100-150 parts of organic polymer fiber fine aggregate, 110-130 parts of fly ash, 130 parts of water and 120 parts of mineral aggregate;
wherein, the cementing material consists of cement and silica fume.
2. The mixing ratio of the novel concrete bridge deck slab as claimed in claim 1, wherein: the cementing material comprises 700-760 parts of cement and 180-200 parts of silica fume.
3. The mixing proportion of the novel concrete bridge deck slab as claimed in claim 1, wherein: the mineral aggregate comprises, by weight, 1100-1200 parts of sand and 90-50 parts of stones.
4. The mixing ratio of the novel concrete bridge deck slab as claimed in claim 2, wherein: the cement is ordinary portland cement with the reference number of 52.5; or the silica fume adopts a BK93 semi-dense type, the particle size is 1-20 mu m, and the proportion of the particle size between 3-10 mu m is more than 80%; or the fine aggregate is prepared by machine-made quartz sand with the three grades of coarse sand 0.37-0.67 mm, medium sand 0.31-0.42 mm and fine sand 0.15-0.31 mm; or the steel fiber is short and straight fiber with tensile strength of more than or equal to 2000MPa, length of 13-15 mm and diameter of 0.2 mm; or the water reducing agent is a polycarboxylic acid high-performance water reducing agent or a naphthalene high-efficiency water reducing agent.
5. The mixing ratio of the novel concrete bridge deck slab as claimed in claim 1, wherein: slump 150 +/-20 mm, expansion degree 470 +/-50 mm, initial setting time more than or equal to 12h, final setting time more than or equal to 13h, 32d compressive strength more than or equal to C45, volume weight 2360(-10 to +10) kg/m3, 28d impermeability grade more than or equal to P10, 28d drying shrinkage less than 320 mu epsilon, and 31-day maintenance in water, wherein the limited expansion rate is more than or equal to 0.018 percent.
6. The mixing ratio of the novel concrete bridge deck slab as claimed in claim 1, wherein: preparing novel concrete by using aggregates with different particle sizes in a first stage, a second stage and at most three stages, and combining the aggregates in the first stage, the second stage and at most three stages in coarse aggregates and fine aggregates with different particle diameters; the particle diameter proportion between aggregates is particularly optimized as follows: the diameter of the large-grade aggregate is more than 2.618 times of that of the small-grade aggregate; preparing extra-coarse novel concrete with the maximum particle size of less than 75mm, and selecting coarse sand or medium sand three-level aggregate for preparation; preparing coarse grain type novel concrete with the maximum grain size of less than 37mm, and selecting coarse sand or medium sand tertiary aggregate for preparation; preparing coarse grain type novel concrete with the maximum grain size of below 25.5mm, and selecting coarse sand or medium sand tertiary aggregate for preparation; preparing medium-grain type novel concrete with the maximum grain diameter of less than 26.5mm, and selecting coarse sand or medium sand tertiary aggregate for preparation; preparing medium-grain type novel concrete with the maximum grain diameter of less than 17.5mm, and selecting coarse sand and extra-fine sand to prepare three-level aggregate; the weight (unit kg/m3) ratio of the composition materials is characterized in that: the dosage of the first-grade aggregate with the largest particle diameter is 0.3-0.8 time of the apparent density, the dosage of the second large aggregate with the particle diameter is 0.2-0.4 time of the apparent density, the dosage of the third large aggregate with the particle diameter is 0.1-0.2 time of the apparent density, the dosage of cement is 0-450kg/m3, the optimal dosage is 100-320kg/m3, and a proper amount of water; the gap characteristics are as follows: the theoretical void ratio of the high-density aggregate is adjustable and controllable between 10 and 35 percent, and the void ratio of the novel concrete is adjustable and controllable between 5 and 33 percent.
7. The mixing ratio of the novel concrete bridge deck slab as claimed in claim 1, wherein: the total alkali content in the water reducing agent is less than 1%.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116254764A (en) * | 2023-02-21 | 2023-06-13 | 清华大学 | Concrete bridge deck steaming-free UHPC pavement layer and construction method and application thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105198339A (en) * | 2015-10-28 | 2015-12-30 | 上海罗洋新材料科技有限公司 | Ultrahigh-performance cement-based composite material |
| CN114315284A (en) * | 2022-01-18 | 2022-04-12 | 山东省交通规划设计院集团有限公司 | Steam-cured type ultrahigh-performance concrete for prefabricated bridge deck slab and rapid design and optimization method for mix proportion |
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- 2022-07-02 CN CN202210775976.0A patent/CN115028414A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105198339A (en) * | 2015-10-28 | 2015-12-30 | 上海罗洋新材料科技有限公司 | Ultrahigh-performance cement-based composite material |
| CN114315284A (en) * | 2022-01-18 | 2022-04-12 | 山东省交通规划设计院集团有限公司 | Steam-cured type ultrahigh-performance concrete for prefabricated bridge deck slab and rapid design and optimization method for mix proportion |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116254764A (en) * | 2023-02-21 | 2023-06-13 | 清华大学 | Concrete bridge deck steaming-free UHPC pavement layer and construction method and application thereof |
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Application publication date: 20220909 |