CN106915934A - A kind of impervious frost thawing resistance concrete mix and its blending method - Google Patents
A kind of impervious frost thawing resistance concrete mix and its blending method Download PDFInfo
- Publication number
- CN106915934A CN106915934A CN201511004543.1A CN201511004543A CN106915934A CN 106915934 A CN106915934 A CN 106915934A CN 201511004543 A CN201511004543 A CN 201511004543A CN 106915934 A CN106915934 A CN 106915934A
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- CN
- China
- Prior art keywords
- weight portions
- fibre
- concrete mix
- impervious
- thawing resistance
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28C5/00—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions
- B28C5/40—Mixing specially adapted for preparing mixtures containing fibres
- B28C5/402—Methods
-
- 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
- C04B16/00—Use of organic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of organic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B16/04—Macromolecular compounds
- C04B16/06—Macromolecular compounds fibrous
- C04B16/0616—Macromolecular compounds fibrous from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
- C04B16/0625—Polyalkenes, e.g. polyethylene
- C04B16/0633—Polypropylene
-
- 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
- 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
- C04B2111/27—Water resistance, i.e. waterproof or water-repellent 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
- 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
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Structural Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Inorganic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Road Paving Structures (AREA)
Abstract
The present invention relates to a kind of impervious frost thawing resistance concrete mix, its component for including following ratio of weight and number：Portland cement 286-290 weight portions；Fine sand 430-450 weight portions；Medium coarse sand 250-270 weight portions；Stone 1070-1080 weight portions；Flyash 28-32 weight portions；Miberal powder 58-62 weight portions；Water 130-135 weight portions；Pumping admixture 7.6-7.9 weight portions；Mesh polypropylene-fibre 0.9-1.8 weight portions；Gas tracting subtractive agent 24-26 weight portions.The optimization that the present invention passes through grading of aggregates, the control of sand coarse aggregate ratio and the ratio of mud, and add the mesh polypropylene-fibre of superfine fibre, the mesh polypropylene-fibre and fine sand for enabling superfine fibre are realized organically combining, the caking property of fine sand and other dispensings is improved, intensity and impermeability, durability, crack resistance, the workability reduction occurred during ultra fine sand concrete batching is efficiently solved the problems, such as, engineering construction cost is greatly reduced, gas tracting subtractive agent is added simultaneously, improves concrete impervious freeze-thaw resistance.
Description
Technical field
The present invention relates to a kind of construction material, particularly a kind of impervious frost thawing resistance concrete mix and
Its blending method.
Background technology
Concrete refers generally to cement as major gelled material, with water, sand, stone, mixes if necessary
Enter chemical admixture and mineral admixture, by proper proportion coordinate, by uniform stirring, it is closely knit into
Type and the artificial stone of maintenance hardening.Concrete is big, wide using scope as consumption in the world
Construction material, its good mechanical property, economy and to the adaptability of environment in various countries and
Area has obtained extensive development, and with the development of society, people propose to the performance of building
Requirement higher.Used as the most frequently used structure type of field of civil engineering, it constructs concrete structure
It is extremely complex with Service Environment, in adverse circumstances the endurance issues of concrete especially protrude, into
It is domestic and international study hotspot.Its intensity and impervious water resistance be influence concrete durability it is important because
Element.Its intensity of concrete in the market and water resistance are less desirable, poor durability, it is impossible to
The need for meeting people's high request.
Water-tight concrete improves pore structure, so as to reduce ooze by improving the packing of concrete
Saturating passage, improves impervious.Conventional method is to mix research work of air entrained type additive, makes inside concrete
Disconnected bubble is produced, capillary channel is blocked, changes pore structure, so as to improve concrete
Impermeability.Additionally, reduce the ratio of mud, from appropriate kind and the cement of strength grade, it is ensured that
Construction quality, particularly note vibration compacting, maintenance fully etc., all to improve anti-permeability performance have weight
Act on.
The concrete regulation that existing impervious structure is used can only use medium coarse sand to prepare.But in the Yellow River
The medium coarse sand resource in basin area is deficienter, and ultra fine sand resource is very abundant.If from other regions
Transport medium coarse sand can then cause water-tight concrete cost to remain high.
When job site temperature is relatively low, in addition it is also necessary to meet freeze-thaw resistance requirement.
The content of the invention
It is an object of the invention to overcome the deficiencies in the prior art, there is provided one kind using ultra fine sand with it is thick
Sand participates in mix-design, optimizes grading of aggregates and the ratio of mud, realizes the impervious and strong of concrete
Degree meets the impervious frost thawing resistance concrete mix and its blending method of use requirement.
The present invention solves its technical problem and is achieved through the following technical solutions：
A kind of impervious frost thawing resistance concrete mix, it is characterised in that：It includes following parts by weight
The component of ratio：
And, the modulus of fineness of described fine sand is 1-2mm.
And, the modulus of fineness of described medium coarse sand is 4-5mm.
And, the particle diameter of described stone is 5-25mm.
And, described portland cement is P.O42.5 portland cements.
And, described miberal powder is S95 grades of miberal powder.
And, the length of described mesh polypropylene-fibre is 15-20mm.
A kind of blending method of impervious frost thawing resistance concrete mix, it is characterised in that：By weight
Put into stone, flyash, miberal powder, mesh polypropylene-fibre, coarse sand and fine sand successively while stirring,
Stirring two minutes, mesh polypropylene-fibre is fully opened, be subsequently adding portland cement, water,
Gas tracting subtractive agent and pumping admixture, stir.
The advantages of the present invention are：
The blending method and its blending method of impervious frost thawing resistance concrete mix of the present invention,
By the optimization of grading of aggregates, the control of sand coarse aggregate ratio and the ratio of mud, and add the polypropylene of superfine fibre
Reticular fibre, the mesh polypropylene-fibre and fine sand for enabling superfine fibre is realized organically combining, and carries
The caking property of fine sand high and other dispensings, efficiently solves occur during ultra fine sand concrete batching strong
Degree and impermeability, durability, crack resistance, the problem of workability reduction, greatly reduce engineering and build
This is set as, meanwhile, gas tracting subtractive agent is added, improve concrete impervious freeze-thaw resistance.
Specific embodiment
Embodiment 1
A kind of impervious frost thawing resistance concrete mix, every cubic metre of raw material contains：
The modulus of fineness of fine sand is 1-2mm.The modulus of fineness of medium coarse sand is 4-5mm.The grain of stone
Footpath is 5-25mm.Portland cement is PO42.5 portland cements.Miberal powder is S95 grades of miberal powder.
The length of mesh polypropylene-fibre is 15-20mm.
The blending method of above-mentioned impervious frost thawing resistance concrete mix, while stirring successively input stone,
Flyash, miberal powder, mesh polypropylene-fibre, coarse sand and fine sand, stir 2 minutes, make polypropylene
Reticular fibre is fully opened, and is subsequently adding portland cement, water and pumping admixture, is stirred.
Show through test of many times research, the C30/P6 water-tight concretes prepared using the present invention program, 7d is resisted
Compressive Strength is 22.7Mpa, and 28d compression strength is 33.8Mpa, its intensity and impermeability, durability,
The properties such as wearability, dry-shrinkage deformed meet the regulation of related code through experiment to evaluation.Together
When, gas tracting subtractive agent is added, improve concrete impervious freeze-thaw resistance.
Embodiment 2
The modulus of fineness of fine sand is 1-2mm.The modulus of fineness of medium coarse sand is 4-5mm.The grain of stone
Footpath is 5-25mm.Portland cement is PO42.5 portland cements.Miberal powder is S95 grades of miberal powder.
The length of mesh polypropylene-fibre is 15-20mm.
The blending method of above-mentioned impervious frost thawing resistance concrete mix, while stirring successively input stone,
Flyash, miberal powder, mesh polypropylene-fibre, coarse sand and fine sand, stir 2 minutes, make polypropylene
Reticular fibre is fully opened, and is subsequently adding portland cement, water and pumping admixture, is stirred.
Show through test of many times research, the C30/P6 water-tight concretes prepared using the present invention program, 7d is resisted
Compressive Strength is 21.5Mpa, and 28d compression strength is 31.5Mpa, its intensity and impermeability, durability,
The properties such as wearability, dry-shrinkage deformed meet the regulation of related code through experiment to evaluation.Together
When, gas tracting subtractive agent is added, improve concrete impervious freeze-thaw resistance.
Embodiment 3
A kind of impervious frost thawing resistance concrete mix, every cubic metre of raw material contains：
The modulus of fineness of fine sand is 1-2mm.The modulus of fineness of medium coarse sand is 4-5mm.The grain of stone
Footpath is 5-25mm.Portland cement is PO42.5 portland cements.Miberal powder is S95 grades of miberal powder.
The length of mesh polypropylene-fibre is 15-20mm.
The blending method of above-mentioned impervious frost thawing resistance concrete mix, while stirring successively input stone,
Flyash, miberal powder, mesh polypropylene-fibre, coarse sand and fine sand, stir 2 minutes, make polypropylene
Reticular fibre is fully opened, and is subsequently adding portland cement, water and pumping admixture, is stirred.
Show through test of many times research, the C30/P6 water-tight concretes prepared using the present invention program, 7d is resisted
Compressive Strength is 23.3Mpa, and 28d compression strength is 34.8Mpa, its intensity and impermeability, durability,
The properties such as wearability, dry-shrinkage deformed meet the regulation of related code through experiment to evaluation.Together
When, gas tracting subtractive agent is added, improve concrete impervious freeze-thaw resistance.
Claims (8)
1. a kind of impervious frost thawing resistance concrete mix, it is characterised in that：Its component for including following ratio of weight and number：
2. a kind of impervious frost thawing resistance concrete mix according to claim 1, it is characterised in that：The modulus of fineness of described fine sand is 1-2mm.
3. a kind of impervious frost thawing resistance concrete mix according to claim 1, it is characterised in that：The modulus of fineness of described medium coarse sand is 4-5mm.
4. a kind of impervious frost thawing resistance concrete mix according to claim 1, it is characterised in that：The particle diameter of described stone is 5-25mm.
5. a kind of impervious frost thawing resistance concrete mix according to claim 1, it is characterised in that：Described portland cement is P.O42.5 portland cements.
6. a kind of impervious frost thawing resistance concrete mix according to claim 1, it is characterised in that：Described miberal powder is S95 grades of miberal powder.
7. a kind of impervious frost thawing resistance concrete mix according to claim 1, it is characterised in that：The length of described mesh polypropylene-fibre is 15-20mm.
8. a kind of blending method of impervious frost thawing resistance concrete mix as claimed in claim 1, it is characterised in that：Put into stone, flyash, miberal powder, mesh polypropylene-fibre, coarse sand and fine sand successively while stirring by weight, stirring two minutes, mesh polypropylene-fibre is fully opened, be subsequently adding portland cement, water, gas tracting subtractive agent and pumping admixture, stir.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511004543.1A CN106915934A (en) | 2015-12-25 | 2015-12-25 | A kind of impervious frost thawing resistance concrete mix and its blending method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511004543.1A CN106915934A (en) | 2015-12-25 | 2015-12-25 | A kind of impervious frost thawing resistance concrete mix and its blending method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106915934A true CN106915934A (en) | 2017-07-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201511004543.1A Pending CN106915934A (en) | 2015-12-25 | 2015-12-25 | A kind of impervious frost thawing resistance concrete mix and its blending method |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108911625A (en) * | 2018-07-26 | 2018-11-30 | 上海石化安东混凝土有限公司 | Impervious anti-crack concrete |
| CN109928703A (en) * | 2017-12-18 | 2019-06-25 | 中国铁道科学研究院铁道建筑研究所 | A kind of cracking resistance frost-resistant concrete for railway deck waterproof protective layer |
| CN110526638A (en) * | 2019-10-15 | 2019-12-03 | 巴州鼎力杆塔有限公司 | A kind of high performance concrete electric pole with freeze thawing resistance and chloride-penetration resistance |
| CN111099860A (en) * | 2019-12-23 | 2020-05-05 | 武汉君善建混凝土有限公司 | High-performance anti-freezing concrete and preparation method thereof |
| CN113173757A (en) * | 2021-05-11 | 2021-07-27 | 宁波市镇海景联混凝土有限公司 | Low-temperature-resistant concrete and preparation method thereof |
| CN114368946A (en) * | 2022-01-11 | 2022-04-19 | 河北工程大学 | Mineral admixture hydraulic concrete |
| CN114409317A (en) * | 2022-02-25 | 2022-04-29 | 陕西越众混凝土有限公司 | Underwater concrete and preparation method thereof |
-
2015
- 2015-12-25 CN CN201511004543.1A patent/CN106915934A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109928703A (en) * | 2017-12-18 | 2019-06-25 | 中国铁道科学研究院铁道建筑研究所 | A kind of cracking resistance frost-resistant concrete for railway deck waterproof protective layer |
| CN108911625A (en) * | 2018-07-26 | 2018-11-30 | 上海石化安东混凝土有限公司 | Impervious anti-crack concrete |
| CN110526638A (en) * | 2019-10-15 | 2019-12-03 | 巴州鼎力杆塔有限公司 | A kind of high performance concrete electric pole with freeze thawing resistance and chloride-penetration resistance |
| CN111099860A (en) * | 2019-12-23 | 2020-05-05 | 武汉君善建混凝土有限公司 | High-performance anti-freezing concrete and preparation method thereof |
| CN113173757A (en) * | 2021-05-11 | 2021-07-27 | 宁波市镇海景联混凝土有限公司 | Low-temperature-resistant concrete and preparation method thereof |
| CN114368946A (en) * | 2022-01-11 | 2022-04-19 | 河北工程大学 | Mineral admixture hydraulic concrete |
| CN114409317A (en) * | 2022-02-25 | 2022-04-29 | 陕西越众混凝土有限公司 | Underwater concrete and preparation method thereof |
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Application publication date: 20170704 |