CN109020343A - The modified water-permeable cement concrete of diatomite-flyash-silicon ash - Google Patents
The modified water-permeable cement concrete of diatomite-flyash-silicon ash Download PDFInfo
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- CN109020343A CN109020343A CN201811097150.3A CN201811097150A CN109020343A CN 109020343 A CN109020343 A CN 109020343A CN 201811097150 A CN201811097150 A CN 201811097150A CN 109020343 A CN109020343 A CN 109020343A
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- flyash
- diatomite
- water
- silicon ash
- concrete
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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
-
- 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)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention discloses a kind of modified water-permeable cement concretes of diatomite-flyash-silicon ash, belong to technical field of concrete, it includes: coarse aggregate 1514kg that its every cubic metre, which prepares raw material, cement 364-435kg, flyash 12-37kg, silicon ash 12-25kg, diatomite 12-37kg, water 136-142kg, water-reducing agent 1.8-2.2kg.Pervious concrete of the invention uses diatomite, flyash and silicon ash to replace part of cement as cementitious material, the intensity of pervious concrete is improved under conditions of not reducing water permeability, the compression strength of pervious concrete reaches 30MPa, flexural strength reaches 5MPa, coefficient of permeability reaches 4.0mm/s, can be widely used for the pavement structures such as park, pavement, light-duty traffic.Flyash, silicon ash are industrial residue, and natural diatomaceous earth impurity is more, and development cost is high, are applied to pervious concrete, waste utilization not only may be implemented, while can reduce the production cost of pervious concrete, improve economic benefit.
Description
Technical field
The invention belongs to technical field of concrete, in particular to a kind of water-permeable cement concrete.
Background technique
During Modernized City Construction, the original soil layer of urban surface is gradually blocked water by building and concrete etc.
Material is replaced, although the road of the ground surface materials making such as normal concrete brings great convenience to the trip of people,
It is to consider in terms of ecological environment, material water-proof material hinders the water circulation of environment, since common concrete material is not permeable
Property, cause the impermeable recharge of groundwater into lower soil of rainwater, the excessive of urban groundwater is asked in addition, with leading to city
It is lauched that potential drop is low, coastal cities influence the effective use of rainwater since the reduction of level of ground water will lead to inwelling.In addition
, all there is very big relationship in the problems such as " tropical island effect " and urban waterlogging with material water-proof materials such as common concrete materials.
Due to the generation of the above problem, it is now desired to one kind is not only able to satisfy Urban traffic demand, but also can with ecological environment and
Humorous symbiosis provides the pavement material of comfortable living environment for people.Pervious concrete is a kind of environmental environment-friendly concrete.It
It is a kind of concrete with continuous hole by specially treated, there is certain intensity, and there is certain water penetration, it can
To alleviate well due to the waterproof influence mated formation and generated to urban environment.
For pervious concrete, cementitious material is the important component of decision pervious concrete mechanical property, while outer
The addition of agent is added also to have an impact to the mechanical property of pervious concrete.Therefore, patent published at present mainly passes through and changes
Become cementitious material composition and dosage, add the modes such as other modified materials and improve the performance of pervious concrete, main modified material
Have: sand, flyash, silicon ash, polymer, fiber etc.；Application No. is the patents of invention of CN201711201784.4 to disclose " one kind
Pervious concrete and preparation method thereof ", main modified material are polypropylene fibre and steel fibre；Application No. is
The patent of invention of CN201710970466.8 discloses " a kind of high-strength water-permeable concrete and preparation method thereof ", main modified material
For silicon ash, silica and ester-polyurethane resin emulsion；Application No. is the patents of invention of CN201711447356.X to disclose " one kind
Red mud permeable concrete and preparation method thereof ", main modified material are epoxy resin and basalt fibre；Application No. is
The patent of invention of CN201710680649.6 discloses " a kind of pervious concrete ", and main modified material is latex powder and polyethylene
Alcohol fiber.Techniques disclosed above is mainly modified pervious concrete using a variety of modified materials, is primarily present following lack
Fall into: (1) needs such as modified material polymer, fiber, lotion are processed on the basis of raw material, compared to other materials that are gelled
Material, complex process, price are higher, and pervious concrete cost is caused to increase；(2) it is difficult to realize to mix and stir technique for existing pervious concrete
The cotton-shaped modifying agent such as fiber it is evenly dispersed, the pervious concrete performance error of preparation is larger.
Summary of the invention
The purpose of the invention is to overcome the problems of the prior art, it is permeable to provide diatomite-flyash-silicon ash modification
Cement concrete, the water-permeable cement concrete is on the basis of meeting intensity requirement while having splendid water penetration.
The present invention provides the modified water-permeable cement concretes of diatomite-flyash-silicon ash, which is characterized in that every cubic metre
It includes: regenerated coarse aggregate 1514kg, cement 364-435kg, flyash 12-37kg, silicon ash that water-permeable cement concrete, which prepares raw material,
12-25kg, diatomite 12-37kg, water 136-142kg, water-reducing agent 1.8-2.2kg.
Preferably, the Design Air Voids of the regenerated coarse aggregate are 15%.
Preferably, the regenerated coarse aggregate partial size is 4.75-9.5mm.
Preferably, the diatomite is three-level diatomite.
Preferably, the flyash is three-level flyash.
Preferably, the mass ratio of the flyash, diatomite and silicon ash is 1-3:1-3:1-3.
Preferably, the water-cement ratio used in the water-permeable cement concrete is 0.30.
Compared with prior art, the beneficial effects of the present invention are:
1) pervious concrete of the invention is all satisfied wanting for related specifications on compression strength, flexural strength and coefficient of permeability
While asking, also meet the requirement of the economy in Process of Engineering Construction, flyash, silicon ash is industrial residue, is applied to
Pervious concrete is, it can be achieved that industrial residue recycles.
2) diatomite is a kind of storage natural material abundant, and natural diatomaceous earth is because the impurity contained is more, development and utilization
Higher cost is substantially considered waste, is applied to pervious concrete, it can be achieved that natural diatomaceous earth as cementitious material
A wide range of development and utilization；Using diatomite, silicon ash and flyash replace part of cement as cementitious material, not only realize useless
Object utilizes, while also reducing pervious concrete production cost, alleviates the dependence to cement consumption, improves economic benefit.
3) in addition, pervious concrete intensity is lower (20MPa or so) at present, it is mainly used in non-traffic loading road surface knot
Structure, such as park, pavement, the compression strength of pervious concrete of the invention reach 30MPa, and flexural strength reaches 5MPa, permeable system
Number can reach 4.0mm/s, and the intensity of pervious concrete is improved under conditions of not reducing water permeability, can be used for light-duty traffic lotus
Pavement structure is carried, the application range of pervious concrete has been widened.
Specific embodiment
Specific embodiments of the present invention will be described in detail below, it is to be understood that protection scope of the present invention is not
It is restricted by specific implementation.Based on the embodiments of the present invention, those of ordinary skill in the art are not making creativeness
Every other embodiment obtained, shall fall within the protection scope of the present invention under the premise of labour.
Embodiment 1
The embodiment of the present invention mentions the modified water-permeable cement concrete of diatomite-flyash-silicon ash, and every cubic metre of permeable cement is mixed
It includes: regenerated coarse aggregate 1514kg that solidifying soil, which prepares raw material, cement 435kg, three-level flyash 13kg, silicon ash 13kg, three-level diatom
Native 13kg, water 142kg, water-reducing agent 2.2g.
Wherein, the Design Air Voids of regenerated coarse aggregate are 15%, and regenerated coarse aggregate partial size is 8mm.
Embodiment 2
The embodiment of the present invention mentions the modified water-permeable cement concrete of diatomite-flyash-silicon ash, and every cubic metre of permeable cement is mixed
It includes: regenerated coarse aggregate 1514kg that solidifying soil, which prepares raw material, cement 374kg, three-level flyash 35kg, silicon ash 12kg, three-level diatom
Native 35kg, water 139kg, water-reducing agent 1.9g.
Wherein, the Design Air Voids of regenerated coarse aggregate are 15%, and regenerated coarse aggregate partial size is 4.75mm.
Embodiment 3
The embodiment of the present invention mentions the modified water-permeable cement concrete of diatomite-flyash-silicon ash, and every cubic metre of permeable cement is mixed
It includes: regenerated coarse aggregate 1514kg that solidifying soil, which prepares raw material, cement 375kg, three-level flyash 23kg, silicon ash 23kg, three-level diatom
Native 34kg, water 136kg, water-reducing agent 1.9g.
Wherein, the Design Air Voids of regenerated coarse aggregate are 15%, and regenerated coarse aggregate partial size is 9.5mm.
Embodiment 4
The embodiment of the present invention mentions the modified water-permeable cement concrete of diatomite-flyash-silicon ash, and every cubic metre of permeable cement is mixed
It includes: regenerated coarse aggregate 1514kg that solidifying soil, which prepares raw material, cement 397kg, three-level flyash 24kg, silicon ash 12kg, three-level diatom
Native 36kg, water 141kg, water-reducing agent 2.0g.
Wherein, the Design Air Voids of regenerated coarse aggregate are 15%, and regenerated coarse aggregate partial size is 6.5mm.
Embodiment 5
The embodiment of the present invention mentions the modified water-permeable cement concrete of diatomite-flyash-silicon ash, and every cubic metre of permeable cement is mixed
It includes: regenerated coarse aggregate 1514kg that solidifying soil, which prepares raw material, cement 385kg, three-level flyash 35kg, silicon ash 23kg, three-level diatom
Native 23kg, water 140kg, water-reducing agent 1.9g.
Wherein, the Design Air Voids of regenerated coarse aggregate are 15%, and regenerated coarse aggregate partial size is 7.5mm.
After measured, the compression strength for the water-permeable cement concrete that embodiment 1 obtains reaches 30MPa, and flexural strength reaches 5MPa, thoroughly
Water coefficient reaches 4.0mm/s.
Although preferred embodiments of the present invention have been described, it is created once a person skilled in the art knows basic
Property concept, then additional changes and modifications may be made to these embodiments.So it includes excellent that the following claims are intended to be interpreted as
It selects embodiment and falls into all change and modification of the scope of the invention.
Obviously, various changes and modifications can be made to the invention without departing from essence of the invention by those skilled in the art
Mind and range.In this way, if these modifications and changes of the present invention belongs to the range of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to include these modifications and variations.
Claims (7)
1. the modified water-permeable cement concrete of diatomite-flyash-silicon ash, which is characterized in that every cubic metre of water-permeable cement concrete
Preparing raw material includes: regenerated coarse aggregate 1514kg, cement 364-435kg, flyash 12-37kg, silicon ash 12-25kg, diatomite
12-37kg, water 136-142kg, water-reducing agent 1.8-2.2kg.
2. diatomite-flyash as described in claim 1-the modified water-permeable cement concrete of silicon ash, which is characterized in that it is described again
The Design Air Voids of raw coarse aggregate are 15%.
3. diatomite-flyash as described in claim 1-the modified water-permeable cement concrete of silicon ash, which is characterized in that it is described again
Raw coarse aggregate size is 4.75-9.5mm.
4. the modified water-permeable cement concrete of diatomite-flyash as described in claim 1-silicon ash, which is characterized in that the silicon
Diatomaceous earth is three-level diatomite.
5. the modified water-permeable cement concrete of diatomite-flyash as described in claim 1-silicon ash, which is characterized in that the powder
Coal ash is three-level flyash.
6. the modified water-permeable cement concrete of diatomite-flyash as described in claim 1-silicon ash, which is characterized in that the powder
The mass ratio of coal ash, diatomite and silicon ash is 1-3:1-3:1-3.
7. the modified water-permeable cement concrete of diatomite-flyash as described in claim 1-silicon ash, which is characterized in that described
The water-cement ratio used in water cement concrete is 0.30.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811097150.3A CN109020343A (en) | 2018-09-20 | 2018-09-20 | The modified water-permeable cement concrete of diatomite-flyash-silicon ash |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811097150.3A CN109020343A (en) | 2018-09-20 | 2018-09-20 | The modified water-permeable cement concrete of diatomite-flyash-silicon ash |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110845194A (en) * | 2019-11-12 | 2020-02-28 | 中国地质科学院郑州矿产综合利用研究所 | Pervious concrete prepared from brick slag recycled aggregate and preparation method thereof |
| CN111039620A (en) * | 2019-12-20 | 2020-04-21 | 南京大学盐城环保技术与工程研究院 | Nitrogen and phosphorus removal ecological permeable material and preparation method thereof |
| CN114508019A (en) * | 2022-03-23 | 2022-05-17 | 长安大学 | Urban tunnel drainage system based on sponge city idea |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110845194A (en) * | 2019-11-12 | 2020-02-28 | 中国地质科学院郑州矿产综合利用研究所 | Pervious concrete prepared from brick slag recycled aggregate and preparation method thereof |
| CN111039620A (en) * | 2019-12-20 | 2020-04-21 | 南京大学盐城环保技术与工程研究院 | Nitrogen and phosphorus removal ecological permeable material and preparation method thereof |
| CN111039620B (en) * | 2019-12-20 | 2022-03-08 | 南京大学盐城环保技术与工程研究院 | Nitrogen and phosphorus removal ecological permeable material and preparation method thereof |
| CN114508019A (en) * | 2022-03-23 | 2022-05-17 | 长安大学 | Urban tunnel drainage system based on sponge city idea |
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