CN109293294A - A kind of side slope deep layer gutter enhancement eco-concrete - Google Patents
A kind of side slope deep layer gutter enhancement eco-concrete Download PDFInfo
- Publication number
- CN109293294A CN109293294A CN201811166807.7A CN201811166807A CN109293294A CN 109293294 A CN109293294 A CN 109293294A CN 201811166807 A CN201811166807 A CN 201811166807A CN 109293294 A CN109293294 A CN 109293294A
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- China
- Prior art keywords
- gutter
- side slope
- eco
- concrete
- deep layer
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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
-
- 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
- C04B2111/00017—Aspects relating to the protection of the environment
-
- 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
- C04B2111/00767—Uses not provided for elsewhere in C04B2111/00 for waste stabilisation purposes
-
- 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
Abstract
The invention discloses a kind of structure types in side slope deep layer gutter, and disclose a kind of side slope deep layer gutter enhancement eco-concrete proportion for side slope deep layer gutter.Side slope deep layer gutter structure includes parallel gutter, collects gutter, compacted clay plug and side slope.Side slope deep layer gutter structure is simple, easy for construction.Side slope deep layer gutter enhancement eco-concrete includes the materials such as cement, flyash, natural coarse aggregate, waste shell, nano silica fume, high efficiency water reducing agent.Eco-concrete incorporation flyash and high efficiency water reducing agent disclosed in this invention effectively improve the working performance and porosity of eco-concrete.Nano silica fume, which is added, greatly improved the intensity and durability of eco-concrete.Part natural aggregate is substituted using broken waste shell, improves the drainage effect of eco-concrete.This eco-concrete proportion can not only while keeping eco-concrete high porosity intensity with higher, meet drainage and safety engine request, while can largely consume waste shell, gather materials on the spot, it is economic and environment-friendly.
Description
Technical field
The invention belongs to field of solid waste treating technology, and it is permeable mixed to be related to a kind of side slope deep layer gutter enhancement
Solidifying soil.
Background technique
The most effectual way for improving slope stability is exactly the pore water pressure reduced in slope soil, is led in Practical Project
Can gutter be often set in side slope to reach solution this problem.It is contacted to enhance the water body in gutter and side slope soil,
Generally use panel revetment of the eco-concrete as gutter.Eco-concrete is by a series of holes and cement being connected
The porous material that slurry is constituted with the entity skeleton that aggregate is formed.But current eco-concrete is not high in the prevalence of intensity, thoroughly
It is aqueous can be unstable, the problems such as durability is poor, it is poor that these have led to current drainage channel slope stability, is easy to produce ditch
Road siltation, drainage efficiency are low.Therefore, this eco-concrete is very restricted in practical applications.Consider the steady of side slope
Determine problem, current gutter eco-concrete only considers intensity requirement when designing, and has ignored gutter eco-concrete
Drainage performance.
With the continuous improvement of economic level, the development of building trade is advanced by leaps and bounds, and concrete structure is used as using the most
One of extensive structure type, needs to consume a large amount of construction material every year.Currently used most of aggregates are all natural
Aggregate is usually dug out from riverbed, stone pit and seabed.If milli without end go down by exploitation in this way, to natural environment and money
Destruction caused by source can not make up.In recent years, in order to reduce the consumption of construction material, especially natural resources to environment
Influence, waste and byproduct be re-used as the most effective solution of the problem also obtained scholars concern and
Research.For natural aggregate, the substitute products usually considered mainly have recycled aggregate, cinder aggregate and steel slag aggregate etc..In addition to
Other than these, still there are some wastes and its byproduct that can be used to the natural aggregate in substitution concrete.With marine resources
The development continually developed with fishing industry, produce a large amount of shell and its byproduct.In these shells, in addition to small part obtains
It is processed into craftwork, the overwhelming majority is all abandoned as waste.The main component of shell is calcium carbonate, has centainly strong
Degree.Existing some scholars replace the coarse aggregate in concrete material using shell byproduct both at home and abroad, however correlative study and reality
Border is using fresh few.Based on the above points, the invention discloses a kind of cooperations of side slope deep layer gutter enhancement eco-concrete
Than.
Summary of the invention
The technical problem to be solved by the present invention is to have devised one kind for deficiency present in existing gutter technology
The structure type in side slope deep layer gutter, and disclose a kind of side slope deep layer gutter enhancement eco-concrete proportion.This
The technical solution that invention provides is:
A kind of side slope deep layer gutter structure, including parallel gutter 1, collect gutter 2, compacted clay plug 3 and side slope
4。
The parallel gutter is parallel to side slope direction along 1 and is evenly arranged;
The gutter 2 of collecting is connected with all parallel 1 least significant ends of gutter;
Side slope deep layer gutter structure is suitable for stablizing and had once been stabilized all rock matter at present by landslide
Or soil-slope.
For the side slope deep layer gutter, propose a kind of side slope deep layer gutter enhancement eco-concrete, composition and
Its mass fraction are as follows:
10~15 parts of cement, 5~15 parts of flyash, 45~70 parts of natural coarse aggregate, 5~30 parts of waste shell, nano-silicon
0.2~0.6 part of powder, 0~0.3 part of high efficiency water reducing agent, water-cement ratio is 0.22~0.28.
The cement is any in the ordinary portland cement, portland cement, aluminate cement of 32.5 labels or more
Or two or more mixing;
The flyash is I grade of flyash, II grade of flyash, any one in III grade of flyash, specific surface area >=
400m2/kg;
The natural coarse aggregate partial size is 5~25mm, and bulk density is 2.50~2.80g/cm3, water absorption rate 0.42%
~0.52%;
The waste shell partial size is 5~20mm, and bulk density is 2.70~2.80g/cm3, water absorption rate be 1.2%~
2.5%;
The nano silica fume partial size is 10~25nm, loss on ignition≤3% when pH value is 6.5~7.5,105 DEG C, dry shape
SiO under state2Content >=92%;
The high efficiency water reducing agent is any one of naphthalene system, melamine series, polycarboxylic acids efficiently etc. in water-reducing agents.
The present invention has technical advantage below:
(1) side slope deep layer provided by the present invention gutter structure type is simple, convenient construction.It can be applied to all steady
Determine or once occurred come down stable rock matter or soil-slope, it is applied widely.
(2) cement of coal ash instead a part is used in eco-concrete match ratio provided by the invention, not only significantly
Cost is saved, while flyash can improve the working performance of eco-concrete, increases the porosity of cement slurry, effectively improve
The permeability of eco-concrete;
(3) the nano silica fume particle used in eco-concrete match ratio provided by the invention is thin, and large specific surface area has
Very high pozzolanic properties, react that the gelled product hydrated calcium silicate to be formed is thinner, and microstructure is finer and close with cement.Meanwhile
Due to its thinner particle, nanometer silicon ash can improve the quality of cement slurry with the hole of filling concrete slurry, to improve
The intensity and durability of pervious concrete, is conducive to the stabilization of side slope;
(4) it is mixed with a large amount of waste shell in eco-concrete match ratio provided by the invention, for functionally,
Shell has higher water absorption rate, and drainage effect is more preferable.The streamflow regime for adding the pervious concrete of shell is more regular than anti-filter body,
It is not easy to take away in gutter substrate soil;From the aspect of practical value, natural aggregate is substituted using waste shell, not only becomes useless
For treasured, and it is convenient to draw materials, easy to process.A large amount of natural gravel is also saved simultaneously, is conducive to protection of resources, substantially reduces
Cost and traffic expense needed for raw material;
(5) side slope deep layer disclosed by the invention gutter eco-concrete, favorable working performance can guarantee high draining
Meet intensity requirement while performance, alleviate the problem of gutter siltation blocking significantly, drainage efficiency is high, has been connected to side slope soil
Body underground water and channel water body, enhance the self-purification capacity of channel water body, improve the permeable breathable of side slope soil, are side slope
Greening provides advantage.Materials are convenient, economic and environment-friendly.
Detailed description of the invention
Fig. 1 is side slope deep layer disclosed in this invention gutter structure overall schematic;
Fig. 2 is side slope deep layer disclosed in this invention gutter structure X-X ' diagrammatic cross-section;
Fig. 3 is side slope deep layer disclosed in this invention gutter structure F-F ' diagrammatic cross-section.
Specific embodiment:
The invention will be further described below.Following embodiment is only used for clearly illustrating technical side of the invention
Case, and not intended to limit the protection scope of the present invention.
Technical solution in order to enable those skilled in the art to better understand the present invention, is described in further detail.
(1) specific example selects following five kinds of match ratios, as shown in table 1, in laboratory to different match ratio systems
Sample test.
The match ratio of 1 eco-concrete of table
Cement | Flyash | Stone | Sand | Waste shell | Nano silica fume | High efficiency water reducing agent | Water | |
1 | 309.0 | 0 | 1161.8 | 72.6 | 290.5 | 0 | 4.8 | 92.7 |
2 | 309.0 | 0 | 1161.8 | 72.6 | 290.5 | 9.27 | 4.8 | 95.5 |
3 | 309.0 | 0 | 871.4 | 72.6 | 580.9 | 9.27 | 4.8 | 95.5 |
4 | 216.3 | 92.7 | 1161.8 | 72.6 | 290.5 | 9.27 | 4.8 | 95.5 |
5 | 154.5 | 154.5 | 1161.8 | 72.6 | 290.5 | 9.27 | 4.8 | 95.5 |
Cement uses 52.5 class g cement of conch, and the specific ingredient for the flyash selected in example is as shown in table 2 below.Stone
Particle size range is 5~15mm, and the partial size of waste shell is 4~10mm, and the average grain diameter of nano silica fume is 10~25nm, and pH value is
6.8 apparent density 0.10g/mL.High efficiency water reducing agent is high-efficiency water-reducing agent of poly-carboxylic acid.
2 fine coal ash composition of table
SiO2 | MgO | Fe2O3 | CaO | Al2O3 | Na2O | K2O | SO3 | |
Mass fraction | 36.4 | 2.55 | 22.4 | 17.5 | 14.1 | 0.231 | 2.09 | 1.04 |
(2) it according to listed match ratio in table 1, is stirred using forced action type dual horizontal shaft type concrete mixer.Claim first
The various components for taking corrresponding quality, are added in blender, and stirring mixes it uniformly in 25 seconds, and total water consumption is then added
50% is stirred for making mixture reach uniform moisture state in 35 seconds, and remaining water and water-reducing agent are finally mixed side stirring
Side is added, and final stage stirs 120 seconds or so.
(3) sample is carried out die-filling, the mold of every dress one third is high, is uniformly plugged and pounded 25 times with tamper, is finally placed on vibration
On dynamic platform, 5s is vibrated, scrapes flat surface with steel disc.All test specimens after shaping, are covered with the plastic film of the swiped through machine oil in surface immediately
It covers, prevents the aquation and strength development of moisture Influence of Evaporation cement.
(4) test specimen is placed on standard curing room maintenance to demould afterwards for 24 hours, then sprinkling maintenance.
(5) after test piece maintenance 7 days, the porosity of test specimen is measured, and using newly thinking carefully that pressure testing machine measures different cooperations
Than lower test specimen 7 days intensity as listed by table 4.
The porosity and 7 days intensity of 4 different mixture ratio test specimen of table
Proportion | Porosity/% | 7 days intensity/MPa |
1 | 31.5 | 19.98 |
2 | 30.8 | 21.39 |
3 | 30.1 | 24.06 |
4 | 32.8 | 22.83 |
5 | 34.3 | 22.20 |
Claims (11)
1. a kind of side slope deep layer gutter structure type, including parallel gutter, collect gutter, compacted clay plug and side slope.
2. side slope deep layer according to claim 1 gutter structure type, which is characterized in that the parallel gutter is along flat
Row is evenly arranged in side slope direction.
3. side slope deep layer according to claim 1 gutter structure type, which is characterized in that described to collect gutter and institute
There is parallel gutter least significant end to be connected.
4. side slope deep layer according to claim 1 gutter structure type, which is characterized in that the structure is suitable for stablizing
Landslide once occurred and has been stabilized all rock matter or soil-slope at present.
5. being directed to side slope deep layer gutter, a kind of side slope deep layer gutter enhancement eco-concrete is proposed, which is characterized in that
Composition and its mass fraction are as follows:
10 ~ 15 parts of cement, 5 ~ 15 parts of flyash, 45 ~ 70 parts of natural coarse aggregate, 5~30 parts of waste shell, nano silica fume 0.2 ~
0.6 part, 0 ~ 0.3 part of high efficiency water reducing agent, water-cement ratio is 0.22 ~ 0.28.
6. requiring the side slope deep layer gutter enhancement eco-concrete according to right 5, which is characterized in that the cement
For ordinary portland cements more than 32.5 labels, portland cement, mixing any one or more in aluminate cement.
7. requiring the side slope deep layer gutter enhancement eco-concrete according to right 5, which is characterized in that the fine coal
Any one grey in I grade of flyash, II grade of flyash, III grade of flyash, specific surface area >=400m2/kg。
8. side slope deep layer according to claim 5 gutter enhancement eco-concrete, which is characterized in that described natural
Coarse aggregate size is 3 ~ 15mm, and bulk density is 2.50 ~ 2.80g/cm3, water absorption rate is 0.42% ~ 0.52%.
9. side slope deep layer according to claim 5 gutter enhancement eco-concrete, which is characterized in that described discarded
Shell partial size is 2 ~ 10mm, and bulk density is 2.70 ~ 2.80g/cm3, water absorption rate is 2.0% ~ 2.5%.
10. side slope deep layer according to claim 5 gutter enhancement eco-concrete, which is characterized in that described to receive
Rice silicon powder partial size is 10 ~ 25nm, and pH value is 6.5 ~ 7.5,105oLoss on ignition≤3% when C, the SiO under drying regime2Content >=
92%。
11. side slope deep layer according to claim 5 gutter enhancement eco-concrete, which is characterized in that the height
Effect water-reducing agent is naphthalene system, melamine series, any one in high-efficiency water-reducing agent of poly-carboxylic acid.
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CN111777369A (en) * | 2020-06-15 | 2020-10-16 | 云南大永高速公路有限公司 | Concrete for maintaining stability of highway slope and preparation method thereof |
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