CN103362132B - A kind of construction method of cast-in-place greening concrete protective slope - Google Patents
A kind of construction method of cast-in-place greening concrete protective slope Download PDFInfo
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- CN103362132B CN103362132B CN201310319964.8A CN201310319964A CN103362132B CN 103362132 B CN103362132 B CN 103362132B CN 201310319964 A CN201310319964 A CN 201310319964A CN 103362132 B CN103362132 B CN 103362132B
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Abstract
The present invention relates to bulkhead tech field; the construction method of a kind of cast-in-place greening concrete protective slope is provided; utilize the method prepare concrete revetment intensity landscape effect high, overall good, to gradient strong adaptability, can effectively protect water body, not polluted-water, water-fast erosion, bank protection deadweight bigger, safe and reliable, comprise the following steps: 1) prefabricated acidotrophy soil；2) side slope casting concrete gridiron are arranged；3) preset nutritive layer；4) on nutritive layer, anti-filter geotextiles is spread；5) green concrete is poured；6) water conservation of green concrete, insulation, fertilizer conservation and fall alkali process；7) finally the seed of greening grass is uniformly paved in green concrete surface with Nutrition Soil, form the plantation layer that thickness is 1.8～about 2.2cm, then non-textile mulch is carried out, in plantation layer surface, moisturizing maintenance of watering, until greening grass covers whole afforested areas.
Description
Technical field
The present invention relates to bulkhead tech field, particularly relate to the construction method of a kind of cast-in-place greening concrete protective slope, be used for
Ordinary river, road, the greening of slope project and protection, be combined with Anchored frame beam, and for original rigid retaining walls formula dike
The transformation of bank, the greening of steep rock.
Background technology
Along with China's rapid development of economy, in the Process of Engineering Constructions such as highway, railway, water conservancy, mine, often have big
The excavation of amount, embankment, form substantial amounts of bare side sloping, and bare side sloping destroys the ecological balance of the Nature, brings a series of
Environmental problem, such as soil erosion, landslide, mud-rock flow, Partial little climate change, biological chain destruction etc..Therefore, engineering is taked to arrange
Executing and carry out protecting and manually afforesting recovering vegetation and ecological functions, reduce disaster, protection environment is very important.
Construction method commonly known in the art mainly has on concrete revetment reserved hole, for Turf Culture, by
The cavity in the hole on this concrete revetment is excessive, difficult forming, relatively low for the concrete segment rupture strength of bank protection,
Goods are susceptible to serious breakage, and after construction, overall landscape effect is bad, it is impossible to cover side slope.Additionally this kind of goods profile
It is unfavorable for the most greatly manufacturing, transports, installs；This kind of little then own wt of block profile is not enough, is weak to current erosion in flood season, especially
Being in the case of on this concrete segment, growth has plant, during, immersion in water very fast at flow velocity, plant and building block are easily pulled out,
Destroy stablizing of side slope.Other kinds of concrete uses mineral acid material to drop alkali too much, breaks later stage concrete strength
Bad serious, easily cause water pollution.
Summary of the invention
Therefore, for above content, the present invention provides the construction method of a kind of cast-in-place greening concrete protective slope, utilizes the party
The concrete revetment intensity landscape effect high, overall that method prepares is good, to gradient strong adaptability, can effectively protect water body, the most dirty
Dye water body, bank protection are conducted oneself with dignity bigger, safe and reliable.
For reaching above-mentioned purpose, the present invention is achieved by the following technical solutions: a kind of cast-in-place greening concrete protective slope
Construction method, comprise the following steps:
1) prefabricated acidotrophy soil: with water-retaining agent, kieselguhr, Gypsum Fibrosum powder, sulfur after the dry pulverizing of collection organic organization
Powder, acid compound organic and inorganic fertilizer, the municipal sludge of mummification, clay, fertile soil mixture stir into powdered nutritional soil and pack standby
With；
2) side slope casting concrete gridiron are arranged: remove the plant on side slope surface, stone riprap, substantially smooth to side slope surface
After-pouring concrete gridiron, is separated into plural number block greening lattice by side slope, and described concrete gridiron includes outer gridiron and interior gridiron, institute
State and be provided with expansion joint between gridiron and outer gridiron outside concrete；
3) preset nutritive layer: afforest the acidotrophy soil that the step 1) that paves in lattice prepares in concrete gridiron, and will contain
The material producing acid is had uniformly to be sprinkling upon in Nutrition Soil after diluting；
4) on greening lattice nutritive layer, anti-filter geotextiles is spread: use common 200～300 grams of geotextiles；
5) green concrete is poured: use the aggregate that 20～40mm single collection are joined, described aggregate is poly-with a certain proportion of
Carboxylic acid, cement are stirred, after making aggregate fully be wrapped up by slurry, it is ensured that aggregate surface is without the after-pouring of flowable Binder Materials
In anti-filter geotextiles, with non-textile mulch after compacting of raking, moisturizing of watering is maintained, is obtained there is certain thickness greening coagulation
Soil；
6) water conservation of green concrete, insulation, fertilizer conservation and fall alkali process: fallen by the acidotrophy earth mixtures prepared in advance
Enter among green concrete space, it is ensured that be filled with Nutrition Soil mixture among space, then with adding Microdilution acetic acid
Aqueous solution or other acidoids water, and allow the organic organization's dry in Nutrition Soil be fermented and to decompose, and continue
Produce humic acid；
7) finally seed and the Nutrition Soil of greening grass are uniformly paved in green concrete surface, formed thickness be 1.8～
The plantation layer of 2.2cm, then non-textile mulch is carried out, in plantation layer surface, moisturizing maintenance of watering, until greening grass covers whole green
Change region.
Further improve and be: the organic organization's dry in described step 1) is animals and plants, poultry muck, biogas residue, bacterium
In the organic dry matter such as mushroom residue any one or two or more with any than mixing mixing, the guarantor in described step 1)
Water preparation is humic acids agricultural water-retaining agent or polyacrylamide water-retaining agent, and the acid compound organic and inorganic fertilizer in described step 1) is sulfur
Acid ferrous iron, aluminum sulfate, ammonium sulfate, ammonium nitrate, calcium superphosphate, potassium dihydrogen phosphate, potassium sulfate in any one or two or more
With any mixture mixed with any ratio with compoiste fertilizer than the mixture of mixing.
Further improve and be: described step 2) in outer gridiron use reinforced concreting, outer gridiron cross section
Amassing and be not less than 20cm * 20cm, interior gridiron cross-sectional area is not less than 12cm * 12cm.
Further improve and be: described step 2) outer gridiron be provided with reinforcement, described concrete gridiron is provided with and prevents
Gridiron be subjected to displacement when sliding force is more than side slope resistance for the anchor pole fixing with side slope.
Further improve and be: at the toe frame of described side slope, be provided with the basis knot for preventing outer gridiron from sinking or to float
Structure, described lower base structure is any one in barricade, stone riprap, pile sinking.
Further improve and be: the acidoid in described step 3) be biological bacteria or organic acid or both with any than mixed
The mixture closed.
Further improve and be: the anti-filter geotextiles in described step 4) can be with vegetable fibre net or auxotype geotextiles portion
Divide and substitute or share.
Further improve and be: the aggregate in described step 5) is building castoff regeneration aggregate or natural shale aggregate,
Described concrete water lower part thickness is 10～16cm, and above water thickness is 6～12cm.
Further improve and be: in described step 5), aggregate and polycarboxylate water-reducer, low alkalinity cement are by the ratio of mud 0.26
～28, osseocolla ratio 5.5～6.7, the consumption of polycarboxylate water-reducer is the 0.3～0.5% of cement weight, described polycarboxylate water-reducer
Solid content more than 20%, the low alkalinity cement in described step 5) is sulphate aluminium cement or adds more blast-furnace cinder, silica flour
Or the modified portland cement of anhydrous calcium sulphoaluminate.
Further improve and be: in described step 5), it is ensured that aggregate surface is to be added by secondary without flowable Binder Materials
Water conservancy project skill or drip sizing process after mixing and realize, the described secondary technique that adds water is: first adds water and makes aggregate suction moisture content, then adds
Cement, water are sufficiently stirred for, and add containing polycarboxylic acids diluent, described drip sizing process after substantially being wrapped up by cement mortar to aggregate
For: after Binder Materials package aggregate, unnecessary cement gel is fallen in drip pulp grinder tool the drip of recycling band sieve aperture.
By using preceding solution, the invention has the beneficial effects as follows: the present invention uses segmentation to build frame, both avoided geology
The sedimentation destruction to gridiron, alleviates again gridiron mechanical load；Muscle is worn in employing or anchor rod anchored form will be with concrete frame
The protection system constituted with green concrete and side slope are combined into an entirety, considerably increase both safeties；Greening is mixed
Solidifying soil uses one-piece casting form, forms continuous hole, and both favourable plant growing, was also beneficial to soil-water protection；Both retained high
Pore-forming effect, turn avoid bank protection system deadweight deficiency, it is impossible to the shortcoming of water resistant stream erosion, discards at digestion many kinds of solids simultaneously
The feature of solid waste such as building waste, municipal sludge, crop residue etc. self is utilized, by rationally taking while thing
Join use to have complementary advantages, mutually learn from other's strong points to offset one's weaknesses, acid-base neutralization, accomplish moisture, temperature, air, pH value, nutrition between each material
Balance of nature, creates and is more beneficial for plant growing, environment that biology is perched and space.
Before pouring green concrete, first by organic organization's dry and water-retaining agent, kieselguhr, Gypsum Fibrosum powder, Cosan, acid
Property compound organic and inorganic fertilizer, the municipal sludge of mummification, clay, fertile soil mixture stir into powdered nutritional soil, Nutrition Soil is put down
It is layered in concrete gridiron wholely, produces acid material make the organic organization's body in Nutrition Soil slowly send out by spraying acetic acid or other
Ferment, decomposition.Owing to concrete alkalescence is mainly reflected in during concrete hydrating reaction generates alkaline matter of can isolating out, completely
High-quality concrete properties after hydration reaction is stable, itself does not affect the growing environment of plant.Hydration reaction process is formed
Alkaline matter or absorption are on the surface of concrete, or are dissolved in curing water, are deposited in bottom Nutrition Soil, so nutrition
The sulfate radical that the acidic materials that in soil, organic sweat produces or the Gypsum Fibrosum powder in Nutrition Soil, Cosan hydrolyze to form from
Sons etc., can reacts with the alkaline hydroxide ion isolating out during concrete coagulation, generation water, carbon dioxide and inorganic
Salt, the final pH value reducing Nutrition Soil and green concrete space.The organic Humus formed after disassembly also can be further
Change into the nutrient required for animals and plants, form nutritive layer, provide the water of necessity, gas, Nutrient medium for animals and plants, microbe survival
Plinth, PH environment.Use biological mode preparation fall alkali Nutrition Soil, scientific and reasonable, safe and reliable.
Used by the present invention, shale, pottery, glass fragment are faller gill shape, after cement gel bonds, become porosity to exceed spherical
Aggregate 20～30%；Building solid castoff regeneration aggregate is little compared with natural aggregate density, light weight and have abundant hole, have
It is beneficial to water-retention, gas storage, compared with natural aggregate concrete side slope, passes heat conductivity low, can substantially alleviate the high temperature damage of side slope,
Growth promoter plant in concrete there is more preferable protective effect.Thus shale, potsherd and building solid castoff
Regeneration aggregate mixture more suitable for producing green concrete.
Nutrition geotextiles used by the present invention, is a kind of exclusively for green concrete (concrete that can grow grass) revetment material
The functional type non-woven geotextile of research.This non-woven geotextile can be located under green concrete plate, at non-woven fabrics table by uniform spreading
Layer is compounded with one layer of felt that can slowly decompose plant desired nutritional, same in the basic anti-filter performance keeping non-woven geotextile
Time, provide long-term sustained release fertilizer for the plant on plant landscape band concrete, solve because in green concrete gap there being space
Limit, the problem that in the filler caused, slow release fertilizer is not enough.
Accompanying drawing explanation
Fig. 1 is the schematic flow sheet of the construction method of the present invention；
Fig. 2 is the cross-sectional view of cast-in-place greening concrete protective slope in the present invention.
Detailed description of the invention
Describe embodiments of the present invention in detail below with reference to specific embodiment, whereby how the present invention is applied skill
Art means solve technical problem, and the process that realizes reaching technique effect can fully understand and implement according to this.
If not specializing, the conventional hands that the technological means employed in embodiment is well known to those skilled in the art
Section, the reagent used and product are also available commercial.The source of agents useful for same, trade name and be necessary to list it
Constituent person, all indicates when occurring first.
Embodiments of the invention are:
With reference to Fig. 1, the construction method of a kind of cast-in-place greening concrete protective slope, comprise the following steps:
1) prefabricated acidotrophy soil: by the crop residue such as rice husk, wheat bran or the body mixing of the organic organization such as distiller grains, biogas residue
Chip takes 4 weight portions and 4 parts by weight of polypropylene amide water-retaining agent (powder), 1 weight portion Gypsum Fibrosum powder Cosan, 2.5 weight portion silicon
Diatomaceous earth, 4.5 parts by weight of ammonium nitrate compound organic and inorganic fertilizers and the municipal sludge of 27 weight portion mummification and 57 weight portion fertile soil
It is standby that mixture mixes the pack of powdered nutritional soil；
2) arrange: (river, road, the engineering) side slope needing greening is arranged, remove plants on surface, stone riprap, extremely
Surface is substantially smooth, must be compacted if any backfill soil, abundance of water be in season the place of below water level should first use barricade or
Backfill stone riprap, piling etc. carry out stability of foundation process；
3) casting concrete gridiron in the side slope put in order: gridiron can arrange expansion joint according to every 20～30 meters of physical features,
Arranging expansion joint in concavo-convex obvious location and easily reduce the impact on gridiron of the geology destruction, every section (between two adjacent expansion seams
It being one section) the outer gridiron cross section of concrete gridiron is 20 cm * 20cm, interior gridiron cross section is 12 cm * 12 cm, and regular
Be separated into the greening lattice of 1～9 squared magnitude, when flow velocity more than 3 metre per second (m/s)s or the gradient more than 45 degree time, concrete periphery gridiron
Employing reinforcing rib structure designs, and green belt should be divided into less green belt；Concrete interior lattice frame uses pervious concrete to carry out
Pouring, pervious concrete gridiron cross section is not less than 15*15cm, in the gradient more than 50 degree of soft side slopes, precipitous rock slope bodies
Or boring should be used on river barricade, wear muscle, be in the milk or implant the mode of anchor pole by concrete gridiron and former domatic or barricade knot
Close, prevent gridiron displacement；
4) preset nutritive layer: before pouring green concrete, the powdered nutritional smooth shakedown of soil that first will prepare in step 1)
In greening lattice, thickness reaches 2.5cm, makes the organic organization's body in Nutrition Soil slowly ferment, decompose by spraying acetic acid.Nutrition Soil
The sulphuric acid that the acidic materials that middle organic sweat produces and the Gypsum Fibrosum powder in Nutrition Soil, Cosan hydrolyze to form, meeting
React with the alkaline hydroxide ion isolating out during concrete coagulation, generate water, carbon dioxide and inorganic salt, final decline
Low nutrition soil and the pH value in green concrete space.The organic Humus formed after disassembly also can be further converted into dynamic planting
Nutrient required for thing, forms nutritive layer, provides the water of necessity, gas, Basal nutrition, PH environment for animals and plants, microbe survival.
Use biological mode preparation fall alkali Nutrition Soil, scientific and reasonable, safe and reliable；
5) on nutritive layer, anti-filter geotextiles is spread: use common 300 grams of non-woven fabrics, prevent side slope foundation soil or preset
Nutrition run off；
6) green concrete is poured: shale, pottery, glass fragment and the building solid that preferably 20～40mm single collection are joined gives up
Gurry regeneration aggregate, presses the ratio of mud 0.27 by above-mentioned aggregate and sulphate aluminium cement, and osseocolla, than 6.67 mix and blends, then adds
(solid content is 20%) polycarboxylate water-reducer of sulphate aluminium cement consumption 0.5% is stirred, is fully wrapped up by slurry at aggregate
After, it is ensured that aggregate surface, without being cast in after flowable Binder Materials above the geotextiles of green belt lattice, uses nothing after compacting of raking
Spin cloth and cover moisturizing maintenance of watering, green concrete thickness according to grade of side slope, flow velocity, grid size be designed be 6～
15cm；
7) green concrete is after maintenance after a while reaching design strength requirement, the now alkali in concrete space
Property thing of isolating reduce, Nutrition Soil step 1) prepared is filled among concrete voids, carries out further water conservation, is incubated, protects
Fertile and fall alkali processes: enter among green concrete space with the water containing a small amount of acetic acid by powdered nutritional soil filling, it is ensured that space
Among be filled with Nutrition Soil material, due in Nutrition Soil containing water-retaining agent, Gypsum Fibrosum powder, kieselguhr, ferrous sulfate, organic composite
Fertilizer, and the municipal sludge of mummification, have water conservation, insulation, fertilizer conservation and fall alkali function in green concrete, have plant growing
Change significantly and facilitation.Now carry out dropping alkali, will not be because of Nutrition Soil hydrolyzing sulfate ion to green concrete
Hydration reaction produces inhibitory action, and then damages concrete strength, the seed that now particle diameter is bigger, also can be mixed together sowing；
8) finally the seed of greening grass is uniformly paved in green concrete surface with Nutrition Soil, forms the plantation layer of 2cm,
Again non-textile mulch is carried out, in plantation layer surface, moisturizing maintenance of watering, until greening grass covers whole afforested areas.
Wherein, described step 2) in gridiron cross section be not less than 12 cm * 12 cm；The thickness of described step 4) Middle nutrition soil
Degree controls 2～3cm, and in described step 6), concrete thickness is 6～15cm, carries out according to grade of side slope, flow velocity, grid size
Design, all can realize the purpose of the present invention in above parameter area, and described sulphate aluminium cement is low alkalinity cement, Ke Yiyong
The modified portland cement adding more blast-furnace cinder, silica flour or anhydrous calcium sulphoaluminate replaces, preferably aluminium sulfate
Cement.
With reference to Fig. 2, the protective slope structure of the present invention includes side slope basic unit 1, nutritive layer 2, geotextiles loaded filter 3, afforests coagulation
Soil layer 4, plants layer 5.
In the present embodiment, concrete interior lattice frame uses C20 without husky concrete, it is ensured that certain water penetration, its width, thickness
It is directly proportional to the height flow velocity of side slope, not less than 10cm, no more than 60cm, reinforced structure also can be used to reduce concrete gridiron thick
Degree, increases concrete flexural strength.
In described step 4), described polyacrylamide water-retaining agent can also substitute with humic acids agricultural water-retaining agent；Described guarantor
The consumption of water preparation at 3～5 weight portions, Gypsum Fibrosum powder at 1～2 weight portions, kieselguhr at 2～3 weight portions, compoiste fertilizer 3～6
Weight portion, mummification municipal sludge at 25～30 weight portions, clay mixture at 50～60 weight portions, in above parameter area
All can realize the purpose of the present invention.
Aggregate and polycarboxylate water-reducer in described step 6), cement the ratio of mud 0.26～28, osseocolla ratio 5.5～6.7,
The consumption of polycarboxylate water-reducer is the 0.3～0.5% of cement weight, and the solid content of described polycarboxylate water-reducer all can be real more than 20%
The existing purpose of the present invention.
Either concrete gridiron or green concrete in the present invention, all can isolate during its hydration reaction generates
Go out alkaline matter.And high-quality concrete properties is stable, itself do not affect the growing environment of plant.Concrete hydrating reaction is more filled
Point, concrete quality is the best, and concrete surface is the most closely knit, thus alkaline matter is the most just isolated the fewest, the outer alkali of concrete
Property is the lowest.The present invention uses high-mark cement, shares with polycarboxylate water-reducer, it is possible to had with the relatively low ratio of mud
The preferably concrete gelling slurry of mobility, preferable mobility is that package aggregate creates more preferable condition, the most more
Mend the loss of strength of high porosity green concrete.The mobility that polycarboxylic acids brings simultaneously both ensure that sufficient aquation was anti-
Should, can reduce again the dissociating water molecule in concrete, thus reduce alkaline matter and isolate the passage that leaks with hydrone, both reach
The purpose of concrete alkalescence is the most effectively reduced to high-quality concrete.
The alkaline matter of hydration reaction process formation or absorption are on the surface of concrete, or are dissolved in curing water,
It is deposited in bottom Nutrition Soil, so causing the basic unit's Zinc fractions terra calcis below green concrete or green concrete
Earth, in calacareous soil, many trace element such as boron, manganese, molybdenum, zinc, the effectiveness of ferrum can be substantially reduced, and cause plant nutrient unit
Element is not enough.Thus by calcium superphosphate, ammonium sulfate, ammonium chloride, humic acid kind one or more organic acid etc. are acid and physiology acid
Property fertilizer and organic fertilizer execute together as base manure and broadcast at calacareous soil, compost certain time, both can reduce and alleviate soil
The harm of alkalescence, increases again organic trace element and the effectiveness of inorganic acid salt fertilizer.
Used by the present invention, shale, pottery, glass fragment are faller gill shape, after cement gel bonds, become porosity to exceed spherical
Aggregate 20～30%；Building solid castoff regeneration aggregate is little compared with natural aggregate density, light weight and have abundant hole, have
It is beneficial to water-retention, gas storage, compared with natural aggregate concrete side slope, passes heat conductivity low, can substantially alleviate the high temperature damage of side slope,
Growth promoter plant in concrete there is more preferable protective effect.Thus shale, potsherd and building solid castoff
Regeneration aggregate mixture more suitable for producing green concrete.
Nutrition geotextiles used by the present invention, is a kind of exclusively for green concrete (concrete that can grow grass) revetment material
The functional type non-woven geotextile of research.This non-woven geotextile can be located under green concrete plate, at non-woven fabrics table by uniform spreading
Layer is compounded with one layer of felt that can slowly decompose plant desired nutritional, same in the basic anti-filter performance keeping non-woven geotextile
Time, provide long-term sustained release fertilizer for the plant on plant landscape band concrete, solve because in green concrete gap there being space
Limit, the problem that in the filler caused, slow release fertilizer is not enough.Vegetable fibre net or plant plait blanket mix with inorganic geotextiles
Use may also function as slowly decomposing plant desired nutritional, provides the work of long-term sustained release fertilizer for the plant on greenbelt concrete
With.
The present invention is necessary to ensure that in pouring green concrete step aggregate surface, on the one hand can without flowable Binder Materials
Use secondary to add water technique, the most first add water and make aggregate suction moisture, then add quantitative cement, water is sufficiently stirred for,
Substantially add after being wrapped up by cement mortar to aggregate containing polycarboxylic acids diluent, prevent mobility excessive, flow after causing solation
Dynamic accumulation.On the other hand the vibration table (can make by oneself) or the equipment such as dewaterer etc that utilize band sieve aperture can reinforcing concrete and bones
The combination degree of material, and take off unnecessary Binder Materials, prevent unnecessary Binder Materials from blocking hole in work progress, deposition
In bottom, it is unfavorable for being formed continuous hole, reduces plant survival odds.
Plant fiber that flocculant in dewatered sludge, animal vegetable tissue body are formed after disassembly, vegetable protein material etc.
There is good water retention property, and suitable polyacrylamide water-retaining agent or one or more water-keeping materials diatomaceous are full of
In concrete voids, all can play water retention, absorb water when moisture is abundant water-retention in a large number, and discharging moisture content during arid is that plant carries
For growth conditions, and kieselguhr absorbs Macro and microelements or organic nutrient while water conservation, and the later stage can slowly release battalion
Support material.
The general pH value of municipal water mud mixture is between 5～6, in acidity, is conducive to improving the alkalescence in concrete space
Environment, and containing substantial amounts of dehydration polyacrylamide (i.e. the Main Ingredients and Appearance of Sewage Plant flocculant) after urban water affairs sludge drying
With organic, inorfil, these materials are all that excellent water-keeping material, simultaneously organic fiber and inorfil interweave, and plant
Thing root system and geotextiles interact, and can make up because root system of plant gos deep into the loaded filter destruction that basal layer causes, produce multilamellar
Anti-filter effect.Suitable addition 20-30% both can reduce the probability of concrete voids dehydration, common with the root system of plant again
Effect produces reverse filter effect, desirably prevents soil erosion.
Acetic acid main component used by the present invention is acetic acid, contains the saturated carboxylic acid of two carbon atoms in molecular acid
CH3COOH, is the important containing oxygen derivative of hydrocarbon.Acetic acid dissociation in aqueous makes it have sour corrosion ability.On the one hand
Promoting that Plant fiber resolves into organic matter, provide nutrition for animals and plants activity, on the other hand, what it produced lose is formed after hydrogen
Ion is that acetic acid anion can react with the hydroxide ion that concrete setting process produces, and generates water, carbon dioxide and nothing
Machine salt, thus reduce the alkaline environment of green belt.
Described above, only utilize the embodiment of this origination techniques content, any those skilled in the art to use this wound
Make modification, the change done, all belong to the scope of the claims that this creation is advocated, and be not limited to those disclosed embodiments.
Claims (10)
1. the construction method of a cast-in-place greening concrete protective slope, it is characterised in that comprise the following steps:
1) prefabricated acidotrophy soil: with water-retaining agent, kieselguhr, Gypsum Fibrosum powder, Cosan, acid after the dry pulverizing of collection organic organization
Property compound organic and inorganic fertilizer, the municipal sludge of mummification, that clay, fertile soil mixture stir into the pack of powdered nutritional soil is standby；
2) arrange side slope casting concrete gridiron: remove the plant on side slope surface, stone riprap, mix to side slope surfacing after-pouring
Solidifying soil gridiron, is separated into plural number block greening lattice by side slope, and described concrete gridiron includes outer gridiron and interior gridiron, described concrete
It is provided with expansion joint between outer gridiron and outer gridiron；
3) preset nutritive layer: afforest the acidotrophy soil that the step 1) that paves in lattice prepares in concrete gridiron, and will be containing producing
Uniformly it is sprinkling upon in acidotrophy soil after the material dilution of acid；
4) on greening lattice nutritive layer, anti-filter geotextiles is spread: use common 200～300 grams of geotextiles；
5) pour green concrete: use the aggregate joined of 20～40mm single collection, by described aggregate and a certain proportion of polycarboxylic acids,
Low alkalinity cement is stirred, after making aggregate fully be wrapped up by slurry, it is ensured that aggregate surface is without watering after flowable Binder Materials
Building in anti-filter geotextiles, with non-textile mulch after compacting of raking, moisturizing of watering is maintained, is obtained there is certain thickness greening coagulation
Soil；
6) water conservation of green concrete, insulation, fertilizer conservation and fall alkali process: pour the acidotrophy soil prepared in advance into greening coagulation
Soil space among, it is ensured that be filled with among space acidotrophy soil, then with add Microdilution vinegar aqueous acid or other
Acidoid waters, and allows the organic organization's dry in acidotrophy soil be fermented and to decompose, and persistently produces humic
Acid；
7) finally seed and the acidotrophy soil of greening grass are uniformly paved in green concrete surface, formed thickness be 1.8～
The plantation layer of 2.2cm, then non-textile mulch is carried out, in plantation layer surface, moisturizing maintenance of watering, until greening grass covers whole green
Change region.
The construction method of cast-in-place greening concrete protective slope the most according to claim 1, its feature is being: described step 1)
In organic organization's dry be in animals and plants, poultry muck, biogas residue, mushroom residue organic dry matter any one or two
With any mixture than mixing more than kind, the water-retaining agent in described step 1) is humic acids agricultural water-retaining agent or polyacrylamide
Water-retaining agent, the acid compound organic and inorganic fertilizer in described step 1) is ferrous sulfate, aluminum sulfate, ammonium sulfate, ammonium nitrate, peroxophosphoric acid
In calcium, potassium dihydrogen phosphate, potassium sulfate any one or two or more with any mixture and compoiste fertilizer than mixing with
Arbitrarily than the mixture of mixing.
The construction method of cast-in-place greening concrete protective slope the most according to claim 1, it is characterised in that: described step 2) in
Outer gridiron use reinforced concreting, outer gridiron cross-sectional area is not less than 20cm * 20cm, and interior gridiron cross-sectional area is not
Less than 12cm * 12cm.
The construction method of cast-in-place greening concrete protective slope the most according to claim 1, it is characterised in that: described step 2)
Outer gridiron is provided with reinforcement, and described concrete gridiron is provided with and prevents gridiron to be subjected to displacement when sliding force is more than side slope resistance
For the anchor pole fixing with side slope.
The construction method of cast-in-place greening concrete protective slope the most according to claim 4, it is characterised in that: the slope of described side slope
Being provided with the base structure for preventing outer gridiron from sinking or floating at foot frame, described base structure is in barricade, stone riprap, pile sinking
Any one.
The construction method of cast-in-place greening concrete protective slope the most according to claim 1, it is characterised in that: in described step 3)
Acidoid be biological bacteria or organic acid or both with any than mixing mixture.
The construction method of cast-in-place greening concrete protective slope the most according to claim 1, it is characterised in that: in described step 4)
Anti-filter geotextiles vegetable fibre net or auxotype geotextiles part substitute.
The construction method of cast-in-place greening concrete protective slope the most according to claim 1, it is characterised in that: in described step 5)
Aggregate be building castoff regeneration aggregate or natural aggregate, described concrete water lower part thickness is 10～16cm, portion waterborne
Dividing thickness is 6～12cm.
The construction method of cast-in-place greening concrete protective slope the most according to claim 1, it is characterised in that: in described step 5)
Aggregate and polycarboxylate water-reducer, the ratio of mud 0.26～28 of low alkalinity cement, osseocolla ratio 5.5～6.7, the use of polycarboxylate water-reducer
Amount is the 0.3～0.5% of cement weight, and the solid content of described polycarboxylate water-reducer is more than 20%, the low alkalinity in described step 5)
Cement is sulphate aluminium cement or the modified portland cement adding more blast-furnace cinder, silica flour or anhydrous calcium sulphoaluminate.
The construction method of cast-in-place greening concrete protective slope the most according to claim 1, it is characterised in that: described step 5)
In, it is ensured that aggregate surface is to be added water technique or drip sizing process after mixing and realize by secondary without flowable Binder Materials, described two
The secondary technique that adds water is: first adds water and makes aggregate suction moisture content, then adds cement, water is sufficiently stirred for, to aggregate by cement
Adding containing polycarboxylic acids diluent after slurry parcel, described drip sizing process is: after Binder Materials package aggregate, recycling band sieve
Unnecessary cement gel is fallen in drip pulp grinder tool the drip in hole.
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