CN103362132A - Construction method of cast-in-site planting concrete revetment - Google Patents

Construction method of cast-in-site planting concrete revetment Download PDF

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CN103362132A
CN103362132A CN2013103199648A CN201310319964A CN103362132A CN 103362132 A CN103362132 A CN 103362132A CN 2013103199648 A CN2013103199648 A CN 2013103199648A CN 201310319964 A CN201310319964 A CN 201310319964A CN 103362132 A CN103362132 A CN 103362132A
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concrete
water
gridiron
aggregate
cast
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CN103362132B (en
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李火金
董发达
董金傍
刘文圣
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Six Queen Bee (shishi) Environmental Protection Building Materials Co Ltd
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Six Queen Bee (shishi) Environmental Protection Building Materials Co Ltd
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Abstract

The invention relates to the technical field of revetments and provides a construction method of a cast-in-site planting concrete revetment. The concrete revetment manufactured by utilizing the method has the advantages of high strength, good overall landscape effect, strong gradient adaptability, no water-body pollution, water erosion resistance, larger revetment self-weight, safety and reliability, and a water body can be effectively protected. The construction method comprises the following steps of 1, prefabricating acid nutrient soil; 2, arranging a side slope and pouring a concrete lattice frame; 3, pre-placing a nutrient layer; 4, laying inverted-filtering geotechnical cloth on the nutrient layer; 5, pouring planting concrete; 6 carrying out water-preserving, heat-preserving, fertilizer-preserving and alkalinity-reducing processing on the planting concrete; and 7, finally, uniformly spreading the seeds of greening grass and the nutrient soil onto the surface of the planting concrete to form a planting layer with the thickness of 1.8 to 2.2cm, and covering a non-woven fabric onto the surface of the planting layer for watering, moisture preservation and maintenance until the greening grass covers the whole green area.

Description

A kind of job practices of cast-in-place greening concrete protective slope
Technical field
The present invention relates to the slope protecting technique field, relate in particular to a kind of job practices of cast-in-place greening concrete protective slope, be used for greening and the protection of common river, road, slope project, be combined with the anchor bolt frame beam, and be used for the transformation of original rigid retaining walls formula embankment, 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, a large amount of excavations, embankment are often arranged, form a large amount of bare side slopings, bare side sloping has destroyed the ecological homeostasis of the Nature, brought a series of environmental problem, such as soil erosion, landslide, mud-rock flow, Partial little climate variation, biological chain destruction etc.Therefore, take engineering measure to protect and manually afforest and recover vegetation and ecological functions, reduce disaster, protection of the environment is very important.
Job practices commonly known in the art mainly contains at concrete revetment reserves the hole, for Turf Culture, because the hole on this concrete revetment is empty excessive, difficult forming, the concrete block rupture strength that is used for bank protection is lower, and serious breakage occurs goods easily, after the construction, whole landscape effect is bad, can not cover side slope.This kind goods profile is unfavorable for too greatly making, transports, installs in addition; The little then own wt of this kind block profile is not enough, and in not water-fast stream erosion in flood season, particularly grow on this concrete block has in the situation of plant, and plant and building block easily are pulled out during, immersion in water very fast at flow velocity, destroy stablizing of side slope.The concrete of other types adopts the mineral acid material to fall alkali too much, and the later stage concrete strength is destroyed seriously, easily causes water pollution.
Summary of the invention
Therefore; for above content; the invention provides a kind of job practices of cast-in-place greening concrete protective slope, utilize that the concrete revetment intensity that the method makes is high, whole landscape effect is good, to gradient strong adaptability, can effectively protect water body, polluted-water, bank protection deadweight are larger, safe and reliable.
For achieving the above object, the present invention is achieved by the following technical solutions: a kind of job practices of cast-in-place greening concrete protective slope may further comprise the steps:
1) prefabricated acidotrophy soil: stir into the powdery Nutrition Soil with water-loss reducer, kieselguhr, land plaster, Cosan, acid compound organic and inorganic fertilizer, the municipal sludge of mummification, clay, humus soil mixture after collecting organic organization's dry and pulverizing and pack for subsequent use;
2) arrangement side slope and concreting gridiron: plant, the stone riprap of removing the side slope surface, to side slope surface substantially smooth after-pouring concrete gridiron, side slope is separated into plural piece greening lattice, described concrete gridiron comprises outer gridiron and interior gridiron, is provided with the shrinkage joint between the outer gridiron of described concrete and the outer gridiron;
3) preset nutritive layer: the acidotrophy soil that the step 1) that paves in the greening lattice in the concrete gridiron makes, and evenly be sprinkling upon in the Nutrition Soil after will containing the material dilution of producing acid;
4) on greening lattice nutritive layer, spread the anti-filter geotextiles: adopt common 200~300 gram geotextiles;
5) build green concrete: the aggregate that adopts the single collection of 20~40mm to join, described aggregate and a certain proportion of polycarboxylic acids, cement are stirred, after aggregate is fully wrapped up by slurry, guaranteeing that aggregate surface can not flow is cast on the anti-filter geotextiles after the cementitious material, rake and use non-textile mulch after the compacting, the moisturizing of watering maintenance has obtained certain thickness green concrete;
6) water conservation of green concrete, insulation, fertilizer conservation and fall alkali treatment: the acidotrophy earth mixtures that will prepare is in advance poured among the green concrete space, guarantee to be filled with the Nutrition Soil mixture among the space, then water with the aqueous solution or other acidoids that add Microdilution acetic acid, allow organic organization's dry in the Nutrition Soil be fermented and decompose, and continue to produce humic acid;
7) will afforest at last careless seed and Nutrition Soil and evenly pave in the green concrete surface, forming thickness is the plantation layer of 1.8~2.2cm, and the moisturizing of again non-textile mulch being watered in a plantation layer surface is maintained, until the greening grass covers whole afforested areas.
Further improve and be: the organic organization's dry in the described step 1) is animals and plants, manure of livestock and poultry is fertile, the natural pond slag, in organic dries such as bacterium mushroom residue any one or two or more with any mixing than mixing, water-loss reducer in the described step 1) is humic acid agricultural water-loss reducer or polyacrylamide water-loss reducer, and the acid compound organic and inorganic fertilizer in the described step 1) is ferrous sulfate, aluminum sulfate, ammonium sulfate, ammonium nitrate, calcium superphosphate, potassium dihydrogen phosphate, in the potassium sulfate any one or two or more with any mixture than mixing and compoiste fertilizer with any mixture than mixing.
Further improve and be: the outer gridiron described step 2) adopts reinforced concreting, and outer gridiron cross-sectional area is not less than 20cm * 20cm, and interior gridiron cross-sectional area is not less than 12cm * 12cm.
Further improve and be: outer gridiron described step 2) is provided with reinforcing rib, and described concrete gridiron is provided with and prevents that gridiron is used for the anchor pole fixing with side slope what sliding force was subjected to displacement during greater than the side slope resistance.
Further improve and be: the toe frame place of described side slope is provided be used to the foundation structure that prevents that outer gridiron from sinking or floating, and described lower foundation structure is any one in barricade, stone riprap, the pile sinking.
Further improve and be: the acidoid in the described step 3) is biological bacteria or organic acid or both are with any mixture than mixing.
Further improve and be: the anti-filter geotextiles in the described step 4) can partly substitute or share with vegetable fibre net or auxotype geotextiles.
Further improve and be: the aggregate in the described step 5) is building castoff regeneration aggregate or natural shale aggregate, and described concrete underwater portion thickness is 10~16cm, and above water thickness is 6~12cm.
Further improve and be: aggregate and polycarboxylate water-reducer, low alkalinity cement are pressed water/binder ratio 0.26~28 in the described step 5), gelatine is than 5.5~6.7, the consumption of polycarboxylate water-reducer is 0.3~0.5% of cement weight, the solid content of described polycarboxylate water-reducer is greater than 20%, and the low alkalinity cement in the described step 5) is sulphate aluminium cement or the modified portland cement that adds more blast-furnace cinder, silica flour or anhydrous calcium sulphoaluminate.
Further improve and be: in the described step 5), guarantee that the aggregate surface cementitious material that can not flow is to add water conservancy project skill or mix rear drop sizing process and realize by secondary, described secondary adds the water conservancy project skill: Xian Jiashui makes aggregate suction moisture content, and then add cement, water fully stirs, substantially add again after being wrapped up by cement paste to aggregate and contain the polycarboxylic acids thinner, described drop sizing process is: after the cementitious material package aggregate, recycling is fallen unnecessary cement gel with drop pulp grinder tool and the drop of sieve aperture.
By adopting the aforementioned techniques scheme, the invention has the beneficial effects as follows: the present invention adopts segmentation to build frame, has both avoided the geology sedimentation to the destruction of gridiron, has alleviated again the gridiron mechanical load; Muscle is worn in employing or anchor rod anchored form will be combined into an integral body with protection system and the side slope that concrete frame and green concrete consist of, and has greatly increased both safeties; Green concrete adopts the monobloc cast form, forms continuous hole, and both favourable plant growth also was conducive to soil-water protection; Both kept high pore-forming effect, avoided again the deadweight of bank protection system not enough, the shortcoming that can't resist the current erosion, in the digestion various solid wastes, utilize simultaneously the characteristics of solid waste such as building waste, municipal sludge, crop residue etc. self, have complementary advantages by reasonably combined use, mutually learn from other's strong points to offset one's weaknesses, acid-base neutralization, accomplish moisture between each material, temperature, air, pH value, nutrition natural equilibrium, create and more to be conducive to environment and the space that plant growth, biology are perched.
Build before the green concrete, first organic organization's dry and water-loss reducer, kieselguhr, land plaster, Cosan, acid compound organic and inorganic fertilizer, the municipal sludge of mummification, clay, humus soil mixture are stirred into the powdery Nutrition Soil, Nutrition Soil entirely is layered in the concrete gridiron, produces sour material and make the organic organization's body in the Nutrition Soil slowly ferment, decompose by spraying acetic acid or other.Because concrete alkalescence is mainly reflected in the alkaline matter of can isolating out in the concrete hydrating reaction generative process, the high-quality concrete stable in properties behind the complete hydration reaction, itself does not affect the growing environment of plant.The alkaline matter that the hydration reaction process forms or be adsorbed on concrete surface, be dissolved in the curing water, be deposited in the bottom Nutrition Soil, so sulfate ion that the acidic materials that organic sweat produces in the Nutrition Soil or the land plaster in Nutrition Soil, Cosan hydrolysis form etc., can with the alkaline hydroxide ion reaction of isolating out in the concrete coagulation process, generate water, carbon dioxide and inorganic salts, finally reduce the pH value in Nutrition Soil and green concrete space.The organic Humus that forms afterwards in decomposition also can further change into the needed nutrient of animals and plants, forms nutritive layer, for animals and plants, microorganism existence provide necessary water, gas, nutrition foundation, PH environment.Adopt the biological mode preparation to fall the alkali Nutrition Soil, scientific and reasonable, safe and reliable.
The used shale of the present invention, pottery, glass fragment are the faller gill shape, after the cement gel bonding, become porosity to exceed spherical aggregate 20~30%; The building solid castoff regeneration aggregate is little than natural aggregate density, quality light and abundant hole is arranged; be conducive to retaining, gas storage; compare with natural aggregate concrete side slope; the heat by conduction coefficient is low; can obviously alleviate the high temperature damage of side slope, the plant that grows in concrete is had better protective effect.Thereby shale, potsherd and building solid castoff regeneration aggregate mixture suitable for producing green concrete more.
The nutrition geotextiles that the present invention is used is a kind of functional form non-woven geotextile of green concrete (concrete that can grow grass) revetment investigation of materials that is specially.But this non-woven geotextile uniform spreading is located under the green concrete plate, be compounded with the felt that one deck can slowly decompose the plant desired nutritional on the nonwoven top layer, in the anti-filter performance of basic maintenance non-woven geotextile, for the plant on the plant landscape band concrete provides long-term slow release fertilizer, solved because of limited space in the green concrete gap problem of slow release fertilizer deficiency in the filler that causes.
Description of drawings
Fig. 1 is the schematic flow sheet of job practices of the present invention;
Fig. 2 is the cross-sectional view of cast-in-place greening concrete protective slope among the present invention.
The specific embodiment
Describe embodiments of the present invention in detail below with reference to specific embodiment, how the application technology means solve technical problem to the present invention whereby, and the implementation procedure of reaching technique effect can fully understand and implements according to this.
If do not specialize, the conventional means that the technological means that adopts among the embodiment is well known to those skilled in the art, the reagent that adopts and product also are and can commercial obtain.The source of agents useful for same, trade name and be necessary to list its constituent person are all indicated when occurring first.
Embodiments of the invention are:
With reference to figure 1, a kind of job practices of cast-in-place greening concrete protective slope may further comprise the steps:
1) prefabricated acidotrophy soil: the crop residue such as husk, wheat bran or organic organization's body mixings chips such as vinasse, natural pond slag are got the municipal sludge of 4 weight portions and 4 weight portion polyacrylamide water-loss reducers (pulvis), 1 weight portion land plaster Cosan, 2.5 weight portion kieselguhr, 4.5 weight portion ammonium nitrate compound organic and inorganic fertilizers and 27 weight portion mummification and 57 weight portion humus soil mixtures mix the powdery Nutrition Soil and pack for subsequent use;
2) arrangement: (river, road, the engineering) side slope that will need to afforest is put in order, remove plants on surface, stone riprap, substantially smooth to the surface, must carry out compacting if any backfill, be in place below the water level season at abundance of water and should adopt first barricade or backfill stone riprap, piling etc. to carry out stability of foundation to process;
3) concreting gridiron on the side slope of putting in order: gridiron can arrange the shrinkage joint according to per 20~30 meters of physical features, the shrinkage joint is set in concavo-convex obvious location easily reduces geology destruction to the impact of gridiron, every section (take between two adjacent expansion seam as one section) the outer gridiron cross section of concrete gridiron is as 20 cm * 20cm, interior gridiron cross section is 12 cm *, 12 cm, and regularly be separated into the greening lattice of 1~9 squared magnitude, when flow velocity is spent greater than 45 greater than 3 metre per second (m/s)s or the gradient, the peripheral gridiron of concrete adopts the reinforcing rib structure design, and the green area should be divided into less green area; The concrete interior lattice frame adopts pervious concrete to build, pervious concrete gridiron cross section is not less than 15*15cm, should adopt boring in the gradient on greater than the soft side slope of 50 degree, precipitous rock slope body or river barricade, wear muscle, the mode of grouting or implantation anchor pole is combined the concrete gridiron with former domatic or barricade, prevent the gridiron displacement;
4) preset nutritive layer: build before the green concrete, first the powdery Nutrition Soil that makes in the step 1) entirely is layered in the greening lattice, thickness reaches 2.5cm, makes the organic organization's body in the Nutrition Soil slowly ferment, decompose by spraying acetic acid.The sulfuric acid that the acidic materials that organic sweat produces in the Nutrition Soil and the land plaster in Nutrition Soil, Cosan hydrolysis form, can with the alkaline hydroxide ion reaction of isolating out in the concrete coagulation process, generate water, carbon dioxide and inorganic salts, finally reduce the pH value in Nutrition Soil and green concrete space.The organic Humus that forms afterwards in decomposition also can further change into the needed nutrient of animals and plants, forms nutritive layer, for animals and plants, microorganism existence provide necessary water, gas, nutrition foundation, PH environment.Adopt the biological mode preparation to fall the alkali Nutrition Soil, scientific and reasonable, safe and reliable;
5) on nutritive layer, spread the anti-filter geotextiles: adopt common 300 gram nonwoven, the nutrition loss that prevents the side slope foundation soil or preset;
6) build green concrete: the shale that the single collection of preferred 20~40mm is joined, pottery, glass fragment and building solid castoff regeneration aggregate, above-mentioned aggregate and sulphate aluminium cement are pressed water/binder ratio 0.27, gelatine is than 6.67 mix and blends, then (solid content the is 20%) polycarboxylate water-reducer that adds sulphate aluminium cement consumption 0.5% stirs, after aggregate is fully wrapped up by slurry, guaranteeing that aggregate surface can not flow is cast in above the geotextiles of green area lattice after the cementitious material, rake after the compacting with the non-textile mulch moisturizing maintenance of watering, green concrete thickness is according to grade of side slope, flow velocity, the grid size is designed to 6~15cm;
7) green concrete is after after a while maintenance and reaching the design strength requirement, alkalescence in this moment concrete space thing of isolating reduces, the Nutrition Soil that step 1) is made is filled among the concrete space, carry out further water conservation, insulation, fertilizer conservation and fall alkali treatment: powdery Nutrition Soil filling is advanced among the green concrete space with the water that contains a small amount of acetic acid, guarantee to be filled with the Nutrition Soil material among the space, owing to contain water-loss reducer in the Nutrition Soil, land plaster, kieselguhr, ferrous sulfate, compoiste fertilizer, and the municipal sludge of mummification, in green concrete, has water conservation, insulation, fertilizer conservation and fall the alkali function has plant growth to change significantly and facilitation.Fall alkali this moment, can not produce inhibitory action to the green concrete hydration reaction because of hydrolysis sulfate ion in the Nutrition Soil, and then damage concrete strength, the larger seed of particle diameter this moment also can be mixed together sowing;
8) will afforest at last careless seed and Nutrition Soil and evenly pave in the green concrete surface, and form the plantation layer of 2cm, the moisturizing of again non-textile mulch being watered in a plantation layer surface is maintained, until the greening grass covers whole afforested areas.
Wherein, the gridiron cross section is not less than 12 cm *, 12 cm in described step 2); The THICKNESS CONTROL of Nutrition Soil is at 2~3cm in the described step 4), concrete thickness is 6~15cm in the described step 6), design according to grade of side slope, flow velocity, grid size, in above parameter area, all can realize purpose of the present invention, described sulphate aluminium cement is low alkalinity cement, can replace with the modified portland cement that adds more blast-furnace cinder, silica flour or anhydrous calcium sulphoaluminate, preferably sulphate aluminium cement.
With reference to figure 2, protective slope structure of the present invention comprises side slope basic unit 1, nutritive layer 2, geotextiles loaded filter 3, green concrete layer 4, plantation layer 5.
In the present embodiment, the concrete interior lattice frame adopts C20 without husky concrete, guarantees certain water permeability, its width, thickness are directly proportional with the height flow velocity of side slope, are not less than 10cm, are not more than 60cm, also can adopt reinforced structure to reduce concrete gridiron thickness, increase concrete flexural strength.
In the described step 4), described polyacrylamide water-loss reducer also can substitute with humic acid agricultural water-loss reducer; The consumption of described water-loss reducer at 3~5 weight portions, land plaster at 1~2 weight portion, kieselguhr at 2~3 weight portions, compoiste fertilizer at the municipal sludge of 3~6 weight portions, mummification at 25~30 weight portions, clay mixture at 50~60 weight portions, in above parameter area, all can realize purpose of the present invention.
The water/binder ratio of aggregate and polycarboxylate water-reducer, cement is 0.26~28 in the described step 6), gelatine is than 5.5~6.7, the consumption of polycarboxylate water-reducer is 0.3~0.5% of cement weight, and the solid content of described polycarboxylate water-reducer all can be realized purpose of the present invention greater than 20%.
No matter be concrete gridiron or green concrete among the present invention, the alkaline matter of in its hydration reaction generative process, all can isolating out.And high-quality concrete stable in properties, itself does not affect the growing environment of plant.Concrete hydrating reaction is more abundant, and the concrete quality is just better, and concrete surface is just more closely knit, thereby alkaline matter also just isolates fewlyer, and the outer alkalescence of concrete is just lower.The present invention adopts high-mark cement, share with polycarboxylate water-reducer, just can obtain with lower water/binder ratio having the concrete gelling slurry of better flowability, flowability has been created better condition for package aggregate preferably, has to a certain degree remedied the loss of strength of high porosity green concrete.The flowability that the while polycarboxylic acids brings had both been guaranteed sufficient hydration reaction, can reduce again the dissociating water molecule in the concrete, thereby reduce alkaline matter with the hydrone passage that leaks of isolating, reach the purpose that not only obtains high-quality concrete but also effectively reduce concrete alkalescence.
The alkaline matter that the hydration reaction process forms or be adsorbed on concrete surface, be dissolved in the curing water, be deposited in the bottom Nutrition Soil, so cause the basic unit's soil below green concrete or the green concrete to form calacareous soil, in calacareous soil, the validity of many trace elements such as boron, manganese, molybdenum, zinc, iron can reduce greatly, causes the plant nutrient deficiency.Thereby the acidity such as one or more organic acids of calcium superphosphate, ammonium sulfate, ammonium chloride, humic acid kind and physiological acidic fertilizer executed as base manure with organic fertilizer broadcast at calacareous soil, the stack retting certain hour, both can reduce and alleviate the harm of surface soil alkalinity, increase again the validity of organic trace element and inorganic acid salt fertilizer.
The used shale of the present invention, pottery, glass fragment are the faller gill shape, after the cement gel bonding, become porosity to exceed spherical aggregate 20~30%; The building solid castoff regeneration aggregate is little than natural aggregate density, quality light and abundant hole is arranged; be conducive to retaining, gas storage; compare with natural aggregate concrete side slope; the heat by conduction coefficient is low; can obviously alleviate the high temperature damage of side slope, the plant that grows in concrete is had better protective effect.Thereby shale, potsherd and building solid castoff regeneration aggregate mixture suitable for producing green concrete more.
The nutrition geotextiles that the present invention is used is a kind of functional form non-woven geotextile of green concrete (concrete that can grow grass) revetment investigation of materials that is specially.But this non-woven geotextile uniform spreading is located under the green concrete plate, be compounded with the felt that one deck can slowly decompose the plant desired nutritional on the nonwoven top layer, in the anti-filter performance of basic maintenance non-woven geotextile, for the plant on the plant landscape band concrete provides long-term slow release fertilizer, solved because of limited space in the green concrete gap problem of slow release fertilizer deficiency in the filler that causes.Vegetable fibre net or plant plait blanket mix use with inorganic geotextiles also can play slow decomposition plant desired nutritional, and the effect of long-term slow release fertilizer is provided for the plant on the greenbelt concrete.
The present invention needs to guarantee the aggregate surface cementitious material that can not flow in building the green concrete step, can adopt on the one hand secondary to add the water conservancy project skill, namely adding first water makes aggregate suction moisture, and then add quantitative cement, water fully stirs, substantially add again after being wrapped up by cement paste to aggregate and contain the polycarboxylic acids thinner, prevent mobile excessively, causing flows behind the solation piles up.Utilize on the other hand with the vibroplatform (can make by oneself) of sieve aperture but or such as the equipment reinforcing concrete of dewaterer and so on and the combination degree of aggregate, and take off unnecessary cementitious material, prevent that unnecessary cementitious material from stopping up hole in work progress, be deposited on bottom, be unfavorable for forming continuous hole, reduce the plant survival odds.
The string that flocculant in the dewatered sludge, animal vegetable tissue body form afterwards in decomposition, vegetable protein material etc. have good water retention property, and suitable polyacrylamide water-loss reducer or diatomaceous one or more water-keeping materials are full of in the concrete space, water retention is played in the capital, a large amount of suction retainings when moisture is abundant, discharge moisture content during arid and provide growth conditions for plant, and kieselguhr absorbs Macro and microelements or organic nutrient in water conservation, and the later stage can slowly release nutriment.
Municipal water mud mixture general pH value is between 5~6, be acid, be conducive to improve the alkaline environment in concrete space, and contain a large amount of dehydration polyacrylamide (being the Main Ingredients and Appearance of Sewage Plant flocculant) and organic matter, inorfil behind the urban water affairs sludge drying, these materials all are good water-keeping materials, organic fiber and inorfil interweave simultaneously, interact with root system of plant and geotextiles, can remedy because root system of plant gos deep into the loaded filter destruction that basal layer causes, produce multilayer anti-filter effect.Suitable addition 20-30% both can reduce the probability of concrete space dehydration, and the root system acting in conjunction with plant produces reverse filter effect again, is conducive to prevent erosion.
The used acetic acid main component of the present invention is acetic acid, contains the saturated carboxylic acid CH of two carbon atoms in the molecular acid 3COOH is the important containing oxygen derivative of hydrocarbon.The disassociation of acetic acid in the aqueous solution makes it have the sour corrosion ability.Promote string to resolve into organic matter on the one hand, for the animals and plants activity provides nutrition, on the other hand, the ion that forms behind the hydrogen that loses of its generation is that acetic acid anion can react with the hydroxide ion that the concrete setting process produces, generate water, carbon dioxide and inorganic salts, thus the alkaline environment of green area reduced.
The above record, only for utilizing the embodiment of this origination techniques content, modification, variation that any those skilled in the art use this creation to do all belong to the claim that this creation is advocated, and are not limited to those disclosed embodiments.

Claims (10)

1. the job practices of a cast-in-place greening concrete protective slope, it is characterized in that, may further comprise the steps: 1) prefabricated acidotrophy soil: stir into the powdery Nutrition Soil with water-loss reducer, kieselguhr, land plaster, Cosan, acid compound organic and inorganic fertilizer, the municipal sludge of mummification, clay, humus soil mixture after collecting organic organization's dry and pulverizing and pack for subsequent use;
2) arrangement side slope and concreting gridiron: plant, the stone riprap of removing the side slope surface, to side slope surface substantially smooth after-pouring concrete gridiron, side slope is separated into plural piece greening lattice, described concrete gridiron comprises outer gridiron and interior gridiron, is provided with the shrinkage joint between the outer gridiron of described concrete and the outer gridiron;
3) preset nutritive layer: the acidotrophy soil that the step 1) that paves in the greening lattice in the concrete gridiron makes, and evenly be sprinkling upon in the Nutrition Soil after will containing the material dilution of producing acid;
4) on greening lattice nutritive layer, spread the anti-filter geotextiles: adopt common 200~300 gram geotextiles; 5) build green concrete: the aggregate that adopts the single collection of 20~40mm to join, described aggregate and a certain proportion of polycarboxylic acids, low alkalinity cement are stirred, after aggregate is fully wrapped up by slurry, guaranteeing that aggregate surface can not flow is cast on the anti-filter geotextiles after the cementitious material, rake and use non-textile mulch after the compacting, the moisturizing of watering maintenance has obtained certain thickness green concrete; 6) water conservation of green concrete, insulation, fertilizer conservation and fall alkali treatment: the acidotrophy earth mixtures that will prepare is in advance poured among the green concrete space, guarantee to be filled with the Nutrition Soil mixture among the space, then water with the aqueous solution or other acidoids that add Microdilution acetic acid, allow organic organization's dry in the Nutrition Soil be fermented and decompose, and continue to produce humic acid;
7) will afforest at last careless seed and Nutrition Soil and evenly pave in the green concrete surface, forming thickness is the plantation layer of 1.8~2.2cm, and the moisturizing of again non-textile mulch being watered in a plantation layer surface is maintained, until the greening grass covers whole afforested areas.
2. the job practices of cast-in-place greening concrete protective slope according to claim 1, its feature is being: the organic organization's dry in the described step 1) is animals and plants, manure of livestock and poultry is fertile, the natural pond slag, in the organic dry of bacterium mushroom residue any one or two or more with any mixing than mixing, water-loss reducer in the described step 1) is humic acid agricultural water-loss reducer or polyacrylamide water-loss reducer, and the acid compound organic and inorganic fertilizer in the described step 1) is ferrous sulfate, aluminum sulfate, ammonium sulfate, ammonium nitrate, calcium superphosphate, potassium dihydrogen phosphate, in the potassium sulfate any one or two or more with any mixture than mixing and compoiste fertilizer with any mixture than mixing.
3. the job practices of cast-in-place greening concrete protective slope according to claim 1, it is characterized in that: the outer gridiron described step 2) adopts 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.
4. the job practices of cast-in-place greening concrete protective slope according to claim 1, it is characterized in that: outer gridiron described step 2) is provided with reinforcing rib, and described concrete gridiron is provided with and prevents that gridiron is used for the anchor pole fixing with side slope what sliding force was subjected to displacement during greater than the side slope resistance.
5. the job practices of cast-in-place greening concrete protective slope according to claim 4, it is characterized in that: the toe frame place of described side slope is provided be used to the foundation structure that prevents that outer gridiron from sinking or floating, and described lower foundation structure is any one in barricade, stone riprap, the pile sinking.
6. the job practices of cast-in-place greening concrete protective slope according to claim 1 is characterized in that: the acidoid in the described step 3) is biological bacteria or organic acid or both are with any mixture than mixing.
7. the job practices of cast-in-place greening concrete protective slope according to claim 1 is characterized in that: the anti-filter geotextiles in the described step 4) can partly substitute or share with vegetable fibre net or auxotype geotextiles.
8. the job practices of cast-in-place greening concrete protective slope according to claim 1, it is characterized in that: the aggregate in the described step 5) is building castoff regeneration aggregate or natural aggregate, described concrete underwater portion thickness is 10~16cm, and above water thickness is 6~12cm.
9. the job practices of cast-in-place greening concrete protective slope according to claim 1, it is characterized in that: aggregate and polycarboxylate water-reducer, low alkalinity cement are pressed water/binder ratio 0.26~28 in the described step 5), gelatine is than 5.5~6.7, the consumption of polycarboxylate water-reducer is 0.3~0.5% of cement weight, the solid content of described polycarboxylate water-reducer is greater than 20%, and the low alkalinity cement in the described step 5) is sulphate aluminium cement or the modified portland cement that adds more blast-furnace cinder, silica flour or anhydrous calcium sulphoaluminate.
10. the job practices of cast-in-place greening concrete protective slope according to claim 1, it is characterized in that: in the described step 5), guarantee that the aggregate surface cementitious material that can not flow is to add water conservancy project skill or mix rear drop sizing process and realize by secondary, described secondary adds the water conservancy project skill: Xian Jiashui makes aggregate suction moisture content, and then add cement, water fully stirs, substantially add again after being wrapped up by cement paste to aggregate and contain the polycarboxylic acids thinner, described drop sizing process is: after the cementitious material package aggregate, recycling is fallen unnecessary cement gel with drop pulp grinder tool and the drop of sieve aperture.
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