CN109987916A - A kind of degradable phosphate cement base aggregate and preparation method thereof with efficiency slow release performance - Google Patents
A kind of degradable phosphate cement base aggregate and preparation method thereof with efficiency slow release performance Download PDFInfo
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- CN109987916A CN109987916A CN201910281770.0A CN201910281770A CN109987916A CN 109987916 A CN109987916 A CN 109987916A CN 201910281770 A CN201910281770 A CN 201910281770A CN 109987916 A CN109987916 A CN 109987916A
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/34—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 cold phosphate binders
- C04B28/344—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 cold phosphate binders the phosphate binder being present in the starting composition solely as one or more phosphates
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- 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
- C04B2111/00758—Uses not provided for elsewhere in C04B2111/00 for agri-, sylvi- or piscicultural or cattle-breeding applications
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- Chemical Kinetics & Catalysis (AREA)
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- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Fertilizers (AREA)
Abstract
The invention belongs to plant raw eco-concrete field, and in particular to a kind of degradable phosphate cement base aggregate and preparation method thereof with efficiency slow release performance.By weight, the composition includes: 2-5 parts of molasses, 6-15 portions of soluble starches, 5-85 parts of citric acid powders, 40-55 parts of magnesium chlorides, 15-25 parts of ammonium dihydrogen phosphates, 5-12 parts of glucose, 2-8 parts of sodium soaps, 5-10 parts of water-absorbing resins, 5-15 parts of portland cements and 37-73 parts of water.The present invention regulates and controls the pH value that aggregate pH value changes aqueous solution in aggregate hole using six water ammonium magnesium phosphates as main component, by citric acid, to obtain the aggregate with good efficiency slow release and degradability.
Description
Technical field
The invention belongs to plant raw eco-concrete field, and in particular to a kind of degradable phosphoric acid with efficiency slow release performance
Salt cement base aggregate and preparation method thereof.
Background technique
In background of invention, it is only intended to increase understanding of the overall background of the invention for disclosed information, without
Necessarily it is considered as recognizing or imply that information composition has become in any form to show well known to persons skilled in the art
There is technology.
In the exploitations behavior such as water conservancy, traffic, the energy, urban sprawl, physical relief landforms and original vegetation coating quilt
Destroy, cause soil erosion, Partial little climate be changed and biological chain be cut off.In face of the situation of ecological environment of severe exacerbation,
It plants raw eco-concrete gradually to be applied, and achieves certain project benefit, ecological benefits and social benefit.
Planting raw eco-concrete is exactly the concrete with biocompatibility and ecological effect, and wherein ecological effect can be with table
Biology can be grown for concrete finished product, influence biology by stating, and the biology and concrete being attached on concrete have dependence.But
It is that concrete was on active service after a period of time, and the silt of root system of plant and rain drop erosion, which enters inside concrete, causes porosity to reduce,
So as to cause concrete cracking.Meanwhile the fertilizer that is applied of planting plants also day under the action of rain drop erosion and plant absorption
It is gradually thin, it is not able to satisfy plant demand；Therefore, it is necessary to further study the raw eco-concrete of the plant with efficiency slow release performance.
Summary of the invention
In view of the above problems, the present invention provides a kind of degradable phosphate cement base with efficiency slow release performance
Aggregate and preparation method thereof.The present invention regulates and controls aggregate pH value by citric acid and changes bone using six water ammonium magnesium phosphates as main component
The pH value for expecting aqueous solution in hole, to obtain the aggregate with good efficiency slow release and degradability.
For achieving the above object, the invention discloses following technical proposals:
The first object of the present invention: a kind of degradable phosphate cement base being used to prepare with efficiency slow release performance is provided
The composition of aggregate, by weight, the composition include: 2-5 parts of molasses, 6-15 portions of soluble starches, 5-85 portions of lemons
Sour powder, 40-55 part magnesium chloride, 15-25 parts of ammonium dihydrogen phosphates, 5-12 parts of glucose, 2-8 parts of sodium soaps, 5-10 parts of water suction trees
Rouge and 5-15 parts of portland cements；Each component in the composition is separately stored.
Further, the composition for being used to prepare the degradable phosphate cement base aggregate with efficiency slow release performance
Further include: 37-73 parts of water；And each component in the water and composition is separately stored.
Preferably, by weight, the composition includes: 2-3 parts of molasses, 6-10 portions of soluble starches, 5-82 parts of lemons
Lemon acid powder, 40-45 parts of magnesium chlorides, 15-20 parts of ammonium dihydrogen phosphates, 5-10 parts of glucose, 2-6 parts of sodium soaps, 5-8 parts of water suction trees
Rouge and 5-10 parts of portland cements；Each component in the composition is separately stored.Test display: when each component content is in
When stating in range, the total nitrogen preparation and total phosphorus preparation of obtained aggregate are more significant.
Preferably, by weight, the composition include: the composition include: 3-5 parts of molasses, 10-15 parts it is solvable
Property starch, 82-85 parts of citric acid powders, 45-55 parts of magnesium chlorides, 20-25 parts of ammonium dihydrogen phosphates, 10-12 parts of glucose, 6-8 parts of rouge
Fat acid sodium, 8-10 parts of water-absorbing resins and 10-15 parts of portland cements；Each component in the composition is separately stored.Test is aobvious
Show: when at each component content within the above range, there are obtained aggregate the performances such as superior absorptivity, degradation rate to refer to
Mark.
The second object of the present invention is to provide a kind of degradable phosphate cement base aggregate with efficiency slow release performance
Preparation method includes the following steps:
In proportion, after mixing by molasses, soluble starch and water, citric acid powder is added and stirs, it is mixed by what is obtained
Object drying, grinding are closed, coating citric acid is obtained；
In proportion, in the closing of set temperature after magnesium chloride, ammonium dihydrogen phosphate, water, glucose and sodium soap being mixed
It is slowly stirred in environment uniformly, then passes to ammonia and adjust pH value to alkalinity, then quickly stir the mixture to there is sediment,
Filtering, dries obtained precipitating, then grinding, obtains six water ammonium phosphate magnesium powders；
In proportion, it is stirred evenly after water-absorbing resin and water being mixed, the six water ammonium phosphate magnesium powder, the packet is then added
Obtained slurry is shaped to round shaped grain after mixing evenly by film citric acid and portland cement, maintenance, is obtained described slow with fertilizer efficiency
Release the degradable phosphate cement base aggregate of performance.
Further, in described the step of preparing coating citric acid, the additional amount of the water is 5-10 parts of water, and the lemon
Lemon acid powder is added by several times, and optionally, the citric acid powder is divided into 2-6 addition.
Preferably, in the step of six water ammonium phosphate magnesium powder of the preparation, by ammonia by pH value be adjusted to 8.8-10.2 it
Between.When pH is adjusted in above range, six water ammonium magnesium phosphate solubility are reduced, and solution can be rapidly achieved supersaturation, to send out
Raw flocculating setting.
Further, in the step of six water ammonium phosphate magnesium powder of the preparation, the additional amount of the water is 17-38 parts of water.
Further, in described the step of preparing water-absorbing resin and water mixing, the additional amount of the water is 15-25 parts of water.
Further, in described the step of preparing coating citric acid, the condition of drying are as follows: at 60-80 DEG C of drying 10-30 points
Clock；The time of the stirring is 15-60 minutes；The time of the grinding is 10-30 minutes.
Further, in the step of six water ammonium phosphate magnesium powder of the preparation, the temperature in closed container is 3-15 DEG C；It is described
The time of grinding is 10-20 minutes.
Further, in described the step of preparing aluminium powder and water mixing, the mixing time is 5-10 minutes；The round shaped grain
Partial size be diameter 0.4-1.2cm；The condition of the maintenance are as follows: 40-60 DEG C at a temperature of and 60-90% relative humidity
Under, it conserves 10-30 minutes.
In the present invention, the effect of the molasses specifically includes that (1) thickening power, can regulate and control mixing water in coated fertilizer
Additive amount, to control the porosity and rate of dissolution of coated fertilizer, and then control tartaric acid rate of release.(2) molasses side
Chain contains great amount of hydroxy group, can adsorb six water ammonium magnesium phosphates of dissolution, prevents the too early fertilizer efficiency release of six water ammonium magnesium phosphates, causes fertilizer
Waste and the failure of aggregate sustained release performance.The effect of the magnesium chloride and ammonium dihydrogen phosphate is mainly under the conditions of provided by the invention
Generate six water ammonium magnesium phosphates.The glucose is polyhydroxy aldehyde, and a large amount of hydroxyl can adsorb six water magnesium ammonium phosphate sediment objects, is adjusted
Control its settling rate, prevent it is too fast crystallization and caused by crystal it is excessively coarse, influence the rate of release of fertilizer efficiency.
The third object of the present invention is to provide and described is used to prepare the degradable phosphate cement with efficiency slow release performance
The composition of base aggregate and its aggregate of preparation and the aggregate processing method are planting answering in raw eco-concrete preparation
With.Degradable phosphate cement base aggregate prepared by the present invention with efficiency slow release performance has excellent efficiency slow release and can
Degradation property is highly suitable for planting the preparation of raw eco-concrete.
Compared with prior art, the present invention achieve it is following the utility model has the advantages that
(1) aggregate provided by the present invention is using six water ammonium magnesium phosphates as main component, by the membrane wrapping thickness of citric acid and
The porosity of aggregate regulates and controls citric acid rate of release, and then changes the pH value of aqueous solution in aggregate hole, to realize aggregate
Efficiency slow release and degradability.
(2) present invention coats citric acid with soluble starch, with the water suction dehydration volume change of water-absorbing resin in aggregate
Portion forms hole, regulates and controls citric acid rate of release by the porosity of the membrane wrapping thickness of citric acid and aggregate.
(3) stirring can effectively inhibit the quick knot of six water ammonium magnesium phosphates in 3-15 DEG C of the closed container that the present invention uses
Crystalline substance guarantees its flocculence, short texture, activity height；Being passed through ammonia not only can make basicity in container reach 8.8 or more, Er Qiezeng
Big ammonia concentration is conducive to six water ammonium magnesium phosphates and is formed.
Specific embodiment
It is noted that following detailed description is all illustrative, it is intended to provide further instruction to the present invention.Unless another
It indicates, all technical and scientific terms used herein has usual with general technical staff of the technical field of the invention
The identical meanings of understanding.
It should be noted that term used herein above is merely to describe specific embodiment, and be not intended to restricted root
According to exemplary embodiments of the present invention.As used herein, unless the context clearly indicates otherwise, otherwise singular
Also it is intended to include plural form, additionally, it should be understood that, when in the present specification using term "comprising" and/or " packet
Include " when, indicate existing characteristics, step, operation, device, component and/or their combination.
As previously mentioned, common concrete was on active service after a period of time, and the silt of root system of plant and rain drop erosion enters
Inside concrete causes porosity to reduce, so as to cause concrete cracking.Meanwhile the fertilizer that planting plants are applied is rushed in rainwater
It is also increasingly thin under the action of brush and plant absorption, it is not able to satisfy plant demand.Therefore, the present invention proposes a kind of slow with fertilizer efficiency
Release the degradable phosphate cement base aggregate and preparation method thereof of performance；Now in conjunction with specific embodiment to the present invention further into
Row explanation.
In the following example, the portland cement innovates Cement Co., Ltd purchased from Jinan century, and strength grade is
42.5。
Embodiment 1
A kind of degradable phosphate cement base aggregate processing method with efficiency slow release performance, includes the following steps:
(1) after mixing by 2 parts of molasses, 6 portions of soluble starches and 5 parts of water, 75 parts of citric acid powders are added (to divide 2 times
It is added), and stir 15 minutes, it is dried 10 minutes at 60 DEG C, then obtain coating citric acid in grinding 10 minutes；
(2) by 40 parts of magnesium chlorides, 15 parts of ammonium dihydrogen phosphates, 17 parts of water, 5 parts of glucose and 2 parts of sodium soaps at 15 DEG C
It is stirred slowly after ten minutes in closed container, is passed through ammonia until pH value is adjusted to 8.8, then quickly stirs until there is cotton-shaped six water phosphorus
Sour ammonium magnesium precipitate object, filtering, drying obtain six water ammonium phosphate magnesium powders for grinding 10 minutes again；
(3) 5 parts of water-absorbing resins and 15 parts of water are stirred 5 minutes, 50 part of six water ammonium phosphate magnesium powder, 5 parts of coating lemons is added
Acid and 5 parts of portland cement stirrings, and it is shaped to the round shaped grain of diameter 0.4cm, it is supported under conditions of 40 DEG C and relative humidity 60%
Shield 10 minutes, obtains aggregate.
Embodiment 2
A kind of degradable phosphate cement base aggregate processing method with efficiency slow release performance, includes the following steps:
(1) after mixing by 5 parts of molasses, 15 portions of soluble starches and 10 parts of water, 85 parts of citric acid powders are added and (divide 6
Secondary addition), and stir 60 minutes, it is dried 30 minutes at 80 DEG C, then obtain coating citric acid in grinding 30 minutes；
(2) by 55 parts of magnesium chlorides, 25 parts of ammonium dihydrogen phosphates, 38 parts of water, 12 parts of glucose and 8 parts of sodium soaps at 3 DEG C
It is stirred slowly after twenty minutes in closed container, is passed through ammonia until pH value is adjusted to 10.2, then quickly stirs until there is cotton-shaped six water
Magnesium ammonium phosphate sediment object, filtering, drying obtain six water ammonium phosphate magnesium powders for grinding 30 minutes again；
(3) 10 parts of water-absorbing resins and 25 parts of water are stirred 10 minutes, 75 part of six water ammonium phosphate magnesium powder, 10 parts of coating lemons is added
Lemon acid and 15 parts of portland cement stirrings, and it is shaped to the round shaped grain of diameter 1.2cm, under conditions of 60 DEG C and relative humidity 90%
Maintenance 30 minutes, obtains aggregate.
Embodiment 3
A kind of degradable phosphate cement base aggregate processing method with efficiency slow release performance, includes the following steps:
(1) after mixing by 3 parts of molasses, 10 portions of soluble starches and 8 parts of water, 82 parts of citric acid powders are added (to divide 5 times
It is added), and stir 30 minutes, it is dried 15 minutes at 75 DEG C, then obtain coating citric acid in grinding 20 minutes；
(2) by 45 parts of magnesium chlorides, 20 parts of ammonium dihydrogen phosphates, 30 parts of water, 10 parts of glucose and 6 parts of sodium soaps at 12 DEG C
After stirring 15 minutes slowly in closed container, ammonia is passed through until pH value is adjusted to 10, then quickly stirs until there is cotton-shaped six water phosphorus
Sour ammonium magnesium precipitate object, filtering, drying obtain six water ammonium phosphate magnesium powders for grinding 20 minutes again；
(3) 8 parts of water-absorbing resins and 20 parts of water are stirred 8 minutes, 60 part of six water ammonium phosphate magnesium powder, 8 parts of coating lemons is added
Acid and 10 parts of portland cement stirrings, and it is shaped to the round shaped grain of diameter 0.9cm, it is supported under conditions of 45 DEG C and relative humidity 85%
Shield 15 minutes, obtains aggregate.
Experimental example 1
A kind of degradable aggregate processing method with efficiency slow release performance, with embodiment 1, difference is: step (1)
In be added without soluble starch, to verify influence of the soluble starch cladding citric acid to aggregate efficiency slow release.
Experimental example 2
A kind of degradable aggregate processing method with efficiency slow release performance, with embodiment 1, difference is: step (2)
In do not stirred in ammonia atmosphere and 40 DEG C of closed container, but be stirred under room temperature, air conditions, to verify preparation
Influence of the six water magnesium ammonium phosphate sediment objects to aggregate efficiency slow release and degradability.
Experimental example 3
A kind of degradable aggregate processing method with efficiency slow release performance, with embodiment 1, difference is: step (3)
In be added without resin, to verify influence of the resin to aggregate efficiency slow release and degradability.Performance test:
According to the aggregate of GB/T14685-2011 " for building cobble, rubble " detection embodiment 1-3 and test example 1-3 preparation
Crush index be and water absorption rate.
Referring to GBT11894-89 " the measurement alkaline chitinase of water quality total nitrogen clears up ultraviolet spectrophotometry " and GB
100893-89 " the measurement ammonium molybdate spectra photometric method of water quality total phosphorus " measures 25 DEG C that embodiment 1-3 and test example 1-3 impregnates 28 days
Thermostatted water total nitrogen in solution, total phosphorus content.Aggregate is soaked in 60 days measurement degradation rates in 25 DEG C of thermostatted waters.As a result such as 1 institute of table
Show.
Table 1
| Embodiment 1 | Embodiment 2 | Embodiment 3 | Experimental example 1 | Experimental example 2 | Experimental example 3 | |
| Crush index/% | 15.1 | 14.9 | 13.6 | 15.2 | 17.1 | 15.3 |
| Water absorption rate/% | 22.7 | 25.1 | 23.1 | 22.2 | 13.6 | 9.2 |
| Degradation rate/% | 34.7 | 40.7 | 38.5 | 75.8 | 20.4 | 16.6 |
| Total nitrogen preparation/% | 27.7 | 26.3 | 28.6 | 56.9 | 9.7 | 12.4 |
| Total phosphorus preparation/% | 39.1 | 34.4 | 39.7 | 72.3 | 13.4 | 15.8 |
Test result can be seen that relative to embodiment 1 from table 1, in experimental example 1 because without starch in citric acid table
Layer forms coating and controls its rate of release, leads to that the citric acid of quick release reduces solution ph and six water ammonium magnesium phosphates are quick
Dissolution, degradation rate, total nitrogen and the total phosphorus of aggregate add up release rate rapid growth, cannot achieve the purpose of sustained release.In experimental example 2
Six obtained water ammonium magnesium phosphates are non-cotton-shaped, mostly crystal, poor activity, provide moisture and regulation porosity without resin in experimental example 3
Therefore there is a sharp decline in the degradation rate of obtained aggregate and accumulative release rate index.The packet that the present invention passes through citric acid
The porosity of film thickness and aggregate regulates and controls citric acid rate of release, and then changes the pH value of aqueous solution in aggregate hole, thus
Realize the efficiency slow release and degradability of aggregate.Meanwhile the present invention with the water suction dehydration volume change of water-absorbing resin in aggregate
Inside forms hole, regulates and controls citric acid rate of release by the porosity of the membrane wrapping thickness of citric acid and aggregate, to obtain
Aggregate with good efficiency slow release and degradability.
The above description is only a preferred embodiment of the present invention, is not intended to restrict the invention, for those skilled in the art
For member, the invention may be variously modified and varied.All within the spirits and principles of the present invention, it is made it is any modification,
Equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of composition for being used to prepare the degradable phosphate cement base aggregate with efficiency slow release performance, feature exist
In by weight, the composition includes: 2-5 parts of molasses, 6-15 portions of soluble starches, 5-85 parts of citric acid powders, 40-55
Part magnesium chloride, 15-25 parts of ammonium dihydrogen phosphates, 5-12 parts of glucose, 2-8 parts of sodium soaps, 5-10 parts of water-absorbing resins and 5-15 parts
Portland cement；Each component in the composition is separately stored.
2. composition as described in claim 1, which is characterized in that further include: 37-73 parts of water；And in the water and composition
Each component separately store.
3. composition as claimed in claim 1 or 2, which is characterized in that by weight, the composition includes: 2-3 portions of sugar
Honey, 6-10 portions of soluble starches, 5-82 parts of citric acid powders, 40-45 parts of magnesium chlorides, 15-20 parts of ammonium dihydrogen phosphates, 5-10 portions of grapes
Sugar, 2-6 parts of sodium soaps, 5-8 parts of water-absorbing resins and 5-10 parts of portland cements；Each component in the composition is separately deposited
It puts.
4. composition as claimed in claim 1 or 2, which is characterized in that by weight, the composition includes: described group
Closing object includes: 3-5 parts of molasses, 10-15 portions of soluble starches, 82-85 parts of citric acid powders, 45-55 parts of magnesium chlorides, 20-25 parts of phosphorus
Acid dihydride ammonium, 10-12 part glucose, 6-8 parts of sodium soaps, 8-10 parts of water-absorbing resins and 10-15 parts of portland cements；Described group
The each component closed in object is separately stored.
5. having the degradable phosphate cement of efficiency slow release performance using the described in any item composition preparations of claim 1-4
The method of base aggregate, which comprises the steps of:
In proportion, after mixing by molasses, soluble starch and water, citric acid powder is added and stirs, the mixture that will be obtained
Drying, grinding, obtain coating citric acid；
In proportion, in the enclosed environment of set temperature after magnesium chloride, ammonium dihydrogen phosphate, water, glucose and sodium soap being mixed
In be slowly stirred uniformly, then pass to ammonia and adjust pH value to alkalinity, then quickly stir the mixture to there is sediment, mistake
Filter, dries obtained precipitating, then grinding, obtains six water ammonium phosphate magnesium powders；
In proportion, it is stirred evenly after water-absorbing resin and water being mixed, the six water ammonium phosphate magnesium powder, the coating lemon is then added
Lemon acid and portland cement, are shaped to round shaped grain for obtained slurry after mixing evenly, conserve, and obtain described with efficiency slow release
The degradable phosphate cement base aggregate of energy.
6. method as claimed in claim 5, which is characterized in that in described the step of preparing coating citric acid, the water adds
Entering amount is 5-10 parts of water；
Alternatively, the additional amount of the water is 17-38 parts of water in the step of six water ammonium phosphate magnesium powder of the preparation；
Alternatively, the additional amount of the water is 15-25 parts of water in described the step of preparing water-absorbing resin and water mixing.
7. method as claimed in claim 5, which is characterized in that in the step of six water ammonium phosphate magnesium powder of the preparation:
PH value is adjusted between 8.8-10.2 by ammonia；
Preferably, the citric acid powder is added by several times, and optionally, the citric acid powder is divided into 2-6 addition.
8. such as the described in any item methods of claim 5-7, which is characterized in that in described the step of preparing coating citric acid, dry
Dry condition are as follows: 60-80 DEG C drying 10-30 minutes；Preferably, the time of the stirring is 15-60 minutes；Preferably, institute
The time for stating grinding is 10-30 minutes；
Preferably, in the step of six water ammonium phosphate magnesium powder of the preparation, the temperature in closed container is 3-15 DEG C；The grinding
Time is 10-20 minutes.
9. such as the described in any item methods of claim 5-7, which is characterized in that in described the step of preparing aluminium powder and water mixing:
The mixing time is 5-10 minutes；
Preferably, the partial size of the round shaped grain is diameter 0.4-1.2cm；
Preferably, the condition of the maintenance are as follows: 40-60 DEG C at a temperature of and 60-90% relative humidity under, conserve 10-30
Minute.
10. composition according to any one of claims 1-4 and/or such as the described in any item methods of claim 5-9 and its
The aggregate of preparation is planting the application in raw eco-concrete preparation.
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