CN109574582A - A kind of pervious concrete and preparation method thereof with absorption heavy metal ion ability - Google Patents
A kind of pervious concrete and preparation method thereof with absorption heavy metal ion ability Download PDFInfo
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- CN109574582A CN109574582A CN201811368306.7A CN201811368306A CN109574582A CN 109574582 A CN109574582 A CN 109574582A CN 201811368306 A CN201811368306 A CN 201811368306A CN 109574582 A CN109574582 A CN 109574582A
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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
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
- C04B28/04—Portland cements
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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
- C04B2111/00241—Physical properties of the materials not provided for elsewhere in C04B2111/00
- C04B2111/00284—Materials permeable to liquids
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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
- C04B2111/20—Resistance against chemical, physical or biological attack
- C04B2111/29—Frost-thaw resistance
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
- Water Treatment By Sorption (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention discloses a kind of pervious concretes and preparation method thereof with absorption heavy metal ion ability, belong to building material technical field.The pervious concrete is made of the following raw material: Aggregate of recycled concrete 18.38-18.50% that Aggregate of recycled concrete 55.14-56.49% that cement 20.89-21.18%, partial size are 2.35-4.75mm, partial size are 4.76-9.5mm, silicon ash 1.31-1.35%, adsorbent material 1.27-1.67%, water-reducing agent 0.45-0.74%, aqueous epoxy resins 0.43-2.07%.The present invention uses Aggregate of recycled concrete and cement for primary raw material, and after mixed silicon ash, adsorbent material, water-reducing agent and aqueous epoxy resins, pervious concrete is prepared by simple process method, both it is low building waste recovery utilization rate had been solved, overcome the problems, such as that Aggregate of recycled concrete intensity is low again, and the pervious concrete being prepared into not only has the advantages that intensity is big, water permeability is good, at low cost, more has the ability for adsorbing toxic heavy metal ion, especially to Cd2+With good absorption property.
Description
Technical field
The invention belongs to the field of building materials more particularly to a kind of pervious concretes with absorption heavy metal ion ability
And preparation method thereof
Background technique
Since China widelys popularize " sponge city " construction plan, permeable pavement becomes industrial hot spot research and application item
Mesh.Pervious concrete is by raw materials such as cement, water, the aggregate of specific gradation, additive, admixture and inorganic pigments by specific ratio
Example assembles, and is both able to satisfy through a kind of concrete that special process is prepared with good water penetration and structural strength
Mankind's activity is to the requirement of hardened ground, and the ecological dominance with natural lawn and soil ground, rapidly becomes sponge
The important materials of permeable pavement in City Construction Project.
For a long time, building waste recycling in China's does not cause enough attention, is usually just transported without any processing
It to countryside or rural area, is handled by the way of air storage or landfill, so that building waste problem increasingly aggravates.In recent years
Coming, the increase with China to ecological environmental protection dynamics, building waste recycling and reusing is gradually taken seriously, especially with
Recycled aggregate prepares pervious concrete, can not only save building cost, but also can promote the recycling of solid waste resource,
Solve building waste pollution problem.In addition, toxic heavy metal contamination water body is asked in the fast-developing process of China's industrialization
Topic is on the rise, and heavy metal toxicity is big, and will not voluntarily degrade in the environment, become current urgent need to resolve environmental problem it
One.
108264253 A of patent CN discloses a kind of preparation of pervious concrete with heavy metal ion Scavenging activity
Method carries out heating stirring processing comprising steps of 1) mixing flyash and NaOH solution, is successively filtered, is washed to
Property, drying, obtain alkali-activated carbonatite flyash；2) alkali-activated carbonatite flyash and the ethanol solution of 3- thiocyanatopropyltriethoxysilane are mixed
It closes, carries out stirring at normal temperature processing, be then filtered, ethyl alcohol cleaning, drying, obtain TCPS modification flyash；3) TCPS is modified
Flyash mixes according to the ratio with pervious concrete raw material, is then stirred to obtain pervious concrete mixture；4) by gained
Pervious concrete mixture pours into mold, is conserved, demoulds to obtain the pervious concrete with heavy metal ion Scavenging activity
Product.This method pre-processes using simple alkali-activated carbonatite and combines stirring composite means, promotes alkali-activated carbonatite flyash and 3- sulphur cyanogen
TCPS is effectively bonded in fine coal gray surface by the formation of Si-O-Si key between base propyl-triethoxysilicane, carries out aquation gelling
After reaction, chelating suction-operated using TCPS to heavy metal ion is obviously improved gained pervious concrete to heavy metal ion
Absorption stability energy.But due to using alkali-activated carbonatite pre-treating fly ash and stir it is compound after, need to be washed to neutrality, it is not only unrestrained
Take great lot of water resources, and water lotion is alkaline sewage, could also be discharged after other purification means are handled, shows
So increase cost.Importantly, the water penetration and Structural strength calls of pervious concrete are higher, but this report passes through specific skill
After the processing of art means, concrete structural strength and water penetration are unknown.
Summary of the invention
It is an object of the invention to: a kind of high-strength, high water-permeability is provided, and there is the permeable of absorption heavy metal ion ability
Concrete and preparation method thereof, after the reparation of the ingredients such as adsorbent material, water-reducing agent, aqueous epoxy resins and modification regeneration aggregate
Prepare pervious concrete, solve traditional pervious concrete poor mechanical property, water permeability it is bad, it is at high cost, can not adsorb it is toxic
The problems such as heavy metal.
To achieve the goals above, the present invention adopts the following technical scheme:
A kind of pervious concrete with absorption heavy metal ion ability, it is characterised in that: by following mass percent
Component raw material is made: cement 20.89-21.18%, the Aggregate of recycled concrete 55.14- that partial size is 2.35-4.75mm
56.49%, partial size is Aggregate of recycled concrete 18.38-18.50%, the silicon ash 1.31-1.35%, adsorption material of 4.76-9.5mm
Expect 1.27-1.67%, water-reducing agent 0.45-0.74%, aqueous epoxy resins 0.43-2.07%, the sum of described component is 100%,
And it is 0.21 that said components raw material, which also adds water to be adjusted to the ratio of mud,.
Preferably, a kind of pervious concrete with absorption heavy metal ion ability, it is characterised in that: by as follows
The component raw material of mass percent is made: cement 20.71%, the Aggregate of recycled concrete that partial size is 2.35-4.75mm
55.14%, partial size is the Aggregate of recycled concrete 18.38% of 4.76-9.5mm, silicon ash 1.31%, adsorbent material 1.66%, subtracts
Aqua 0.73%, aqueous epoxy resins 2.07%, and it is 0.21 that said components raw material, which adds water to be adjusted to the ratio of mud,.
Preferably, the adsorbent material is ethylenediamine tetra-acetic acid magnesium-aluminium intercalated houghite.
Preferably, the water-reducing agent is polycarboxylic type high performance water reducer, solid content 20%, water-reducing rate > 27.0%.
Preferably, the solid content of the aqueous epoxy resins is 50 ± 2%, epoxide equivalent 1200-1850g/eq, 25 DEG C
When rotary viscosity be 500-3000mPas.
Preferably, the cement is 52.5 portland cement of PO.
Preferably, the porosity for the Aggregate of recycled concrete that the partial size is 2.35-4.75mm is 52%, tightly packed close
Degree is 1200kg/m3, apparent density 2610kg/m3, 24 hours water absorption rates are 8.0%, crush index 10%；The partial size
Porosity for the Aggregate of recycled concrete of 4.76-9.5mm is 52%, tight packing density 1250kg/m3, apparent density is
2630kg/m3, 24 hours water absorption rates are 7.5%, crush index 10%.
Another object of the present invention is: also disclosing the above-mentioned pervious concrete with absorption heavy metal ion ability
Preparation method, comprising the following steps:
1) each component raw material is weighed according to the proportion, it is spare；
2) Aggregate of recycled concrete of described two different-grain diameters is added in horizontal mixer, mixing 1 minute；
3) cement, silicon ash and adsorbent material are added in planetary stirring machine, carry out low speed mixing, obtains mixture A,
In, the low speed mixing time is not less than 1 minute；
4) water-reducing agent and aqueous epoxy resins are dissolved in the water and are configured to mixing water, mixing water is then added to step
3) in the mixture A mixed, and after stirring at low speed 2 minutes, then quickly stirring 2 minutes, cementitious material is made；
5) cementitious material made of step 4) is added to together with the Aggregate of recycled concrete that step 2) mixes horizontal
In blender, stir 3 minutes it is above and adjust after the ratio of mud is 0.21, that is, be made with adsorbing the permeable of heavy metal ion ability
Concrete.
Compared with prior art, the beneficial effects of the present invention are:
The present invention uses Aggregate of recycled concrete and cement for primary raw material, and mixed silicon ash, adsorbent material, water-reducing agent and
After aqueous epoxy resins, it is prepared into pervious concrete by simple process method, it is low not only to have solved building waste recovery utilization rate, but also
Overcome the problems, such as that Aggregate of recycled concrete intensity is low, and the pervious concrete being prepared into not only has that intensity is big, water permeability
Good, advantage at low cost, more has the ability for adsorbing toxic heavy metal ion, especially to Cd2+With good absorption property.
Specific embodiment
To be clearer and more clear technical purpose of the invention, scheme and effect, combined with specific embodiments below to this hair
Bright technical solution is further elaborated.It should be appreciated that embodiment described below is only applicable to explain the present invention, and it is uncomfortable
For limiting the present invention.
Embodiment 1:
A kind of pervious concrete with absorption heavy metal ion ability, is made by the steps into:
1) raw material is weighed according to following mass ratio: cement 20.71% (14.2kg), silicon ash 1.31% (900g), adsorption material
Expect that 1.66% (1136g), partial size are the Aggregate of recycled concrete 55.14% (37.8kg) of 2.35-4.75mm, partial size 4.76-
The Aggregate of recycled concrete 18.38% (12.6kg) of 9.5mm, water-reducing agent 0.73% (500g), aqueous epoxy resins 2.07%
(1420g)；
Wherein: the cement is 52.5 portland cement of PO；
The adsorbent material is ethylenediamine tetra-acetic acid magnesium-aluminium intercalated houghite；
The water-reducing agent is polycarboxylic type high performance water reducer, solid content 20%, water-reducing rate > 27.0%；
The solid content of the aqueous epoxy resins is 50 ± 2%, epoxide equivalent 1200-1850g/eq, and 25 DEG C of whens rotate
Viscosity is 500-3000mPas；
The porosity for the Aggregate of recycled concrete that the partial size is 2.35-4.75mm is 52%, and tight packing density is
1200kg/m3, apparent density 2610kg/m3, 24 hours water absorption rates are 8.0%, crush index 10%；
The porosity for the Aggregate of recycled concrete that the partial size is 4.76-9.5mm is 52%, and tight packing density is
1250kg/m3, apparent density 2630kg/m3, 24 hours water absorption rates are 7.5%, crush index 10%.
2) horizontal stir is added in the Aggregate of recycled concrete that the partial size is respectively 2.35-4.75mm, 4.76-9.5mm
It mixes in machine, mixing 1 minute.
3) cement, silicon ash and adsorbent material are added in planetary stirring machine, carry out low speed mixing, obtains mixture
A, low speed mixing time are 1 minute, and revolving speed control is 62 ± 5 revs/min.
4) water-reducing agent and aqueous epoxy resins are dissolved in 2.97kg water, are configured to mixing water, then by mix
Water is added in the mixture A that step 3) mixes, and after stirring at low speed 2 minutes, then quickly stirring 2 minutes, and gelling material is made
Material, wherein revolving speed control is 62 ± 5 revs/min when stirring at low speed, and quickly revolving speed control is 125 ± 10 revs/min when stirring；
5) cementitious material made of step 4) is added to together with the Aggregate of recycled concrete that step 2) mixes horizontal
In blender, stirring 4 minutes and adjust the ratio of mud be 0.21 after, that is, be made with absorption heavy metal ion ability permeable coagulation
Soil.
Embodiment 2:
A kind of pervious concrete with absorption heavy metal ion ability, is made by the steps into:
1) raw material is weighed according to following mass ratio: cement 21.18% (13.5kg), silicon ash 1.35% (860g), adsorption material
Expect that 1.27% (810g), partial size are the Aggregate of recycled concrete 56.49% (36.0kg) of 2.35-4.75mm, partial size 4.76-
The Aggregate of recycled concrete 18.83% (12.0kg) of 9.5mm, water-reducing agent 0.45% (288g), aqueous epoxy resins 0.43%
(270g)；
Wherein: the cement is 52.5 portland cement of PO；
The adsorbent material is ethylenediamine tetra-acetic acid magnesium-aluminium intercalated houghite；
The water-reducing agent is polycarboxylic type high performance water reducer, solid content 20%, water-reducing rate > 27.0%；
The solid content of the aqueous epoxy resins is 50 ± 2%, epoxide equivalent 1200-1850g/eq, and 25 DEG C of whens rotate
Viscosity is 500-3000mPas；
The porosity for the Aggregate of recycled concrete that the partial size is 2.35-4.75mm is 52%, and tight packing density is
1200kg/m3, apparent density 2610kg/m3, 24 hours water absorption rates are 8.0%, crush index 10%；
The porosity for the Aggregate of recycled concrete that the partial size is 4.76-9.5mm is 52%, and tight packing density is
1250kg/m3, apparent density 2630kg/m3, 24 hours water absorption rates are 7.5%, crush index 10%.
2) horizontal stir is added in the Aggregate of recycled concrete that the partial size is respectively 2.35-4.75mm, 4.76-9.5mm
It mixes in machine, mixing 1 minute.
3) cement, silicon ash and adsorbent material are added in planetary stirring machine, carry out low speed mixing, obtains mixture
A, low speed mixing time are 1 minute, and revolving speed control is 62 ± 5 revs/min.
4) water-reducing agent and aqueous epoxy resins are dissolved in 2.84kg water, are configured to mixing water, then by mix
Water is added in the mixture A that step 3) mixes, and after stirring at low speed 2 minutes, then quickly stirring 2 minutes, and gelling material is made
Material, wherein revolving speed control is 62 ± 5 revs/min when stirring at low speed, and quickly revolving speed control is 125 ± 10 revs/min when stirring；
5) cementitious material made of step 4) is added to together with the Aggregate of recycled concrete that step 2) mixes horizontal
In blender, after stirring 4 minutes, adjusting the ratio of mud is 0.21, that is, the permeable coagulation with absorption heavy metal ion ability is made
Soil.
Embodiment 3:
A kind of pervious concrete with absorption heavy metal ion ability, is made by the steps into:
1) raw material is weighed according to following mass ratio: cement 20.89% (15.7kg), silicon ash 1.33% (1000g), adsorption material
Expect that 1.67% (1256g), partial size are the Aggregate of recycled concrete 55.62% (41.8kg) of 2.35-4.75mm, partial size 4.76-
The Aggregate of recycled concrete 18.50% (13.9kg) of 9.5mm, water-reducing agent 0.74% (552g), aqueous epoxy resins 1.25%
(942g)；
Wherein: the cement is 52.5 portland cement of PO；
The adsorbent material is ethylenediamine tetra-acetic acid magnesium-aluminium intercalated houghite；
The water-reducing agent is polycarboxylic type high performance water reducer, solid content 20%, water-reducing rate > 27.0%；
The solid content of the aqueous epoxy resins is 50 ± 2%, epoxide equivalent 1200-1850g/eq, and 25 DEG C of whens rotate
Viscosity is 500-3000mPas；
The porosity for the Aggregate of recycled concrete that the partial size is 2.35-4.75mm is 52%, and tight packing density is
1200kg/m3, apparent density 2610kg/m3, 24 hours water absorption rates are 8.0%, crush index 10%；
The porosity for the Aggregate of recycled concrete that the partial size is 4.76-9.5mm is 52%, and tight packing density is
1250kg/m3, apparent density 2630kg/m3, 24 hours water absorption rates are 7.5%, crush index 10%.
2) horizontal stir is added in the Aggregate of recycled concrete that the partial size is respectively 2.35-4.75mm, 4.76-9.5mm
It mixes in machine, mixing 1 minute.
3) cement, silicon ash and adsorbent material are added in planetary stirring machine, carry out low speed mixing, obtains mixture
A, low speed mixing time are 1 minute, and revolving speed control is 62 ± 5 revs/min.
4) water-reducing agent and aqueous epoxy resins are dissolved in 3.04kg water, are configured to mixing water, then by mix
Water is added in the mixture A that step 3) mixes, and after stirring at low speed 2 minutes, then quickly stirring 2 minutes, and gelling material is made
Material, wherein revolving speed control is 62 ± 5 revs/min when stirring at low speed, and quickly revolving speed control is 125 ± 10 revs/min when stirring.
5) cementitious material made of step 4) is added to together with the Aggregate of recycled concrete that step 2) mixes horizontal
In blender, stirring 3 minutes or more, and adjust after the ratio of mud is 0.21, that is, it is made with the saturating of absorption heavy metal ion ability
Water coagulation soil.
In order to verify the practical efficiency of pervious concrete prepared by the method for the present invention, detected, the result is shown under
Table 1.
The performance indicator of table 1- pervious concrete
Note: control group described in table 1 is traditional pervious concrete；Institute's compression strength and flexural strength are the surveys at 28 days
Examination.
From upper table 1 it is found that the pervious concrete of the method for the present invention preparation not only has intensity big, permeable, good frost resistance,
More counterweight Metal Ions Cd2+With good adsorption capacity, and raw material sources of the present invention are wide, preparation method is simple,
It is reproducible, it is suitble to promote and apply.
Claims (8)
1. a kind of pervious concrete with absorption heavy metal ion ability, it is characterised in that: by the group of following mass percent
Point raw material is made: cement 20.89-21.18%, the Aggregate of recycled concrete 55.14-56.49% that partial size is 2.35-4.75mm,
Partial size is Aggregate of recycled concrete 18.38-18.50%, silicon ash 1.31-1.35%, the adsorbent material 1.27- of 4.76-9.5mm
1.67%, water-reducing agent 0.45-0.74%, aqueous epoxy resins 0.43-2.07%, the sum of described component are 100%, and above-mentioned group
Dividing raw material that water is also added to be adjusted to the ratio of mud is 0.21.
2. a kind of pervious concrete with absorption heavy metal ion ability as described in claim 1, it is characterised in that: by such as
The component raw material of lower mass percent is made: cement 20.71%, the Aggregate of recycled concrete that partial size is 2.35-4.75mm
55.14%, partial size is the Aggregate of recycled concrete 18.38% of 4.76-9.5mm, silicon ash 1.31%, adsorbent material 1.66%, subtracts
Aqua 0.73%, aqueous epoxy resins 2.07%, and it is 0.21 that said components raw material, which adds water to be adjusted to the ratio of mud,.
3. a kind of pervious concrete with absorption heavy metal ion ability as claimed in claim 1 or 2, it is characterised in that:
The adsorbent material is ethylenediamine tetra-acetic acid magnesium-aluminium intercalated houghite.
4. a kind of pervious concrete with absorption heavy metal ion ability as claimed in claim 1 or 2, it is characterised in that:
The water-reducing agent is polycarboxylic type high performance water reducer, solid content 20%, water-reducing rate > 27.0%.
5. a kind of pervious concrete with absorption heavy metal ion ability as claimed in claim 1 or 2, it is characterised in that:
The solid content of the aqueous epoxy resins is 50 ± 2%, epoxide equivalent 1200-1850g/eq, and rotary viscosity is at 25 DEG C
500-3000mPa·s。
6. a kind of pervious concrete with absorption heavy metal ion ability as claimed in claim 1 or 2, it is characterised in that:
The cement is 52.5 portland cement of PO.
7. a kind of pervious concrete with absorption heavy metal ion ability as claimed in claim 1 or 2, it is characterised in that:
The porosity for the Aggregate of recycled concrete that the partial size is 2.35-4.75mm is 52%, tight packing density 1200kg/m3,
Apparent density is 2610kg/m3, 24 hours water absorption rates are 8.0%, crush index 10%；The partial size is 4.76-9.5mm's
The porosity of Aggregate of recycled concrete is 52%, tight packing density 1250kg/m3, apparent density 2630kg/m3, 24 is small
When water absorption rate be 7.5%, crush index 10%.
8. a kind of preparation method of the pervious concrete with absorption heavy metal ion ability according to claim 1 or 2,
It is characterized by comprising following steps:
1) each component raw material is weighed according to the proportion, it is spare；
2) Aggregate of recycled concrete of described two different-grain diameters is added in horizontal mixer, mixing 1 minute；
3) cement, silicon ash and adsorbent material are added in planetary stirring machine, carry out low speed mixing, obtains mixture A, wherein
The low speed mixing time is not less than 1 minute；
4) water-reducing agent and aqueous epoxy resins are dissolved in the water and are configured to mixing water, it is mixed that mixing water is then added to step 3)
In the mixture A got togather, and after stirring at low speed 2 minutes, then quickly stirring 2 minutes, cementitious material is made；
5) cementitious material made of step 4) is added to Horizontal stirring together with the Aggregate of recycled concrete that step 2) mixes
In machine, stirring 3 minutes or more, and adjust after the ratio of mud is 0.21, that is, it is made with the permeable mixed of absorption heavy metal ion ability
Solidifying soil.
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Cited By (5)
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| CN112266267A (en) * | 2020-10-19 | 2021-01-26 | 深圳市为海建材有限公司 | Light recycled aggregate pervious concrete and preparation method thereof |
| CN113880507A (en) * | 2021-11-18 | 2022-01-04 | 祝福来 | Colored pervious concrete with long service life and preparation method thereof |
| CN114195441A (en) * | 2021-12-28 | 2022-03-18 | 中国科学院、水利部成都山地灾害与环境研究所 | Microporous two-stage adsorption concrete product, preparation method and application thereof |
| CN114591058A (en) * | 2022-03-30 | 2022-06-07 | 中建安装集团有限公司 | Self-curing sludge-based material for road filler and preparation method thereof |
| CN116693058A (en) * | 2023-04-15 | 2023-09-05 | 山东建筑大学 | Agricultural water purification recycling system that moves back |
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| CN112266267A (en) * | 2020-10-19 | 2021-01-26 | 深圳市为海建材有限公司 | Light recycled aggregate pervious concrete and preparation method thereof |
| CN113880507A (en) * | 2021-11-18 | 2022-01-04 | 祝福来 | Colored pervious concrete with long service life and preparation method thereof |
| CN114195441A (en) * | 2021-12-28 | 2022-03-18 | 中国科学院、水利部成都山地灾害与环境研究所 | Microporous two-stage adsorption concrete product, preparation method and application thereof |
| CN114591058A (en) * | 2022-03-30 | 2022-06-07 | 中建安装集团有限公司 | Self-curing sludge-based material for road filler and preparation method thereof |
| CN114591058B (en) * | 2022-03-30 | 2022-08-12 | 中建安装集团有限公司 | Self-maintenance sludge-based material for road filler and preparation method thereof |
| CN116693058A (en) * | 2023-04-15 | 2023-09-05 | 山东建筑大学 | Agricultural water purification recycling system that moves back |
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