CN106630921B - High-performance pervious concrete cementing agent and preparation method thereof - Google Patents
High-performance pervious concrete cementing agent and preparation method thereof Download PDFInfo
- Publication number
- CN106630921B CN106630921B CN201611050820.7A CN201611050820A CN106630921B CN 106630921 B CN106630921 B CN 106630921B CN 201611050820 A CN201611050820 A CN 201611050820A CN 106630921 B CN106630921 B CN 106630921B
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- China
- Prior art keywords
- pervious concrete
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- magnesium
- phosphate cement
- cementing agent
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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
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C11/00—Details of pavings
- E01C11/22—Gutters; Kerbs ; Surface drainage of streets, roads or like traffic areas
- E01C11/224—Surface drainage of streets
- E01C11/225—Paving specially adapted for through-the-surfacing drainage, e.g. perforated, porous; Preformed paving elements comprising, or adapted to form, passageways for carrying off drainage
- E01C11/226—Coherent pavings
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C7/00—Coherent pavings made in situ
- E01C7/08—Coherent pavings made in situ made of road-metal and binders
- E01C7/10—Coherent pavings made in situ made of road-metal and binders of road-metal and cement or like binders
- E01C7/14—Concrete paving
- E01C7/142—Mixtures or their components, e.g. aggregate
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Structural Engineering (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention disclosesThe high-performance pervious concrete cementing agent comprises 50-90 parts of magnesium ammonium phosphate cement, 10-50 parts of magnesium potassium phosphate cement and 2-15 parts of B2O3The pervious concrete prepared by the cementing agent has obviously better performance than common pervious concrete, has high strength and excellent salt freezing and corrosion resistance and wear resistance, does not need special maintenance after construction, can open traffic quickly, and can be widely used in multiple fields of urban road engineering, garden engineering, environmental engineering and the like.
Description
Technical Field
The invention belongs to the technical field of road construction, and particularly relates to a high-performance pervious concrete cementing agent and a preparation method thereof.
Background
The Pervious Concrete (Pervious Concrete) is a porous Concrete with continuous pores, which is prepared by specific grading aggregate, cement, water, additive, mineral admixture and the like according to a specific ratio through a special process, the quality of the Pervious Concrete at present is different, and the Pervious Concrete mainly has the following problems that the ① Pervious Concrete is low in strength, ② is poor in abrasion resistance and frost resistance, ③ is poor in durability, phenomena of aging, cracking, peeling and the like are easy to occur, and the bonding effect of ④ and an underlying layer is poor.
The invention adopts phosphate cement with high strength, excellent frost resistance, good wear resistance and bonding strength comparable to epoxy resin as a cementing material, and provides a high-performance pervious concrete cementing agent formula and a preparation technology thereof through optimizing the proportion.
Disclosure of Invention
The invention aims to provide a salt-frost-resistant, wear-resistant, high-strength and high-performance pervious concrete cementing agent and a preparation method thereof, aiming at the defects of the prior art.
The high-performance pervious concrete cementing agent comprises magnesium ammonium phosphate cement, magnesium potassium phosphate cement and B2O3The fiber and the pigment comprise the following components in parts by weight:
in the technical scheme, the magnesium ammonium phosphate cement is prepared from magnesium oxide and ammonium phosphateSalt composition. The potassium magnesium phosphate cement is composed of magnesium oxide and potassium phosphate. B is2O3Introduced in the form of boric acid or a borate. The fiber is polypropylene fiber. The pigment is inorganic pigment such as natural mineral or metal oxide.
The preparation method of the high-performance pervious concrete cementing agent comprises the following steps: weighing 50-90 parts of magnesium ammonium phosphate cement, 10-50 parts of magnesium potassium phosphate cement and 2-15 parts of B according to mass2O3Mixing the boric acid or borate, 1-5 parts of fiber and 1-3 parts of pigment in a mixer for 10-30 minutes to obtain a finished product.
The application of the high-performance pervious concrete cementing agent is characterized in that after the cementing agent and the stones are uniformly mixed, water is added for stirring for 2-3 minutes at one time, the mass ratio of the water consumption to the cementing agent is 0.10-0.15, pervious concrete is obtained, a base layer does not need to be wetted by sprinkling water before pouring, and after pouring, watering, moisture retention and heating maintenance are not needed, so that traffic can be opened within 1-5 hours.
The method for preparing the high-performance pervious concrete by adopting the cementing agent and the construction process thereof are as follows:
① the cementing agent of the invention is mixed with the stone evenly, then the high performance pervious concrete can be obtained by adding water once and stirring for 2-3 minutes, the water-cement ratio (water consumption and cementing agent mass ratio) is preferably 0.10-0.15, and a forced mixer is preferably used for stirring;
② before pouring, the base layer is not wetted by sprinkling water, after the base layer is cleaned, the mixed pervious concrete is directly paved;
③ the pervious concrete mixture after being lightly vibrated and paved by a flat vibrator is not suitable for strong vibration or tamping;
④ compacting and flattening with solid steel tube or light roller;
⑤ after construction, no special maintenance is needed, and traffic can be opened within 1-5 h.
The high-performance pervious concrete prepared by the cementing agent has the following advantages and use effects:
① has high strength and can open traffic rapidly;
② has high bonding strength with the base material;
③ very excellent freezing and salt-stripping resistance;
④ good resistance to stress fatigue;
⑤ has good volume stability, small drying shrinkage and good durability.
Detailed Description
Example 1
Example 2
Example 3
As can be seen from Table 1, compared with the common pervious concrete material, the pervious concrete prepared by the cementing agent of the invention has obviously better comprehensive performance, not only has higher strength, but also has good pervious effect, and simultaneously, the wear resistance and the freezing resistance are obviously better than those of the common pervious concrete.
The performance of the pervious concrete can be obviously improved by optimizing the material proportion, the strength of the pervious concrete can be improved by reducing the water-cement ratio, properly increasing the fiber mixing amount and reasonably reducing the stone consumption, and meanwhile, the frost resistance and the wear resistance of the concrete are correspondingly improved; by increasing B2O3The dosage of the permeable concrete can improve the operable time of the permeable concrete; by adjusting the proportion of the magnesium ammonium phosphate cement to the magnesium potassium phosphate cement, the excellent frost resistance of the pervious concrete can be ensured, and the pervious concrete also has good water resistance; therefore, the mix proportion of the pervious concrete with the optimal cost performance can be selected according to the design requirements and the field conditions of the pervious concrete.
TABLE 1 comparison of the properties of pervious concrete in different proportions
① contrast sample is common pervious concrete, and common Portland cement is adopted as cementing material;
② frost resistance is the compressive strength loss rate after 25 freeze-thaw cycles;
③ the strength data for the control was 28 day flexural (crush) strength and the strength data for example 1, example 2 and example 3 was 7 day flexural (crush) strength.
Claims (5)
1. The high-performance pervious concrete cementing agent is characterized by comprising magnesium ammonium phosphate cement, magnesium potassium phosphate cement and B2O3The polypropylene fiber and the pigment are composed of the following components in parts by mass:
80 parts of magnesium ammonium phosphate cement
20 portions of magnesium potassium phosphate cement
B2O33 portions of
2 parts of polypropylene fiber
Pigment 1 part
When in use, 300 parts of stones and 10 parts of water are added.
2. The high performance pervious concrete cement of claim 1, wherein said magnesium ammonium phosphate cement is comprised of magnesium oxide and ammonium phosphate salt.
3. The high performance pervious concrete cement of claim 1, wherein said potassium magnesium phosphate cement is comprised of magnesium oxide and potassium phosphate salt.
4. The high performance pervious concrete cementitious composition of claim 1, wherein B is2O3Introduced in the form of boric acid or a borate.
5. Preparation of a compound according to any one of claims 1 to 4The method for preparing the high-performance pervious concrete cementing agent is characterized in that 80 parts of magnesium ammonium phosphate cement, 20 parts of magnesium potassium phosphate cement and 3 parts of B2O3Mixing the boric acid or borate, 2 parts of polypropylene fiber and 1 part of pigment in a mixer for 10-30 minutes to prepare a finished product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611050820.7A CN106630921B (en) | 2016-11-24 | 2016-11-24 | High-performance pervious concrete cementing agent and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611050820.7A CN106630921B (en) | 2016-11-24 | 2016-11-24 | High-performance pervious concrete cementing agent and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106630921A CN106630921A (en) | 2017-05-10 |
| CN106630921B true CN106630921B (en) | 2020-04-24 |
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| CN201611050820.7A Active CN106630921B (en) | 2016-11-24 | 2016-11-24 | High-performance pervious concrete cementing agent and preparation method thereof |
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| CN107162562A (en) * | 2017-06-22 | 2017-09-15 | 同济大学 | A kind of subway tunnel concrete rapid restoring material and its preparation method and application |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105601248A (en) * | 2015-12-24 | 2016-05-25 | 杭州修路人科技有限公司 | Material for assembled simply supported hollow plate bridge hinge joint and application method of material |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105601248A (en) * | 2015-12-24 | 2016-05-25 | 杭州修路人科技有限公司 | Material for assembled simply supported hollow plate bridge hinge joint and application method of material |
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| CN106630921A (en) | 2017-05-10 |
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