CN111908883A - Composite binder and permeable surface layer coated particles and permeable material prepared from same - Google Patents
Composite binder and permeable surface layer coated particles and permeable material prepared from same Download PDFInfo
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- CN111908883A CN111908883A CN202010759193.4A CN202010759193A CN111908883A CN 111908883 A CN111908883 A CN 111908883A CN 202010759193 A CN202010759193 A CN 202010759193A CN 111908883 A CN111908883 A CN 111908883A
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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
- C04B28/24—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 alkyl, ammonium or metal silicates; containing silica sols
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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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- 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
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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
- C04B2111/00008—Obtaining or using nanotechnology related materials
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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
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/00612—Uses not provided for elsewhere in C04B2111/00 as one or more layers of a layered structure
Abstract
The invention relates to a composite binder and permeable surface layer coated particles and a permeable material prepared from the composite binder, and belongs to the field of municipal road engineering. The composite binder is prepared from the following raw materials in parts by weight: 0.5-5 parts of particle modified resin adhesive and 3-15 parts of modified cement particle cement. The permeable brick produced by the composite binder can solve the problems of thick pores and unattractive appearance of the existing cement permeable brick and ceramic particle permeable brick, and also solves the problems of wear resistance and poor aging resistance of the resin-bonded permeable brick.
Description
Technical Field
The invention relates to a composite binder and permeable surface layer coated particles and a permeable material prepared from the composite binder, belongs to the field of municipal road engineering, and is particularly suitable for sponge city construction and the field of construction.
Background
With the development of municipal pavement technology, particularly the popularization of sponge city construction in China this year, water permeable pavement materials of various materials, such as ceramic water permeable bricks, cement water permeable bricks, resin bonded water permeable bricks and the like, appear. The ceramic brick and the cement brick that permeates water rely on the macropore between thick granule material to realize permeating water, and the hole is big more, and the rate of permeating water is faster, nevertheless goes out the condition that the hole is blockked up by mud and dust and loses the effect of permeating water easily, and the surface granule is thick, and is not pleasing to the eye enough. The resin water permeable brick is characterized in that fine sand grains are bonded by organic binder materials such as resin to form fine pores for water permeability, so that the problem that the large pore water permeable surface is not fine and beautiful is solved, but the water permeable brick has the problems of poor aging resistance, poor wear resistance and the like.
Disclosure of Invention
The invention aims to solve the technical problems and provides a composite binder, and permeable surface layer coated particles and a permeable material prepared from the composite binder.
The technical scheme for solving the technical problems is as follows: a composite binder is prepared from the following raw materials in parts by weight:
0.5-5 parts of particle modified resin adhesive and 3-15 parts of modified cement particle cement;
the particle modified resin adhesive is prepared from the following raw materials in parts by weight: 60-82.5 parts of resin, 16.5-20 parts of curing agent and nano SiO21-8 parts of coupling agent, 1-10 parts of fiber, 0-7 parts of talcum powder, 0-3 parts of pigment and 0-10 parts of defoaming agent;
the modified cement particle cement is prepared from the following raw materials in parts by weight: 82-88 parts of cement, 0-5 parts of fly ash, 0-15 parts of VAE emulsion, 0-18 parts of silica sol, 0-1 part of water reducing agent, 0-3 parts of bentonite, 0-5 parts of pigment and 0.1-3 parts of water.
The composite binder has the beneficial effects that:
compared with the prior art, the composite adhesive is an organic-inorganic composite adhesive, and the water permeable brick prepared by using the composite adhesive has the advantages of good glossiness, good wear resistance, good water permeability and good color retention.
The inorganic and organic bonds in the composite binder provide proper viscosity for surface layer particles, so that the composite binder is more beneficial to pressing, can be pressed by a press, and can also be directly pressed by a compacting machine on a pavement construction site.
On the basis of the technical scheme, the invention can be further improved as follows.
Further, the resin is one of epoxy resin, a mixture of epoxy resin and polyurethane resin, a mixture of epoxy resin and acrylic resin, or a mixture of epoxy resin, polyurethane resin and acrylic resin.
Further, the curing agent is one or more of aliphatic amine curing agents, alicyclic polyamine curing agents and imidazole curing agents in low molecular weight polyamide curing agents.
Further, the coupling agent is one of a silane coupling agent, a titanate coupling agent or a phosphate coupling agent.
Further, the fiber is one of glass fiber, carbon fiber, polypropylene fiber, polyamide fiber and polyester fiber, and the fiber length is 0.1-800 micrometers.
Further, the pigment is an organic pigment, an inorganic pigment, graphene or graphene oxide.
Further, the defoaming agent is any one of a polyether defoaming agent and an organic silicon defoaming agent.
Further, the cement is one of portland cement and ordinary portland cement.
Further, the water reducing agent is a polycarboxylic acid water reducing agent.
The invention also provides a permeable surface layer coated particle which is formed by pressing the coarse sand particles bonded by the composite binder. The water permeable surface layer coated particles are prepared from the following raw materials in parts by weight: 0.5-5 parts of particle modified resin adhesive, 3-15 parts of modified cement particle cement and 80-96.5 parts of medium coarse sand particles.
The water permeable surface layer coated particle has the beneficial effects that:
the water permeable surface layer coated particles can be used for preparing prefabricated water permeable bricks and field on-site water permeable pavements, finished water permeable bricks and water permeable pavements are beautiful in color, the surface layers are fine and smooth, water permeability is good, aging resistance is good, and the water permeable surface layer coated particles with different colors can be mixed to prepare stone-like water permeable bricks or stone-like water permeable pavements.
On the basis of the technical scheme, the invention can be further improved as follows.
Further, the medium coarse sand particles are one of natural quartz stone, slag particles, machine-made sand and hard volcanic rock particles, and the particle size range is 0.075mm-8 mm.
The invention also provides a preparation method of the water permeable surface layer coated particles, which comprises the following steps:
1) preparation of particle-modified resin adhesive
1.1) preparation of modified Nano SiO2Solutions of
Mixing nano SiO2Adding into coupling agent, heating to 70-90 deg.C, stirring to react for 20-40 min, and cooling;
1.2) preparation of modified epoxy composite liquid
Heating the resin to 50-70 ℃, adding the fiber, the defoamer, the pigment and the talcum powder, and stirring for reaction for 10-20 min;
1.3) modifying the nano SiO2Adding the solution into the modified epoxy composite liquid, heating to 60-90 ℃, stirring for reaction for 0.5-1 h, then cooling to 20-30 ℃, adding a curing agent, and continuing stirring for 2-3 min to form a particle modified resin adhesive;
2) preparation of modified Cement particle Cement mortar
Taking cement, fly ash and bentonite, stirring uniformly, adding VAE emulsion, a water reducing agent, silica sol, pigment and water, and continuously stirring uniformly to form modified cement particle cement;
3) preparation of water permeable surface layer coated particles
And adding the medium coarse sand particles into the modified cement particle cement, uniformly stirring, adding the particle modified resin adhesive, and continuously stirring until the medium coarse sand particles are completely and uniformly coated to form the permeable surface layer coated particles.
The invention also provides a permeable material which comprises the permeable surface layer coated particles.
On the basis of the technical scheme, the invention can be further improved as follows.
Further, the water permeable material comprises any one of a water permeable brick, a water permeable pavement and a water permeable drainage plate.
The invention also provides a water permeable brick, and the water permeable surface layer coated particles are spread on the water permeable base material particles and pressed to obtain the water permeable brick. The permeable brick surface layer is formed by bonding inorganic and organic composite binders, so that the permeable surface layer coated particles have the characteristics of good wear resistance, good hydrophilicity and good aging resistance of the inorganic binders. Meanwhile, the addition of the organic binder provides toughness and glossiness for the permeable surface layer coating particles, and reduces the alkali return phenomenon of the brick surface.
The invention also provides a permeable pavement, the permeable surface layer coated particles are spread on a permeable concrete base layer of the pavement, compacted through a compacting machine, and maintained for more than 7-28 days, so that the permeable pavement is obtained.
Drawings
FIG. 1 is a photograph of a water permeable brick prepared in example 1 of the present invention;
FIG. 2 is a photograph of a water permeable brick prepared in example 2 of the present invention.
Detailed Description
The principles and features of this invention are described below in conjunction with the following drawings, which are set forth by way of illustration only and are not intended to limit the scope of the invention.
The sources of the raw materials used in the following examples and comparative examples are as follows:
epoxy resins E51, E44 were purchased from the petroleum-produced products of holy;
epoxy 593 was purchased from a product obtained from the petroleum production of holy;
the silane coupling agent KH560 is available from a product produced by Shanyi plastication Co., Ltd, Dongguan;
the VAE emulsion was purchased from a product manufactured by petrochemical company Limited in Oriental Peking;
polyurethane resin was purchased from competitive resins, Inc. of Dongguan city;
curing agent polyamide resin 650 was purchased from a product obtained from the petrochemical production of holy;
the polyether defoamer is purchased from Jiangsu Haian petrochemical plants;
the polycarboxylic acid high-efficiency water reducing agent is purchased from Jiangsu Haian petrochemical plants.
Example 1
A preparation method of the water permeable brick comprises the following steps:
1) preparation of particle-modified resin adhesive
1.1) weighing the following raw materials in parts by weight
Epoxy resin E4475 parts; 65016.5 parts of curing agent polyamide resin; nano SiO21 part; 5601 parts of a silane coupling agent KH; 0.5 part of glass fiber (the fiber length is 300 microns); 2 parts of talcum powder; 1.5 parts of iron oxide red and 2.5 parts of polyether defoamer.
1.2) preparation of modified Nano SiO2Solutions of
Mixing nano SiO2Adding the powder into a silane coupling agent KH560, heating to 80 ℃, stirring for reaction for 30min, and cooling for later use;
1.3) preparation of modified epoxy Complex liquid
And heating the epoxy resin E44 to 60 ℃, adding the glass fiber, the polyether defoamer, the iron oxide red and the talcum powder, and stirring to react for 15min to finish the reaction.
1.4) modifying the nano SiO2Adding the solution into the modified epoxy composite liquid, heating to 80 ℃, stirring for reaction for 0.5h, then cooling to 25 ℃, adding the curing agent polyamide resin 650, continuing stirring for 3min to form the particle modified resin adhesive, and cooling for later use.
2) Preparation of modified Cement particle Cement mortar
Weighing the following raw materials in parts by weight: 82 parts of 42.5 ordinary portland cement, 15 parts of VAE emulsion, 1 part of silica sol, 0.5 part of polycarboxylic acid high-efficiency water reducing agent, 0.5 part of bentonite, 1 part of iron red pigment and 2 parts of water.
Adding the cement and the bentonite into a stirrer, uniformly stirring, then adding the VAE emulsion, the water reducing agent, the silica sol, the iron oxide red and the water, and continuously uniformly stirring to obtain the modified cement particle cement.
3) Preparation of water permeable surface layer coated particles
Adding the natural quartz sand particles with the particle size of 0.5mm-1mm into the modified cement particle cement, fully and uniformly stirring, then adding the particle modified resin adhesive, and continuously stirring until the natural quartz sand particles are completely and uniformly wrapped, thereby forming the permeable surface layer coated particles.
The mass usage relationship among the particle modified resin adhesive, the modified cement particle cement and the natural quartz sand particles is 2:10: 88.
4) Preparation of water permeable brick
The inorganic-organic composite binder permeable brick is manufactured, the permeable brick is divided into an upper layer and a lower layer, the upper part is a compact permeable surface layer formed by bonding quartz sand particles with the composite binder, and the lower part is permeable concrete.
The pervious concrete is prepared from the following raw materials in parts by weight: 4 parts of 3-5mm graded broken stone, 1 part of 42.5 Portland cement, 0.1 part of polycarboxylic acid high-efficiency water reducing agent and 0.3 part of water;
the preparation method of the pervious concrete comprises the following steps: uniformly mixing 3-5mm graded broken stone, 42.5 mm portland cement, a polycarboxylic acid high-efficiency water reducing agent and water to form a pervious concrete mixture.
Putting the mixed pervious concrete material into a mold, pre-pressing the pervious concrete material on a press, uniformly spreading the pervious surface layer coated particles on a pervious concrete base material, forming the pervious surface layer coated particles by the press, and curing the pervious surface layer coated particles in a curing kiln at the temperature of 25 ℃ and the humidity of 70% for 7 days to obtain the pervious brick with bright orange color, good wear resistance and good water permeability efficiency, which is specifically shown in figure 1. As can be seen from the figure, the permeable brick has fine and beautiful permeable pores on the surface, and solves the problem that the large-pore permeable surfaces of the ceramic permeable brick and the cement permeable brick are not fine.
The water permeability coefficient of the water permeable brick is measured to be 4.0 x 10 according to the related national standard (GB/T25993--2cm/s, not less than 2.0 x 10 far greater than national standard A-grade product standard-2cm/s。
The water permeable brick is obtained by carrying out a wear resistance test according to the relevant national standard (GB/T12988), and the length of the grinding pit of the water permeable brick is less than 30mm and is not more than 35mm higher than that of the grinding pit of the national standard.
Example 2
A preparation method of the water permeable brick comprises the following steps:
1) preparation of particle modified composite adhesive
1.1) weighing the following raw materials in parts by weight
Epoxy resin E5160 parts; epoxy resin E4416 parts; 20 parts of epoxy resin 593 curing agent;nano SiO28 parts of a mixture; 5605 parts of a silane coupling agent KH; 5 parts of talcum powder; 0.2 part of graphene and 5 parts of a polyether defoaming agent.
1.2) preparation of modified Nano SiO2Solutions of
Mixing nano SiO2Adding the powder into a silane coupling agent KH560, heating to 80 ℃, stirring for reaction for 30min, and cooling for later use;
1.3) preparation of modified epoxy Complex liquid
Heating epoxy resin E51 and E44 to 60 ℃ for full mixing, adding a polyether defoamer, graphene and talcum powder, stirring and reacting for 15min to obtain the epoxy resin.
1.4) modifying the nano SiO2Adding the solution into the modified epoxy composite liquid, heating to 80 ℃, stirring for reaction for 0.5h, then cooling to 30 ℃, adding the epoxy resin 593 curing agent, continuing stirring for 2min to form the particle modified resin adhesive, and cooling for later use.
2) Preparation of modified Cement particle Cement mortar
Weighing the following raw materials in parts by weight: 88 parts of 42.5 ordinary portland cement, 5 parts of fly ash, 1 part of VAE emulsion, 18 parts of silica sol, 1 part of polycarboxylic acid high-efficiency water reducing agent, 3 parts of bentonite and 3 parts of water.
Adding cement and bentonite into a stirrer, uniformly stirring, then adding VAE emulsion, polycarboxylic acid high-efficiency water reducing agent, silica sol and water, and continuously uniformly stirring to obtain the modified cement particle cement.
3) Preparation of water permeable surface layer coated particles
Adding natural quartz sand particles with the particle size of 0.5mm-1mm into the modified cement particle cement, fully and uniformly stirring, then adding the particle modified resin adhesive, and continuously stirring until the natural quartz sand particles are completely and uniformly wrapped to form water permeable surface layer coated particles;
the mass usage relationship among the particle modified resin adhesive, the modified cement particle cement and the natural quartz sand particles is 0.5:15: 80.
4) Preparation of water permeable brick
The inorganic-organic composite binder permeable brick is manufactured, the permeable brick is divided into an upper layer and a lower layer, the upper part is a compact permeable surface layer formed by bonding natural quartz sand particles with the composite binder, and the lower part is permeable concrete.
The pervious concrete is prepared from the following raw materials in parts by weight: 4 parts of 3-5mm graded broken stone, 1 part of 42.5 Portland cement, 0.1 part of polycarboxylic acid high-efficiency water reducing agent and 0.3 part of water;
the preparation method of the pervious concrete comprises the following steps: uniformly mixing 3-5mm graded broken stone, 42.5 mm portland cement, a polycarboxylic acid high-efficiency water reducing agent and water to form a pervious concrete mixture.
Putting the mixed pervious concrete material into a mold, prepressing on a press, uniformly spreading the pervious surface layer coated particles on a pervious concrete base material, forming by the press, and curing in a curing kiln with the temperature of 25 ℃ and the humidity of 70% for 7 days to obtain the pervious brick with uniform gray color, good wear resistance and good water permeability efficiency, which is specifically shown in figure 2. As can be seen from the figure, the permeable brick has fine and beautiful permeable pores on the surface, and solves the problem that the large-pore permeable surfaces of the ceramic permeable brick and the cement permeable brick are not fine.
The water permeability coefficient of the water permeable brick is measured to be 4.1 x 10 according to the related national standard (GB/T25993--2cm/s, not less than 2.0 x 10 far greater than national standard A-grade product standard-2cm/s。
The water permeable brick is obtained by carrying out a wear resistance test according to the relevant national standard (GB/T12988), and the length of a grinding pit of the water permeable brick is 29mm, which is superior to the length of a grinding pit of the national standard and is not more than 35 mm.
Example 3
A method for preparing a permeable pavement comprises the following steps:
1) preparation of particle-modified resin adhesive
1.1) weighing the following raw materials in parts by weight
Epoxy resin E4450 parts; 10 parts of polyurethane resin; 65016.5 parts of curing agent polyamide resin; nano SiO23 parts of a mixture; 56010 parts of a silane coupling agent KH; 5 parts of talcum powder; 1.5 parts of red acrylic pigment and 10 parts of polyether defoamer.
1.2) preparation of modified Nano SiO2Solutions of
Mixing the nanometerSiO2Adding the powder into a silane coupling agent KH560, heating to 80 ℃, stirring for reaction for 30min, and cooling for later use;
1.3) preparation of modified epoxy Complex liquid
Heating epoxy resin E44 and polyurethane resin to 60 ℃, adding a polyether defoamer, red acrylic pigment and talcum powder, and stirring to react for 15min to finish the preparation.
1.4) modifying the nano SiO2Adding the solution into the modified epoxy composite liquid, heating to 80 ℃, stirring for reaction for 0.5h, then cooling to 30 ℃, adding the curing agent polyamide resin 650, continuing stirring for 2min to form the particle modified resin adhesive, and cooling for later use.
2) Preparation of modified Cement particle Cement mortar
Weighing the following raw materials in parts by weight: 42.5 parts of ordinary portland cement 85 parts, VAE emulsion 10 parts, silica sol 10 parts, polycarboxylic acid high-efficiency water reducing agent 2 parts and water 2 parts.
Adding cement and bentonite into a stirrer, uniformly stirring, then adding VAE emulsion, polycarboxylic acid high-efficiency water reducing agent, silica sol and water, and continuously uniformly stirring to obtain the modified cement particle cement.
3) Preparation of water permeable surface layer coated particles
Adding natural quartz sand particles with the particle size of 0.5mm-1mm into the modified cement particle cement, fully and uniformly stirring, then adding the particle modified resin adhesive, and continuously stirring until the natural quartz sand particles are completely and uniformly wrapped to form water permeable surface layer coated particles;
the mass usage relationship among the particle modified resin adhesive, the modified cement particle cement and the natural quartz sand particles is 5:3: 96.5.
4) Preparation of permeable pavement
The permeable pavement is manufactured and divided into an upper layer and a lower layer, the upper part is a compact permeable surface layer formed by bonding quartz sand particles with the composite binder, and the lower part is permeable concrete.
The pervious concrete is prepared from the following raw materials in parts by weight: 4 parts of 3-5mm graded broken stone, 1 part of 42.5 Portland cement, 0.1 part of polycarboxylic acid high-efficiency water reducing agent and 0.3 part of water;
the preparation method of the pervious concrete comprises the following steps: uniformly mixing 3-5mm graded broken stone, 42.5 mm portland cement, a polycarboxylic acid high-efficiency water reducing agent and water to form a pervious concrete mixture.
And putting the mixed pervious concrete material on a compacted plain soil foundation, compacting to form a pervious base layer, uniformly spreading the pervious surface layer coated particles on the pervious concrete base layer, rolling and compacting, and then covering and maintaining (the outdoor average temperature is 25 ℃) for 7 days to obtain a red pervious pavement with good wear resistance and good water permeability efficiency.
The water permeability coefficient of the permeable pavement is measured to be 3.2 x 10 according to the related national standard (GB/T25993--2cm/s, not less than 2.0 x 10 far greater than national standard A-grade product standard-2cm/s。
The water permeable brick is obtained by carrying out a wear resistance test according to the relevant national standard (GB/T12988), and the length of a grinding pit of the water permeable brick is 28mm, which is superior to the length of a grinding pit of the national standard and is not more than 35 mm.
Example 4
A method for preparing a permeable pavement comprises the following steps:
1) preparation of particle-modified resin adhesive
1.1) weighing the following raw materials in parts by weight
Epoxy resin E5180 parts; 59317 parts of curing agent epoxy resin and 6503 parts of curing agent polyamide resin; nano SiO23 parts of a mixture; 56010 parts of a silane coupling agent KH; 5 parts of talcum powder; 2.5 parts of iron oxide red; and 10 parts of a polyether defoaming agent.
1.2) preparation of modified Nano SiO2Solutions of
Mixing nano SiO2Adding the powder into a silane coupling agent KH560, heating to 80 ℃, stirring for reaction for 30min, and cooling for later use;
1.3) preparation of modified epoxy Complex liquid
And heating the epoxy resin E51 to 60 ℃, adding the polyether defoamer, the iron oxide red and the talcum powder, and stirring to react for 15min to finish the reaction.
1.4) modifying the nano SiO2Adding the solution into the modified epoxy composite liquid, heating to 80 ℃, stirring for reaction for 0.5h, and then coolingHeating to 25 deg.C, adding curing agent epoxy resin 593 and curing agent polyamide resin 650, stirring for 3min to form particle modified resin adhesive, and cooling.
2) Preparation of modified Cement particle Cement mortar
Weighing the following raw materials in parts by weight: 85 parts of 42.5 ordinary portland cement, 10 parts of VAE emulsion, 10 parts of silica sol, 2 parts of polycarboxylic acid high-efficiency water reducing agent, 0.5 part of iron oxide red pigment and 2 parts of water.
Adding cement and bentonite into a stirrer, uniformly stirring, then adding VAE emulsion, polycarboxylic acid high-efficiency water reducing agent, silica sol, iron oxide red and water, and continuously uniformly stirring to obtain the modified cement particle cement.
3) Preparation of water permeable surface layer coated particles
Adding natural quartz sand particles with the particle size of 0.5mm-1mm into the modified cement particle cement, fully and uniformly stirring, then adding the particle modified resin adhesive, and continuously stirring until the natural quartz sand particles are completely and uniformly wrapped to form water permeable surface layer coated particles;
the mass usage relationship among the particle modified resin adhesive, the modified cement particle cement and the natural quartz sand particles is 4:3: 85.
4) Preparation of permeable pavement
The permeable pavement is manufactured and divided into an upper layer and a lower layer, the upper part is a compact permeable surface layer formed by bonding natural quartz sand particles with the composite binder, and the lower part is permeable concrete.
The pervious concrete is prepared from the following raw materials in parts by weight: 4 parts of 3-5mm graded broken stone, 1 part of 42.5 Portland cement, 0.1 part of polycarboxylic acid high-efficiency water reducing agent and 0.3 part of water;
the preparation method of the pervious concrete comprises the following steps: uniformly mixing 3-5mm graded broken stone, 42.5 mm portland cement, a polycarboxylic acid high-efficiency water reducing agent and water to form a pervious concrete mixture.
And putting the mixed pervious concrete material on a compacted plain soil foundation, compacting to form a pervious base layer, uniformly spreading the pervious surface layer coated particles on the pervious concrete base layer, rolling and compacting, and then covering and maintaining (the outdoor average temperature is 25 ℃) for 7 days to obtain a red pervious pavement with good wear resistance and good water permeability efficiency.
The water permeability coefficient of the permeable pavement is measured to be 4.5 x 10 according to the related national standard (GB/T25993--2cm/s, not less than 2.0 x 10 far greater than national standard A-grade product standard-2cm/s。
The water permeable brick is obtained by carrying out a wear resistance test according to the relevant national standard (GB/T12988), and the length of a grinding pit of the water permeable brick is 31mm, which is superior to the length of a grinding pit of the national standard and is not more than 35 mm.
Comparative example 1
A method for preparing a permeable pavement comprises the following steps:
1) preparation of particle-modified resin adhesive
1.1) weighing the following raw materials in parts by weight
Epoxy resin E5183 parts; 25 parts of epoxy resin 593 curing agent; nano SiO23 parts of a mixture; 56010 parts of a silane coupling agent KH; 5 parts of talcum powder; 1.5 parts of iron oxide red and 10 parts of polyether defoamer.
1.2) preparation of modified Nano SiO2Solutions of
Mixing nano SiO2Adding the powder into a silane coupling agent KH560, heating to 80 ℃, stirring for reaction for 30min, and cooling for later use;
1.3) preparation of modified epoxy Complex liquid
And heating the epoxy resin E51 to 60 ℃, adding the polyether defoamer, the iron oxide red and the talcum powder, and stirring to react for 15min to finish the reaction.
1.4) modifying the nano SiO2Adding the solution into the modified epoxy composite liquid, heating to 80 ℃, stirring for reaction for 0.5h, then cooling to 30 ℃, adding the epoxy resin 593 curing agent, continuing stirring for 2min to form the particle modified resin adhesive, and cooling for later use.
2) Preparation of modified Cement particle Cement mortar
Weighing the following raw materials in parts by weight: 42.5 parts of ordinary portland cement 85 parts, VAE emulsion 10 parts, silica sol 10 parts, polycarboxylic acid high-efficiency water reducing agent 2 parts and water 2 parts.
Adding cement and bentonite into a stirrer, uniformly stirring, then adding VAE emulsion, polycarboxylic acid high-efficiency water reducing agent, silica sol and water, and continuously uniformly stirring to obtain the modified cement particle cement.
3) Preparation of water permeable surface layer coated particles
Adding the natural quartz sand particles with the particle size of 0.5mm-1mm into the modified cement particle cement, fully and uniformly stirring, then adding the particle modified resin adhesive, and continuously stirring until the natural quartz sand particles are completely and uniformly wrapped, thereby forming the permeable fabric coated particles. The mass usage relationship among the particle modified resin adhesive, the modified cement particle cement and the natural quartz sand particles is 6:14: 80.
4) Preparation of permeable pavement
And manufacturing a permeable pavement, wherein the permeable pavement is divided into an upper layer and a lower layer, the upper part is a compact permeable surface layer formed by bonding natural quartz sand particles with a composite binder, and the lower part is permeable concrete.
The pervious concrete is prepared from the following raw materials in parts by weight: 4 parts of 3-5mm graded broken stone, 1 part of 42.5 Portland cement, 0.1 part of polycarboxylic acid high-efficiency water reducing agent and 0.3 part of water;
the preparation method of the pervious concrete comprises the following steps: uniformly mixing 3-5mm graded broken stone, 42.5 mm portland cement, a polycarboxylic acid high-efficiency water reducing agent and water to form a pervious concrete mixture.
And putting the mixed pervious concrete material on a compacted plain soil base, compacting to form a pervious base layer, uniformly spreading the coated particles on the pervious concrete base layer, and rolling and compacting to perform covering maintenance (the outdoor average temperature is 25 ℃) for 7 days to obtain a red pervious road surface with poor water permeability efficiency.
The water permeability coefficient of the permeable pavement is measured to be 0.8 x 10 according to the related national standard (GB/T25993--2cm/s, not less than 2.0 x 10 of B-grade product standard not meeting national standard-2The requirement of cm/s.
The above examples show that the composite binder is an organic-inorganic composite binder material, and when the composite binder is applied to the production of the water permeable brick, the problems of large pores and unattractive appearance of the existing cement water permeable brick and ceramic particle water permeable brick can be solved, and the problems of poor wear resistance and poor aging resistance of the resin bonded water permeable brick can be solved.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (9)
1. The composite binder is characterized by being prepared from the following raw materials in parts by weight:
0.5-5 parts of particle modified resin adhesive and 3-15 parts of modified cement particle cement;
the particle modified resin adhesive is prepared from the following raw materials in parts by weight: 60-82.5 parts of resin, 16.5-20 parts of curing agent and nano SiO21-8 parts of coupling agent, 1-10 parts of fiber, 0-7 parts of talcum powder, 0-3 parts of pigment and 0-10 parts of defoaming agent;
the modified cement particle cement is prepared from the following raw materials in parts by weight: 82-88 parts of cement, 0-5 parts of fly ash, 0-15 parts of VAE emulsion, 0-18 parts of silica sol, 0-1 part of water reducing agent, 0-3 parts of bentonite, 0-5 parts of pigment and 0.1-3 parts of water.
2. The composite binder of claim 1,
the resin is one of epoxy resin, a mixture of epoxy resin and polyurethane resin, a mixture of epoxy resin and acrylic resin or a mixture of epoxy resin, polyurethane resin and acrylic resin;
the curing agent is one or more of aliphatic amine curing agent, alicyclic polyamine curing agent and imidazole curing agent in low molecular polyamide curing agent;
the coupling agent is one of silane coupling agent, titanate coupling agent or phosphate coupling agent;
the fiber is one of glass fiber, carbon fiber, polypropylene fiber, polyamide fiber and polyester fiber, and the length of the fiber is 0.1-800 microns;
the pigment is organic pigment, inorganic pigment, graphene or graphene oxide;
the defoaming agent is any one of a polyether defoaming agent and an organic silicon defoaming agent;
the cement is one of Portland cement and ordinary Portland cement;
the water reducing agent is a polycarboxylic acid water reducing agent.
3. A water permeable facing layer coated particle, which is prepared by pressing the coarse sand particles in the composite binder as claimed in any one of claims 1 or 2, wherein the water permeable facing layer coated particle is prepared from the following raw materials in parts by weight: 0.5-5 parts of particle modified resin adhesive, 3-15 parts of modified cement particle cement and 80-96.5 parts of medium coarse sand particles.
4. The water permeable facing layer coated particle of claim 3, wherein the medium coarse sand particle is one of natural quartz stone, slag particle, machine-made sand and hard volcanic rock particle, and the particle size is in the range of 0.075mm-8 mm.
5. A method for preparing the water permeable surface layer coated particles according to any one of claims 3 to 4, which comprises:
1) preparation of particle-modified resin adhesive
1.1) preparation of modified Nano SiO2Solutions of
Mixing nano SiO2Adding into coupling agent, heating to 70-90 deg.C, stirring to react for 20-40 min, and cooling;
1.2) preparation of modified epoxy composite liquid
Heating the resin to 50-70 ℃, adding the fiber, the defoamer, the pigment and the talcum powder, and stirring for reaction for 10-20 min;
1.3) modifying the nano SiO2Adding the solution into the modified epoxy composite liquid, heating to 60-90 ℃, stirring for reaction for 0.5-1 h, then cooling to 20-30 ℃, adding a curing agent, and continuing stirring for 2-3 min to form a particle modified resin adhesive;
2) preparation of modified Cement particle Cement mortar
Taking cement, fly ash and bentonite, stirring uniformly, adding VAE emulsion, a water reducing agent, silica sol, pigment and water, and continuously stirring uniformly to form modified cement particle cement;
3) preparation of water permeable surface layer coated particles
And adding the medium coarse sand particles into the modified cement particle cement, uniformly stirring, adding the particle modified resin adhesive, and continuously stirring until the medium coarse sand particles are completely and uniformly coated to form the permeable surface layer coated particles.
6. A water permeable material comprising the water permeable facing layer coated particles of any one of claims 3 or 4.
7. The water permeable material of claim 6, wherein the water permeable material comprises any one of water permeable bricks, water permeable pavements and water permeable drainage sheets.
8. A water permeable brick, characterized in that the water permeable surface layer coated particles of any one of claims 3 or 4 are spread on the water permeable base material particles and pressed to obtain the water permeable brick.
9. A permeable pavement, characterized in that the permeable surface layer coated particles of any one of claims 3 or 4 are spread on a permeable concrete base layer of the pavement, compacted through a compacting machine, and then maintained for 7-28 days, so as to obtain the permeable pavement.
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