CN113981764A - Construction method of pervious concrete pavement engineering - Google Patents
Construction method of pervious concrete pavement engineering Download PDFInfo
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- CN113981764A CN113981764A CN202111264544.5A CN202111264544A CN113981764A CN 113981764 A CN113981764 A CN 113981764A CN 202111264544 A CN202111264544 A CN 202111264544A CN 113981764 A CN113981764 A CN 113981764A
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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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- 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
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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
- C04B38/00—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
- C04B38/02—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof by adding chemical blowing agents
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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
- C04B38/00—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
- C04B38/10—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof by using foaming agents or by using mechanical means, e.g. adding preformed foam
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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
- E01C19/00—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving
- E01C19/48—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for laying-down the materials and consolidating them, or finishing the surface, e.g. slip forms therefor, forming kerbs or gutters in a continuous operation in situ
- E01C19/4806—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for laying-down the materials and consolidating them, or finishing the surface, e.g. slip forms therefor, forming kerbs or gutters in a continuous operation in situ with solely rollers for consolidating or finishing
- E01C19/4826—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for laying-down the materials and consolidating them, or finishing the surface, e.g. slip forms therefor, forming kerbs or gutters in a continuous operation in situ with solely rollers for consolidating or finishing the materials being aggregate mixed with binders
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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
- C04B2111/40—Porous or lightweight materials
-
- 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
- C04B2201/20—Mortars, concrete or artificial stone characterised by specific physical values for the density
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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
- 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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- Ceramic Engineering (AREA)
- Architecture (AREA)
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- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Road Paving Structures (AREA)
Abstract
The invention belongs to the field of road engineering, in particular to a construction method of a pervious concrete pavement engineering, which aims at the problems of poor water permeability and poor compression resistance and bending resistance of the existing concrete pavement and provides the following scheme, which comprises the following steps: the method comprises the steps of excavating and compacting a roadbed according to design requirements, paving a permeable gravel layer on the compacted roadbed, compacting again, paving moulds on two sides of the roadbed, paving reinforcing ribs between the inside of the moulds and the top of the permeable gravel layer, adding additives into concrete, forming a large number of bubbles inside the concrete by using the additives, forming communicated gaps by the bubbles after the paving is finished, dredging by a high-pressure water gun, increasing the void ratio and the permeability coefficient of the concrete pavement, and enhancing the connection strength between the concrete by using the permeable coagulants, wherein even if the concrete pavement is damaged, the concrete pavement still has strong bending resistance and compression resistance.
Description
Technical Field
The invention relates to the technical field of road engineering, in particular to a construction method of a pervious concrete pavement engineering.
Background
The road surface of the urban road is mainly a concrete road surface at present, the paving mode of the concrete road surface is various, for example, the patent with the application number of CN201910823733.8 discloses a construction method of a pervious concrete municipal road, the embodiment of the invention paves materials by adopting a block partition bin mode through construction, the construction is simple, and the construction on the large-area municipal road is more facilitated.
However, the construction method of the pervious concrete municipal road has some problems, for example, air or gas generating substances are not added into the concrete in the construction process of the concrete road surface, so that the air generated in the concrete laying process is less, the finally formed road surface gap is less, the pervious speed is low, the water permeability is poor, the integrity of the road surface is damaged in the construction process, the adhesion between the concrete is influenced, and the compression resistance and the bending resistance of the road surface are influenced.
Disclosure of Invention
Based on the problems of less air generated inside the concrete laying process, less formed gaps, poor water permeability of the road surface and poor compression resistance and bending resistance of the road surface in the background technology, the invention provides a construction method of the pervious concrete road surface engineering.
The invention provides a construction method of a pervious concrete pavement project, which comprises the following steps:
s1: excavating and compacting the roadbed according to the design requirement, paving a permeable gravel layer on the compacted roadbed, compacting again, paving moulds on two sides of the roadbed, and paving reinforcing ribs between the inner part of the mould and the top of the permeable gravel layer;
s2: weighing a first dressing and a second auxiliary material, wherein the first dressing comprises 10-14 parts of an additive, 5-15 parts of a water permeable coagulant, 3-4 parts of a water reducing agent, 24-28 parts of a modifier and 6-10 parts of rubber particles, the second auxiliary material comprises 11-15 parts of an additive, 10-15 parts of a water permeable coagulant, 3-4 parts of a water reducing agent and 24-28 parts of a modifier, the additive comprises iron powder, aluminum powder, a bubble generating agent, sodium bicarbonate and diisobutyl naphthalene sulfonate, and the water permeable coagulant comprises epoxy polyurethane, epoxy resin, phosphorus-containing polyarylether resin, magnesium chloride, calcium sulfate, cellulose acetate butyrate and water-soluble starch;
s3: pouring the weighed first dressing into first stirring equipment, adding 400 parts of concrete, a proper amount of stone aggregate and water, stirring to prepare bottom concrete, pouring the weighed second dressing into second stirring equipment, adding 400 parts of concrete, a proper amount of stone aggregate and water, stirring to prepare surface concrete, uniformly spreading the bottom concrete in a mold, controlling the loose coefficient to be 1.1, then using a flat troweling machine to perform troweling compaction, uniformly spreading the surface concrete on the top of the bottom concrete before primary setting of the bottom concrete, controlling the loose coefficient to be 1.1, using the flat troweling machine to perform troweling compaction, and then using a road roller to perform pavement compaction, thereby obtaining a semi-finished concrete pavement;
s4: and (5) moisturizing and maintaining the concrete pavement to obtain the finished concrete pavement.
Preferably, in S1, the roadbed substrate is cleaned according to the design requirement in the excavation pressure real-time, and then the substrate is compacted by a road roller, wherein the compaction coefficient is controlled to 95% -99%.
Preferably, in S1, the permeable cushion layer is made of natural macadam, the paving thickness is controlled to be 150 mm-250 mm, the permeable gravel layer is compacted by using road roller equipment, the top of the permeable gravel layer is flattened, and the compaction coefficient is controlled to be 95% -99%.
Preferably, in S2, the additive components are 76% to 80% of iron powder, 6% to 10% of aluminum powder, 10% to 14% of a bubble generating agent, 1% to 4% of sodium bicarbonate and 1% to 3% of sodium diisobutylnaphthalenesulfonate in parts by weight.
Preferably, in S2, the bubble generating agent is one or more of rosin resins, alkyl and alkyl aromatic hydrocarbon sulfonic acids, fatty alcohol sulfonates, saponins, protein salts, and petroleum sulfonic acid.
Preferably, in S2, the specific gravity of the epoxy polyurethane, the epoxy resin, the phosphorus-containing polyarylether resin, the magnesium chloride, the calcium sulfate, the cellulose acetate butyrate and the water-soluble starch is 45:20:15:3:3:4: 10.
Preferably, in S2, the step of producing the water-permeable coagulant is: weighing epoxy polyurethane, epoxy resin, phosphorus-containing polyarylether resin, magnesium chloride, calcium sulfate, cellulose acetate butyrate and water-soluble starch, crushing and grinding the epoxy polyurethane, the epoxy resin, the phosphorus-containing polyarylether resin, the magnesium chloride, the calcium sulfate, the cellulose acetate butyrate and the water-soluble starch until the powder can pass through a 50-mesh sieve, pouring the powder into a reaction kettle, adding a proper amount of water into the reaction kettle, stirring the powder, raising the temperature to 70-85 ℃ while stirring, continuing stirring the powder for 15-30 minutes, stopping heating, naturally cooling the powder to room temperature, and continuing stirring the powder for reaction in the cooling process to finally obtain the water-permeable coagulant.
Preferably, in S3, when the first stirring device is stirring, air is injected into the device by using a high-pressure air pump, and the temperature during stirring is controlled to be 35 ℃ to 45 ℃.
Preferably, in S3, the temperature of the second stirring device during stirring is controlled to 35 ℃ to 50 ℃, and air is injected into the device while stirring.
Preferably, in S4, after curing for 3 days, the pavement is flushed by using a high-pressure water gun, and the pores inside the concrete pavement are dredged by using high-pressure water flow.
The invention has the beneficial effects that:
the additive is added into the concrete, and a large amount of air is introduced and generated inside the concrete by utilizing iron powder, aluminum powder, a bubble generating agent, sodium bicarbonate, diisobutyl naphthalene sulfonate and the like, so that a large amount of bubbles are formed inside the concrete, the bubbles form mutually communicated gaps after the laying is finished, and the gaps and the water permeability coefficient of the concrete pavement are increased through the dredging of a high-pressure water gun, the water permeable coagulant can ensure the water permeability of the concrete and simultaneously enhance the connection strength between the concrete, and even if the concrete pavement is damaged, the concrete pavement still has strong bending resistance and compression resistance.
Drawings
Fig. 1 is a flow chart of the present invention.
Detailed Description
The present invention will be further illustrated with reference to the following specific examples.
Referring to FIG. 1, the first embodiment
The embodiment provides a construction method of a pervious concrete pavement project, which comprises the following steps:
s1: excavating and compacting the roadbed according to the design requirement, cleaning the roadbed substrate according to the design requirement in real time of excavation pressure, compacting the substrate by using a road roller, controlling the compaction coefficient to be 95% -99%, paving a permeable gravel layer on the compacted roadbed, compacting again, wherein a permeable cushion layer is made of natural gravel, the paving thickness is controlled to be 150-250 mm, compacting the permeable gravel layer by using road roller equipment, flattening the top of the permeable gravel layer, controlling the compaction coefficient to be 95% -99%, paving molds on two sides of the roadbed, and finally paving reinforcing ribs between the interior of the mold and the top of the permeable gravel layer;
s2: weighing a first dressing and a second auxiliary material, wherein the first dressing comprises 14 parts of additive, 15 parts of water-permeable coagulant, 3 parts of water reducing agent, 24 parts of modifier and 6 parts of rubber particles, the second auxiliary material comprises 15 parts of additive, 15 parts of water-permeable coagulant, 3 parts of water reducing agent and 24-28 parts of modifier, the additive comprises iron powder, aluminum powder, bubble generating agent, sodium bicarbonate and diisobutylnaphthalenesulfonate, the weight ratio of the additive components is 76% of iron powder, 6% of aluminum powder, 11% of bubble generating agent, 4% of sodium bicarbonate and 3% of diisobutylnaphthalenesulfonate, the bubble generating agent is one or more of rosin resins, alkyl and alkyl aromatic hydrocarbon sulfonic acids, fatty alcohol sulfonic acid salts, saponins, protein salts and petroleum sulfonate hydrochloric acid, the water-permeable coagulant comprises epoxy polyurethane, epoxy resin, phosphorus-containing polyarylether resin, and the like, The specific gravity of the epoxy polyurethane, the epoxy resin, the phosphorus-containing polyarylether resin, the magnesium chloride, the calcium sulfate, the cellulose acetate butyrate and the water-soluble starch is 45:20:15:3:3:4:10, and the production steps of the water-permeable coagulant are as follows: weighing epoxy polyurethane, epoxy resin, phosphorus-containing polyarylether resin, magnesium chloride, calcium sulfate, cellulose acetate butyrate and water-soluble starch, crushing and grinding the epoxy polyurethane, epoxy resin, phosphorus-containing polyarylether resin, magnesium chloride, calcium sulfate, cellulose acetate butyrate and water-soluble starch until the powder can pass through a 50-mesh sieve, pouring the powder into a reaction kettle, adding a proper amount of water, stirring, raising the temperature to 70-85 ℃ while stirring, continuing stirring for 15-30 minutes, stopping heating, naturally cooling to room temperature, and continuing stirring for reaction in the cooling process to finally obtain a water-permeable coagulant;
s3: pouring the weighed first dressing into first stirring equipment, adding 400 parts of concrete, a proper amount of stone aggregate and water, stirring, injecting air into the equipment by using a high-pressure air pump when the first stirring equipment is used for stirring, controlling the temperature during stirring to be 35-45 ℃ to prepare bottom concrete, pouring the weighed second dressing into second stirring equipment, adding 400 parts of concrete, a proper amount of stone aggregate and water, stirring, controlling the temperature during stirring by using the second stirring equipment to be 35-50 ℃, injecting air into the equipment while stirring to prepare surface concrete, uniformly spreading the bottom concrete in a mould, controlling the loose coefficient to be 1.1, then using a flat troweling machine for troweling and compacting, uniformly spreading the surface concrete on the top of the bottom concrete before the bottom concrete is initially set, controlling the loose paving coefficient to be 1.1, carrying out trowelling and compacting by using a flat trowelling machine, and then carrying out pavement compacting by using a road roller, thereby obtaining a semi-finished concrete pavement;
s4: and (3) carrying out moisture preservation and maintenance on the concrete pavement, flushing the pavement by using a high-pressure water gun after the concrete pavement is maintained for 3 days, and dredging pores in the concrete pavement by using high-pressure water flow to obtain the finished concrete pavement.
Referring to FIG. 1, example II
The embodiment provides a construction method of a pervious concrete pavement project, which comprises the following steps:
s1: excavating and compacting the roadbed according to the design requirement, cleaning the roadbed substrate according to the design requirement in real time of excavation pressure, compacting the substrate by using a road roller, controlling the compaction coefficient to be 95% -99%, paving a permeable gravel layer on the compacted roadbed, compacting again, wherein a permeable cushion layer is made of natural gravel, the paving thickness is controlled to be 150-250 mm, compacting the permeable gravel layer by using road roller equipment, flattening the top of the permeable gravel layer, controlling the compaction coefficient to be 95% -99%, paving molds on two sides of the roadbed, and finally paving reinforcing ribs between the interior of the mold and the top of the permeable gravel layer;
s2: weighing a first dressing and a second auxiliary material, wherein the first dressing comprises 13 parts of additive, 13 parts of water-permeable coagulant, 3 parts of water reducing agent, 25 parts of modifier and 7 parts of rubber particles, the second auxiliary material comprises 14 parts of additive, 14 parts of water-permeable coagulant, 3 parts of water reducing agent and 25 parts of modifier, the additive comprises iron powder, aluminum powder, bubble generating agent, sodium bicarbonate and diisobutylnaphthalenesulfonate, the additive comprises 77% of iron powder, 10% of aluminum powder, 10% of bubble generating agent, 1% of sodium bicarbonate and 2% of diisobutylnaphthalenesulfonate in parts by weight, the bubble generating agent is one or more of rosin resin, alkyl and alkyl arene sulfonic acid, fatty alcohol sulfonate, saponins, protein salt and petroleum sulfonate hydrochloride, and the water-permeable material comprises epoxy polyurethane, epoxy resin, phosphorus-containing polyarylether resin, magnesium chloride, The specific gravity of the calcium sulfate, the cellulose acetate butyrate and the water-soluble starch is 45:20:15:3:3:4:10, and the production steps of the water-permeable coagulant are as follows: weighing epoxy polyurethane, epoxy resin, phosphorus-containing polyarylether resin, magnesium chloride, calcium sulfate, cellulose acetate butyrate and water-soluble starch, crushing and grinding the epoxy polyurethane, epoxy resin, phosphorus-containing polyarylether resin, magnesium chloride, calcium sulfate, cellulose acetate butyrate and water-soluble starch until the powder can pass through a 50-mesh sieve, pouring the powder into a reaction kettle, adding a proper amount of water, stirring, raising the temperature to 70-85 ℃ while stirring, continuing stirring for 15-30 minutes, stopping heating, naturally cooling to room temperature, and continuing stirring for reaction in the cooling process to finally obtain a water-permeable coagulant;
s3: pouring the weighed first dressing into first stirring equipment, adding 400 parts of concrete, a proper amount of stone aggregate and water, stirring, injecting air into the equipment by using a high-pressure air pump when the first stirring equipment is used for stirring, controlling the temperature during stirring to be 35-45 ℃ to prepare bottom concrete, pouring the weighed second dressing into second stirring equipment, adding 400 parts of concrete, a proper amount of stone aggregate and water, stirring, controlling the temperature during stirring by using the second stirring equipment to be 35-50 ℃, injecting air into the equipment while stirring to prepare surface concrete, uniformly spreading the bottom concrete in a mould, controlling the loose coefficient to be 1.1, then using a flat troweling machine for troweling and compacting, uniformly spreading the surface concrete on the top of the bottom concrete before the bottom concrete is initially set, controlling the loose paving coefficient to be 1.1, carrying out trowelling and compacting by using a flat trowelling machine, and then carrying out pavement compacting by using a road roller, thereby obtaining a semi-finished concrete pavement;
s4: and (3) carrying out moisture preservation and maintenance on the concrete pavement, flushing the pavement by using a high-pressure water gun after the concrete pavement is maintained for 3 days, and dredging pores in the concrete pavement by using high-pressure water flow to obtain the finished concrete pavement.
Referring to FIG. 1, example III
The embodiment provides a construction method of a pervious concrete pavement project, which comprises the following steps:
s1: excavating and compacting the roadbed according to the design requirement, cleaning the roadbed substrate according to the design requirement in real time of excavation pressure, compacting the substrate by using a road roller, controlling the compaction coefficient to be 95% -99%, paving a permeable gravel layer on the compacted roadbed, compacting again, wherein a permeable cushion layer is made of natural gravel, the paving thickness is controlled to be 150-250 mm, compacting the permeable gravel layer by using road roller equipment, flattening the top of the permeable gravel layer, controlling the compaction coefficient to be 95% -99%, paving molds on two sides of the roadbed, and finally paving reinforcing ribs between the interior of the mold and the top of the permeable gravel layer;
s2: weighing a first dressing and a second auxiliary material, wherein the first dressing comprises 12 parts of additive, 10 parts of water-permeable coagulant, 3 parts of water reducing agent, 26 parts of modifier and 8 parts of rubber particles, the second auxiliary material comprises 13 parts of additive, 13 parts of water-permeable coagulant, 3 parts of water reducing agent and 25 parts of modifier, the additive comprises iron powder, aluminum powder, bubble generating agent, sodium bicarbonate and diisobutylnaphthalenesulfonate, the additive comprises 78% of iron powder, 7% of aluminum powder, 13% of bubble generating agent, 1% of sodium bicarbonate and 1% of diisobutylnaphthalenesulfonate in parts by weight, the bubble generating agent is one or more of rosin resin, alkyl and alkyl arene sulfonic acid, fatty alcohol sulfonate, saponin, protein salt and petroleum sulfonate hydrochloric acid, and the water-permeable additive comprises epoxy polyurethane, epoxy resin, phosphorus-containing polyarylether resin, magnesium chloride, The specific gravity of the calcium sulfate, the cellulose acetate butyrate and the water-soluble starch is 45:20:15:3:3:4:10, and the production steps of the water-permeable coagulant are as follows: weighing epoxy polyurethane, epoxy resin, phosphorus-containing polyarylether resin, magnesium chloride, calcium sulfate, cellulose acetate butyrate and water-soluble starch, crushing and grinding the epoxy polyurethane, epoxy resin, phosphorus-containing polyarylether resin, magnesium chloride, calcium sulfate, cellulose acetate butyrate and water-soluble starch until the powder can pass through a 50-mesh sieve, pouring the powder into a reaction kettle, adding a proper amount of water, stirring, raising the temperature to 70-85 ℃ while stirring, continuing stirring for 15-30 minutes, stopping heating, naturally cooling to room temperature, and continuing stirring for reaction in the cooling process to finally obtain a water-permeable coagulant;
s3: pouring the weighed first dressing into first stirring equipment, adding 400 parts of concrete, a proper amount of stone aggregate and water, stirring, injecting air into the equipment by using a high-pressure air pump when the first stirring equipment is used for stirring, controlling the temperature during stirring to be 35-45 ℃ to prepare bottom concrete, pouring the weighed second dressing into second stirring equipment, adding 400 parts of concrete, a proper amount of stone aggregate and water, stirring, controlling the temperature during stirring by using the second stirring equipment to be 35-50 ℃, injecting air into the equipment while stirring to prepare surface concrete, uniformly spreading the bottom concrete in a mould, controlling the loose coefficient to be 1.1, then using a flat troweling machine for troweling and compacting, uniformly spreading the surface concrete on the top of the bottom concrete before the bottom concrete is initially set, controlling the loose paving coefficient to be 1.1, carrying out trowelling and compacting by using a flat trowelling machine, and then carrying out pavement compacting by using a road roller, thereby obtaining a semi-finished concrete pavement;
s4: and (3) carrying out moisture preservation and maintenance on the concrete pavement, flushing the pavement by using a high-pressure water gun after the concrete pavement is maintained for 3 days, and dredging pores in the concrete pavement by using high-pressure water flow to obtain the finished concrete pavement.
Referring to FIG. 1, example No. four
The embodiment provides a construction method of a pervious concrete pavement project, which comprises the following steps:
s1: excavating and compacting the roadbed according to the design requirement, cleaning the roadbed substrate according to the design requirement in real time of excavation pressure, compacting the substrate by using a road roller, controlling the compaction coefficient to be 95% -99%, paving a permeable gravel layer on the compacted roadbed, compacting again, wherein a permeable cushion layer is made of natural gravel, the paving thickness is controlled to be 150-250 mm, compacting the permeable gravel layer by using road roller equipment, flattening the top of the permeable gravel layer, controlling the compaction coefficient to be 95% -99%, paving molds on two sides of the roadbed, and finally paving reinforcing ribs between the interior of the mold and the top of the permeable gravel layer;
s2: weighing a first dressing and a second auxiliary material, wherein the first dressing comprises 11 parts of additive, 7 parts of water-permeable coagulant, 4 parts of water reducing agent, 27 parts of modifier and 9 parts of rubber particles, the second auxiliary material comprises 12 parts of additive, 11 parts of water-permeable coagulant, 4 parts of water reducing agent and 26 parts of modifier, the additive comprises iron powder, aluminum powder, bubble generating agent, sodium bicarbonate and diisobutylnaphthalenesulfonate, the additive comprises 79% of iron powder, 6% of aluminum powder, 10% of bubble generating agent, 3% of sodium bicarbonate and 2% of diisobutylnaphthalenesulfonate in parts by weight, the bubble generating agent is one or more of rosin resin, alkyl and alkyl arene sulfonic acid, fatty alcohol sulfonate, saponin, protein salt and petroleum sulfonate hydrochloric acid, and the water-permeable additive comprises epoxy polyurethane, epoxy resin, phosphorus-containing polyarylether resin, magnesium chloride, The specific gravity of the calcium sulfate, the cellulose acetate butyrate and the water-soluble starch is 45:20:15:3:3:4:10, and the production steps of the water-permeable coagulant are as follows: weighing epoxy polyurethane, epoxy resin, phosphorus-containing polyarylether resin, magnesium chloride, calcium sulfate, cellulose acetate butyrate and water-soluble starch, crushing and grinding the epoxy polyurethane, epoxy resin, phosphorus-containing polyarylether resin, magnesium chloride, calcium sulfate, cellulose acetate butyrate and water-soluble starch until the powder can pass through a 50-mesh sieve, pouring the powder into a reaction kettle, adding a proper amount of water, stirring, raising the temperature to 70-85 ℃ while stirring, continuing stirring for 15-30 minutes, stopping heating, naturally cooling to room temperature, and continuing stirring for reaction in the cooling process to finally obtain a water-permeable coagulant;
s3: pouring the weighed first dressing into first stirring equipment, adding 400 parts of concrete, a proper amount of stone aggregate and water, stirring, injecting air into the equipment by using a high-pressure air pump when the first stirring equipment is used for stirring, controlling the temperature during stirring to be 35-45 ℃ to prepare bottom concrete, pouring the weighed second dressing into second stirring equipment, adding 400 parts of concrete, a proper amount of stone aggregate and water, stirring, controlling the temperature during stirring by using the second stirring equipment to be 35-50 ℃, injecting air into the equipment while stirring to prepare surface concrete, uniformly spreading the bottom concrete in a mould, controlling the loose coefficient to be 1.1, then using a flat troweling machine for troweling and compacting, uniformly spreading the surface concrete on the top of the bottom concrete before the bottom concrete is initially set, controlling the loose paving coefficient to be 1.1, carrying out trowelling and compacting by using a flat trowelling machine, and then carrying out pavement compacting by using a road roller, thereby obtaining a semi-finished concrete pavement;
s4: and (3) carrying out moisture preservation and maintenance on the concrete pavement, flushing the pavement by using a high-pressure water gun after the concrete pavement is maintained for 3 days, and dredging pores in the concrete pavement by using high-pressure water flow to obtain the finished concrete pavement.
Referring to FIG. 1, example V
The embodiment provides a construction method of a pervious concrete pavement project, which comprises the following steps:
s1: excavating and compacting the roadbed according to the design requirement, cleaning the roadbed substrate according to the design requirement in real time of excavation pressure, compacting the substrate by using a road roller, controlling the compaction coefficient to be 95% -99%, paving a permeable gravel layer on the compacted roadbed, compacting again, wherein a permeable cushion layer is made of natural gravel, the paving thickness is controlled to be 150-250 mm, compacting the permeable gravel layer by using road roller equipment, flattening the top of the permeable gravel layer, controlling the compaction coefficient to be 95% -99%, paving molds on two sides of the roadbed, and finally paving reinforcing ribs between the interior of the mold and the top of the permeable gravel layer;
s2: weighing a first dressing and a second auxiliary material, wherein the first dressing comprises 10 parts of additive, 5 parts of water-permeable coagulant, 4 parts of water reducing agent, 28 parts of modifier and 10 parts of rubber particles, the second auxiliary material comprises 11 parts of additive, 10 parts of water-permeable coagulant, 4 parts of water reducing agent and 28 parts of modifier, the additive comprises iron powder, aluminum powder, bubble generating agent, sodium bicarbonate and diisobutylnaphthalenesulfonate, the additive comprises 80% of iron powder, 6% of aluminum powder, 11% of bubble generating agent, 2% of sodium bicarbonate and 1% of diisobutylnaphthalenesulfonate in parts by weight, the bubble generating agent is one or more of rosin resin, alkyl and alkyl arene sulfonic acid, fatty alcohol sulfonate, saponin, protein salt and petroleum sulfohydrochloric acid, and the water-permeable coagulant comprises epoxy polyurethane, epoxy resin, phosphorus-containing polyarylether resin, magnesium chloride, The specific gravity of the calcium sulfate, the cellulose acetate butyrate and the water-soluble starch is 45:20:15:3:3:4:10, and the production steps of the water-permeable coagulant are as follows: weighing epoxy polyurethane, epoxy resin, phosphorus-containing polyarylether resin, magnesium chloride, calcium sulfate, cellulose acetate butyrate and water-soluble starch, crushing and grinding the epoxy polyurethane, epoxy resin, phosphorus-containing polyarylether resin, magnesium chloride, calcium sulfate, cellulose acetate butyrate and water-soluble starch until the powder can pass through a 50-mesh sieve, pouring the powder into a reaction kettle, adding a proper amount of water, stirring, raising the temperature to 70-85 ℃ while stirring, continuing stirring for 15-30 minutes, stopping heating, naturally cooling to room temperature, and continuing stirring for reaction in the cooling process to finally obtain a water-permeable coagulant;
s3: pouring the weighed first dressing into first stirring equipment, adding 400 parts of concrete, a proper amount of stone aggregate and water, stirring, injecting air into the equipment by using a high-pressure air pump when the first stirring equipment is used for stirring, controlling the temperature during stirring to be 35-45 ℃ to prepare bottom concrete, pouring the weighed second dressing into second stirring equipment, adding 400 parts of concrete, a proper amount of stone aggregate and water, stirring, controlling the temperature during stirring by using the second stirring equipment to be 35-50 ℃, injecting air into the equipment while stirring to prepare surface concrete, uniformly spreading the bottom concrete in a mould, controlling the loose coefficient to be 1.1, then using a flat troweling machine for troweling and compacting, uniformly spreading the surface concrete on the top of the bottom concrete before the bottom concrete is initially set, controlling the loose paving coefficient to be 1.1, carrying out trowelling and compacting by using a flat trowelling machine, and then carrying out pavement compacting by using a road roller, thereby obtaining a semi-finished concrete pavement;
s4: and (3) carrying out moisture preservation and maintenance on the concrete pavement, flushing the pavement by using a high-pressure water gun after the concrete pavement is maintained for 3 days, and dredging pores in the concrete pavement by using high-pressure water flow to obtain the finished concrete pavement.
Comparing the conventional concrete pavement with the concrete pavements prepared in examples one to five, the concrete pavements prepared in examples one to five are as follows:
as can be seen from the above table, the concrete pavement prepared by the invention has obviously improved water permeability coefficient, compressive strength and flexural strength, and the implementation is the best embodiment.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (10)
1. The construction method of the pervious concrete pavement engineering is characterized by comprising the following steps:
s1: excavating and compacting the roadbed according to the design requirement, paving a permeable gravel layer on the compacted roadbed, compacting again, paving moulds on two sides of the roadbed, and paving reinforcing ribs between the inner part of the mould and the top of the permeable gravel layer;
s2: weighing a first dressing and a second auxiliary material, wherein the first dressing comprises 10-14 parts of an additive, 5-15 parts of a water permeable coagulant, 3-4 parts of a water reducing agent, 24-28 parts of a modifier and 6-10 parts of rubber particles, the second auxiliary material comprises 11-15 parts of an additive, 10-15 parts of a water permeable coagulant, 3-4 parts of a water reducing agent and 24-28 parts of a modifier, the additive comprises iron powder, aluminum powder, a bubble generating agent, sodium bicarbonate and diisobutyl naphthalene sulfonate, and the water permeable coagulant comprises epoxy polyurethane, epoxy resin, phosphorus-containing polyarylether resin, magnesium chloride, calcium sulfate, cellulose acetate butyrate and water-soluble starch;
s3: pouring the weighed first dressing into first stirring equipment, adding 400 parts of concrete, a proper amount of stone aggregate and water, stirring to prepare bottom concrete, pouring the weighed second dressing into second stirring equipment, adding 400 parts of concrete, a proper amount of stone aggregate and water, stirring to prepare surface concrete, uniformly spreading the bottom concrete in a mold, controlling the loose coefficient to be 1.1, then using a flat troweling machine to perform troweling compaction, uniformly spreading the surface concrete on the top of the bottom concrete before primary setting of the bottom concrete, controlling the loose coefficient to be 1.1, using the flat troweling machine to perform troweling compaction, and then using a road roller to perform pavement compaction, thereby obtaining a semi-finished concrete pavement;
s4: and (5) moisturizing and maintaining the concrete pavement to obtain the finished concrete pavement.
2. The pervious concrete pavement engineering construction method of claim 1, wherein in S1, the excavation pressure is real-time, the roadbed base is cleaned according to the design requirement, then a road roller is used for compacting the base, and the compaction coefficient is controlled to be 95% -99%.
3. The pervious concrete pavement engineering construction method of claim 1, wherein in S1, the pervious cushion layer is made of natural gravels, the laying thickness is controlled to be 150 mm-250 mm, the pervious gravel layer is compacted by using road roller equipment, the top of the pervious gravel layer is flattened, and the compaction coefficient is controlled to be 95% -99%.
4. The pervious concrete pavement engineering construction method of claim 1, wherein in S2, the weight ratio of the additive components is 76% -80% of iron powder, 6% -10% of aluminum powder, 10% -14% of bubble generating agent, 1% -4% of sodium bicarbonate and 1% -3% of sodium diisobutylnaphthalenesulfonate.
5. The pervious concrete pavement engineering construction method of claim 1, wherein in S2, the bubble generating agent is one or more of rosin resins, alkyl and alkyl aromatic hydrocarbon sulfonic acids, fatty alcohol sulfonates, saponins, protein salts and petroleum sulfonic acid.
6. The pervious concrete pavement engineering construction method of claim 1, wherein in S2, the specific gravity of epoxy polyurethane, epoxy resin, phosphorus-containing polyarylether resin, magnesium chloride, calcium sulfate, cellulose acetate butyrate and water-soluble starch is 45:20:15:3:3:4: 10.
7. A pervious concrete pavement engineering construction method according to claim 1, characterized in that in S2, the pervious coagulant is produced by the steps of: weighing epoxy polyurethane, epoxy resin, phosphorus-containing polyarylether resin, magnesium chloride, calcium sulfate, cellulose acetate butyrate and water-soluble starch, crushing and grinding the epoxy polyurethane, the epoxy resin, the phosphorus-containing polyarylether resin, the magnesium chloride, the calcium sulfate, the cellulose acetate butyrate and the water-soluble starch until the powder can pass through a 50-mesh sieve, pouring the powder into a reaction kettle, adding a proper amount of water into the reaction kettle, stirring the powder, raising the temperature to 70-85 ℃ while stirring, continuing stirring the powder for 15-30 minutes, stopping heating, naturally cooling the powder to room temperature, and continuing stirring the powder for reaction in the cooling process to finally obtain the water-permeable coagulant.
8. The pervious concrete pavement engineering construction method of claim 1, wherein in S3, when the first stirring device is stirring, air is injected into the device by using a high-pressure air pump, and the temperature during stirring is controlled at 35-45 ℃.
9. A pervious concrete pavement engineering construction method as claimed in claim 1, wherein in S3, the temperature of the second stirring device is controlled at 35-50 ℃ while stirring, and air is injected into the device while stirring.
10. The pervious concrete pavement engineering construction method of claim 1, wherein in S4, after 3 days of maintenance, the pavement is flushed by a high-pressure water gun, and pores inside the concrete pavement are dredged by high-pressure water flow.
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