CN107059546B - Pavement paving method with dephosphorization function and structure thereof - Google Patents

Pavement paving method with dephosphorization function and structure thereof Download PDF

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CN107059546B
CN107059546B CN201710288205.8A CN201710288205A CN107059546B CN 107059546 B CN107059546 B CN 107059546B CN 201710288205 A CN201710288205 A CN 201710288205A CN 107059546 B CN107059546 B CN 107059546B
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sidewalk
parts
scrap iron
particle size
base layer
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CN107059546A (en
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李乃稳
李龙国
刘超
苟思
鲁恒
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Sichuan University
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Sichuan University
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    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01CCONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C15/00Pavings specially adapted for footpaths, sidewalks or cycle tracks
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B28/00Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • C04B28/02Compositions 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
    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01CCONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C5/00Pavings made of prefabricated single units
    • E01C5/06Pavings made of prefabricated single units made of units with cement or like binders
    • E01C5/065Pavings made of prefabricated single units made of units with cement or like binders characterised by their structure or component materials, e.g. concrete layers of different structure, special additives
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2111/00Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/00017Aspects relating to the protection of the environment
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2111/00Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/00241Physical properties of the materials not provided for elsewhere in C04B2111/00
    • C04B2111/00284Materials permeable to liquids
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2111/00Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/00474Uses not provided for elsewhere in C04B2111/00
    • C04B2111/0075Uses not provided for elsewhere in C04B2111/00 for road construction
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2111/00Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/00474Uses not provided for elsewhere in C04B2111/00
    • C04B2111/00793Uses not provided for elsewhere in C04B2111/00 as filters or diaphragms

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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)
  • Road Paving Structures (AREA)

Abstract

The invention provides a sidewalk laying method with a dephosphorization function for urban rainwater, which comprises the following steps: (1) when the sidewalk is paved, the sidewalk plate brick comprises the following components in parts by weight: 50-60 parts of cement, 8-12 parts of diatomite, 5-8 parts of scrap iron, 3-5 parts of epoxy resin and 2-4 parts of curing agent; the particle size of the scrap iron is 0.5-2 mm; (2) when a sidewalk base layer is constructed, scrap iron accounting for 3-8% of the total weight of the base layer material is doped, and the particle size of the scrap iron is 1-3 mm; the thickness of the sidewalk base layer is 10-30 cm; wherein the particle size of the cement aggregate is 2-5 mm. For rainwater accumulated on urban pavements, when the drainage infiltration speed is 5-15 m/h and the phosphorus concentration in the accumulated water reaches 3mg/l, the phosphorus removal rate of the invention can reach more than 80%, and the TSS removal effect reaches more than 90%.

Description

Pavement paving method with dephosphorization function and structure thereof
Technical Field
The invention belongs to the field of water conservancy and municipal environmental protection engineering, and particularly relates to a sidewalk laying method with a dephosphorization function and a structure thereof.
Background
In recent years, the urban water environment problem caused by that the urban surface water carrying phosphorus-containing sewage is not effectively treated and directly enters urban sewers is increasingly prominent. How to effectively solve the problem becomes an important research subject for relevant personnel including environmental protection workers and water conservancy workers.
The problem of excessive phosphorus in water is one of the main research directions. The excessive phosphorus easily causes eutrophication of water body, causes enrichment of harmful microorganisms and plankton in the water body, causes pollution and deterioration of water body environment, and is easy to cause spread of human and animal diseases. Particularly, for urban drainage systems, the excessive phosphorus causes a great increase in the water treatment cost and the maintenance cost of the drainage system.
At present, in the conventional municipal construction, in order to prevent urban waterlogging and effectively utilize urban rainfall, pavement of sidewalks begins to adopt a paving form of water permeable bricks. But the water permeable bricks do not effectively intercept phosphorus pollutants in urban rainwater. Therefore, for removing urban rainfall, paving sidewalks with water permeable function and phosphorus removal function becomes an important measure for efficiently draining water in cities, fully utilizing rainfall resources and simultaneously removing phosphorus to protect the ecological environment of a water body.
Generally, municipal phosphorus-containing sewage is usually concentrated on or around sidewalks, and municipal surface water is also usually drained from the sidewalks. Therefore, it is desired to improve the sidewalk as one of the breakthrough points for solving the above problems. However, the prior art is only rarely reported to be successful in this regard.
Through search, the applicant does not find related patents of the sidewalk with the phosphorus removal function in the prior art. The related patents are generally corresponding environment-friendly sidewalk bricks, for example, the chinese patent "environment-friendly concrete sidewalk brick" with application number 201510997370.1, and such patents generally adopt environment-friendly materials as raw materials, thereby realizing a certain environment-friendly function, and failing to provide the phosphorus removal efficiency and drainage efficiency required by the above-mentioned problem of excessive phosphorus in the municipal construction process. In addition, some special sidewalk structures are designed, and a certain water storage function is given to the sidewalk, so that the polluted water can be infiltrated into a city drainage system, and the stored water can be recycled (as in the chinese patent with application number 201020676936.3), but the sidewalk cannot substantially play a role in removing phosphorus from a water body, and only slows down the infiltration degree of the polluted water.
Therefore, a pavement paving method which has high phosphorus removal efficiency and can realize rapid drainage of urban road surfaces is needed in the field.
Disclosure of Invention
In view of the disadvantages of the prior art, an object of the present invention is to provide a method for paving a sidewalk with a phosphorus removal function, comprising:
(1) when the sidewalk is paved, the sidewalk plate brick comprises the following components in parts by weight:
Figure BDA0001281223030000021
Figure BDA0001281223030000031
the particle size of the scrap iron is 0.5-2 mm;
(2) when constructing a sidewalk base layer, doping scrap iron accounting for 3-8% of the total weight of the base layer material, wherein the particle size of the scrap iron is 1-3 mm; the thickness of the sidewalk base layer is 10-30 cm;
wherein the particle size of the cement aggregate is 2-5 mm. .
Preferably, the sidewalk plate brick comprises the following components in parts by weight:
Figure BDA0001281223030000032
the particle size of the scrap iron is 0.5-2 mm.
Preferably, when constructing a sidewalk base, iron pieces accounting for 5% of the total weight of the base material are added.
The construction method of the sidewalk base layer comprises the following steps: tamping soil, paving a broken stone cushion layer and dry and hard cement mortar from bottom to top according to the height ratio of 1:2, and doping the scrap iron during paving; the particle size of the broken stone in the broken stone cushion layer is 2-5 mm, and the particle size of the dry and hard cement mortar aggregate is 2-5 mm.
Preferably, the thickness of the sidewalk plate brick is 4-8 cm.
The invention discovers that the efficient dephosphorization effect is realized by the design of the pavement plate bricks and the pavement base layer. As shown in the embodiment of the invention, when the drainage infiltration speed is 5-15 m/h and the phosphorus concentration is 3mg/l, the invention can provide more than 80% of dephosphorization effect and more than 90% of TSS removal effect.
It is a further object of the present invention to provide a walkway construction made by the above method.
The invention has the beneficial effects that:
for urban road surface accumulated water, when the drainage infiltration speed is 5-15 m/h and the phosphorus concentration in the accumulated water reaches 3mg/l, the phosphorus removal rate can reach more than 80%, and the TSS removal effect reaches more than 90%.
Drawings
Fig. 1 is a schematic view of the sidewalk structure obtained by the invention.
Detailed Description
The present invention is described in detail below by way of examples, and it should be noted that the following examples are only for illustrating the present invention and should not be construed as limiting the scope of the present invention.
Example 1
(1) When the sidewalk is paved, the sidewalk plate brick comprises the following components in parts by weight:
Figure BDA0001281223030000041
the particle size of the scrap iron is 0.5-2 mm;
(2) when a sidewalk base layer is constructed, scrap iron accounting for 3% of the total weight of the base layer material is doped, and the particle size of the scrap iron is 1-3 mm; the thickness of the sidewalk base layer is 30 cm;
wherein the particle size of the cement aggregate is 2-5 mm.
The thickness of the sidewalk plate brick is 4 cm.
The construction method of the sidewalk base layer comprises the following steps: tamping soil, paving a broken stone cushion layer and dry and hard cement mortar from bottom to top according to the height ratio of 1:2, and doping the scrap iron during paving; the particle size of the broken stone in the broken stone cushion layer is 2-5 mm, and the particle size of the dry and hard cement mortar aggregate is 2-5 mm.
Example 2
(1) When the sidewalk is paved, the sidewalk plate brick comprises the following components in parts by weight:
Figure BDA0001281223030000051
the particle size of the scrap iron is 0.5-2 mm;
(2) when a sidewalk base layer is constructed, iron chips accounting for 8% of the total weight of the base layer material are doped, and the particle size of the iron chips is 1-3 mm; the thickness of the sidewalk base layer is 10 cm;
wherein the particle size of the cement aggregate is 2-5 mm.
The thickness of the sidewalk plate brick is 8 cm.
The construction method of the sidewalk base layer comprises the following steps: tamping soil, paving a broken stone cushion layer and dry and hard cement mortar from bottom to top according to the height ratio of 1:2, and doping the scrap iron during paving; the particle size of the broken stone in the broken stone cushion layer is 2-5 mm, and the particle size of the dry and hard cement mortar aggregate is 2-5 mm.
Example 3
(1) When the sidewalk is paved, the sidewalk plate brick comprises the following components in parts by weight:
Figure BDA0001281223030000061
the particle size of the scrap iron is 0.5-2 mm;
(2) when a sidewalk base layer is constructed, iron chips accounting for 5% of the total weight of the base layer material are doped, and the particle size of the iron chips is 1-3 mm; the thickness of the sidewalk base layer is 20 cm;
wherein the particle size of the cement aggregate is 2-5 mm.
The thickness of the sidewalk plate brick is 6 cm.
The construction method of the sidewalk base layer comprises the following steps: tamping soil, paving a broken stone cushion layer and dry and hard cement mortar from bottom to top according to the height ratio of 1:2, and doping the scrap iron during paving; the particle size of the broken stone in the broken stone cushion layer is 2-5 mm, and the particle size of the dry and hard cement mortar aggregate is 2-5 mm. Examples of the experiments
Phosphorus removal and drainage efficiency detection were performed on examples 1 to 3, and the results were: when the drainage infiltration speed is 5-15 m/h and the phosphorus concentration is 3mg/l, the phosphorus removal effect reaches over 80 percent and the TSS reaches over 90 percent.

Claims (5)

1. A method of paving a sidewalk with a phosphorus removal function, the method comprising:
(1) when the sidewalk is paved, the sidewalk plate brick comprises the following components in parts by weight:
50-60 parts of cement
8-12 parts of diatomite
5-8 parts of scrap iron
3-5 parts of epoxy resin
2-4 parts of curing agent
The particle size of the scrap iron is 0.5-2 mm;
(2) when a sidewalk base layer is constructed, scrap iron accounting for 3-8% of the total weight of the base layer material is doped, and the particle size of the scrap iron is 1-3 mm; the thickness of the sidewalk base layer is 10-30 cm;
the construction method of the sidewalk base layer comprises the following steps: tamping soil, paving a broken stone cushion layer and dry and hard cement mortar from bottom to top according to the height ratio of 1:2, and doping the scrap iron during paving; the particle size of the broken stone in the broken stone cushion layer is 2-5 mm, and the particle size of the dry and hard cement mortar aggregate is 2-5 mm.
2. The method of claim 1, wherein the pavement slab comprises, in parts by weight:
55 portions of cement
10 portions of diatomite
6 parts of scrap iron
Epoxy resin 4 parts
3 parts of curing agent
The particle size of the scrap iron is 0.5-2 mm.
3. The method of claim 1, wherein the iron pieces are incorporated in an amount of 5% by weight based on the total weight of the base material when constructing the sidewalk base.
4. The method of claim 1, wherein the thickness of the sidewalk slab brick is 4-8 cm.
5. A walkway construction made by the process of any one of claims 1 to 4.
CN201710288205.8A 2017-04-27 2017-04-27 Pavement paving method with dephosphorization function and structure thereof Active CN107059546B (en)

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