CN110485592B - Construction method of damp-proof wall - Google Patents
Construction method of damp-proof wall Download PDFInfo
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- CN110485592B CN110485592B CN201910770916.8A CN201910770916A CN110485592B CN 110485592 B CN110485592 B CN 110485592B CN 201910770916 A CN201910770916 A CN 201910770916A CN 110485592 B CN110485592 B CN 110485592B
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
- C04B28/04—Portland cements
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/009—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone characterised by the material treated
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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
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/45—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
- C04B41/52—Multiple coating or impregnating multiple coating or impregnating with the same composition or with compositions only differing in the concentration of the constituents, is classified as single coating or impregnation
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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
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/60—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone of only artificial stone
- C04B41/61—Coating or impregnation
- C04B41/70—Coating or impregnation for obtaining at least two superposed coatings having different compositions
- C04B41/71—Coating or impregnation for obtaining at least two superposed coatings having different compositions at least one coating being an organic material
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/66—Sealings
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
- E04B2/84—Walls made by casting, pouring, or tamping in situ
- E04B2/86—Walls made by casting, pouring, or tamping in situ made in permanent forms
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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
- C04B2111/20—Resistance against chemical, physical or biological attack
- C04B2111/27—Water resistance, i.e. waterproof or water-repellent materials
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Abstract
The invention relates to the field of building construction, and provides a construction method of a damp-proof wall aiming at the problem that the service life of the wall is reduced due to the leakage of the wall after a waterproof layer is worn, wherein the technical scheme is as follows: the method comprises the following steps: s1, pouring an impervious base layer, comprising: s11, building a basic layer template; s12, pouring impervious concrete to the elevation of the base layer, and forming the impervious base layer after initial setting; s2, building a steel bar framework, which specifically comprises the following steps: fixing a steel bar framework in the initially-solidified anti-permeability base layer, wherein the bottom of the steel bar framework is higher than that of the anti-permeability base layer; s3, building a wall template; s4, pouring a wall body; s5, disassembling the wall template after the wall is initially set; s6, spraying nano hydrophobic powder to the wall surface immediately after the wall body template is disassembled; s7, spraying a waterproof adhesive to the wall surface; utilize impervious concrete to make the basic unit in order to keep apart groundwater, cooperation steel framework bottom is higher than impervious basic unit bottom, is difficult for being permeated to steel framework department by groundwater for steel framework is difficult for the corrosion, prolongs the life of wall body.
Description
Technical Field
The invention relates to the field of building construction, in particular to a construction method of a moisture-proof wall.
Background
The moisture-proof wall body is mainly used for resisting corrosion of underground water or external water to the wall body and reducing the corrosion of a steel bar framework caused by the permeation of water to the wall body.
Usually, during construction of the moisture-proof wall, the waterproof layers are coated on the bottom and the wall surface, so that moisture is not easy to contact with the concrete wall body and further not easy to permeate into concrete.
After the service life is long, the waterproof layer is stressed for a long time and is easy to wear, once the waterproof layer is worn, the wall body is easy to leak, the service life of the wall body is shortened, and therefore the improvement space is provided.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide the construction method of the moistureproof wall, which has the advantages of difficult occurrence of wall leakage and long service life of the wall.
In order to achieve the purpose, the invention provides the following technical scheme:
a construction method of a damp-proof wall body comprises the following steps:
s1, pouring an impervious base layer, comprising:
s11, building a basic layer template;
s12, pouring impervious concrete to the elevation of the base layer, and forming the impervious base layer after initial setting;
s2, building a steel bar framework, which specifically comprises the following steps:
fixing a steel bar framework in the initially-solidified anti-permeability base layer, wherein the bottom of the steel bar framework is higher than that of the anti-permeability base layer;
s3, building a wall template;
s4, pouring the wall body, including:
s41, pouring impervious concrete to the elevation of the wall body;
s42, primary tamping;
s43, standing for 40-60min, and pouring impervious concrete to the elevation of the wall body;
s44, tamping again;
s5, disassembling the wall template after the wall is initially set;
s6, spraying nano hydrophobic powder to the wall surface immediately after the wall body template is disassembled;
and S7, spraying waterproof adhesive to the wall surface.
By adopting the technical scheme, the impervious concrete is used as the base layer to isolate underground water, and meanwhile, the bottom of the steel bar framework is matched to be higher than the bottom of the impervious base layer, so that the steel bar framework cannot stretch out of the lower part of the impervious base layer, the bottom of the steel bar framework is protected by the impervious base layer and is not easy to permeate to the steel bar framework by the underground water, the steel bar framework is not easy to rust, and the service life of the wall body is prolonged;
the wall body is formed by pouring impervious concrete, so that the concrete structure of the wall body is not easy to seep, water is not easy to seep into the steel bar framework, the steel bar framework is not easy to rust, and the service life of the wall body is longer;
the nanometer hydrophobic powder is sprayed on the wall surface of the wall body after initial setting, and is adhered to the wall surface by the viscosity of concrete, and because the nanometer powder has small particle size and small gaps, a compact waterproof layer is formed after the nanometer powder is uniformly sprayed on the front surface, the anti-permeability capability of the wall body is further improved, and the moisture-proof effect is good;
through spraying waterproof adhesive again behind the nanometer hydrophobic powder, utilize waterproof adhesive as the waterproof layer of outermost periphery, dampproofing effect preferred, utilize the adhesive to make the nano mountain flour combine more steadily simultaneously, form stable and compact waterproof layer, difficult spalling, difficult fracture, stability preferred, and then guarantee stable dampproofing effect.
The invention is further configured to: in the step S6, the nano hydrophobic powder is nano ore powder.
Through adopting above-mentioned technical scheme, through nanometer ore powder reinforcement wall body for dampproofing wall body's compressive strength further improves, improves dampproofing wall body's structural stability.
The invention is further configured to: the nano ore powder is prepared from nano granite powder, nano basalt powder, nano dolomite powder, nano zircon powder and nano graphite powder according to the weight ratio of 1: 1.2: 0.8: 0.3: 0.2 in proportion.
Through adopting above-mentioned technical scheme for the effect of nanometer ore powder reinforcement dampproofing wall body is better, makes the structural stability of wall body better.
The invention is further configured to: in step S7, the waterproof adhesive is a polyurethane adhesive.
Through adopting above-mentioned technical scheme for waterproof adhesive has better elasticity, cushions external impact to a certain extent, better protection wall body, and polyurethane adhesive is difficult ageing difficult degradation, and is lasting stable, viscidity preferred, makes waterproof adhesive connect the stability preferred of nanometer ore powder.
The invention is further configured to: the impervious concrete comprises the following components in parts by weight:
100 parts of Portland cement;
250 portions and 300 portions of coarse aggregate;
200 portions and 250 portions of fine aggregate;
50-100 parts of nano filler;
25-30 parts of glass fiber
90-110 parts of water;
the length of the glass fiber is 0.2-0.5 mm.
By adopting the technical scheme, the nano filler is added and filled in the gap formed by the fine aggregate and the coarse aggregate, so that the impervious concrete is more compact and has better impervious effect;
by adding the glass fiber, the crack resistance effect is achieved, meanwhile, the gap formed by the fine aggregate and the coarse aggregate is filled with the shorter glass fiber, so that the impervious concrete is further compact, the impervious effect is better, a steel bar framework is protected, the moisture resistance of the wall is durable and stable, and the service life is longer.
The invention is further configured to: the nano filler is nano talcum powder.
By adopting the technical scheme, the talcum powder is smooth, the friction coefficient is low, so that the nano filler can easily flow in the impervious concrete, the nano filler can be easily and uniformly dispersed in the impervious concrete and filled in gaps of fine aggregates and coarse aggregates, the effect of improving the impermeability of the wall is better, and the moisture-proof effect of the wall is better.
The invention is further configured to: the impervious concrete also comprises the following components in parts by weight:
15-20 parts of polyurethane adhesive.
By adopting the technical scheme, gaps of the coarse aggregates and the fine aggregates are further filled by the polyurethane adhesive, so that the compactness of the impervious concrete is further improved, the moisture resistance of the wall body is further improved, the steel bar framework is not easy to rust, and the stability is improved.
The invention is further configured to: the impervious concrete also comprises the following components in parts by weight:
5-10 parts of octaethylporphyrin.
By adopting the technical scheme, the frost resistance of the impervious concrete is improved, so that the frost resistance of the impervious concrete is improved, a wall body prepared from the impervious concrete is not prone to frost cracking, the anti-freezing concrete is better suitable for cold regions, and the applicability of the impervious concrete is wider.
The invention is further configured to: the preparation method of the impervious concrete comprises the following steps:
a. mixing portland cement and water to form a cement slurry;
b. adding nano filler into the cement slurry and uniformly stirring to form a premix;
c. and adding the fine aggregate and the coarse aggregate into the premix and uniformly stirring to form the impervious concrete.
By adopting the technical scheme, the nano filler is uniformly mixed with the cement slurry and then added with the coarse aggregate and the fine aggregate, so that the nano filler is uniformly distributed in the cement slurry better, the nano filler is easier to fill gaps between the coarse aggregate and the fine aggregate, the anti-permeability effect is improved, and the wall body has better moisture resistance.
In conclusion, the invention has the following beneficial effects:
1. the anti-permeability concrete is used as a base layer to isolate underground water, and meanwhile, the bottom of the steel bar framework is matched to be higher than the bottom of the anti-permeability base layer, so that the steel bar framework cannot stretch out of the lower part of the anti-permeability base layer, the bottom of the steel bar framework is protected by the anti-permeability base layer and is not easy to permeate to the steel bar framework by the underground water, the steel bar framework is not easy to rust, and the service life of the wall;
2. the nanometer hydrophobic powder is sprayed on the wall surface of the wall body after initial setting, and is adhered to the wall surface by the viscosity of concrete, and because the nanometer powder has small particle size and small gaps, a compact waterproof layer is formed after the nanometer powder is uniformly sprayed on the front surface, the anti-permeability capability of the wall body is further improved, and the moisture-proof effect is good;
3. through spraying waterproof adhesive again behind the nanometer hydrophobic powder, utilize waterproof adhesive as the waterproof layer of outermost periphery, dampproofing effect preferred, utilize the adhesive to make the nano mountain flour combine more steadily simultaneously, form stable and compact waterproof layer, difficult spalling, difficult fracture, stability preferred, and then guarantee stable dampproofing effect.
Drawings
FIG. 1 is a schematic flow chart of the construction method of the moisture-proof wall body in the invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples.
In the following examples, the portland cement was made of PO42.5R ordinary portland cement sold by luze building materials ltd of Dongguan;
in the following examples, crushed stone sold by Asahi building materials Co., Ltd, Hebeike was used as the coarse aggregate;
in the following examples, the fine aggregate is river sand sold by eight metallurgy engineering practice Limited of Shenzhen city;
in the following examples, the nano talc powder is 3000 mesh talc powder sold by Fuhuan Huayun commercial Co Ltd of Changzhou city;
in the following examples, the polyurethane adhesive is a foamless two-component polyurethane adhesive sold by Shanghai Hao republic of chemical industry, Inc.;
in the following examples, octaethylporphyrin CAS, sold by Wuhananabai pharmaceuticals, Inc., was used as octaethylporphyrin CAS: 2683-82-1;
in the following examples, sodium gluconate sold by Shandongwang chemical Co., Ltd is used as the water reducing agent;
in the following examples, the nano granite powder was prepared by grinding yellow rust granite sold by Qingdao Jinaoshi Limited;
in the following examples, the nano basalt stone powder is ground by using galloping rock sold by commercial ltd in southwestern city;
in the following examples, the nano dolomite powder was prepared by grinding dolomite sold by Qingdao Yuzhou chemical Co., Ltd;
in the following examples, nano zircon powder was produced by grinding natural red zircon mineral crystals sold by Anju Jewelry Co., Ltd, east China sea;
in the following examples, the nano graphite powder was prepared by grinding graphite powder sold by Qinglin graphite Co.
Example 1
An impervious concrete, the preparation method of the impervious concrete is as follows:
a. adding 100kg of Portland cement, 90kg of water and 11kg of water reducing agent into a stirring kettle, stirring at the rotating speed of 60r/min for 5min to form cement slurry;
b. grinding the nano talcum powder to powder with the particle size of 10-100nm by a grinding device, then adding 50kg of the nano talcum powder into the cement slurry, stirring at the rotating speed of 50r/min for 8min to form a premix;
c. 200kg of fine aggregate and 250kg of coarse aggregate are added into the premix, the rotation speed is 45r/min, the stirring is carried out for 15min, the impervious concrete is formed, the rotation speed is 15r/min, and the stirring is continuously carried out until the use is finished.
Example 2
An impervious concrete, the preparation method of the impervious concrete is as follows:
a. adding 100kg of Portland cement, 100kg of water and 10kg of water reducing agent into a stirring kettle, stirring at the rotating speed of 60r/min for 5min to form cement slurry;
b. grinding the nano talcum powder to powder with the particle size of 10-100nm by a grinding device, then adding 75kg of the nano talcum powder into the cement slurry, stirring at the rotating speed of 50r/min for 8min to form a premix;
c. 225kg of fine aggregate and 275kg of coarse aggregate are added into the premix, the mixture is stirred for 15min at the rotating speed of 45r/min to form the impervious concrete, the rotating speed of 15r/min is kept stirring until the use is finished.
Example 3
An impervious concrete, the preparation method of the impervious concrete is as follows:
a. adding 100kg of Portland cement, 110kg of water and 9kg of water reducing agent into a stirring kettle, stirring at the rotating speed of 60r/min for 5min to form cement slurry;
b. grinding the nano talcum powder to powder with the particle size of 10-100nm by a grinding device, then adding 100kg of the nano talcum powder into the cement slurry, stirring at the rotating speed of 50r/min for 8min to form a premix;
c. adding 250kg of fine aggregate and 300kg of coarse aggregate into the premix, stirring for 15min at the rotating speed of 45r/min to form the impervious concrete, and continuously stirring at the rotating speed of 15r/min until the use is finished.
Example 4
An impervious concrete, the preparation method of the impervious concrete is as follows:
a. adding 100kg of Portland cement, 95kg of water and 10kg of water reducing agent into a stirring kettle, stirring at the rotating speed of 60r/min for 5min to form cement slurry;
b. grinding the nano talcum powder to powder with the particle size of 10-100nm by a grinding device, then adding 80kg of the nano talcum powder into the cement slurry, stirring at the rotating speed of 50r/min for 8min to form a premix;
c. and adding 220kg of fine aggregate and 280kg of coarse aggregate into the premix, stirring for 15min at the rotating speed of 45r/min to form the impervious concrete, and continuously stirring at the rotating speed of 15r/min until the use is finished.
Example 5
An impervious concrete, the preparation method of the impervious concrete is as follows:
a. adding 100kg of Portland cement, 95kg of water, 10kg of water reducing agent, 15kg of polyurethane adhesive and 5kg of octaethyl porphin into a stirring kettle, stirring at the rotating speed of 60r/min for 5min to form cement slurry;
b. grinding the nano talcum powder to powder with the particle size of 10-100nm by a grinding device, then adding 80kg of the nano talcum powder into the cement slurry, stirring at the rotating speed of 50r/min for 8min to form a premix;
c. and adding 220kg of fine aggregate and 280kg of coarse aggregate into the premix, stirring for 15min at the rotating speed of 45r/min to form the impervious concrete, and continuously stirring at the rotating speed of 15r/min until the use is finished.
Example 6
An impervious concrete, the preparation method of the impervious concrete is as follows:
a. adding 100kg of Portland cement, 95kg of water, 10kg of water reducing agent, 17.5kg of polyurethane adhesive and 7.5kg of octaethyl porphin into a stirring kettle, stirring at the rotating speed of 60r/min for 5min to form cement slurry;
b. grinding the nano talcum powder to powder with the particle size of 10-100nm by a grinding device, then adding 80kg of the nano talcum powder into the cement slurry, stirring at the rotating speed of 50r/min for 8min to form a premix;
c. and adding 220kg of fine aggregate and 280kg of coarse aggregate into the premix, stirring for 15min at the rotating speed of 45r/min to form the impervious concrete, and continuously stirring at the rotating speed of 15r/min until the use is finished.
Example 7
An impervious concrete, the preparation method of the impervious concrete is as follows:
a. adding 100kg of Portland cement, 95kg of water, 10kg of water reducing agent, 20kg of polyurethane adhesive and 10kg of octaethyl porphin into a stirring kettle, stirring at the rotating speed of 60r/min for 5min to form cement slurry;
b. grinding the nano talcum powder to powder with the particle size of 10-100nm by a grinding device, then adding 80kg of the nano talcum powder into the cement slurry, stirring at the rotating speed of 50r/min for 8min to form a premix;
c. and adding 220kg of fine aggregate and 280kg of coarse aggregate into the premix, stirring for 15min at the rotating speed of 45r/min to form the impervious concrete, and continuously stirring at the rotating speed of 15r/min until the use is finished.
Example 8
An impervious concrete, the preparation method of the impervious concrete is as follows:
a. adding 100kg of Portland cement, 95kg of water, 10kg of water reducing agent, 18kg of polyurethane adhesive and 6kg of octaethyl porphin into a stirring kettle, stirring at the rotating speed of 60r/min for 5min to form cement slurry;
b. grinding the nano talcum powder to powder with the particle size of 10-100nm by a grinding device, then adding 80kg of the nano talcum powder into the cement slurry, stirring at the rotating speed of 50r/min for 8min to form a premix;
c. and adding 220kg of fine aggregate and 280kg of coarse aggregate into the premix, stirring for 15min at the rotating speed of 45r/min to form the impervious concrete, and continuously stirring at the rotating speed of 15r/min until the use is finished.
Example 9
A construction method of a damp-proof wall body refers to fig. 1, and comprises the following specific steps:
s1, pouring an impervious base layer, comprising:
s11, building a basic layer template, which specifically comprises the following steps:
and (4) building a basic template according to the design size of the wall, wherein the height of the basic template is 10 cm.
S12, pouring impervious concrete to the elevation of the base layer, and forming the impervious base layer after initial setting, wherein the concrete steps are as follows:
and pouring the impervious concrete to the elevation of the impervious base layer, replenishing the impervious concrete to the elevation of the impervious base layer after tamping, wherein the elevation of the impervious base layer is 10cm, and forming the impervious base layer after initial setting of the impervious concrete.
S2, building a steel bar framework, which specifically comprises the following steps:
and fixing a steel bar framework in the initially-solidified anti-permeability base layer, wherein the bottom of the steel bar framework is higher than the bottom of the anti-permeability base layer, and the distance from the bottom of the steel bar framework to the bottom of the anti-permeability base layer is 4 cm.
S3, building a wall template, which comprises the following steps:
and (4) building a wall body template according to the design size of the wall body, wherein the wall body template is abutted against the side wall of the anti-seepage base layer.
S4, pouring the wall body, including:
s41, pouring impervious concrete to the elevation of the wall body.
S42, primary tamping is carried out, and the method specifically comprises the following steps:
the impermeable concrete was tamped by a vibrating rod.
S43, standing for 50min, and pouring the impervious concrete to the elevation of the wall body, and in other embodiments, standing for 40min, 45min, 55min and 60min, and then pouring the impervious concrete.
S44, tamping again, specifically as follows:
the impervious concrete was tamped again by means of a vibrating rod.
S5, disassembling the wall template after initial setting of the wall, and specifically comprising the following steps:
and (5) when the wall reaches the initial setting time, immediately disassembling the wall template.
S6, spraying nano hydrophobic powder to the wall surface immediately after the wall body template is disassembled, and specifically, the method comprises the following steps:
the nano hydrophobic powder is nano ore powder;
the nano ore powder is prepared from nano granite powder, nano basalt powder, nano dolomite powder, nano zircon powder and nano graphite powder according to the weight ratio of 1: 1.2: 0.8: 0.3: 0.2;
the particle size of the nano ore powder is 10-100 nm.
After the wall template is disassembled, spraying the nano ore powder to the wall surface immediately, and adhering the nano ore powder to the wall surface by utilizing the good viscosity of the just-set concrete;
and standing for 90min after uniform spraying, and lightly sweeping the nano ore powder on the surface by using a brush to clean the nano ore powder which is not adhered to the wall surface and only keep the nano ore powder stably adhered to the wall surface.
S7, spraying a waterproof adhesive to the wall surface, which specifically comprises the following steps:
the waterproof adhesive is polyurethane adhesive, after the wall is finally set, the polyurethane adhesive is sprayed on the wall to form a waterproof layer, and the thickness of the waterproof layer is 1 +/-0.1 mm.
In this example, the impermeable concrete of example 8 was used as the impermeable concrete, and in other examples, the impermeable concrete of examples 1 to 7 was used as the impermeable concrete.
Comparative example 1
The difference from example 8 is that:
in step a, the addition of polyurethane adhesive is eliminated.
Comparative example 2
The difference from example 8 is that:
in step a, the addition of octaethyl porphin is eliminated.
Comparative example 3
The difference from example 8 is that:
step b is eliminated.
Experiment 1
The 7d compressive strength (MPa) and 28d compressive strength (MPa) of examples 1 to 8 and comparative examples 1 to 3 were measured according to GB/T50081-2002 Standard test method for mechanical Properties of ordinary concrete.
Experiment 2
The impermeability and frost resistance of examples 1 to 8 and comparative examples 1 to 3 were tested according to the water penetration resistance test in GB/T50082-2009 Standard test methods for Long-term Performance and durability of ordinary concrete.
Experiment 3
The 7d compressive strength (MPa), the 28d compressive strength (MPa), the anti-permeability grade and the anti-freezing grade of the moistureproof wall constructed in the example 9 are detected according to the standard of the test method for mechanical properties of ordinary concrete in GB/T50081-2002 and the water-permeation resistance test in the standard of the test method for long-term performance and durability of ordinary concrete in GB/T50082-2009.
The specific experimental data are shown in Table 1
TABLE 1
As can be seen from table 1, by comparing the data of comparative example 1 with the data of example 8, the addition of the polyurethane adhesive to the impervious concrete has the advantages of limited improvement of the impervious grade of the impervious concrete sample, and a certain improvement of the compressive strength without influence on the anti-freezing grade, thereby enabling the wall to have better moisture resistance and structural stability.
By comparing the data of the comparative example 2 with the data of the example 8, the addition of the octaethylporphyrin to the impervious concrete has no obvious influence on the compressive strength and the impervious grade of the impervious concrete sample, effectively improves the frost resistance grade of the impervious concrete sample, improves the frost resistance of a wall body, is just suitable for cold regions, and has wide applicability.
Compared with the embodiment 8, the nano talcum powder is added into the impervious concrete, so that the compressive strength of the impervious concrete sample is greatly improved, the impervious grade of the impervious concrete sample is improved, the frost resistance grade of the impervious concrete sample is not obviously influenced, the impermeability of the wall is better, water is not easy to permeate into the wall to corrode a steel reinforcement frame, and the service life of the wall is longer.
Compared with the embodiment 8, the embodiment 9 has the advantages that the nano ore powder is sprayed on the surface of the wall body, so that the compressive strength of the wall body can be effectively improved, the anti-permeability capability of the wall body can be better ensured, the wall body can be better protected, and the service life of the wall body can be prolonged.
The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.
Claims (9)
1. A construction method of a damp-proof wall body is characterized by comprising the following steps: the method comprises the following steps:
s1, pouring an impervious base layer, comprising:
s11, building a basic layer template;
s12, pouring impervious concrete to the elevation of the base layer, and forming the impervious base layer after initial setting;
s2, building a steel bar framework, which specifically comprises the following steps:
fixing a steel bar framework in the initially-solidified anti-permeability base layer, wherein the bottom of the steel bar framework is higher than that of the anti-permeability base layer;
s3, building a wall template;
s4, pouring the wall body, including:
s41, pouring impervious concrete to the elevation of the wall body;
s42, primary tamping;
s43, standing for 40-60min, and pouring impervious concrete again to reach the elevation of the wall body;
s44, tamping again;
s5, disassembling the wall template after the wall is initially set;
s6, spraying nano hydrophobic powder to the wall surface immediately after the wall body template is disassembled;
and S7, spraying waterproof adhesive to the wall surface.
2. The construction method of a moisture-proof wall as claimed in claim 1, wherein: in the step S6, the nano hydrophobic powder is nano ore powder.
3. The construction method of a moisture-proof wall as claimed in claim 2, wherein: the nano ore powder is prepared from nano granite powder, nano basalt powder, nano dolomite powder, nano zircon powder and nano graphite powder according to the weight ratio of 1: 1.2: 0.8: 0.3: 0.2 in proportion.
4. A method of constructing a moisture resistant wall as claimed in claim 3, wherein: in step S7, the waterproof adhesive is a polyurethane adhesive.
5. The construction method of a moisture-proof wall as claimed in claim 4, wherein: the impervious concrete comprises the following components in parts by weight:
100 parts of Portland cement;
250 portions and 300 portions of coarse aggregate;
200 portions and 250 portions of fine aggregate;
50-100 parts of nano filler;
25-30 parts of glass fiber;
90-110 parts of water;
the length of the glass fiber is 0.2-0.5 mm.
6. The construction method of a moisture-proof wall as claimed in claim 5, wherein: the nano filler is nano talcum powder.
7. The construction method of a moisture-proof wall as claimed in claim 5, wherein: the impervious concrete also comprises the following components in parts by weight:
15-20 parts of polyurethane adhesive.
8. The construction method of a moisture-proof wall as claimed in claim 5, wherein: the impervious concrete also comprises the following components in parts by weight:
5-10 parts of octaethylporphyrin.
9. The construction method of a moisture-proof wall as claimed in claim 5, wherein: the preparation method of the impervious concrete comprises the following steps:
a. mixing portland cement and water to form a cement slurry;
b. adding nano filler into the cement slurry and uniformly stirring to form a premix;
c. and adding the fine aggregate and the coarse aggregate into the premix and uniformly stirring to form the impervious concrete.
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| CN111379337B (en) * | 2020-03-24 | 2021-04-23 | 广州盈德建筑工程有限公司 | Secondary structure anti-seepage and anti-leakage construction method |
| CN113912371A (en) * | 2021-11-18 | 2022-01-11 | 昆明理工泛亚设计集团有限公司 | Anti-cracking waterproof rammed earth wall and construction method thereof |
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| CN101338595B (en) * | 2008-08-12 | 2010-07-28 | 中建三局第三建设工程有限责任公司 | Construction method of haydite dry concrete wall |
| CN102720217A (en) * | 2012-06-12 | 2012-10-10 | 浙江城建建设集团有限公司 | Basement watertightness structure and construction method thereof |
| CN103193423B (en) * | 2013-03-18 | 2015-02-25 | 黎彦廷 | Waterproof anti-permeable agent and waterproof anti-permeable concrete prepared by utilizing same |
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