CN212129795U

CN212129795U - Dampproofing anti ground structure that splits

Info

Publication number: CN212129795U
Application number: CN202020239467.2U
Authority: CN
Inventors: 张杰鹏; 富尧
Original assignee: Huazhuang Brothers Beijing Decoration Engineering Co ltd
Current assignee: Huazhuang Brothers Beijing Decoration Engineering Co ltd
Priority date: 2020-03-02
Filing date: 2020-03-02
Publication date: 2020-12-11
Anticipated expiration: 2030-03-02

Abstract

The utility model relates to the field of building engineering, in particular to a moisture-proof and crack-resistant ground structure, which comprises a rammed ground base layer, wherein a green gravel cushion layer is paved on the rammed ground base layer, a leveling layer is arranged on the green gravel cushion layer, a fine stone concrete moisture-proof layer is arranged on the leveling layer, a fine sand layer is paved on the fine stone concrete moisture-proof layer, a flexible moisture-proof layer is paved on the fine sand layer, a concrete hardened layer is paved on the flexible moisture-proof layer, a fiber mesh cloth is paved on the concrete hardened layer, and a crack-resistant mortar leveling layer is paved on the fiber mesh cloth; the green gravel cushion layer is subjected to joint filling through coarse sand; the moisture return problem is solved by paving the fine aggregate concrete moisture-proof layer on the leveling layer and paving the flexible moisture-proof layer on the fine sand layer.

Description

Dampproofing anti ground structure that splits

The technical field is as follows:

the utility model relates to a building engineering field especially relates to a dampproofing anti ground structure that splits.

Background art:

in the building engineering, the problems of ground moisture regain and crack occurrence are common phenomena in construction, and can bring inconvenience and rework to residents if the problems are light, and can cause ground subsidence, building collapse and the like if the problems are heavy; the phenomena of moisture regain, cracks and the like are related to climate, geographical position and the like under objective conditions, particularly in the south of China, as more rainwater and more humid climate are adopted in summer, a layer of water dew often appears on the indoor ground layer before and after rain, and great inconvenience is brought to life; subjectively, the method has a great relationship with building construction, and the problems can be caused by unreasonable arrangement and material selection of a moisture-proof layer and an anti-cracking layer in the prior art.

In view of this, the present invention is proposed.

The utility model has the following contents:

the utility model provides a dampproofing anti-crack ground structure that moisture resistance is good, reasonable in design.

The utility model provides a dampproofing anti ground structure that splits, including ramming ground basic unit, ramming ground basic unit upper berth is equipped with blue or green rubble bed course, is provided with the screed-coat on the blue or green rubble bed course, be provided with the pea gravel concrete dampproof course on the screed-coat, pea gravel concrete dampproof course upper berth is equipped with thin sand bed, thin sand bed upper berth is equipped with flexible dampproof course, concrete sclerosis layer is laid to flexible dampproof course, concrete sclerosis layer upper berth has fibre net cloth, anti-crack mortar screed-coat has been smeared on the fibre net cloth, blue or green rubble bed course is caulked through the coarse sand.

Adopt above-mentioned scheme, through setting up rigid dampproof course in the lower part respectively, and flexible dampproof course setting has also prevented when the rational design on upper portion promotes the humidity resistance the destruction of dampproof course owing to wet degree and bearing pressure degree are progressively reduced from bottom to top successive layer, so adopt the lower floor to be rigid fine aggregate concrete dampproof course, and the mode that the upper strata is flexible dampproof course is under construction can be fine protects the dampproof course. Firstly, raising the rammed ground base layer by using a green gravel cushion layer and reducing water vapor permeation, and then filling the generated gaps with coarse sand, such as coarse yellow sand; the leveling layer can be leveled by adopting waterproof mortar, and the mix proportion of the waterproof mortar generally adopts cement: sand 1: 2.5-3, the water cement ratio is between 0.5-0.55, the cement is 42.5 grade ordinary portland cement, the sand is well graded medium sand, before painting, a layer of pure water mortar with low water cement ratio (sometimes polymer cement mortar) is smeared on the wet and clean ground, then a layer of waterproof mortar is smeared, before initial setting, a wooden trowel is used for compacting once, and the second, third and fourth layers are operated in the same way. The last layer is calendered. When in painting, the thickness of each layer is about 5mm, and the thickness of each layer is about 20-30 mm when 4-5 layers are painted. After painting, the maintenance must be strengthened to prevent cracking, and the waterproof mortar can adopt an additive waterproof agent or a polymer.

The fine sand layer adopts fine sand with the grain diameter of 0.25mm-0.125mm, which is equivalent to the cushion layer of the flexible waterproof layer, and prevents the flexible waterproof layer from being directly paved on a rigid layer surface to be damaged; the concrete hardened layer can be C20 grade concrete, the concrete hardened layer is used as a rigid layer and can effectively resist settlement, and the anti-crack mortar is prepared by adding water into an anti-crack agent prepared from a polymer emulsion and an additive, cement and sand according to a certain proportion and stirring, and can meet certain deformation and keep non-cracking.

Preferably, the fine aggregate concrete moisture-proof layer is provided with a steel bar net piece.

By adopting the scheme, the concrete without the reinforcing bars is low in rigidity and easy to crack; the arrangement of the reinforcing mesh can increase the overall rigidity and strength. During construction, the surface of the steel bar is clean, adhered oil stain, soil and rust must be cleaned before use, and rust removal can be realized by combining a cold drawing process; the steel bar can be straightened mechanically or manually. The straightened reinforcing steel bar cannot have local bending, dead bending and small wave shape, and the surface flaw of the reinforcing steel bar cannot reduce the section of the reinforcing steel bar by 5 percent; the steel bars are cut according to the number, the diameter, the length and the number of the steel bars, the length is matched, the long material is cut off first, and then the short material is cut off, so that the short ends of the steel bars are reduced and shortened as much as possible, and the steel is saved. The lashing joints of the reinforcing bars should comply with the following regulations: the distance between the tail end of the lap joint length and the bending position of the reinforcing steel bar is not less than 10 times of the diameter of the reinforcing steel bar, and the joint is not suitable to be positioned at the maximum bending moment of the component; in the tensioned area, the tail end of the I-level steel bar binding joint is required to be provided with a hook, and the II-level steel bar is not required to be provided with the hook; the lap joint of the steel bars is firmly tied by iron wires at the center and two ends; the lap joint length of the tension steel bar binding joint is in accordance with the structural design requirement; the thickness of the concrete protective layer of the stressed steel bar is in accordance with the structural design requirement; before the plate ribs are bound, lines need to be sprung according to the requirement of a design drawing, and the quality is controlled by binding according to the lines.

Preferably, the flexible moisture barrier is a geomembrane moisture barrier.

By adopting the scheme, the geomembrane moisture-proof layer has the advantages of high quality prevention and seepage prevention capability, and the upstream and the downstream are required to be carried out during construction; and (4) manually paving the side slope and the bottom of the groove in a partitioning manner in sequence. When in laying, the film should be properly relaxed, 3 to 5 percent of margin should be reserved, and a protruding wave-shaped relaxation mode is made to adapt to temperature change and foundation settlement and avoid artificial hard folding damage; and laying the composite geomembrane on the slope surface, wherein the arrangement direction of the seams is parallel to or vertical to the maximum slope line and the composite geomembrane is laid in the order from top to bottom. The curvature of the slope should join the membrane to the seam.

Preferably, the geomembrane moisture barrier is a high density polyethylene geomembrane.

By adopting the scheme, the high-density polyethylene geomembrane has excellent seepage-proofing and corrosion-resisting properties and good chemical stability, and can be processed according to the actual engineering requirements.

Furthermore, an anticorrosive layer is arranged on the anti-crack mortar leveling layer.

By adopting the scheme, the corrosion-resistant ground structure respectively blocks corrosion from indoor and underground through the anticorrosive coating, avoids corrosive substances from penetrating the ground, prevents the corrosion of the whole ground, and improves the corrosion resistance.

Furthermore, a bonding layer is arranged on the anticorrosive layer, and a finishing coat is paved on the bonding layer.

By adopting the scheme, the bonding layer can adopt a cement mortar leveling layer with the thickness of 5mm-10mm, and the veneer layer can adopt the methods of paving floor tiles, wood floors and the like.

Preferably, the fine aggregate concrete moisture barrier is 30-50m thick.

Preferably, the thickness of the concrete hardened layer is 40-50 mm.

Preferably, the anticorrosive layer is formed by paving epoxy furan daub.

By adopting the scheme, the epoxy furan daub has good corrosion resistance and can prevent various acidic and basic substances from being corroded.

Further, the flexible moisture-proof layer is a felt moisture-proof layer.

By adopting the scheme, the bonding layer of the felt can be arranged at the corresponding position of the bottom of the peripheral wall, the surface of the base layer is preferably dried, the two bonding layers of the base oil are sprayed and cooled firstly, then lines are flicked according to the specification and the overlapping requirement of the coiled materials, the coiled materials are laid according to the lines in a layered mode, the thickness of the asphalt cementing materials which are laid and adhered to the coiled materials is generally 1.5-2.5 mm, the long edge of the overlapping length of the coiled materials is not less than 100mm, the short edge of the overlapping length of the coiled materials is not less than 150mm, the seams of the upper layer and the lower layer and two adjacent coiled materials are staggered; at the corners of the plane and the vertical surface, the seam of the coiled material should be left on the plane at a distance of no less than 600mm from the vertical surface, and additional layers should be laid at all corners. The additional layer may be formed from two layers of the same web material or from a layer of higher tensile strength web material. The additional layer should be carefully adhered to the shape of the reinforcement.

The utility model has the advantages that: the fine stone concrete moisture-proof layer is laid on the leveling layer, so that the problem of moisture regain of the compacted ground base layer is solved, and the moisture rebound is reduced; the problem of moisture inversion is further solved by paving a flexible moisture-proof layer on the fine sand layer; the green gravel cushion layer is subjected to joint filling by adopting coarse sand, so that the laying problem of the leveling layer is solved; the arrangement of the reinforcing mesh solves the problem that the fine aggregate concrete moisture-proof layer is easy to crack, and achieves the technical effects of enhancing rigidity and stability; the problem that the ground is damaged in a corrosive environment is solved by the aid of the anticorrosive layer, and the technical effects of rigidity and stability are enhanced.

Description of the drawings:

in order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic view of an embodiment of the present invention;

FIG. 2 is a schematic view of another embodiment of the present invention;

description of reference numerals:

through the above reference sign explanation, combine the embodiment of the utility model, can more clearly understand and explain the technical scheme of the utility model.

1-rammed ground base layer, 2-green gravel cushion layer, 3-leveling layer, 4-fine stone concrete moisture barrier layer, 5-fine sand layer, 7-concrete hardened layer, 8-fiber mesh cloth, 9-anti-crack mortar leveling layer, 10-anticorrosive layer, 11-bonding layer, 12-veneer layer, 41-reinforcing mesh sheet, 61-geomembrane moisture barrier layer and 62-linoleum moisture barrier layer.

The specific implementation mode is as follows:

reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the invention, as detailed in the appended claims.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in this specification and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.

The present invention will be described in detail below by way of examples.

Referring to fig. 1, the utility model provides a pair of dampproofing anti-crack ground structure, including rammed ground basic unit 1, rammed ground basic unit 1 upper berth is equipped with blue or green rubble bed course 2, is provided with screed-coat 3 on blue or green rubble bed course 2, be provided with fine aggregate concrete dampproof course 4 on the screed-coat 3, fine aggregate concrete dampproof course 4 upper berth is equipped with fine sand layer 5, fine sand layer 5 upper berth is equipped with flexible dampproof course, concrete sclerosis layer 7 is laid to flexible dampproof course, concrete sclerosis layer 7 upper berth has fibre net cloth 8, anti-crack mortar screed-coat 9 has been smeared on fibre net cloth 8, blue or green rubble bed course 2 caulk through coarse sand 21.

Adopt above-mentioned scheme, dampproofing anti-crack ground structure has set up two-layer dampproof course, can promote the humidity resistance, because degree of weing and pressure-bearing degree are progressively reduced from bottom to top the successive layer, so adopt the lower floor to be rigid pea gravel concrete dampproof course 4, the mode that the upper strata is flexible dampproof course is under construction can be fine protect the dampproof course. Firstly, the rammed ground base layer 1 is heightened by a green macadam cushion layer 2 and water vapor permeation is reduced, and then the generated gaps are filled by coarse sand 21, such as coarse yellow sand; leveling layer 3 can adopt waterproof mortar to make level, and waterproof mortar's mix proportion generally adopts cement: sand 1: 2.5-3, the water cement ratio is between 0.5-0.55, the cement is 42.5 grade ordinary portland cement, the sand is well graded medium sand, before painting, a layer of pure water mortar with low water cement ratio (sometimes polymer cement mortar) is smeared on the wet and clean ground, then a layer of waterproof mortar is smeared, before initial setting, a wooden trowel is used for compacting once, and the second, third and fourth layers are operated in the same way. The last layer is calendered. When in painting, the thickness of each layer is about 5mm, and the thickness of each layer is about 20-30 mm when 4-5 layers are painted. After painting, the maintenance must be strengthened to prevent cracking, and the waterproof mortar can adopt an additive waterproof agent or a polymer.

The fine sand layer 4 adopts fine sand with the grain diameter of 0.25mm-0.125mm, which is equivalent to a cushion layer of the flexible waterproof layer, and prevents the flexible waterproof layer from being directly paved on a rigid layer surface to be damaged; the concrete hardened layer 7 can be C20 grade concrete, the concrete hardened layer 7 is used as a rigid layer and can effectively resist settlement, and the anti-crack mortar is prepared by adding water into an anti-crack agent prepared from a polymer emulsion and an additive, cement and sand according to a certain proportion and stirring, can meet certain deformation and can be kept from cracking.

Referring to fig. 1, the fine aggregate concrete moisture barrier is provided with a steel mesh 41.

By adopting the scheme, the concrete without the reinforcing bars is low in rigidity and easy to crack; the arrangement of the reinforcing mesh 41 can increase the overall rigidity and strength. During construction, the surface of the steel bar is clean, adhered oil stain, soil and rust must be cleaned before use, and rust removal can be realized by combining a cold drawing process; the steel bar can be straightened mechanically or manually. The straightened reinforcing steel bar cannot have local bending, dead bending and small wave shape, and the surface flaw of the reinforcing steel bar cannot reduce the section of the reinforcing steel bar by 5 percent; the steel bars are cut according to the number, the diameter, the length and the number of the steel bars, the length is matched, the long material is cut off first, and then the short material is cut off, so that the short ends of the steel bars are reduced and shortened as much as possible, and the steel is saved. The lashing joints of the reinforcing bars should comply with the following regulations: the distance between the tail end of the lap joint length and the bending position of the reinforcing steel bar is not less than 10 times of the diameter of the reinforcing steel bar, and the joint is not suitable to be positioned at the maximum bending moment of the component; in the tensioned area, the tail end of the I-level steel bar binding joint is required to be provided with a hook, and the II-level steel bar is not required to be provided with the hook; the lap joint of the steel bars is firmly tied by iron wires at the center and two ends; the lap joint length of the tension steel bar binding joint is in accordance with the structural design requirement; the thickness of the concrete protective layer of the stressed steel bar is in accordance with the structural design requirement; before the plate ribs are bound, lines need to be sprung according to the requirement of a design drawing, and the quality is controlled by binding according to the lines.

Referring to fig. 1, the flexible moisture barrier is a geomembrane moisture barrier 61.

By adopting the scheme, the geomembrane moisture-proof layer 61 has the advantages of high quality prevention and seepage prevention capability, and the upstream and the downstream are required to be carried out during construction; and (4) manually paving the side slope and the bottom of the groove in a partitioning manner in sequence. When in laying, the film should be properly relaxed, 3 to 5 percent of margin should be reserved, and a protruding wave-shaped relaxation mode is made to adapt to temperature change and foundation settlement and avoid artificial hard folding damage; and laying the composite geomembrane on the slope surface, wherein the arrangement direction of the seams is parallel to or vertical to the maximum slope line and the composite geomembrane is laid in the order from top to bottom. The curvature of the slope should join the membrane to the seam.

Referring to fig. 1, the geomembrane moisture barrier is a high density polyethylene geomembrane.

Referring to fig. 1, an anticorrosive layer 10 is arranged on the anti-crack mortar leveling layer 9.

Referring to fig. 1, a bonding layer 11 is arranged on the corrosion-resistant layer 10, and a finishing layer 12 is laid on the bonding layer 11.

By adopting the scheme, the bonding layer 11 can adopt a cement mortar leveling layer with the thickness of 5mm-10mm, and the finish coat 122 can adopt methods of paving tiles, wood floors and the like.

The thickness of the fine aggregate concrete moisture-proof layer 4 is 30-50 m.

The thickness of the concrete hardened layer 7 is 40-50 mm.

Referring to fig. 1, the corrosion protection layer 10 is formed by spreading epoxy furan daub.

In some other embodiments of the present invention, as shown with reference to fig. 2, the flexible moisture barrier is a linoleum moisture barrier 62.

It should be noted that, for those skilled in the art, without departing from the principle of the present invention, several improvements and modifications can be made to the present invention, and these improvements and modifications also fall into the protection scope of the claims of the present invention.

Claims

1. A dampproofing anti-crack ground structure which characterized in that: the anti-cracking mortar leveling layer is characterized by comprising a rammed ground base layer (1), wherein a green gravel cushion layer (2) is paved on the rammed ground base layer (1), a leveling layer (3) is arranged on the green gravel cushion layer (2), a fine aggregate concrete moisture-proof layer (4) is arranged on the leveling layer (3), a fine sand layer (5) is paved on the fine aggregate concrete moisture-proof layer (4), a flexible moisture-proof layer is paved on the fine sand layer (5), a concrete hardening layer (7) is paved on the flexible moisture-proof layer, fiber gridding cloth (8) is paved on the concrete hardening layer (7), and an anti-cracking mortar leveling layer (9) is paved on the fiber gridding cloth (8); and the green gravel cushion layer (2) is subjected to gap filling through coarse sand (21).

2. The moisture-proof crack-resistant ground structure according to claim 1, wherein: and a steel bar mesh (41) is arranged in the fine aggregate concrete moisture-proof layer.

3. The moisture-proof crack-resistant ground structure according to claim 2, wherein: the flexible moisture-proof layer is a geomembrane moisture-proof layer (61).

4. The moisture-proof crack-resistant ground structure according to claim 3, wherein: the geomembrane moisture-proof layer is a high-density polyethylene geomembrane.

5. The moisture-proof crack-resistant ground structure according to claim 3, wherein: the flexible moisture-proof layer is a felt moisture-proof layer (62).

6. The moisture-proof crack-resistant ground structure according to any one of claims 1 to 5, wherein: and an anticorrosive layer (10) is arranged on the anti-cracking mortar leveling layer (9).

7. The moisture-proof crack-resistant ground structure according to claim 6, wherein: the anticorrosive coating (10) is provided with a bonding layer (11), and a finishing coat (12) is paved on the bonding layer (11).

8. The moisture-proof crack-resistant ground structure according to claim 6, wherein: the thickness of the fine aggregate concrete moisture-proof layer (4) is 30-50 mm.

9. The moisture-proof crack-resistant ground structure according to claim 6, wherein: the thickness of the concrete hardened layer (7) is 40-50 mm.

10. The moisture-proof crack-resistant ground structure according to claim 6, wherein: the anticorrosive layer (10) is formed by paving epoxy furan daub.