Method for damp-proofing of below-grade building

FIELD: constructional engineering.

SUBSTANCE: invention refers to constructional engineering and can be used for building construction and upkeep. Method for damp-proofing of below-grade building includes levelling blanket laid on basement soil, formation of membrane system, formation of protective concrete layer, installation of reinforcing cage, concreting of footing and below-grade filler members. Membrane system is arranged by continuous laying of extended hoses made of polymeric fabrics and fastening them or, alternatively, overlapping at an angle to each other. Hose outflows are placed outside the footing. The footing and below-grade filler members concreted, damp-proof mixture is grouted through outflows to hose cavity pockets to produce impervious beds.

EFFECT: simplified below-grade construction procedure, improved reliability of groundwater protection of both horizontal and vertical footing elements, decreased work content as well as possibility to repair membrane system during building construction and upkeep.

9 cl, 5 dwg, 1 ex

 

The invention relates to the field of construction and can be used during the construction and operation of buildings and structures.

There is a method of waterproofing of underground parts of buildings, structures under slab foundations, including preparation of base, laying a grid of geotextile installation of formwork, laying the coarse aggregate, the injection mortar with the simultaneous effect of pressing pressure, curing concrete, plaster primer /1/.

Known methods of waterproofing of underground parts of buildings and structures, which consists in the passage of the pit, dumping fractionated sand, crushed stone, gravel, concrete preparation and waterproofing membrane surfaced roll, a backing or mechanically fastened materials /2/.

The closest is a method of waterproofing of underground parts of buildings and structures for ground water protection, including laying on the ground levelling layer, forming a waterproofing membrane layers of polymeric material, forming a protective concrete layer, installation of reinforcement cages, concreting of Foundation and enclosing elements of the underground part of a building or structure /3/.

The disadvantages of the known methods is the complexity and duration of the works on waterproofing, is knitted with technological extract stacked layers of the substrate and waterproofing membrane, and also the high requirements for cleanliness of the surface of the substrate (the surface of the substrate must be dry and clean before laying geomembranes), the need for bonding polymeric web materials, the complexity of the repair works during the construction and operation of buildings. In addition, when a waterproofing membrane is overrun waterproofing mixture and the inability to control its propagation direction, the potential for unanticipated maintenance injected hardening of the material.

The technical task of the present invention is the simplification of the construction of the underground part of the building structure by reducing the duration of the waterproofing membrane at increasing the reliability of the ground water protection both horizontal and vertical elements of the Foundation, reducing the complexity and enabling repair of the waterproofing membrane during the construction and operation of buildings, structures.

The problem is solved in such a way that in the method of waterproofing of underground parts of buildings, including laying on the ground levelling layer, forming a waterproofing membrane layer of a polymeric material and forming a protective concrete layer, installation of reinforcement cages, Beto is the key Foundation and enclosing elements of the underground part of the building, structures according to the invention by a leveling layer solid numbers stack long sleeve items from polymer fabrics hosted editions sleeveless outside the Foundation, then formed a protective concrete layer, on which is mounted the armature frame, concreted Foundation and enclosing elements of the underground part of buildings, then through releases into the cavity of the bag elements injected waterproofing mixture for the formation of a waterproof layer. Thus, the alignment layer is performed by gravel, sand or sand and gravel bedding, or in the form of a concrete base or concrete base, covered with a layer of hydrophilic powder such as bentonite clay. For waterproofing of vertical or inclined surfaces of the enclosing elements of the underground part of the building, structure, long sleeve items are placed and fixed on the inside of the casing enclosing elements, with subsequent concreting and injecting waterproofing mixture into the cavity of the bag elements after concrete strength. As a waterproofing mixture into the bag element is injected hardening mixture, such as cement mortar, or grease mixture, for example cold bitumen mastic. Injecting waterproofing mixture produced in the PE the iodine construction and operation of a building or structure. Injecting waterproofing mixture is done once or repeatedly. Before laying the bag element fill hydrophilic powder such as bentonite clay or sticky material, such as cold bitumen mastic. The bag elements are fastened to each other or laid on the ground with overlap each other, and/or filter elements placed on the base in several layers at an angle to each other.

The proposed method differs in that the alignment layer solid numbers stack long sleeve items from polymer fabrics hosted editions sleeveless outside the Foundation, then formed a protective concrete layer, on which is mounted the armature frame, concreted Foundation and enclosing elements of the underground part of buildings, then through releases into the cavity of the bag elements injected waterproofing mixture for the formation of a waterproof layer. When this alignment layer is performed by gravel, sand or sand and gravel bedding, or in the form of a concrete base or concrete base, covered with a layer of hydrophilic powder such as bentonite clay. For waterproofing of vertical or inclined surfaces of underground parts of buildings, structures, long sleeve items are placed and fixed n the inner side of the casing enclosing elements, with the subsequent concreting and injecting waterproofing mixture into the cavity of the bag elements after concrete strength.

The proposed sequence of operations using the extended tubular element made of polymer materials creates convenience in their layout and provides simplification of works on the foundations of buildings and structures and waterproofing membranes. This waterproofing membrane provides reliable waterproofing protection to the Foundation as on a horizontal surface of the pit, and on the vertical surfaces of underground structures of the zero cycle. Thus to create a solid coating on a horizontal surface and to avoid the formation of gaps, the bag elements are laid at an angle to one another and in multiple layers with overlapping, bonding with each other, and the vertical surface is fixed on the formwork underground structures. The proposed method allows to reduce the construction time of the zero cycle of the building, since the formation of the waterproofing membrane may be made regardless of other work on the Foundation and the building itself.

Waterproofing membrane can be arranged as aligned on the ground directly, with sand or gravel, or concrete preparation is VCE. For exceptions filter horizontal groundwater concrete base cover hydrophilic powder. Waterproofing mixture - hardening material or grease mixture is injected at any time after the construction of the base, with repeat injection can be repeatedly. In the case of filling the bag elements of a semi-permeable tissue grease mixture before laying, the latter penetrates into the pores of the bag element and creates a waterproof element for both vertical and horizontal groundwater seepage. Similarly, when the filter element is filled hydrophilic powder, which when soaking groundwater rises and penetrates the pores of the material, getting the waterproof property of the element.

The method is illustrated in the drawings, in which figure 1 presents a section of the building Foundation; figure 2 - cross section a-a figure 1; figure 3 same as figure 1, after the injection waterproofing mixture; 4 - cross section a-a figure 3; figure 5 is a section of the basement, the option of styling the bag elements in several layers.

The underground part of the building consists of ground-base 1, a leveling layer 2 (sandy soil or gravel reservoir drainage), waterproofing membrane 3, from stacked long sleeve elements 4 filled with a waterproofing mixture 5, the protective layer 6 b is a ton of the mixture and mounted on the protective layer 6 of the reinforcement cage 7 concrete Foundation 8.

The method is as follows.

On the subgrade 1 dug pit stack alignment layer 2. Form waterproofing membrane 3 by stacking on the leveling layer of dense rows of long tubular elements 4 made of polymer fabrics. Editions of the ends of the sleeves are placed outside the Foundation. Then formed a protective concrete layer 6 and install reinforcing cages 7 for the concrete Foundation 8 and enclosing elements 9 the underground part of the building structure. After this first editions in the cavity of the bag elements injected waterproofing mixture of 5 for the formation of a waterproof layer.

Example.

After excavation to the design elevation at which it is planned the construction of base slab construction of the zero cycle, and the above-ground part of the building work on the alignment surface of the soil Foundation 1. Levelling layer 2 can be made of gravel, sand or any drainage material or concrete base (training). When forming concrete Foundation suitable for the surface to lay a layer of hydrophilic powder such as bentonite clay, for absorbing excessive moisture during the curing.

Then on the aligned surface of the stacked long sleeve elements 4 made of polymer fabrics. Bag ELEH the coefficients are made, for example, from polypropylene TU-8237-012-58584000-05, the preferred length of 0,4-2,0 m filter elements it is advisable to lay down for a tighter placement in different directions and in several layers (see figure 5)at the ends of the sleeves are placed in such a way that after the construction of the Foundation slab, or all of the underground part, or the entire building (the time is determined depending on the conditions of construction), the possibility remained injection waterproofing mixture into the cavity of the sleeve. Bag items when packing to ensure fixation of their position in the layout are fastened to each other.

If necessary waterproofing, vertical or inclined surfaces of the underground part of the building bag elements are placed and fixed on the inner side of the enclosing structure, such as the "wall in the ground". Before placing the bag element on a vertical surface of a wall of one end of the sleeve is sewn to prevent leakage of the waterproofing mixture when injecting or display on the opposite side of the underground structure.

After laying the bag elements is formed into a protective layer of concrete, thickness of 5-10 cm In the case of vertical construction, the execution of the protective layer is not necessarily or can be executed design in the form of a pressure wall. On the protective layer mounted arm the frame and carry out concreting of the base slab.

After the construction of the Foundation slab, or all structures of the zero cycle, work on inetsirovany hardening or sticky material through the editions of the bag elements for the formation of a waterproof layer. Injecting the solution into the cavity of the bag elements can be performed immediately after their pickup, or after a period of from several minutes to several months. Conducting injection it is possible to perform repeatedly as needed. As a waterproofing mixture used grease mixture, for example, bitumen mastic, or curing the mixture on the basis of cement, such as cast concrete mixture. Injecting is carried out by direct injection of the solution into the cavity of the sleeve, or by using the injector is placed in the cavity of the sleeve.

The technical result consists in the simplification of works by eliminating special requirements to the surface of the alignment layer, the possibility of inserting the waterproofing mixture at any time, regardless of subsequent production operations, the provision of local supply waterproofing mixture.

Sources of information

1. Awkard No. 2003121563, CL E02D 31/02, 2005.01.10.

2 Shilin A.A. and other Waterproofing underground and underground facilities during construction and repair, Tver, 2003, p.17-36, (prototype).

1. Method of waterproofing of underground parts of buildings and structures, including laying on the ground surface of the alignment layer, forming a waterproofing membrane, forming a protective concrete layer, installation of reinforcement cages and concreting of the Foundation and enclosing elements of the underground part of a building or structure, characterized in that the waterproofing membrane is performed by placing a continuous series long sleeve items from polymer fabrics with overlap each other and fastening them together or in several layers at an angle to each other, place the issues of the sleeve outside the Foundation, and after concreting of the Foundation and enclosing elements of the underground part of a building or structure through releases into the cavity of the bag elements injected waterproofing mixture for education waterproof layer.

2. The method according to claim 1, characterized in that the alignment layer is performed by gravel, sand or sand and gravel bedding.

3. The method according to claim 1, characterized in that the alignment layer is carried out in a concrete base.

4. The method according to claim 1, characterized in that the alignment layer is carried out in a concrete base covered with a layer of hydrophilic powder such as bentonite clay.

5. The method according to claim 1, characterized in that for the application to vertical or inclined surfaces enclosing elements of Pozen the second part of a building or structure long sleeve elements are placed and fixed on the inside of the casing enclosing elements and their subsequent concreting and after a set of concrete strength by injecting waterproofing mixture into the cavity of the bag elements.

6. The method according to claim 1, characterized in that as a waterproofing mixture into the bag element is injected hardening material such as concrete mix.

7. The method according to claim 1, characterized in that as a waterproofing mixture into the bag element is injected grease mixture, for example cold bitumen mastic.

8. The method according to claim 1, wherein injecting the waterproofing mixture produced during the construction and operation of a building or structure.

9. The method according to claim 1, wherein injecting the waterproofing mixture is done repeatedly.



 

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