DE10013623A1 - Cavity wall protection against seapage water places sealing tape beforehand at floor wall join in vertical butt join offset to outer shell height. - Google Patents

Abstract

A horizontal joint tape (7) is arranged beforehand in the wall-to-floor join of the vertical cover (2) offset in height to the outside of the building. The vertical joins between the prefabricated components are closed off on the outer shell (3) and the horizontal join between prefabricates and floor plate (8) is sealed using a system of joints reaching into the concrete core of the cavity walls. The cover (2) of the horizontal join stands outside the horizontal join closure only to terminate just short of the closure top edge.

Description

Introduction: state of the art

The outer walls of a basement must always be protected from earth moisture or water become. A special construction for basement walls is the construction with prefabricated parts, which are usually referred to as a cavity wall or three-layer wall. With this design, the Sealing of the building by measures on the outer wall, or by the water permeable design of the core concrete can be achieved.

The load on the seal is defined by different load cases. So differentiate seals against non-pressing water against seals against pressing water provided that the cellar is completely immersed in water when sealed against pressing water can be without showing moisture on the inside, the seal against non-pressing water only water flowing down from the top of the building Keep the inside of the building away.

In the meantime, several methods have proven their worth for sealing against pressurized water have, such basements are almost sealed against non-pressing water today exclusively by applying sealing coatings on the outside of the basement wall.

problem

The sealing of the walls from the outside cannot be done in one go with the backfilling Cavity walls are made. A renewed use on the construction site is required in addition to the Weather conditions must allow the processing of the sealant. So z. Legs Processing sealants in frost or rain is only possible with special precautions.

solution

Non-pressing water e.g. B. splash water, is derived on the outer shell of the basement wall and in the vertical butt joints to the lower edge of the shell. This is preferably done, for example
by attaching a cover to the joint on the inside of the outer shell
Advantage: Can be pre-assembled in the plate, protected from mechanical damage.
by placing a groove in the joint between the outer shells
Advantage: Already when the finished parts are put in place, the joint is finished optically as well as functionally.
by attaching a cover to the joint on the outside of the outer shell
Advantage: Already when placing the finished parts, the joint is finished optically as well as functionally. The shape and material of the joint can be designed optically freely.
by filling the joints on the outside of the outer shell.
Advantage: No molded parts required. The look of the joint can be freely designed by the choice of material.
due to a special shape of the outer shells in the joint area, e.g. B. as tongue and groove or by counter-chamfering the outer shells in the joint area or by z. B. L offset of the outer shells in the joint area.
Advantage: No additional measures to cover the joint are required.

If covers of the joint are required, they can preferably be attached as follows:
by pouring molded parts on the inside or outside of the outer shell.
Advantage: No additional work on the construction site.
By mechanically retrofitting a cover of the joint on the inside or outside of the outer shell z. B. by nailing, doweling, shooting, clamping or inserting into appropriate recesses.
Advantage: All necessary measures can be carried out freely on the construction site.
Glue with z. B. epoxy resin, silicones, bitumen, mineral glue
Advantage: No mechanical damage to the plate is necessary.

In principle, all materials can be used to cover the joints, preferably:
Sheet metal, wood, plastic. Fiber cement,
Fillers from z. B. cement, bitumen, silicone, polyurethane, rubber, etc.

The sealing of the horizontal joint between the base plate and core concrete of the prefabricated part is preferably z. B. designed as follows:
By a joint system z. B .:
PENTAFLEX, joint sheets, PVC joint tapes, rubber joint tapes, injection hoses, swelling tapes, concrete upstands.

In the case of cavity walls, the penetration of is due to the impermeability of the concrete shells Water into the building is only possible via the all-round joints of the individual prefabricated parts. The vertical joints between the finished parts are preferably covered with a cover Outer shell covered in the manner described above or by special shape of the Outer shell in the joint area, that water flowing out of the building on the cover or the joint edge is led down over the floor slab.

The horizontal joints between the prefabricated parts and the floor slab are preferably used a joint tape of the type described above, the z. B. 10 cm in the core concrete of the cavity walls protrudes so sealed that no water between the base plate and the core concrete of the cavity walls can penetrate more.

The water drained from the vertical cover is preferably in the wall / sole connection automatically led into the ground via the base plate, since the vertical cover in front of the horizontal joint tape is arranged to the outside of the building, and up to below the top edge of the horizontal joint system is performed.

With the method it makes no difference whether the vertical covering of the joint is already in the Precast plant or only when the elements are installed on the construction site.

This sealing system described here can be used in the same way for prefabricated walls Use solid concrete if there is a recess in the bottom of the precast elements for horizontal Joint system is provided.

Explanation of symbols

1

Gap

2

cover

3rd

Outer shell

4

Inner shell

5

First finished part

6

Second finished part

7

Joint tape

8th

Base plate

9

probation

Fig. 1 shows the front view of the basement wall / floor slab

Fig. 2 shows the section AA through the basement wall / floor slab in an exemplary arrangement of the cover to the joint tape.

Fig. 3 shows the section BB through a finished part with an exemplary arrangement of cover / joint plate.

Fig. 4 shows various exemplary arrangements of the cover.

Fig. 5 shows exemplary embodiments of the finished parts without covers.

Claims (4)

1. A method for sealing hollow walls against non-pressing water, characterized in that a horizontal joint tape ( 7 ) in the wall / sole connection of the vertical cover ( 2 ) in front of the building is offset in height in the vertical butt joint. 2. A method for sealing hollow walls according to claim 1, characterized in that the vertical joints between the prefabricated parts on the outer shell ( 3 ) are covered. 3. A method for sealing hollow walls according to claim 1 or 2, characterized in that the horizontal joints between the prefabricated parts and the base plate ( 8 ) are sealed with a joint system which protrudes into the core concrete of the hollow walls. 4. A method for sealing hollow walls according to claim 1 or 2 or 3, characterized in that the covers ( 2 ) of the vertical joints are arranged outside the horizontal joint seal, and only ends below the upper edge thereof.