SU1235735A2 - Method of sealing cavities in end faces of concrete articles - Google Patents

Description

The invention relates to the construction and can be used in the construction of housing and public facilities, and is an improvement of the known method by the author. St. No. 404632.

The purpose of the invention is to reduce the material intensity when using the method of sealing voids in the overlap panels by increasing the strength and decreasing the stress concentration in the corner zones of the panels.

FIG. 1 shows a panel overlapping, top view; in fig. 2 shows section A-A in FIG. one; in fig. 3 shows a section BB in FIG. one; in fig. 4 is a layout diagram of the arrangement of the panels in a frame-panel building with tensioning the reinforcement in construction conditions.

The slab is, for example, made of reinforced concrete and it is a slab of constant thickness in which longitudinal cavities 1 are arranged and cuts in the corner zones 2 for mating with the columns of the framework. The contour zone 3 of the panel at the side face 4, through which the void-forming agents are extracted, is made solid for receiving the creep forces without holes being loosened. At the opposite face, the Pre-zone is slightly weakened by channels 5 of small diameter, arising from the stops of the holders, and does not need to be reinforced. Extreme longitudinal cavities 6, adjacent to the angular zones having a depth of not more than d, are shortened to not less than 2d, where d is the greatest width of the channel. This reduces the concentration of stresses from the forces of reduction in places withOOOQQOQQOQ j

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the strands sang with columns. There are local depressions 7 on all lateral edges, creating keyed joints when embedding the gaps between adjacent floor panels and ensuring that the panels work together with embedding concrete.

All the described design solutions allow to expand the field of application of hollow-core floor panels and

in particular, to use them in frame-panel buildings with tensioning the reinforcement in construction conditions according to the scheme (Fig. 4).

In these buildings, the overlap panel is installed on temporary assembly tables, secured to columns 8. The seams 9 between the columns and the overlap are sealed with a shifting solution. In the gaps between adjacent slabs and h, through the holes in the columns, high-strength reinforcement 10 is passed through which is subsequently applied to the concrete, after which the gaps between the slabs are monolithic. The molding of the overlap panel is carried out in the following manner.

After installation in the reinforcement form

grids and frames and the installation of hollow ponds are laid and the concrete mix vibrates. After this, the formers are removed. Within the marginal zone of the panel, at the side face, through which the void formers are removed, the concrete pads are collapsed with voids and additional concreting and vibrating of the corresponding sections were performed, which later underwent steaming or other heat treatment.

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Claims (1)

METHOD FOR SEALING EMPTAGES IN THE ENDS OF CONCRETE PRODUCTS by ed. St. No. 404632, characterized in that, in order to reduce material consumption when using the method of sealing voids in overlapping panels by increasing strength and reducing stress concentration in the corner zones of panels, extreme voids are made shortened at each face of the panel by at least 2d, where d - channel width. SU „„ 1235735> N)