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Method and system for constructing large continuous concrete slabs

A technology of concrete slabs and concrete, which is applied in the direction of building construction, processing of building materials, preparation of building components on site, etc.

Inactive Publication Date: 2007-03-28
BUILDING INNOVATIONS PTY LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

While the present invention aligns the cracks near walls and columns, it still requires additional time and labor in making the saw marks

Method used

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  • Method and system for constructing large continuous concrete slabs
  • Method and system for constructing large continuous concrete slabs
  • Method and system for constructing large continuous concrete slabs

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0064] The same reference numerals indicate the same parts in all the drawings.

[0065] Each figure shows a crack inducer system that induces cracks in the large continuous concrete slab 1. The system includes a number of crack-inducing elements 2 arranged relative to the concrete casting surface 3 and suitable for casting in the concrete. The size, shape, and spacing of the inducer 2 facilitate the generation of fine cracks near the inducer 2 in the area of ​​the entire slab when the concrete starts to harden.

[0066] Figures 1-5 show that the crack inducer 2 is elongated. Fig. 2 shows the inducer 2, for example, when viewed from a transverse cross-section, it may be circular 4, hexagonal 5, rectangular 6, or triangular 7. Fig. 2 also shows that a crack-inducing member 2 can be composed of several elongated parts 8 stacked or bundled together.

[0067] Figures 3-5 show a particularly preferred embodiment of the present invention, in which the crack inducing member 2 is composed...

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Abstract

A method and system is provided for constructing large continuous concrete slabs without using conventional shrinkage control joints. The system comprises a grid of closely spaced crack inducers (2) arranged relative to a concrete-pouring surface and adapted to be covered by concrete. The inducers (2) are connected to one another with connectors (10). The inducers (2) are of a size, shape and spacing to promote fine cracking in the vicinity of the inducers (2) throughout the slab when the concrete sets.

Description

Technical field [0001] The present invention relates to a method and system for constructing large continuous concrete slabs using closely spaced, cast-in crack inducers. Background technique [0002] Large concrete slabs such as the floors of commercial, retail and industrial buildings, and continuous sidewalks such as concrete roads and paths will crack during their hydration process due to concrete drying shrinkage and other effects, if they cannot fully adapt to the shrinkage strain. In the absence of shrinkage control joints, in the first three months after laying, cracks usually appear in the concrete slab and in the sidewalk, and these cracks will usually meander in the concrete at any location. [0003] Uncontrollable visible cracks in concrete slabs and sidewalks are usually perceived as unsightly by the person who sees them, and at worst perceived as invalid. In addition, uncontrollable cracks are weak areas that may break under load, while uncontrollable cracks will wi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E01C7/14E01C11/00E01C11/16E01C11/18E04B5/00E04C5/00E02D27/01E02D27/02E01C9/00E01C11/10E04B1/62E04B5/32E04C5/04E04G9/10E04G21/02
CPCE01C9/001E04C5/04E01C11/106E02D27/01E01C11/18
Inventor 沃里克·I·科尔法克斯罗伯特·F·科尔法克斯米罗·格塔尔迪克
Owner BUILDING INNOVATIONS PTY LTD