Concrete pavement slabs for streets, roads or highways and the methodology for the slab design
A concrete slab where the maximum width value of the slab Dx is determined by the lower measure between the distance D 1 of the front wheels of a model loading truck or by the mean, and the distance D 2 of a rear running gear of the same truck or the mean; the maximum slab length L is determined by the distance between the truck axles or the mean; and the thickness E is determined by the concrete resistance value, in view of anticipated traffic loads, the kind and quality of the base, and the ground type. The design methodology of this concrete slab allows for only one wheel or only one running gear of the truck to touch and move over the slab.
1. A method for producing concrete slabs pavements for streets, roads, highways and express highways wherein a base is prepared and concrete is poured on site to form the slab, the method comprising the following stages: a) providing a model truck with a distance D 1 between front wheels, a distance D 2 between a set of rear wheels, and a length L between the front and the first rear axle of the set of wheels; b) setting the width of the slab so that the width is smaller than the smallest of D 1 and D 2 ; c) setting the length of the slab so that it is smaller than the length L; d) setting the thickness of the slab to a value E based on a value of strength of the concrete; e) preparing the base, and f) pouring concrete in situ to form at least one parallelepiped slab having a width and length of the slab, or to form a parallelepiped section and subsequently cutting the section to form a plurality of slabs, each slab having a width not larger than the smallest of D 1 and D 2 and a length not larger than L; wherein at all times only one wheel or one set of wheels will touch and be supported by the slab.
2. A method according to claim 1 , wherein the width of the slab is greater than 0.50 meters.
3. A method according to claim 1 , wherein the length of the slab is greater than 0.50 meters.
4. A method according to claim 1 , wherein the width of the slab is equivalent to half the lane width.
5. A method according to claim 1 , wherein the length of the slab is not larger than 3.0 meters.
6. A method according to claim 1 , comprising first forming a concrete section having a width larger than the smallest of D 1 and D 2 and a length larger than L and then cutting the concrete section to produce a slab having a width not larger than the smallest of D 1 and D 2 and a length not larger than L.
7. A method according to claim 1 , comprising pouring the concrete section directly on site to form a rectangular parallelepiped.
8. A method for generating a design catalogue comprising preparing the concrete slabs as in claim 1 , and cataloguing performance data measured in test sections of the concrete slabs base on the dimensions D 1 , D 2 , L and E.