Method for producing a fibre concrete slab for paving low-traffic roads, concrete slab, and method for paving low-traffic roads

Abstract

The invention relates to a method for paving low-traffic roads or paths with a paving slab that is cast in situ and has a width Dx narrower than the smaller value of D1 and D2, wherein D1 is the free distance between the front wheels of a standard haulage truck and D2 is the distance separating the wheels of the rear-wheel train, being the length of the paving slab Lx shorter than the value of the length L of the free distance between the front axle and the first rear axle of the wheel train of the standard haulage truck, such that the dimensions Dx and Lx mean that a single wheel or, alternatively, a single wheel train of the standard truck is always supported by the paving slab, touching same. The method comprises the steps of: providing for paving either a low-traffic road which has neither asphalt or concrete paving, or a low-traffic path; evening out and levelling the road or path to be paved; determining the width and length of the paving slab and establishing the thickness thereof in accordance with the amount of traffic and the traffic load, the bearing capacity of the natural ground, the strength of the concrete, the residual strength thereof and the climate, such that the thickness is between 5 and 15 cm; determining the amount of fiber required for a required design residual strength of between 10% and 50% of the maximum strength of the concrete; and preparing the mixture of concrete and fibers which are selected from steel, glass, polypropylene, carbon or another structural fiber for concrete. In addition, the method comprises pouring the mixture of fiber concrete directly onto the road or path to be paved according to

Description

FIELD OF THE INVENTION[0001]The invention relates to slab of concrete with fiber for paving roads of low traffic or similar, which presents a smaller thickness and predetermined width and length dimensions.[0002]The present invention further relates to the method of manufacturing fiber slab for paving roads of low traffic, and with the method for paving roads of low traffic.BACKGROUND OF THE INVENTION[0003]The unpaved roads are highly polluting, since the movement of vehicles on them, generates large amounts of dust; therefore, it is recommended that they be paved with gravel in order to make them more passable, since it is possible to eliminate the dust production. However, on gravel roads vehicles have less stability and adhesion, and to transit on unpaved roads is recommended that vehicles circulate at moderate speed and have their tires properly inflated, so that the stones do not break the tread.[0004]In addition to this, the cost of maintenance of these roads is very high, esp...

AI Technical Summary

Benefits of technology

The invention is a way to pave roads with low traffic using a slab of concrete. The concrete is optimized with fibers to make it stronger and more durable. The method for making the fiberized concrete slab is also described. The technical effects of this invention are stronger and more durable roads that can withstand heavy traffic, which can be achieved by using a slab of concrete that is optimized with fibers.

Problems solved by technology

However, on gravel roads vehicles have less stability and adhesion, and to transit on unpaved roads is recommended that vehicles circulate at moderate speed and have their tires properly inflated, so that the stones do not break the tread.

In addition to this, the cost of maintenance of these roads is very high, especially in those which circulate trucks, since the surface of boulders based on granular materials tends to decompact with the traffic of vehicles, eliminating the good quality material of the surface and producing calamine and pits on the surface.

Furthermore, there is the possibility of concrete paving the road but this solution although more durable, can be more expensive than the process of asphalting.

In addition to the above described, in both cases it is necessary to remove a portion of the existing road and to replace it with a good quality granular paving, to obtain both the structural capacity and the existing soil erosion; This not only increases the cost of the solutions, but it is also not-sustainable because it requires removing material out of the road.

Moreover, some of the slabs designs of the prior art have armor, mesh or ironworks in their structure in order to ensure the durability of the slab, but such an aggregate results in a considerable increase in the cost of slab design.

Therefore, the beam tests do not reflect the actual contribution of the fibers in the concrete in the pavement design.

Among the documents of the state of the art, there are documents describing concrete slabs with different types of fibers, but said slabs are not intended for use in pavements of low traffic roads.

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