ES2582498B1 - Fresh stain cleaning procedure due to fluid spillage - Google Patents

Abstract

The present invention describes a method of cleaning fresh stains by spilling fluids, which comprises applying recycled aggregates of RCDs, with a content greater than 90% of mortar or concrete and particle size of less than 0.250 mm, stirring the mixture during a time between 5 seconds and 2 minutes, and collect the resulting aggregates embedded in the fluid stain. With this new application, it could be given a new commercial exit, prolonging its useful life through a simple, inexpensive and sustainable process, thus contributing to the reduction of its environmental impact.

Description

DESCRIPTION

CLEANING PROCESS OF FRESH SPOTS BY SPILL

FLUIDS

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FIELD OF THE INVENTION

The invention is part of the hygiene and cleaning sector as well! as in the health and safety. It has application in both the domestic and industrial fields, serving as a container and stain remover caused by spills of fluids 10 of different viscosity, such as water, oils, paraffins, etc.

STATE OF THE TECHNIQUE

The term Construction and Demolition Waste (RCD) is generally used when we refer to solid waste generated in the construction sector. Specifically, the term is defined as the waste arising from construction, renovation and demolition activities, including excavations and other earthworks, civil and building constructions, cleaning, demolition, road works and building restoration . They are usually composed of different materials such as bitumen, ceramic, concrete and mortar, natural aggregates, plaster and 20 impurities such as wood, glass, plastic, metal, etc.

As for the discharge of these RCDs to ecosystems, four strategies called Reduction, Reuse, Recycling and Discharge have been differentiated. The impact related to the use of each of them on the environment has an increasing order of less than mbs.

In the fields of cleanliness and safety and health, today, it is common to use other materials, such as natural sand, sawdust, ashes from different sources or talcum powder for cleaning stains and controlling accidental spills. All these materials 30 share a common characteristic, which is a high absorption combined with a granular arrangement that makes them easy to sweep or brush once they have absorbed the stain to be removed. However, obtaining these materials in turn implies a certain industrial process as well! as the exploitation of a natural resource. In addition, some of them, such as sawdust, are highly flammable, which makes them unfit for a large number of industrial uses.

DESCRIPTION OF THE INVENTION

The present invention is a method of cleaning fresh stains by fluid spillage, which comprises applying recycled aggregates of Construction and Demolition Residues (RCDs) with a content greater than 90% mortar or 5 concrete and particle size less than 0.250 mm, stir the mixture for a time between 5 seconds and 2 minutes, and collect the resulting drips embedded in the fluid stain.

In a preferable aspect, a minimum allowance of 3 grams of drip is applied per milliliter of fluid to be cleaned.

The accidental spillage of the fluid can be in both the domestic and industrial spheres. The cleaning procedure consists in applying a sufficient amount of drip on the stain and gently stirring for the necessary time, IS normally not exceeding 2 minutes. When the drip has absorbed all the fluid, it can be easily removed by brushing or sweeping.

According to the studies carried out in the laboratory, the recycled aggregate from RCDs shows a much greater absorption than a conventional natural drip, going from 20 less than 1% to more than 7%, largely thanks to the high mortar content and concrete According to some authors, other materials also present in the RCDs such as the ceramic ones from brick remains can reach up to 30% in their finest fractions (Poon CS, Chan D. “Feasible use of recycled concrete aggregates and crushed clay brick as unbound road sub-base. Construction and Building 25 Materials ", 2006. Vol, 20. Pag 578-585).

In order to optimize the product, different particle sizes were also studied from a cost-quality point of view. It was observed that the recycled aggregate is more absorbent the smaller the size of its particles although, at the same time, to achieve it, a more energy processing of the RCDs of origin is usually necessary. The experience carried out in the laboratory to determine an optimal degree of grinding consisted of mixing the standard spot of 10 ml of synthetic oil with 20 g of different grain sizes: a) 100% of particles smaller than 0.063mm; b) 50% of particles smaller than 0.063mm and 50% of 35 particles of size between 0.125mm and 0.250mm; c) 100% of particles of size between 0.125mm and 0.250mm.

In the first case, the surface is again clean and the aggregate is easily disposable by a gentle sweep while in the other two cases this was not possible. 20 g of particles of size 0.125 / 0.250 mm is not sufficient, with a minimum of 30 g being used as described above. Since it is less expensive to get 30 g of 0.125 / 0.250mm particles than 20g of particles smaller than 0.063 mm, it is advisable to use the larger particle size, provided that for some reason a lower one is no longer available. Therefore, the use of a recycled aggregate with a grain size of less than 0.250 mm is proposed.

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It has also been proven that the lower the degree of moisture present in the aggregate, the greater its absorption and therefore its cleaning efficiency is also greater. Therefore, it is advisable to use the recycled aggregate as dry as possible.

15 The product can be made available to the public in bulk or bagged, preferably hermetically and provided with an "easy-to-open" so that it retains the lowest possible moisture at the time it should be used.

The present invention provides a value added to a waste whose direct destination would be its deposition in landfills. With this new application, it could be given a new commercial exit, prolonging its useful life through a simple, inexpensive and sustainable process, thus contributing to the reduction of its environmental impact.

25 EXAMPLES

With the intention of showing the present invention in an illustrative way but in no way limiting, the following examples are provided.

Example 1: Elimination of a bitumen emulsion stain for asphalt.

On a 10 ml bitumen emulsion stain on a concrete floor, 3 g of recycled aggregate from RCD was applied for each ml of liquid to be cleaned. The cleaning aggregate had a grain size of less than 0.250 mm and was applied dry (moisture index <0.5%) directly on the stain. The mixture was removed for 1 minute until complete absorption of the liquid material was reached and removed by means of a simple sweep, brushing or vacuuming. The result was the total removal of the stain, leaving the surface ready to be cleaned by conventional methods.

Example 2: Removal of a spot of synthetic oil from engines.

30 g of recycled aggregate from RCD was applied to a spot of synthetic motor oil on a 10 ml soil, and the mixture was gently removed for 1 minute. The result was the removal of the stain.

On an identical stain, 55 g of natural fluid had to be applied by stirring the mixture 1 minute in order to eliminate it and achieve similar results. It is thus demonstrated that the recycled aggregate of the invention offers better results than natural aggregate.

Claims (1)

ES 2 582 498 A1 1. Procedure for cleaning fresh stains by fluid spillage, characterized in that it comprises: - apply recycled aggregates from Construction and Demolition Waste, RCDs, 5 with a content greater than 90% mortar or concrete and particle size less than 0.250mm, - stir the mixture for a time between 5 seconds and 2 minutes, and - collect the resulting aggregates embedded in the fluid stain. 10 2. Procedure according to revindication 1, characterized in that said application is It performs with a minimum dotation of 3 grams of aggregate per milliliter of fluid to be cleaned. fifteen