Growing Environmental Concern In The Industry Generates The Need To Manage Demolition Waste.

Growing Environmental Concern In The Industry Generates The Need To Manage Demolition Waste.

The demolition excavator of Liebherr 960 won awards and recognition for its capacity and control system.

While the environmental issue takes its place in the construction industry, increasingly the question of construction and demolition waste (known by the acronym RCD) becomes essential.

A vast variety of companies has been adapting their businesses, or even entering the market, to take advantage of the opportunities that appear and at the same time collaborate with the collective effort of the industry to reformulate their practices a nd impact the environment less.

This is how the sectors of demolition and recycling of construction waste were never as close together as they are now. This is reflected in the emergence of companies, business fairs, and associations that deal with the issue of RCD in their countries. As usual, in Latin America, we are not very advanced in the topic, but some elements can make us proud.

Everything, in as much, depends on the legislation produced to regulate and to determine obligations of recycling. In general, when these legislations exist, an active market for products derived from the DRC is created.

The mayor of Bogotá, for example, published its regulation establishing obligations for DRC treatment in 2012. It was found that as of 2013 the waste generated in the Colombian capital should allocate at least 5% of its weight to recycling.  Besides, determined that each year this requirement should grow by 5% to reach at least 25%, which should be achieved this year in the city.

In Brazil, the National Environment Council decided in 2002 to oblige all the municipalities of the country to develop their plans for recycling and use of construction waste. Since then, many (but not all) cities have seen their RDC recycling markets.

For its part, in Brazil, an association with 32 companies gathers the most outstanding part of this market.  Absecon  (Brazilian Association for the Recycling of Waste from Civil Construction and Demolition)

carries out studies and promotes good ecological practices in the construction industry. Finally, it should not be ignored that this year for the first time the Sobratema Summit, which will bring

together the leading equipment and solution fairs of Latin America in São Paulo, will have its environmental interface with the BW Expo, simultaneously with Construction Expo and M & T Piezas y Services.

Products And Services Of The Variety Of Manufacturers That Are Dedicated To The Demolition And Recycling:

  • For all the above, it is more than natural that there is a more qualified provision of products and services of the variety of manufacturers that are dedicated to the demolition and recycling sector.
  • One of the most innovative providers in the sector is Brokk, a company of Swedish origin that specialized in the concept of demolition robots. Remote control on tracks characterizes Their equipment, and by having very compact dimensions, Brokk robots get into small spaces of buildings in demolition. All this has led to consider the Brokk portfolio for non-explosive demolitions in different markets.
  • The growth was exponential, and today the company is a benchmark in the market. At the last Conexpo, held in March, the Swede showed the market its new product, the Brokk 500 robot.
  • The Brokk 500 has 40% more braking power than its predecessor in every hammer blow. Its three-section articulated arm, characteristic of the brand’s engineering projects, is now more massive, reaching 7.4 meters in the vertical and 7 meters in the horizontal.
  • Hoever, the new version of the robot maintains the width of its predecessor, and with an operating weight of 5.2 tons is marginally more burdensome than the   Brokk 400. All accessories and parts of the new model are compatible with previous models.
  • The new Brokk demolition robot model is designed to work with a hydraulic hammer from another Swedish manufacturer that has traditional participation in the demolition market: Atlas Copco.
  • The ideal hammer for the Brokk 500 is the Atlas Copco SB702, which has 700 kilograms and in the demolishing robot can deliver blows of 1,500 joules.
  • The SB702 is part of Atlas Copco’s Premium line of breaker hammers. Some of its most outstanding characteristics are water injectors that help to suppress the dust generated by the cracking of structures. Another interesting point is its ContiLube system (optional), which is a lubricating pump mounted directly on the hammer that lubricates it continuously while it works.
  • In the case of demolition accessories, another prominent manufacturer that even has a significant share in Latin American markets is the Spanish company,    Xcentric Ripper. In a recent event held in his country, the Smopyc equipment fair, the company showed a new series of breakers. The models in question are the XR82, XR42, and XR52.
  • This new line is designed for heavy work; it is enough to see that the XR42, the most compact of the series, is coupled to excavators of between 32 and 40 tons, while the XR82 (line  topo) is coupled in excavators of between 70 and 90 tons. If the operating weight of 10 tonnes of the XR82 is taken into account, its frequency of 750 strokes per minute is visible.

Construction And Demolition Wastes

Given the need to have a primary regulation, specific for construction and demolition waste (hereinafter RCD), which established the minimum requirements for its production and management, and to promote its prevention, reuse, recycling, recovery and proper treatment Of those destined for elimination, Royal Decree 105/2008, of 1   February , was enacted in 2008  , regulating the production and management of construction and demolition waste.

The norm applies the principle of producer responsibility, waste prevention, and co-responsibility among all the agents involved in the RCD production and management chain (promoters, designers, facultative management, builders, managers, etc.).

They are called RCD any substance or object that, fulfilling the definition of waste, are generated in a construction or demolition work. Understanding as construction and demolition activities consisting of the construction, rehabilitation, repair, reform or demolition of real estate, such as a building, highway, port, airport, railway, canal, dam, sports or leisure facility, and any other analogous civil engineering; It also includes the waste generated in minor works, defined as those of construction or demolition of little constructive and economic entity, that does not suppose alteration of the volume, of the use, of the facilities of everyday application or the number of houses and premises, and that does not precise project signed by qualified professionals.

The construction and demolition waste object of the analysis of this section is classified in chapter 17 “Waste from construction and demolition” of the European Waste List, approved by Order MAM / 304/2002.

Based on their origin, the RCD can be classified as:

– Domestic RCD: those that fall within the definition of household waste according to Law 22/2011, of July 29, on waste and contaminated soils, and that therefore come from minor construction and repair works. In this case, its competence is municipal.

– Industrial RCDs, which come from construction or demolition works outside the domestic sphere. The responsibility of the management is of the producer by the specific regulations existing for this purpose.

Among the obligations that the regulation establishes, it stands out that the producer must include in the work project a management study of the construction and demolition waste, where it is detailed how the waste that will be generated in work will be managed, and the obligation on the part of the possessor to present to the producer a management plan for this waste, in which the way in which the requirements set out in the management study will be carried out is specified.

Also, since the highest danger lies in the detachment of fibers or particulate material, it is recommended that the storage of asbestos waste, up to its delivery to the manager, be carried out in double waterproof and resistant bags, or in closed drums.