Within the framework of the Paris Climate Conference in December 2015, 195 countries adopted the first legally binding global climate agreement. This agreement has been new news by announcing Donald Trump, the withdrawal of the United States, the second largest emitter of the world’s polluting gases, from the pact. The Paris Agreement establishes a global plan of action to prevent climate change by limiting global warming to well below 2 ° C and points out that gases emitted by human activity should be equivalent to those that the oceans, trees and soil can absorb from natural form. Among the main greenhouse gases the most concerned is carbon dioxide because of its responsibility in climate change. So that the world can achieve these proposed climate goals, all possible ways to reduce carbon emissions must be deployed. Construction is one of the largest consumers of raw materials. The cement sector is responsible for about 5% of CO2 emissions, the main greenhouse gas and climate change. Concrete is the most commonly used construction material in the world: every year the concrete industry employs 1.6 billion tons of cement. Each ton of cement in its manufacture, emits 1 ton of CO2 into the atmosphere. In addition, during the construction process it is normal to use heavy machinery that generates the greatest amount of carbon dioxide emissions. The transport of materials to the site constitutes 6-8% of total greenhouse gas emissions for a project.
The commercial and residential construction sector accounts for 39% of carbon dioxide (CO2) emitted into the atmosphere while generating 30% of solid waste and 20% of water pollution. So we could conclude that half of the CO2 expelled to the atmosphere is related to the construction of buildings throughout all phases: construction, use and subsequent demolition. As a result, the construction sector has an important role to play in reducing the threat of climate change.
To reduce this environmental impact of the construction sector, it is essential the use of materials that do not require the use of fossil fuel and cause high carbon emissions such as wood.
Wood offers many environmental benefits. It is a sustainable material whose production does not harm the environment. It also has exceptional insulation properties (both thermal and acoustic), protection against fire, flexibility and strength (14x steel load capacity), adapts to any climate and environmental condition. Its production contributes a negative balance in CO2 emissions and in its transformation requires much less primary energy than in the case of steel and concrete. Finally, the construction in wood allows us the industrialization of the construction process with all that this entails in the fulfillment of execution periods and budget, and quality of the final product.