SAVASCO is an INTERREG project (Spain - France - Andorra) POCTEFA 2014-2020,
which aims to structure an innovative and sustainable construction sector based
on corn and sunflower stalks. Established on the transpyrenean territory,
it should contribute to reduce the environmental impacts of the building sector.
Today, insulation building materials are mainly derived from non-renewable raw
materials of mineral or petroleum origin, whose extraction and processing have
major environmental impacts, particularly in terms of greenhouse gas emissions
and energy consumption.
However, the physical characteristics of certain agricultural waste, such as corn
and sunflower stalks, give them the thermal insulation and hygroscopic regulation
performance sought after in the formulation of construction materials. In addition,
these bio-sourced raw materials have many environmental advantages: they are renewable,
local and act as carbon sinks.
Spanish Universities are collaborating in the characterization and development of plant aggregates
for the construction sector, the main objectives are to develop materials with good thermal and physic
properties without compromising the durability of the materials. This require a further hygroscopic,
acoustic and fire resistance analysis of the aggregate optimal samples (those with the best properties
without compromising the cost and the environmental impact).
To evaluate the cost and environmental impact of the plant aggregates, a life cycle methodology is
considered (life cycle cost and life cycle assessment respectively), considering all steps from the
extraction of the materials until the disposal (cradle to grave). On the other hand, for the early stage
of the analysis, a cradle to gate analysis might be considered, including all the steps until the
of the plant aggregates.