In today’s world “going green” has become a top priority in our society, and sustainable buildings and design are at the forefront of this green revolution. While many designers are focusing on passive and active energy systems, the reuse of recycled materials is beginning to stand out as an innovative, highly effective, and artistic expression of sustainable design. Reusing materials from existing on site and nearby site elements such as trees, structures, and paving is becoming a trend in the built environment, however more unorthodox materials such as soda cans and tires are being discovered as recyclable building materials. Materials and projects featured after the break.
Most common building materials today have recyclable alternatives. Concrete, metals, glass, brick and plastics can all be produced with some form of the previously used material, and this process of production lowers the energy requirement and emissions by up to ninety percent in most cases. Studio Gang Architects’ SOS Children’s Villages Lavezzorio Community Center utilized the ability to use left over concrete aggregate from construction sites in the surrounding Chicago area. The project features these different types of aggregate in an artistic expression of how and when the concrete was poured during construction.
Another popular trend regarding recycled building materials is the use of site provided materials. As environmental designers, we continually replace natural landscapes with our own built environment, and today our built environment is embellishing the natural environment in a responsible (while still aesthetic) manner. Projects such as the Ann Arbor District Library by inFORM Studio and the Jewish Reconstructionist Congregation Synagogue by Ross Barney Architects are reaping the harvest of their sites. The architects at inFORM researched the site for the Ann Arbor Library to find that ash trees from the surrounding forest were being destroyed by insects and could be salvaged into various surfaces within the building. Ross Barney Architects responded to the more urban site of the Jewish Reconstructionist Congregation Synagogue with a similar tactic by repurposing demolished trees into exterior sheathing, torn up paving and pre-existing structure into gabion walls, and even reusing part of the existing building foundation.
When a site has little to give, designers have begun to search within other demolished environments. Juan Luis Martínez Nahuel has found new uses for building elements from other architectural projects in his Recycled Materials Cottage in Chile. The design revolved around the available materials from demolished buildings including glazing from a previous patio as the main façade; eucalyptus and parquet floors as the primary surface covering; and steel and laminated beams from an exhibit as the main structure for the house.
While these methods of reused building materials have become popular in sustainable, contemporary architecture, other designers are experimenting with more unorthodox materials. Archi Union Architects Inc. have developed a wall system that contains a grid of empty soda cans in their mixed-use project,Can Cube. The can filled façade is even adjustable for daylighting by occupants.
Alonso de Garay Architects also discovered a new use for an uncommon object in the building system of their Recycled Building in Mexico City. A series of hanging car tires are constructed to possess and grow traditional species of Mexican plants. While creating a sustainable green wall system, the tires also define exterior space within the complex.