Julio Diarte

Tapping into Urban Recycling for Low-Cost Building Materials: Exploring a Craft/Digital-Based Workflow for a Building System with Waste Cardboard and Wood.

Waste corrugated cardboard is one of the most significant components of urban solid waste worldwide. It is also among the least valued recyclable goods found in any given urban waste stream today, and it is highly underutilized in developing countries. Although recycling rates of waste cardboard reached decade-high levels in recent years—including in the United States—both the price per ton and the amount of waste cardboard exported for recycling dropped substantially, resulting in more of this material being sent to landfills. Some of the essential benefits of cardboard as a building material demonstrated by previous research include recyclability, relative strength to support certain structural loads, lightweight, and beneficial acoustic and thermal insulation characteristics. The work presented in this dissertation aims to take advantage of the low-cost, availability, and material properties inherent in cardboard to devise a workflow to produce affordable building components and support low-cost/low-skilled housing construction. The research combines low-tech and low-skilled methods with high-tech and computational design methods and tools to design and prototype building components for housing construction produced with sheets of waste cardboard and wooden elements. The research contributions include increasing buildings’ sustainability by reusing waste cardboard instead of landfilling it and helping waste collectors’ communities in developing countries to add value to the material they collect.

Project Link
http://personal.psu.edu/jcd40

Advisers/Committee

Julio Diarte
Proposed Workflow: The workflow includes each action needed to repurpose waste cardboard sheets collected from the urban waste as building parts for housing construction.
julio diarte
Wall, floor, and ceiling panels consist of plywood frame, waste cardboard panels, and facing (plywood, cement boards, or drywall boards). Plywood frame can be fabricated either using digital fabrication tools or conventional carpentry tools depending on available resources. Waste cardboard panels are produced by waste collectors following instructions obtained from the design process.
julio diarte
The project included the organization of co-building workshops with waste collectors in Paraguay to test the building system. The research team including five members of the local waste collector’s community worked for a week at the Architecture School at the National University of Asuncion in August 2019. The figure shows different stages of the building parts fabrication process.