Abstract

This study evaluates the performance of bio-based and conventional wall assemblies in relation to their ability to be disassembled and reused after exposure to environmental stress. While durability is often prioritized in construction, this research examines whether materials that resist change are also those most suitable for reuse. Four wall assembly types, two conventional (CMU with EPS insulation) and two bio-based (compressed earth blocks with hemp insulation), were constructed, each with two specimens to establish control and test conditions, using different connection strategies, including 1/2-inch mortared systems and a combination of thin mortar-slip joints with mechanical fasteners. Assemblies were subjected to a 12-day environmental cycling protocol consisting of repeated freeze–thaw and humidity cycles, followed by manual disassembly. Performance was evaluated based on disassembly time, material damage, physical changes, and recoverability. Results show that conventional assemblies maintained dimensional stability but relied on bonded interfaces that limited separation and reduced material recovery. Bio-based assemblies exhibited more visible material change, particularly in the compressed earth blocks; however, these changes did not compromise overall material integrity or prevent reuse. Hemp insulation demonstrated strong moisture resilience and remained intact throughout testing, while EPS experienced tearing and fracture. Connection strategy influenced disassembly behavior, though reduced bonding alone did not consistently improve material preservation. The findings indicate that recoverability is better supported by assemblies that accommodate controlled change and allow for defined separation, rather than those that resist it entirely. A hybrid approach combining earthen mortar, mechanical fastening, and compatible material systems emerges as the most effective strategy for balancing durability and reuse potential.

Publication Date

5-2026

Document Type

Thesis

Student Type

Graduate

Degree Name

Architecture (M.Arch.)

Department, Program, or Center

Architecture, Department of

College

Golisano Institute for Sustainability

Advisor

Seth Holmes

Campus

RIT – Main Campus

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