https://digitalcommons.calpoly.edu/arce_rpt/6
Date of Award
6-2023
Degree Name
MS in Architecture - Architectural Engineering
Department
Architectural Engineering
College
College of Architecture and Environmental Design
Advisor
Craig Baltimore, PhD, SE
Advisor Department
Architectural Engineering
Advisor College
College of Architecture and Environmental Design
Abstract
To achieve greater sustainability in masonry construction for the Western market it is common to replace masonry grout's partial cement content with waste pozzolans. As waste pozzolans are in limited supply, as the coal burning market in the West diminishes, this research investigates viable grout mixtures which replace cement with Natural Pozzolans, a more plentiful sustainable replacement. The present work investigated the percentage of Natural Pozzolans that can be partially substituted for cement for grout mixtures to achieve an axial compressive strength of 2000psi within 28 and 56 days of curing. To determine efficacy per ASTM 476-22, “Standards Specifications for Grout for Masonry,” prisms of grout mixtures were tested which partially replaced the cement content within grout at increments of 20%, 30%, 40%, and 50%. Natural Pozzolans (metakaolin) which were created, and compression tested. From axial compressive testing, it was determined that current mixtures, with limited lime content which replace 20-30% cement content for Natural Pozzolans, met the 2000psi strength demanded for grout used in construction. Therefore, replacement of cement content with Natural Pozzolans could be used as a more plentiful sustainable replacement for cement content within grout.