2019 CSCE Annual Conference - Laval (Greater Montreal)

2019 CSCE Annual Conference - Laval (Greater Montreal) Conference

Compressive Strength of Hemp-Substituted Concrete

Ms. Michelle Liu, CPATT - University of Waterloo (Presenter)
Mr. Colin Van Niejenhuis, University of Waterloo
Mr. Roberto Aurilio, CPATT - University of Waterloo
Dr. Hassan Baaj, University of Waterloo

Hemp is an organic material particularly well known for its industrial applications. It is a species of the cannabis family and has historically been stigmatized due to its resemblance and genetic proximity to marijuana. With the recent legalization of marijuana in Canada, the interest in hemp may become widespread in the building industry upon overcoming its supply barrier. Hemp possesses various beneficial properties as a building material, including its renewable nature and ability to sequester carbon throughout its cultivation and service life. This paper aims to explore the use of hemp as a partial substitution for aggregates in regular concrete mixes for non-structural uses, with the resulting compressive strength being of primary interest. Concrete cylinders with 10%, 15% and 20% hemp shivs by volume were created and subjected to standard laboratory compressive strength test after 28 days. Compressive strength and dead load are expected to be inversely related to hemp content, and insulation properties are expected to be directly proportional to hemp content.