Construction World August 2022

building as well as its operational CO₂ footprint. Hemporium’s long-term goal is to continue to promote legislative change so that cultivation of industrial hemp in South Africa becomes a mainstream reality. The hemp industry could provide solutions to many of the challenges that South Africa faces by way of sustainable housing, nutrition and job creation. Afrimat Hemp also expands its upstream hemp processing capabilities through its built technology. This will help enable the hemp value chain to be unlocked cost-effectively in South Africa for all. Afrimat Hemp is also committed to creating jobs in South Africa and contributing to a sustainable, carbon-neutral, future. 

considered the gold standard for CO₂ reduction in buildings. The South African government has initiated a drive to create employment within the industrial hemp sector, therefore the timing to develop hempcrete-based construction materials is ideal. Previously, hemp houses built in South Africa used hempcrete. For a project of 84 Harrington’s scale, this was not feasible, and inspiration was taken from hemp blocks developed in Europe. The creation of hemp blocks is a viable way to commercialise hemp in the construction industry. “With this in mind, Hemporium naturally looked for strategic partners on this project, which we found in Wolf and Wolf Architects and Afrimat Hemp,” Tony Budden, Founding Partner and Director, Hemporium. Wolf & Wolf Architects is a small practice specialising in contemporary and sustainable architecture and are considered pioneers of hemp construction in South Africa. They are passionate about pushing the envelope of hemp construction and have set a precedent that will aid in stimulating the new hemp industry in South Africa. “Afrimat, a mid-tier mining company, prides itself on having an innovative and entrepreneurial culture, always looking at global trends. A subsidiary, Afrimat Hemp, focuses on carbon-neutral construction and unlocking value in the industrial hemp sector. Afrimat Hemp has developed its own formulated lime binder for hempcrete and is producing hempcrete blocks at one of its commercial block plants,” Boshoff Muller, Managing Director, Afrimat Hemp. Afrimat Hemp is leading the way in South Africa and Africa for a new era of carbon-neutral building materials and investing in a sustainable future in construction, and proudly supplied the hempcrete blocks and building systems for 84 Harrington Street. The benefits of using hemp in a multi-story building: • Hemp is 100% natural, CO₂ absorbing, energy saving, and durable, • The superior acoustic performance ensures privacy between units. • Vapour-permeability: The ability of hempcrete to easily absorb and release moisture assists with regulating the buildings’ internal humidity, thus maintaining a healthy indoor air quality. • The lower density of the hemp blocks reduces the load of the walls on the foundations & therefore the cost of concrete. • Using hemp blocks reduces the CO₂ footprint of a

17 CONSTRUCTION WORLD AUGUST 2022