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Resolute is making concrete progress with cellulose filaments, a novel biomaterial

We have moved forward with production and testing of our cellulose filaments in concrete, and the preliminary findings are extremely promising. 

Resolute announced the construction of a commercial plant specializing in the production of cellulose filaments at our Kénogami (Québec) paper mill in 2020. Also known as nanofibrilated cellulose (NFC), cellulose filaments are a novel, 100% natural biomaterial additive made from wood. This material can be used to enhance the technical and environmental performance of a variety of products, such as concrete and plastics.

Resolute’s first concrete steps in the development of this new and exciting material took place in 2014, when Resolute and Mercer International launched Performance Biofilaments Inc., a joint venture focused on commercialization of nanofibrillated cellulose in new and novel applications where it can deliver significant value in applications such as concrete, plastics, rubbers and industrial fluids.  

Leading the way

Resolute thinks that entering nontraditional markets implies not only innovating in research and commercialization, but also displaying an appetite for taking measured risks to accelerate the deployment of novel, environmentally friendly solutions.

True to its dedication to successfully taking this product to market, Resolute and its partner Performance Biofilaments commissioned the first commercial trial of a cellulose-filaments enhanced industrial concrete slab as part of Resolute’s Senneterre sawmill expansion. With the help of concrete supplier Béton Barette, general contractor Hardy construction and durability engineering consultant SIMCO Technologies, twin slabs of concrete were poured on the Senneterre site in late 2022. The one contained cellulose filaments and the other used a traditional concrete mix. 

Our objectives were to demonstrate the effectiveness of cellulose filaments developed by Performance Biofilaments as an antishrinkage agent, as well as to validate the mixing and pouring sequence on a jobsite. 


Concrete promise

We came away with important findings that showed the tremendous potential of cellulose filaments. We confirmed that our product helps control the evaporation of water, which reduces cracking during the initial curing of fresh concrete. Over time, we will also validate the effect of filaments on the durability of the concrete slab. For example, in Quebec’s climate, low-porosity concrete slows the diffusion of chlorides from the use of de-icing salts. The result is a reduction in the probability that reinforcement bars will corrode and an increase in the overall durability of concrete. The benefits of cellulose filaments can add up, from the environmental standpoint and in terms of infrastructure management, especially large structures. 

The value of partnerships

Our innovative approach to resource transformation involves working with industry partners to turn existing base materials, such as kraft pulp, toward beneficial uses. 

The extraction technology used to produce cellulose filaments was developed by FPInnovations, a private, not-for-profit organization that creates solutions to support the Canadian forest sector’s global competitiveness and counts Resolute as a member. 

Moving forward

“When we look at the horizon of what is possible, our experience at the Senneterre sawmill shows we’re on the right track,” said Alain Bourdages, Resolute’s vice president, Innovation and Energy. “Our initial testing shows that we are indeed advancing the value-added transformation of wood fiber into a 100% natural specialty additive for products such as concrete and markets such as construction. What we have here is a performance-enhancing biobased material. This is a truly exciting initiative.”

We are looking forward to carrying out more projects with various partners and expanding the scale of the testing. We encourage industry stakeholders to reach out to Performance Biofilaments or Resolute about their specific interests. Together, we can explore how cellulose filaments can enhance their products and benefit their businesses.

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