Argo Graphene Solutions has reported encouraging initial performance results from its graphene oxide (GO) cement additive program, using graphene produced through the proprietary STREAM™ graphene production platform licensed exclusively from Grapherry.
In its initial testing, Argo found that adding only 0.05 wt.% graphene oxide - roughly five parts GO per 10,000 parts cement by weight - increased ultimate compressive strength by approximately 60% compared to control samples. Testing used ASTM-standard 2-inch by 2-inch cement specimens cured for seven days prior to compression testing, and the Company reports that the results were reproduced consistently across multiple independent test batches.
The graphene oxide used in the testing was manufactured using Grapherry's proprietary STREAM-G™ and STREAM-O™ production processes, tying the performance results directly to the technology platform that underpins Argo's long-term commercialization strategy under its previously announced exclusive worldwide license agreement.
The Company noted that while seven-day compressive strength testing provides valuable early performance data, 28-day compressive strength testing is the industry benchmark for structural concrete applications. Argo intends to continue its testing program and believes future 28-day results will provide additional validation as commercialization efforts continue.
In related news, Argo is conducting an exempt offering of common shares and warrants in the United States, with the first sale occurring on June 24, 2026. The Company has sold $1,039,700 USD, representing 2,500,000 common shares issued at a deemed price of C$0.592 per share. A further $2,897,812 USD remains to be sold, corresponding to the aggregate post-exercise amount of all 5,500,000 warrants to be sold in the United States at an exercise price of C$0.75 per share.
