Macroalgae Bricks

This project explores the application of macroalgae in building materials. Inspired by the increasing popularity of new material explorations within microalgae such as biofabrics, bioplastics, and even algae-cement, this project considers the less technically demanding, more easily-extractable macroalgae. In Hong Kong, macroalgae are not only used commercially but are also promoted locally as a key component of biodiversity conservation projects. Macroalgae can often be found washed up along shores.

Dried macroalgae has a similar texture and appearance as that of paper. Therefore, this material exploration takes inspiration from the patented papercrete, wherein a blended macroalgae sludge replaces the paper pulp portion of the listed ingredients for papercrete. The macroalgae sludge is mixed with grey/white cement and/or with sand at various ratios, with the aim to maximize the ratio of added macroalgae without compromising the structural integrity of the resultant brick.