The Sustainable GRC Façade Panel Design using Recycled Polymers

Glass fiber reinforced concrete (GRC) is a sustainable material for facades, but adding polymer affects sustainability and combustibility. Waste paint can replace commercial polymers in GRC, managing waste effectively. Adding waste paint, up to 1% of cement weight, improves workability; further additions reduce it. Waste paint enhances GRC's hardened properties, significantly boosting flexural and compressive strengths. At smaller percentages, waste paint-modified GRC is non-combustible, meeting Australian standards for building envelopes. Rheological properties decrease with paint addition, making paint-modified GRC suitable for 3D printing. 3D printed waste paint-modified GRC exhibits increased strength in all directions tested.