3D printing concrete containing thermal responsive gelatin: Towards cold environment applications

Construction with cementitious materials via 3D printing requires a highly thixotropic behavior, which is challenge for construction industry. In this work facile and low-cost gelatin-modified thermal responsive smart cement paste formulation was developed extrusion-based in cold environments The paste's temperature-dependent rheological properties were characterised, the underlying mechanism explored. At room temperature, modified presents similar as reference paste. After resting 10 min at 5 °C, has yield stress of 1900 Pa times that Moreover, mechanical are comparable to or higher than later age. Our approach may inspire manipulation rheology through facilitates smartly controlled concrete printings.