Recent patents on construction additive manufacturing method

Background: Additive manufacturing (AM) in construction is one of the important approaches in AM technology. Researchers and engineers working with AM technology often need to deal with issues in large item manufacturing, including manufacturing size limitation, instability of long-distance movement, raw surface, high cost on manufacturing support, and reducing manufacturing time. Objective: To provide an overview on the development of construction AM and then an initial insight to achieve construction AM with novel solutions to practical problems. Method: We presented a detailed realization of these categorised approaches and make comparisons among these methods to identify optimal solutions for a range of problems. Results: Recent patents and scholarly articles were addressed and the future of this technology was prospected. Future developments of construction AM were identified.