Multi-objective optimization of the mix proportion for dune sand concrete based on response surface methodology

•The slump, compressive strength and split tensile strength of dune sand concrete (DSC) are experimentally investigated.•Central composite design method is used to design the experiments.•Response surface methodology is applied to the multi-objective optimization of DSC.•The optimal slump, split tensile strength and dune sand to fine aggregate ratio of concrete can be achieved in line with certain strength.