Optimizing concrete pump maintenance in the construction sector using enhanced MCDM techniques

India's construction sector has made significant contributions to national growth. Heavy machinery is vital to construction. A concrete pump is an essential piece of equipment used for producing, mixing, and pouring concrete. From an execution and maintenance perspective, this equipment is vital. In order to prevent malfunctions when pouring concrete, a better maintenance plan is required for the concrete pump. The example company currently struggles with determining which maintenance tasks should come first, which drives up maintenance costs, reduces machine availability and profitability, and reduces production. The current effort aims to enhance maintenance strategies by utilising several multi-criteria decision-making (MCDM) techniques, such as modified TOPSIS, VIKOR, and PROMETHEE, to identify the most critical reason for failure and enhance concrete pump maintenance decision-making. Three MCDM strategies are then employed to construct the maintenance criticality ranking after the weight of each criterion is calculated using the fuzzy SAW method. Using three MCDM approaches, the best maintenance strategy is determined out of nine likely causes of failure. According to modified TOPSIS, VIKOR, and PROMETHEE rankings, material wear out is the most critical cause of failure, followed by rubber quality, and high pumping strokes are the least critical factor.