Concrete floor finishing is one of the most physically demanding jobs in construction. Common features of these robots include operation on soft concrete, requires simple input of work area boundaries, operation in any direction without limits and use steel trowel end effector. The concrete floor robots had several new generations from its original prototype. The modern concrete floor robot can perform precision troweling of concrete floors to tolerance that human cannot achieve as consistently. There has been a successful progress in the field of concrete flooring robot in the past few years.
The intelligent horizontal distributor, which lays concrete while automatically avoiding obstacles such as columns, indicates the future direction of development for construction robots. The twin trowel concrete floor-finishing robot consists of a pair of trowels, each of which rotates four plastering blades, and does not have any mechanism like wheels for its locomotion. However, while leveling the concrete floor, it can move in any direction with the unbalanced friction forces occurring between the trowels and the floor, which are controlled by adjusting the posture of the trowels
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