| 摘要 |
PROBLEM TO BE SOLVED: To provide a new simple spray surface treatment method at a low cost, having high reliability and to provide a spray surface treatment working vehicle used for the method. SOLUTION: This spray type surface treatment working vehicle sprays, at least, binder and aggregates in this order while advancing in the forward direction. In this case, a binder spray bar extending in the working vehicle width direction and a plurality of binder spray nozzles 2 attached to the binder spray bar are provided rearward from the working vehicle 1 rear wheels and an aggregate bin 3 having an aggregate discharge port which can freely adjusts the opening length in the working vehicle 1 width direction and the opening length in the direction crossing at right angles with the working vehicle 1 width direction is provided in its rearward.
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