Abstract：
The design width of a bituminous sand hard shoulder of a highway project in Benin of Africa is only 1.5?m, which is smaller than the minimum spreading width of ordinary spreading machine. Local traditional manual spreading is slow and is difficult for quality control. Considering the construction period and construction cost, the Chinese construction technique thinktank innovated the construction process and realized certain modification of ordinary spreading machine, to successfully change the manual spreading of bituminous sand hard shoulder into mechanical spreading and to effectively solve the problems in uncontrollable construction schedule and construction quality.
