Technical specifications for preventive maintenance of highway asphalt pavement Technical specifications for maintenance of highway asphalt pavement Research and application of preventive maintenance strategy of asphalt pavement Technical specification for construction of ultra-thin overlay asphalt pavement Specifications for design of highway asphalt pavement Technical specifications for maintenance of highway cable-supported bridge Technical specification for warm mix asphalt pavement Technical specifications for geological mapping of highway engineering Technical specifications for strengthening of highway tunnel Technical specification for hot in-place recycling construction of asphalt pavement