Study on causes of asphalt pavement diseases of expressway and treatment and maintenance measures;

Discussing the maintenance methods of expressway appurtenant works;

Based on different maintenance methods,the tests research on all kinds of physical capabilities of gypsum cementitious materials.

Union Taiyuan\'s path actual makes the reasonable maintenance method by road surface each kind of plant disease and the use function.

Overview of the highway engineering foundation treatment methods

Brief talk on disease of asphalt concrete pavement and corresponding treatment method

According to problems existed in soft roadbed some treatment methods are introduced,which include replacement method with stone chip,cement injection pile and so on in order to ensure the stability of roadbed.

Combined with the practice of construction and maintaining,it analyzes the types and reasons of half-steel base bitumen concrete surface cracks,brings forward the protecting measures of cracks during construction,elaobrates the dealing methods of cracks,so as to solve the cracks problems on road surface,and prolong the using life of road surface.

In the light of the diseases that often appear on the bituminous concrete pavements such as pavement cracking, loosening, pitting, settling, tracking and so on, this paper analyzes their causes, and puts forward some corresponding treating methods and preventive countermeasures.

According to the quality problems easy to appear in the making of precast hollow slab,it analyses the reasons of inaccurate precast location, unsuitable bottom width,insufficient protecting layer,and inaccurate beam length,and points out the treating method,so as to guarantee the construction quality of precast beam.

Analyzing the causes of damage of higher level asphalt pavements and the solutions;

Design for subgrade in swamp and solutions;