Old Cement Concrete Pavement Structure Research And Applied Research

The construction of China's past, a lot of cement concrete pavement, are faced with the recent overhaul, reform and improve the task of grading the road. Since the majority of ordinary cement concrete pavement for concrete pavement, seams wrong units at the end plate from outer space, broken plates and mud pump such as a serious problem affecting the service life of concrete pavement Shop transforming effect of processing.In this paper, 104 State Road, Tai'an - Qufu above entities transformation project based on the old cement concrete pavement investigation and evaluation of road conditions, analysis of the pilot section of the volume of traffic, traffic composition, surface structure and construction of the situation assessment, and the causes of damage analysis, in accordance with the principle of fracture mechanics of cement concrete pavement asphalt cracks and expansion reflex mechanism analysis, additional layer of structural design and stress absorbing layer further study to address the theoretical system of reflective cracking.Through the large gap-graded asphalt gravel and crushed stone layer to absorb the stress to do a systematic analysis, verification and rational design methods; through the layer increases the use of the structure and properties of materials designed to carry out a study and submit a design methodology, technical requirements and targets, quality control inspection and standards, construction technology and research. Road Test inspection of track testing, observation of cracks in the road test, track, anti-sliding performance, deflection, and flatness of the change, verify that the structure of several technical and economic feasibility of rehabilitation programs for the most reasonable and Paving layer design method to verify the feasibility.