Ditapis dengan
Ground Penetrating Radar Inspection Experiment on a shield Tunnel Segment and…
With the purpose of testing the effectiveness and feasibility of Ground Penetrating Radar ( GPR) in settling a common construction quality problem which is the thickness estimation of backfill grouting, we conduct a field experiment in Shanghai. A shield tunnel segment, with half of its outer surface covered by a wooden box, is put vertically on the ground. We inject the concrete grout into the…
Natural Ventilating Behavior of Z-Shaped Pedestrian Underpass in Wuhan
In southern China, The moisture condensation is common in the urban underground facilities due to the humid and rainy climate. In order to reduce the maintenance costs the natural ventilation should be used in urban pedestrian underpass as far as possible. The planar layout of the underpass is very important for its ventilation effect so as to avoid condensation problem. Taking the Cuiliu stree…
Cost-Effectiveness Evaluation of Pavement Maintenance Treatments by OPTime
The cost-effectiveness of different maintenance treatments including micro surfacing, HMA overlay and mill & fill were evaluated by using OPTime. The treatment effectiveness was calculated as the difference in computed areas associated with the post-treatment performance indicator curve and the do-nothing curve. It was found that mill & fill had the highest unit costs, followed by HMA overlay a…
