| Summary: | 碩士 === 國立中央大學 === 土木工程學系碩士在職專班 === 94 === Abstract
Subject：A Study of Materials and Techniques for Partial Depth Repair of Rigid Pavement
Keywords: Partial depth repair, echo-impact method, ultrasonic method, repairing materials, reinforced repairing technique.
Rigid pavement possesses better loading capacity. On the current time, most of the domestic airports, for example Song-san Airport and Chung Kai-Shek Airport, adopted rigid-paving construction. These airports have operated for many years. The safe operative tenure is nearly due. Thus the pavement have showed worn-out signs, such as puming, faulting, skid-resistance, sides and corners disintegration, and joint seal damage etc. In the past years the effect of maintenance is far from perfect. The frequent maintaining work directly affected the operation of the airports. In order to improve the maintenance quality, lower down the maintaining frequency, and ensure the flight safety, this study designs a new scene operation program in Chung Kai-Shek Airport. It focuses on the partial depth repairing of corner and side cracks for the taxiway and apron concrete slabs. Six repairing materials and a cable wire reinforced technique were studied. The apparatus of Echo-Impact Method and Ultrasonic-Wave Method, hammer striking, and eye observation were used to evaluate the efficiency of maintenance. Furthermore, the measured results were analyzed by statistics methods.The results showed that the quality of the maintenance works relied not only on the selection of proper materials, the right techniques, the correct repairing procedures, but also on the cooperation of the working team. No matter how good the material and the techniques are used, one error caused by the personal negligence or a mini scale of the engineering work that does not follow the standard procedure is often the main reason to induce the failure of maintenance.
The study result shows the maintenance effects of the taxiway as follows: 1. the effect of material: polymer portland cement concrete ≈ portland cement concrete ＞inflexible Epoxy ≈ non- shrink. cement mortar ≈flexible Epoxy.>early strength concrete,amid them inflexible Epoxy>flexible Epoxy 2. the effect of Aspect ratio:Aspect ratio（＜＝1.5）＞Aspect ratio （＞1.5）. 3. the effect of cable wire : construction with cable wire ＞construction without cable wire . 4. the effects of depth maintenance：depth（＞14cm）＞depth（＜=14 cm.）。
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