Quality Management of Asphalt Concrete Production: a case study of Hsuehshan Tunnel paving construction

• Main Authors: Shih-ning Lang, 郎世寧
• Other Authors: Jyh-dong Lin
• Format: Others
• Language: zh-TW
• Published: 2008
• Online Access: http://ndltd.ncl.edu.tw/handle/k58gay

碩士 === 國立中央大學 === 土木工程學系碩士在職專班 === 96 === Establish standards for quality, process, and acceptance are major three keys for the management of construction quality control. In addition, to the owner, it is necessary to build a construction method which is able to cope with local regulations and environmental influences. Disputes in construction can be usually attributed to unclear contractual terms regarding to final acceptance methods and quality inspection. For instance, Construction Agency used to implement asphalt concrete quality control through Construction Supervisor’s site inspection; however, the inspection of public construction is completed with random picks which is also part of the final acceptance in the present. Therefore, a construction conflict may be caused easily once if result of inspection is unsatisfactory. Through asphalt pavement works of Hsuehshan Tunnel, this study is an examination of the analysis and critique found in production process of asphalt concrete as well as seek critical approaches to mitigate the risks during the production with complete stress test. Moreover, QC/QA methods to acceptance were implemented in this study to verify the high quality level of asphalt concrete mixtures to Hsuehshan Tunnel. The results show aggregate down-graded phenomena are significant during the production of mixture for sieves #4 and therefore hot mixture should tend to be in the coarser side. When performing Standard Test Method for Mechanical Size Analysis of Extracted Aggregate, carefulness is important because little error deeply affects the accuracy of the result. The PWL of mixture reaches to 95.0%~ 99.8% in the cases studied in this research. From above, QC/QA quality codes of acceptance demonstrate their superiority over other methods. It is highly recommended that QC/QA quality codes of acceptance shall be implemented into consideration for the next revision of construction methods.