Asphalt Pavements

ASPHALT PAVEMENTS 5

AsphaltPavements

Pengfei,L., Jinghui, L., Dexin, L., &amp Zhizhong L. (2014). The FailureReasons and Testing Methods of the Asphalt Pavement. AdvancedMaterials Research,(1030-1032), 1120-1122.

Thearticle discusses the factors to consider when constructing asphaltpavements so as to reduce damage. The influence of climate change, anot very mature technology, and the load of constructing roads aresome of the factors that facilitate asphalt pavement damage.Therefore, engineers have a bigger responsibility of improving thequality of pavements. The authors discuss the problems in theconstruction process, reasons for pavement damage, and how to spotdamages in asphalt pavement. They stipulate that asphalt damages arecaused by design problems. Besides meeting the requirements ofvehicles, asphalt pavements should also meet the requirements ofasphalt surface and water seepage. Therefore, construction of asphaltpavements should take into account local climate conditions,hydrology, and geology. Failure to observe these requirements maylead to construction of poor pavements. Likewise, asphalt aggregatesmay affect the quality of the construction. Asphalt pavementperformance evaluation, road surface roughness, anti slidingperformance, pavement rut, structural strength are some of themethods used to determine the quality of pavements. This article iscritical for civil engineers because it gives them an insight onfactors to consider when constructing asphalt pavements, and how tomeasure the effectiveness and quality of these pavements. It acts asa guide for constructing asphalt pavements.

Dong,Q., &amp Huang, B. (2012). Evaluation of Effectiveness andCost-Effectiveness of Asphalt Pavement Rehabilitations Utilizing LTPPData. Journalof Transportation Engineering,138(6),681-689.

Theabove article discusses the effectiveness and cost effectiveness ofrehabilitating asphalt pavements by investigating on the long termpavement performance. The purpose of the article is to address thecost of maintaining pavements, which seems to consume a significantamount of highway funds. Therefore, it is imperative to select theright pavement maintenance strategy to reduce the cost of maintainingfunds. The performance of pavement is measured by evaluating theinfluence of pavement thickness, overlay thickness, and trafficvolume, while at the same time considering their effectiveness andcost effectiveness. Increase I roughness and the benefits accruedfrom rehabilitation were used as the means of measuring pavement’seffectiveness. From the analysis, it was observed that pavements withthicker overlay and milling decreased roughness after beingrehabilitated. On the other hand, thin overlay and poorrehabilitation was costly as it increased the rates of deterioration.This article is relevant because it helps road constructors todetermine the most cost effective ways of constructing andrehabilitating pavements. It helps in solving the problem ofexpensive maintenance and rehabilitation of asphalt pavements, whichconsume a lot of highway funds.

Hu,J., Yu, X. &amp Tao, J. (2013). Innovative Chromogenic Materials forPavement Life Extension: Modeling Study of Surface Temperature ofSustainable Asphalt Pavement. InternationalJournal of Pavement Research &amp Technology,6(2),141-145. doi:10.6136/ijprt.org.tw/2013. 6(2).141.

Thisjournal responds to the issue of asphalt pavements durability, whichis affected by varying weather conditions. Typically, asphaltpavements are widely used in most highways because of theirrelatively low construction costs and good performance. However,changes in temperature affect their durability. The black color foundin asphalt absorbs lights raising the level of temperature, which hasa negative impact on its long term durability. This calls forinnovative technologies to reduce the impact of temperature onasphalt. This innovation involves incorporating thermochromicmaterials into asphalt with a purpose of improving the durability ofasphalt pavements. These materials reflect solar hence, reducingasphalt temperatures during the summer, while on the other hand,absorb solar during the winter. According to the study on thisarticle, thermochromic lowered the temperature of asphalt pavement.This article is relevant to the research because it offers analternative for reducing the cost of maintaining asphalt pavement.Road constructors may consider using this innovation to enhance theeffectiveness of asphalt pavements.

References

Dong,Q., &amp Huang, B. (2012). Evaluation of Effectiveness andCost-Effectiveness of Asphalt Pavement Rehabilitations Utilizing LTPPData. Journalof Transportation Engineering,138(6),681-689.

Hu,J., Yu, X. &amp Tao, J. (2013). Innovative Chromogenic Materials forPavement Life Extension: Modeling Study of Surface Temperature ofSustainable Asphalt Pavement. InternationalJournal of Pavement Research &amp Technology,6(2),141-145. doi:10.6136/ijprt.org.tw/2013. 6(2).141.

Pengfei,L., Jinghui, L., Dexin, L., &amp Zhizhong L. (2014). The FailureReasons and Testing Methods of the Asphalt Pavement. AdvancedMaterials Research,(1030-1032), 1120-1122.