Abstract
This paper investigates asphaltic concrete core embankment dam in relative to the clay core embankment dam so that it is vital from the perspective of safety and controlling seepage. Plaxis 8.5, finite element based software was employed for analysis of the dam and Geostudio 2012 for seepage analysis. Relatively the result of analysis shows that good result of safety factor has been found in asphalt concrete core dam with regard to the stability of the dam during steady-state condition and end of construction. During steady-state condition, the factor of safety computed for clay core dam was 1.466, and the dam fails to attain the minimum factor of safety recommended by USACE. But, under this similar condition stability analysis result of asphalt concrete core dam gave a good result of 1.661 which is found within the recommended range. Likewise, at the end of construction, the factor of safety computed for clay core dam was 1.553, but, under this loading condition (end of construction) stability analysis result of asphalt concrete core dam gave a good result of 1.600 which keeps the dam more stable. The seepage analysis result of asphaltic concrete core dam is also insignificant. Generally, application of asphalt concrete core in rock fill dam can fulfill the basic requirement and minimum factor of safety under all loading condition, and dam of such types is seepage free as it shown here and approved by many other researchers’ extensive works.
Highlights
Everywhere over the world water requirements are not similar to its availability
The asphaltic concrete core embankment dam is gaining its popularity as the advantages of this design become more apparent from the perspective of safety, economy, and controlling seepage [14]
The objective of the study is to examine the relative performance of asphalt concrete core and clay core embankment dam under different loading condition
Summary
Everywhere over the world water requirements are not similar to its availability. Building a dam of any type is one of the simple concepts for fulfilling this water requirement. The asphaltic concrete core embankment dam is gaining its popularity as the advantages of this design become more apparent from the perspective of safety, economy, and controlling seepage [14]. Asphalt concrete can be placed both by hand inside the formwork with the filter outside and it can be placed and compacted by machine [3]. The former way of placing core is time-consuming and expensive, but usually necessary, to establish a horizontal base for the core paver. The documented site performance of asphaltic concrete core embankment dam, along with their high degree of water. Great Ceres dam was the first asphalt concrete core embankment dam constructed in the continent of Africa, in South Africa by vieddekke contractor [5]
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