A study on comparing D1557 and D4718 ASTM standard tests to select the appropriate criteria for controlling the crust compaction of Herat earthen dam and evaluating the results of test embankment
Journal Title: Journal of Research in Ecology - Year 2016, Vol 4, Issue 2
Abstract
Herat dam is located at the south-western part of Herat region at Yazd province, Iran. This dam is an earthen dam with clay core. Coarse aggregate materials used in the dam crust are exploited from Hasan Abad village mines located at about 12 Km from the site. These materials completely (100%) pass through a sieve of 200 mm size and sand component constitutes more than 60 percent of the materials. In the present study, modified compaction as well as minimum and maximum density tests were used based on the ASTM standard to evaluate and control the compaction of crust materials. According to the type of the grading curve of materials used in Herat dam and results obtained from test crust compaction, it was shown that ASTM standard modified compaction calculation methods are not suitable for controlling the compaction of crust materials, and it is better to control the compaction based on the relative density. Moreover, compaction criteria was tested and determined based on the results obtained from operating the test embankment according to the thickness of embankment, type of the roller, number of roller passes, and type of the material and moisture content
Authors and Affiliations
Elham Zare, Hamid Mehr Nahad, Afshin Alemi
Keywords
Related Articles
- EP ID EP253417
- DOI -
- Views 82
- Downloads 0
Comparing the smart model (artificial neural network) and experimental models to assess the watershed runoff of Sarney’s dam
Long time ago, various equations were presented by researchers to managethe water resources, which had wide usage in hydrologic sciences. In this paper, by using the observational dates to estimate the runoff, the applic...
Design of a correction and rehabilitation center in Ardabil focusing on teen security
Teenagers of Correction and Rehabilitation Center in Ardabilare adolescents who have made an incorrect decision at a moment as a result of a momentary excitement and have changed their lives. Considering a very important...
Effect of planting method on agricultural characteristics of kidney beans (Phaseolus vulgaris L) in Khuzestan
To evaluate the effects of plant density and planting pattern on the process of growth of kidney bean varieties, an experiment was conducted by using factorial split plot in a completely randomized block design with thre...
Effect of partial replacement of nitrate with annatto seeds powder in the physical and chemical properties of chilled beef sausages
The objective of the present study is to evaluate the partial replacement of nitrate with annatto seeds powder at different percentages in the physical and chemical characteristics of chilled beef sausages under 4°C for...
Investigation of the quality status of educational services based on Servequal model (Case study: Estahban's Payem-e-Nour University) Keywords:
Evaluation of services is a concern in academic institutions for improving the quality criterion. By finding the gap between students' expectations and understandings of offered services in different dimensions, we can p...