Annual Conference on Mining for Sustainable Development

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Browsing Annual Conference on Mining for Sustainable Development by Subject "Aggregate impact value"

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    Cost reduction of quality controlling in metal quarrying
    (Department of Earth Resources Engineering, 2011-11) Basnayaka, LR; Samarathunga, SPGN; Susantha, TKJ; Nawaneethan, M; Wickrama, MADMG; Samaradiwakara, GVI; Dassanayake, ABN; Ratnayake, NP; Abeysinghe, AMKB
    Quality controlling of aggregates is a major concern in aggregate industry. Cost of quality controlling can be minimized via finding correlations between different test on aggregates and rocks. Los Angeles abrasion value test, Aggregate impact value test, Uni-axial compressive strength test, Point load index and Schmidt hammer rebound value test were performed on a total of 22 gneissic metamorphic rock samples, which were collected from selected two quarries in Meepe and Nebada areas of Sri Lanka to investigate correlations between these test parameters. Correlations were developed between each parameter to reduce the cost of quality controlling by means of regression analysis. The study found a strong correlation between Loss Angeles abrasion value test and Aggregate impact value test. By analysing correlation between tests, mineralogy and rock properties validity of this correlation can be proved for common application
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    Prediction of the variation of aggregate properties in quarry mining, based on exploratory core samples
    (Department of Earth Resources Engineering, 2006-10) Kumaratunga, WDKS; Mendis, BMSW; Rishanthan, Y; Sandanayake, DSS; Puswewala, UGA; Samaradivakara, GVI; Karunaratne, S
    Quarry industry is a growing industry because of the need of aggregates for the construction industry. One of the most widely used construction material is aggregate which is mined in quarry mines. Most frequently asked parameters for the quality of quarry aggregates are Loss Angeles Abrasion Value and Aggregate Impact Value, which are unpredictable at the initial stages of quarrying for the rock underneath the surface. Hence, the risk of running the quarry is always there. Therefore this article examines the variation of aggregate properties in quarry mining, based on exploratory core samples. The study is carried out by using core samples from a selected quarry in the western province, Srilanka. This research indicates the relationship between Uniaxial Compressive Strength (U.C.S) and Los Angels Abrasion Value (L.A.A.V), between U.C.S and Aggregate Impact Value (A.LV), and between L.A.A.V and A.LV. correlation between the parameters are indicated, and a relatively strong correlation is found between L.A.A.V and A.LV. these will assist to initially predict some test results based on other test results, and thus save initial expenditure on testing for quality of aggregates.