slake durability test pdf
After 10 min, the drum is removed, 5.1 The test method is used to estimate qualitatively the durability of weak rocks through weakening and disintegration resulting from a standard two cycles of wetting and Date: November 2021. Slake Durability Test Apparatus has been developed to assess the deterioration of rocks over a period of time when sub-jected to water immersion. Units The values stated The results of the slake durability tests are reported as an index (Id 2). The slake durability test was carried out for the samples listed in Table 1 by using the standard testing method developed by Franklin and Chandra (1972) and recommended by the International Society for Rock Mechanics and standardized by the American Society for Testing and Materials .To perform the test, rock lumps (10 pieces of about 4060 g each) were 3.6 Slake Durability Slake durability tests were performed on 69 CS samples to assess their resistance to disintegration when subjected to two standard cycles of drying and wetting. = Slake durability index test I dn = Slake durability index after n cycles n = Number of cycles of slake durability index test W i = Mass of drum plus oven-dried specimen first cycles of slake durability index test W n = Mass of drum plus oven-dried specimen n Slake Test The slake test measures the stability of soil when exposed to rapid wetting. 3.1 slake durability tests 3.2 protodyakonov tests 3.3 los angeles abrasion test 28 29 29 32 34 chapter 4 4.0 results,analysis and conclusions 4.1 slake durability test 4.2 protodyakonov Finally, the slake dur ability test (]) uses the additional feature of mechanical agitation to accelerate slaking under laboratory conditions. Although the test is relatively rapid and easy to perform, the results are very subjective. Both the treated samples had the poorest index. The slake durability test procedure based on Slake Durability Apparatus. rock exists, assess the slake durability of these rocks through simple test methods, provide the user direction in the interpretation of the test results, and discuss appropriate mitigation strategies for the design of structural elements such as spread footings, driven piles, and drilled shafts in slake-prone, low-durability rock. The main purpose of this 'slake-durability test ' is to evaluate the weathering resistance of shales, mudstones, siltstones and other clay-bearing rocks.Samples are The test aims to accelerate weathering to a maximum by combining the The slake durability test was created to assess the impact of alteration on rocks by determining their resistance to degradation and breakdown during wetting and drying cycles. However, due to the different shapes of sample pieces, such as, irregular shapes displayed mechanical breakages The slake durability index test has been used as a simple laboratory test for assessing the influence of weathering on rock and its disintegration due to its fastness and easiness in application, simplicity and low cost. This index is the weight of the dry sample remaining in the test The possible improvement of the modified jar slake test as a predictor of durability was measured by plot- ting standard and jar slake values against slake durabil- ity values for all 50 This test method covers the determination of the slake durability index of a shale or other weak rock after three drying and two wetting cycles with abrasion effects. Hasan Arman. The values given in parentheses are mathematical conversions to inch-pound units, which are provided for information only and are not The slake durability apparatus consists of a motorized drive unit which is mounted on a baseplate and which can drying and wetting. Standard Test Method for Laboratory Determination of Abrasiveness of Rock Using the CERCHAR Method. A short summary of this paper. Applicability to Soil Cohesionless sand Traditional prediction (e.g., Shields parameter) Modified slake durability test should work on soil with a minimum amount of cohesion or cementation Soil cubes that will stand unsupported on a lab bench Problem soil samples Stickyclay(sticktothebasketoreachother)Sticky clay (stick to the basket or each other) This test is qualitative and should be measured on air-dried soil fragments or aggregates. In summary, the ASTM procedure recommends selecting ten sample specimens, oven-drying them, and rotating them in the slake durability drum partially immersed in water. ASTM D4644 08. Download full-text PDF Read full-text. The rock samples are dried and then submitted to wear stress inside a drum which is rotated into water. Most of the other reported durability test procedures represent For the test, representative shale samples each weighing 500g were Journal of Earth Science & Climatic Change, 2016. This document was uploaded by user and they confirmed that they have the LoginAsk is here to help you access Durability Testing Of Aggregates quickly and handle each specific case you encounter. Similar discrepancies were also noted for the other stones studied. Download Download For example, the durability of AGA was evaluated as frost susceptible by using a saturation coefficient, however, it was evaluated as very-high-to-good durability based on the slake durability index, wet-to-dry strength ratio, and static rock durability index. The percent loss of mass is referred to as the slake durability index. Standard Test Method for Slake Durability of Shales and Similar Weak Rocks. Author: Izzat Razak. The slake 140mm x 100mm long, 2 mm mesh) rotating at 20 rpm, 2 transparent tanks, basement and digital timer. The slake durability index (SDI) test is widely used to determine the disintegration characteristic of the weak and clay-bearing rocks in geo-engineering problems. REPORTING OF RESULTS 6.1 The report shall include the following information for each sample tested: a) The slake 9. Journal of Earth Science & Climatic Change, 2016. Download Lab Report Slake Durability. UNE EN ISO 14689-1. The starch binder and the red soil reduced this value. 3.7. As the rock lumps disintegrate, the new surfaces formed are immediately exposed to further slaking. Slake Durability Test on Lower Oligocene Limestones from Al Ain City, United Arab Emirates. An example of the use of rock durability tests is in the evaluation of shale in rock fill embankments. ASTM D4644 Typical Apparatus This test method has been developed to assess the deterioration of rocks over a period of time when subjected to water immersion. The slake-durability index Id is the percentage ratio of final to initial dry weights of rock in the drum. The rock samples are dried and then submitted to wear stress inside a drum which is rotated in water. Materials needed to measure slaking: tive indicator of soil biologicalcomplete soil stability kit activity, energy flow, and nutri-sampling scoop distilled water (1 L) This test method is used to assign quantitative durability The best slake durability test index was 91% for the animal-binder-treated sample. Slake durability test of the rock materials This test is intended to assess the resistance of rock sample to weakening and disintegration when subjected to two standard cy 1.4 Theoretical Background The slake durability test, proposed by Franklin and Chandra (1972), is a standardized measurement of the weight loss of rock lumps when repeatedly rotated This Paper. Read full-text. Download citation. Size: 96.9KB. Slake durability test results from 3 different drilling points, shows that within 9 months, has not seen the decreasing effect of durability. Units The values stated in SI units are to be regarded as standard. PDF | The slake-durability test is regarded as a simple test for assessing weathering of rocks. Durability Testing Of Aggregates will sometimes glitch and take you a long time to try different solutions. The durability index showed a trend similar to that of the UCS results. guidance to assess the slake durability of these rocks through simple test methods; direction for the interpretation of the test results; and discussion of appropriate mitigation strategies for the Slake Durability Test on Lower Oligocene Limestones from Al Ain City, United Arab Emirates. This value can be classified as an extremely high grade. The slake durability test was conducted in accordance with ASTM D 4644-87, with a few minor modifications. The test is performed in a steel drum which is submerged below 20 mm of water with rock samples, total 450 550 g. The drum is rotated for 10 Samples with durability above 95 per cent were those that were well cemented or indurated and which should by any system be classified as of extremely high slake-durability. Subjects: Science and technology Earth Sciences and Geography. Download Download PDF. The 2 cycle Slake durability test developed by Franklin and Chandra (1972) and standardized by the American Society for Testing and Materials, ASTM D4644-08 (2008) which evaluates the durability of rock in terms of the slake durability index (SDI), was adopted for the study. The following materials are required to perform the slake durability test: slake durability device: o A test drum comprised of a 2.0 mm (No. Hasan Arman. To date, the slake durabil ity test is the only procedure acknowledged as part of an accepted industry standard (]). ASTM D7625 10. Copy link Link copied. The test method is used to estimate qualitatively the durability of weak rocks in the service environment.(1-7). The slake-durability index Id is the percentage ratio of final to initial dry weights of rock in the drum. Download full-text PDF. This equipment has been developed to assess the durability of rock to weakening and disintegration when subjected to the simulated effects of climatic slaking. The Jar Slake test is a visual observation-based immersion test used to qualitatively assess the durability of shale. The test aims to accelerate weathering to a maximum by combining the processes of slaking and sieving. This test method covers the determination of the slake durability index of a shale or other weak rock after three drying and two wetting cycles with abrasion effects. Quick Reference. Type: PDF. Slake-durability test used to determine the decrease in strength and From: slake-durability test in A Dictionary of Earth Sciences . Full PDF Package Download Full PDF Package. 1. Scope 1.1 This test method covers the determination of the slake durability index of a shale or other similar rock after two drying and wetting cycles with abrasion. 1.2 All observed and calculated values shall conform to the guidelines for significant digits and rounding established in Practice D 6026. Test results are expressed as a slake-durability index for each particular rock. Slake:durability Index ( Id2 ) = 2yD- X 100 percent 6. Slake apparatus code 32-D0546/A version with 2 rotating drums Detail of quick-release drive units Detail of water level indicator 32-D0546/A Slake durability apparatus to ASTM D4644 composed by motorized drive unit with 2 test drums(dia. The slake durability index (SDI) test is widely used to determine the disintegration characteristic of the weak and clay-bearing rocks in geo-engineering problems. Slake-durability tests were performed on unweathered shale samples while consolidated undrained triaxial compression tests were performed on compacted weathered shale samples. The test data suggest that the clay fraction of crushed unweathered samples correlates with the consistency index. The test is performed di erent times and the wear is given by the loss in weight of the sample. The slake durability index (SDI) test is widely used to determine the disintegration characteristic of the weak and clay-bearing rocks in geo-engineering problems. 2 Slake durability test The slake durability test (Gamble [6], Franklin and Chandra [5] and ISRM [12]) was originally developed to determine the durability of weak rocks such as shale and mudstones. 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