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Stripping Value of Aggregates = (uncovered area aggregates / Total area of aggregates) x 100 The stripping value of aggregates = . % At least 3 sample aggregates should be tested, and the average value is the stripping value of the aggregates. The stripping value should not be more than 5% of the total aggregate area. Lab Report Precaution The procedure of Stripping Value Test on Aggregates The procedure of the stripping value test involves the following series of steps: 1. A well-cleaned aggregate sample passing through a 20mm IS sieve and retained on a 12.5mm sieve is taken. 2. About 200gm of the sample is heated in the oven at a temperature of about 150 degree Celsius. 3. After 24 hours the beaker is taken out, cooled at room temperature and the extent of stripping is estimated visually while the specimen is still under water. The stripping value is the ratio of the uncovered area observed visually to the total area of aggregates in The result of the stripping test give an indication regarding susceptibility of aggregates to the action of water, or moisture. The more the stripping value, the poorer are the aggregates from point of view of adhesion. IRC has specified the maximum stripping value of 25% for aggregates to be used in bituminous road construction. You’ll also like: The stripping value of aggregates is determined as the ratio of the uncovered area observed visually to the total area of aggregates, expressed as a percentage. Bitumen and tar adhere well to all normal types of aggregates provided they are dry and are not exceptionally dusty. STANDARD IS:6241-1971 DEFINITION The stripping value of aggregates is determined as the ratio of the in covered area observed visually to the total area of aggregates, expressed as a percentage. APPARATUS Heat resistant glass beaker of 500 ml capacity. 20mm and 12.5 mm IS sieves. Mixer. Balance of capacity 10Kg and sensitivity 1 gram. Stripping value is expressed as uncovered surface area of aggregate by visual examination to total surface area. i. Percentage of area of aggregates uncoated by immersion in water = ii. Therefore, stripping value = • The mean of three results are reported as stripping value of the tested aggregates to thenearest whole number. The results of the stripping test given an indication regarding the susceptibility of aggregate to the action of water, or moisture. The more the stripping value, the poorer are the aggregate from point of view of adhesion. IRC has specified the maximum stripping value of 25 percent for aggregate to be used in bituminous road construction. The stripping value of bitumen or asphalt is obtained by means of visual experiment. The IRC (Indian Road Congress) explained the asphalt stripping value of aggregate should not be more than 25 percent. What is the need of stripping value of aggregate? You need to check the stripping value of aggregate before the construction of pavement. The stripping value is the ratio of the uncovered area observed visually to the total area of aggregates in each test, expressed as percentage. The mean of three results is reported as stripping value of the tested aggregates and is expressed as the nearest whole number. CALCULATION Road aggregate stripping value = percent fines = W2/W1 x 100 Jun 06, 2016The test is of significance to both bitumen and aggregate because one particle of aggregate may be satisfactorily with one binder and unsatisfactory with the other binder. The same can be said about the binders. The specifications of the ministry of transport and shipping, value by static impression method as per I.S.6241-1971 is recommended. Oct 04, 2020The stripping value is the ratio of the uncovered area observed visually to the total area of aggregates in each test, expressed as percentage. The mean of three results is reported as stripping value of the tested aggregates and is expressed as the nearest whole number. CALCULATION Road aggregate stripping value = percent fines = W2/W1 x 100 Aug 17, 2011What is the stripping value of aggregate? Wiki User. ∙ 2011-08-17 13:58:29. Add an answer. Want this question answered? What Apr 13, 2014This test gives the procedure for determination of the stripping value of aggregates by static immersion method, when bitumen and tar binders are used. Stripping-value-test-on-aggregates. Apparatus: The apparatus required for this experiment are: 1. Thermostatically controlled water bath. 2. Oven to heat aggregate. 3. Sieves of sizes 20 mm Jun 13, 2014In this study, although the results of the stripping tests ranged between 20 and 30 %, which implies that all of the granitic rock aggregates examined had low stripping resistances, we did find a good correlation between the total percentages of orthoclase and hornblende and the stripping value of the granitic rock aggregate (Fig. 9). The Aggregate Bitumen Stripping Value Test. The film-stripping test is used to measure the resistance of bituminous mixture to stripping of bitumen from the rock particles. The stripping value of aggregates is determined as the ratio of the uncovered area observed visually to the total area of aggregates, expressed as a percentage. If the road aggregatesare dry and free from dust then the bitumen adheres well to all normal types of aggregate. In the absence of water there is practically noproblem ofadhesion with bituminous Sep 29, 2021Adhesion problem occurs when the aggregate is wet and cold. This problem can be dealt with by removing moisture from the aggregate by drying and increasing the mixing temperature. IRC has specified the maximum value of stripping value of aggregate not to exceed 5%. Download Solution PDF. Share on Whatsapp India’s #1 Learning Platform this standard. if the final value. observed or calculated, is to be rounded off, it shall bd done in accordaice with IS : 2-1960*. . 1. SCOPE 1.1 This standard covers the procedure for determining stripping value by static immersion method of aggregates used in road construction with Title of Legally Binding Document: Method of Test for Determination of Stripping Value of Road Aggregates Number of Amendments: Equivalence: Superceding: Superceded by: LEGALLY BINDING DOCUMENT Step Out From the Old to the New--Jawaharlal Nehru Invent a new India using knowledge.--Satyanarayan Gangaram Pitroda Stripping value of aggregate: IS : 6241-1971: Summary Aggregates influence, to a great extent, the load transfer capability of pavements. Hence it is essential that they should be thoroughly tested before using for construction. Not only that aggregates should be strong and durable, they should also possess proper shape and size to make the The aggregate crushing value provides a relative measure of resistance to crushing under gradually applied crushing load. The test consists of subjecting the specimen of aggregate in standard mould to a compression test under standard load conditions (Figure 22:1). IRC has specified the maximum value of stripping value of bitumen not to Feb 08, 2021In order to study the stripping mechanism of asphalt aggregate comprehensively, the conditions of the stripping of asphalt aggregate are divided into two types, which are anhydrous environment and water environment. The stress generation and release of asphalt film under anhydrous environment and the differences in stripping mechanism of asphalt film Oct 27, 2021The stripping phenomenon in asphalt mixtures is one of the most important types of distress in flexible pavements . Usually, the affinity between aggregate and bitumen is described by four theories, isolated or combined : molecular arrangement, mechanical adhesion, surface energy and chemical reaction. Several factors affect these theories Jun 06, 2016The test is of significance to both bitumen and aggregate because one particle of aggregate may be satisfactorily with one binder and unsatisfactory with the other binder. The same can be said about the binders. The specifications of the ministry of transport and shipping, value by static impression method as per I.S.6241-1971 is recommended. Aug 17, 2011What is the stripping value of aggregate? Wiki User. ∙ 2011-08-17 13:58:29. Add an answer. Want this question answered? What Aggregate Bitumen Stripping Value Test. The film-stripping test is used to measure the resistance of bituminous mixture to stripping of bitumen from the rock particles. Jan 26, 2022However, under traffic effect, stripping value of all 3 types of coarse aggregate coated with all three types of bitumen was found to be 5% or more. From the above discussion, it is clear that the stripping value of coarse aggregate is greatly affected by the change in water bath temperature from 40 °C to 60 °C. Sep 29, 2021Adhesion problem occurs when the aggregate is wet and cold. This problem can be dealt with by removing moisture from the aggregate by drying and increasing the mixing temperature. IRC has specified the maximum value of stripping value of aggregate not to exceed 5%. Download Solution PDF. Share on Whatsapp India’s #1 Learning Platform Description. The loss of bond between aggregates and asphalt binder that typically begins at the bottom of the HMA layer and progresses upward. When stripping begins at the surface and progresses downward it is usually called raveling.. Although the displacement of asphalt on the aggregate particle surface by water (stripping) is a complex phenomena and is not yet fully significant increase in stripping is o bserved having a good correlation w ith an R 2 value of 0.7223 and P-value of 0.032. Presence of calcium ions (Ca) in the asphalt-aggregate mixture and precoating the aggregate improved stripping resistance considerably. Stripping of asphalt films from aggregate surfaces occurs when there is a loss of adhesion between the aggregate surface and the asphalt cement. This is primarily due to the action of water or moisture. Feb 08, 2021In order to study the stripping mechanism of asphalt aggregate comprehensively, the conditions of the stripping of asphalt aggregate are divided into two types, which are anhydrous environment and water environment. The stress generation and release of asphalt film under anhydrous environment and the differences in stripping mechanism of asphalt film Feb 09, 2016Stripping (separation) of the binder film from the aggregate through the action of water may make an aggregate material unsuitable for asphalt concrete mixtures. Such material is referred to as hydrophilic (water loving). Many of these materials may be used with the addition of a heat stable additive that reduces the stripping action. Jul 01, 2019The apparatus of the aggregate impact value test consists of: A testing machine weighing 45 to 60 kg and having a metal base with a plane lower surface of not less than 30 cm in diameter. Level and plane concrete floor of minimum 45 cm thickness are used to support it. The base of the machine should also have provisions for fixing its base. Sep 12, 2015The crushed aggregate is allowed to pass through 2.36 mm IS sieve. And the impact value is measured as percentage of aggregates passing sieve (W2) to the total weight of the sample (W1). Aggregate impact value = (W1/W2)*100. Aggregates to be used for wearing course, the impact value shouldn’t exceed 30 percent. trapped phasesrelative to the advectivetransport.A higher On the microscalethe normalized form of the aggregate value of cri amountsto a faster responseof the aggregate diffusionequationis concentrationto the vapor concentration,and vice-versa.Lo- cal equilibriumphasepartitioningis a limiting casewhen % is muchgreaterthan unity. This would also increase the stripping value of these granitic samples which is pointed out by Bagampadde et al. (2006). According to Yılmaz et al. (2003), stripping value 
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