Aggregate Material Property Specified Threshold Values Minimum 10% FACTa 110 Maximum aggregate crushing valueb 29% Liquid limit <25 Linear shrinkagec <2% Plasticity index (PI) <4 a 10% FACT (fines aggregate crushing value) is the force in kilonewtons required to crush a sample of aggregate passing the 13.2-mm and retained …
اقرأ المزيدCorrelation analyses among the measured parameters identified the aggregate crushing value as a promising alternative test method to quantify the crushing potential of aggregates and to adjust the gradation accordingly to produce mixtures with optimized volumetric properties.
اقرأ المزيدAGGREGATE CRUSHING VALUE TEST 1. Objective The aggregate crushing value gives a relative measure of the resistance of an aggregate to crushing under a gradually applied compressive load. With aggregate of aggregate crushing value 30 or higher, the result may be anomalous, and in such cases the ten percent fines value should be …
اقرأ المزيدThe aggregate sample undergoes a specified load under standardized conditions, producing a percentage mass of fines, which is then calculated as a ratio of the weight of fines passing through specified sieves to the total weight of the sample to determine the crushing value of the aggregate.
اقرأ المزيدAGGREGATE CRUSHING VALUE This test helps to determine the aggregate crushing value of coarse aggregates as per IS: 2386 (Part IV) – 1963. The apparatus used is Cylindrical measure and plunger, Compression testing machine, IS Sieves of sizes – 12.5mm, 10mm and 2.36mm Procedure to determine Aggregate Crushing Value i) The …
اقرأ المزيدReport the mean as the aggregate crushing value, unless the individual results differ by more than 0.07 times the mean value. In this case repeat the test on two further specimens, calculate the median of the four results to the nearest whole number, and report the median as the aggregate crushing value.
اقرأ المزيدThe Percentage Fines is the ratio of the mass of fines formed by the crushing process ... the maximum test load applied with the following formula:-X = Force to produce 10% Fines x (y + 4) 14 where X is the maximum force (kN) ... 01_03_Aggregate 10% Fines Value
اقرأ المزيدWhat is an aggregate crushing value? The resistance capacity of aggregate under gradually applied compression load is known as aggregate crushing value.The test that is performed to measure the relative resistance is called aggregate crushing value test.
اقرأ المزيدThe fineness modulus of aggregate is simply a measurement of the average size of the aggregate. It can be calculated with the help of different sizes of the sieve. Now, let us see some numerical Examples to calculate the fineness modulus of aggregate.
اقرأ المزيدThe aggregate crushing value gives a relative measure of the resistance of an aggregate to crushing under a gradually applied compressive load. With aggregate of aggregate crushing value 30 or higher, the result may be anomalous, and in such cases the ten percent fines value should be determined instead.
اقرأ المزيدTen percent fines value is defined as the load taken by the soaked sample at ten percent of fines. APPARATUS. ... Apply load at a uniform rate to cause a total penetration 15 mm (for rounded aggregate) & 20 mm(For Normal crushed aggreagete) of the …
اقرأ المزيدLicensed copy: MLA Cornwall Public , Cornwall Enquiry and Information Service, Version correct as of 20/09/2011 15:11, (c) BSI BRITISH STANDARD Testing aggregates — Part 111: Methods for determination of ten per cent fines value (TFV) BS 812-111: 1990 BS 812-111:1990 Licensed copy: MLA Cornwall Public , Cornwall Enquiry and …
اقرأ المزيدThe Impact Value of an aggregate is the percentage of fines produced when a sample of the aggregate is subjected to a standard amount of impact using a standardized hammer and cylindrical mould. A lower Impact Value indicates that the aggregate is more resistant to impact and is therefore considered to be of higher quality.
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