aggregates crushing value test in ghana

Apr 28 2016 · One of the test in which concrete material can fail is due to crushing under compressive stress Aggregate crushing test is standardized by IS 2386 partIV and used to verify the crushing strength of aggregates The aggregates should be oven dried which can passes through 125mm and retained on 10mm sieve

Calculation of Aggregate Crushing Value The crushing value of aggregates is measured in the ratio between the crushed aggregates obtained from the IS sieve 236mm and the weight of the dried aggregate sample At least three samples should be tested from the same batch and average value to get accurate results The crushing value of aggregate W2W1 x 100 Lab Report

For the Aggregate crushing value test an aggregate sample passing through 125 mm IS sieve and retained on 10mm IS sieve is selected and dried to a temperature of 105 ºC to 110 ºC then cooled to room temperature To fill the cylindrical measure mould about 65 kg of a

The ‘ aggregate crushing value test gives a relative measure of the resistance of an aggregate to crushing under a gradually applied compressive load Aggregate crushing value is defined as the percentage by weight of the crushed or finer material obtained when the test aggregates are subjected to a specified load under standardized conditions and the strength of the aggregate used in road

The apparatus of the aggregate crushing value test as per IS 2386 Part IV – 1963 consists of 1 A 15cm diameter open ended steel cylinder with plunger and base plate of the general form and dimensions as shown in Fig 1 2 A straight metal tamping rod

Procedure for crushing strength of aggregate Before testing the aggregate should be in surface dry can achieve the dry condition of aggregate by placing aggregates in an oven for 4 hours at 100degree Celcius The aggregates passing through 125mm and retained on 10mm IS sieves are selected for finding aggregate crushing strength

May 05 2010 · Aggregate crushing value test provides strength of aggregates for resistance against crushing under loads and is used for roads and pavements construction Aggregate crushing value test on coarse aggregates gives a relative measure of the resistance of an aggregate crushing under gradually applied compressive load

Calculate Aggregate Crushing Value The ratio of the weight of fines formed to the total sample weight in each test shall be expressed as a percentage the result being recorded to the first decimal place Aggregate Crushing Value W B W A × 100 Where W A is weight of surfacedry sample

The aggregate crushing value ACV provides relative measure of the resistance of an aggregate to crushing under a gradually applied compressive load Two versions available 150 standard and 75 mm dia The apparatus comprehend cylinder plunger base plate tamping rod and measure

Sep 12 2015 · 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 See Fig1