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This Part of BS 812 describes a method for the determination of the aggregate crushing value (ACV) which gives a relative measure of the resistance of an aggregate to crushing under a …
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Code: (BS-812) 4.1 Purpose The aim of this method is to determine the 1) Impact Value of road aggregates. 2) To assess the suitability of aggregates for use in different types of road pavements. 3) To assess the resistance of an aggregate to mechanical degradation.
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BS 812-112 1990.pdf - Free download as PDF File (.pdf), Text File (.txt) or read online for free. Scribd is the world's largest social reading and publishing site.
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BS/BS EN . BS 812 Part 2 Clause 5.4 ... Elongation index of coarse aggregate BS 812 Part 109 ... Methods for determination of aggregate crushing value (ACV) BS 812 Part 111 >Testing aggregates Part 111: Methods for Determination of Ten Per …
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Figure 1 — Aggregate impact test machine BS 812-112:1990 6 Preparation of test portions and specimens 6.1 Test portions Reduce the laboratory sample by the procedures described in clause 6 of BS 812-102:1989 to produce a test portion of sufficient mass to produce three test specimens of 14 mm to 10 mm size fraction.
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; Specifies methods for the determination of the aggregate impact value (AIV) which gives a relative measure of the resistance of an aggregate to sudden shock or impact.
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This lab report summarizes an experiment to determine the aggregate impact value (AIV) of a sample. The AIV test subjects aggregate samples to standard impacts from a dropping weight to assess their resistance to shock or impact. The procedure involves compacting 350g of aggregate between 10-14mm in size into a cup, subjecting it to 15 blows, then sieving to determine how …
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Code: (BS-812) 4.1 Purpose The aim of this method is to determine the 1) Impact Value of road aggregates. 2) To assess the suitability of aggregates for use in different types of road pavements. 3) To assess the resistance of an …
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As an illustration, according to ASTM C131, the maximum allowable impact value for a base course aggregate utilized in highway construction stands at 50%. In a parallel manner, BS 812: Part 112 dictates that the maximum allowable impact …
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Work on testing procedures for aggregates is being carried out in Europe under the auspices of CEN/TC 154, Aggregates. The methods described in this Part of BS 812 are included in the programme of work of CEN/TC 154 and will be superseded by European Standards which will be published in due course.
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For the purposes of this Part of BS 812 the definitions given in BS 812-101 and BS 812-102 apply. A sample of aggregate in the size range 10.0 mm to 14.0 mm is subjected to five cycles …
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This Part of BS 812 describes methods for the determination of the aggregate impact value (AIV) which gives a relative measure of the resistance of an aggregate to sudden shock or impact. Two procedures are described, one in …
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This Part of BS 812 describes methods for the determination of the aggregate impact value (AIV) which gives a relative measure of the resistance of an aggregate to sudden shock or impact. Two procedures are described, one in which the aggregate is tested in a dry condition, and the other in a soaked condition.
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This Part of BS 812 has been prepared under the direction of the Cement, Gypsum, Aggregate and Quarry Products Standards Policy Committee, and is a revision of clause 8 of BS 812-3:1975, which is withdrawn. It forms part of a general revision of the 1975 edition of BS 812. As each of the tests, or collection of
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It forms part of a revision of clause 6 of BS 812 : Part 3 : 1975 which is withdrawn. This Part describes methods for the determination of the aggregate impact value (AIV) which gives a relative measure of the resistance of an aggregate to sudden shock or impact.
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checking the mechanical properties (Aggregate Impact Value, Aggregate Crushing Value, and Ten Percent Fines Value), and shape characteristics (Flakiness Index, Elongation Index and Angularity Number) of aggregates used in roadway construction. The test procedures are described as per BS: 812:1975 (PART 1, 2, 3) standards.
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; Specifies methods for the determination of the aggregate impact value (AIV) which gives a relative measure of the resistance of an aggregate to sudden shock or impact.
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Scope: This Part of BS 812 describes methods for the determination of the aggregate impact value (AIV) which gives a relative measure of the resistance of an aggregate to sudden shock or impact. Principle A test specimen is compacted, in a standardized manner, into an open steel cup.
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As an illustration, according to ASTM C131, the maximum allowable impact value for a base course aggregate utilized in highway construction stands at 50%. In a parallel manner, BS 812: Part 112 dictates that the maximum allowable impact value for a 20 mm aggregate employed in road surfacing is 25%.
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This Part of BS 812 has been prepared under the direction of the Cement, Gypsum, Aggregate and Quarry Products Standards Policy Committee, and is a revision of clause 8 of BS 812-3:1975, which is withdrawn. It forms part of a general revision of the 1975 edition of BS 812.
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Work on testing procedures for aggregates is being carried out in Europe under the auspices of CEN/TC 154, Aggregates. The methods described in this Part of BS 812 are included in the …
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The test report shall contain the following additional information: a) sample identification and sample description; b) the condition in which the aggregate was tested, i.e. dry or soaked condition; c) the aggregate impact value (AIV) of the dry aggregate; d) the aggregate impact value of the aggregate in a soaked condition and the number of ...
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This Part describes methods for the determination of the aggregate impact value (AIV) which gives a relative measure of the resistance of an aggregate to sudden shock or impact. Two procedures are described, one in which the aggregate is tested in a dry condition, and the other in a soaked condition.
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This document describes a test method for determining the aggregate impact value (AIV) of aggregates, which provides a measure of their resistance to sudden shock or impact. The test involves compacting aggregate samples in a steel cup and subjecting them to 15 blows from a hammer. The crushed material is then sieved and the percentage passing a 2.36mm sieve is …
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This Part describes methods for the determination of the aggregate impact value (AIV) which gives a relative measure of the resistance of an aggregate to sudden shock or impact. Two …
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NOTE 3 When an aggregate impact value (AIV) as determined by the procedure given in BS 812-112 is available, the force required (in kW) for the first ten per cent fines test can be estimated by means of the following equation more …
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Water Absorption of Aggregate Agg. Impact Value BS 812-112:1990 Testing Aggregates. Methods for Determination of Aggregate Impact Value (AIV) Bulk Density BS 812-2:1995 M#6 Testing Aggregates. Methods of Determination of Density Clay ASTM C 142-97 Standard Test Method for Clay Lump & Friable Particles in Aggregates
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812: 102), (ii) Water Absorption Test (BS 812-102: 1989), (iii) Flakiness Index Test (clause 5 of BS 812102: 1989); - (iv) Elongation Index Test (clause 5 of BS 812-102: 1989); v) (Aggregate Crushing Value (ACV) Test (clause 5 of BS 812102: 1989); - (vi) Aggregate Impact Value (AIV) Test (clause 5 of BS 812-102: 1989) and (vii) Aggregate ...
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Scope: This Part of BS 812 describes methods for the determination of the aggregate impact value (AIV) which gives a relative measure of the resistance of an aggregate to sudden shock or impact. Principle A test specimen is …
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For the BS 812-112 method, a small portion of 14–10-mm-sized coarse aggregate particles is confined in a steel pot and subjected to 15 blows by a small hammer in a standardised test rig, after which the ' aggregate impact value' (AIV) is determined from the fine material generated, expressed as a percentage of the original weight of the ...
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This Part of BS 812 describes a method for the determination of the aggregate crushing value (ACV) which gives a relative measure of the resistance of an aggregate to crushing under a gradually applied compressive load. The method is applicable to aggregates passing a 14.0 mm test sieve and retained on a 10.0 mm test sieve.
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BS 812-101, Guide to sampling and testing aggregates. BS 812-102, Methods of sampling. BS 812-110, Methods for determination of aggregate crushing value (ACV). BS 812-112, Methods for determination of aggregate impact value (AIV). BS 1610, Materials testing machines and force verification equipment.
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The test report shall contain the following additional information: a) sample identification and sample description; b) the condition in which the aggregate was tested, i.e. dry or soaked condition; c) the aggregate impact value (AIV) of the …
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For the purposes of this Part of BS 812 the definitions given in BS 812-101 and BS 812-102 apply. A sample of aggregate in the size range 10.0 mm to 14.0 mm is subjected to five cycles of: immersion in a saturated solution of magnesium sulphate; followed by …
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