Aggregate testing is performed to evaluate the properties of aggregates for asphalt and concrete mixes. Various testing methods are utilized to analyze characteristics including strength and angularity. Alterations in gradation, maximum size, unit weight and moisture can all affect the properties of concrete and asphalt.
view more20181115 · 0.3This standard specifies threquirements for the apparatus used for determining the aggregate impact value of coarse aggregate. The. aggregate impact value gives a relative measure ofthe resistance of an aggregate to sudden shock or impact, which in some aggregates differs from its resistance to a slow compressive load. The method of …
view more6 6 Figure 1 — Aggregate impact test machine Table 1 — Guide to minimum mass of test portions required to obtain a suitable mass of material to determine aggregate impact value Table 2 — Particulars of test sieves for testing other size fractions of aggregates Table 3 — Precision values for the determination of aggregate
view more2024329 · Significance and Use 5.1 Impact Value, as determined using the standard 4.5 kg (10 lbm) hammer, has direct application to design and construction of pavements and a general application to earthworks compaction control and evaluation of strength characteristics of a wide range of materials, such as soils, soil aggregates, stabilized soil …
view more2017811 · The apparatus for the test comprises an impact testing machine, cylindrical measure, tamping rod, IS sieves, physical balance and oven. a) Impact Testing Machine Hardness and lmpact Tests
view more20181114 · IS : 2386 (Part IV) - 1963 4.2 Apparatus - The apparatus shall consist of the following: a) An impact testing machine of the general form shown in Fig. 2 and complying with the following: 1) Total weight not more than 60 kg nor less than 45 kg.
view more6 · 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 construction is expressed by numerical index. Aggregates with lower crushing value show a lower ...
view more2024117 · The crushing value test gives a reasonable estimation of the aggregate resistance to crushing under the gradually applied compressive load, while the impact value test gives a comparative ...
view moreBased on over 30 years' experiences in design, production and service of crushing and s
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