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Laboratory Apparatus

We offer the best product range of Marshall Stability Test Apparatus, Pipe Friction Apparatus and Unconfined Compression Test Apparatus.

Marshall Stability Test Apparatus

  • Integral type proving Ring capacity 3000Kgs
  • A dial gauge 0.01 x 25mm.
Originally developed by Bruce Marshall, a highway engineer in U.S.A later on standardized by ASTM. Generally the test is applicable to hot mix designs using bitumen and aggregates upto a maximum size of 25mm. In this method, the resistance to plastic deformation of cylindrical specimen of bituminous mixture is measured when the same is loaded at periphery at 5cm per min. This test procedure is used in designing and evaluating bituminous paving mixes. The test procedure is extensively used in routine test programmers for paving jobs. There are two major features of the Marshall method of designing mixes namely. a) densityvoids analysis, b) Stability-flow tests. The Marshall stability of mix is defined as a maximum load carried by a 0 compacted specimen at a standard test temperature of 60 C. The flow value is deformation the Marshall test specimen at under goes during the loading upto the maximum load, in 0.25 mm units. In this test and attempt is made to determine optimum binder content for the type of aggregate mix and traffic intensity.
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Pipe Friction Apparatus

Two G.I. Pipe lines of size 20 & 25mm with tapings at 2m having a set of individual gate valves & distribution chamber with isolating cocks to facilitate individual experiment on piping system
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Unconfined Compression Test Apparatus

Unconfined Compression Testing Apparatus can be used either in a Laboratory or in field. This apparatus is as per the design of Building Research Station, U.K.Consists of a spring operated load frame with arrangements for loading 38mm x 76mm samples, one set of four load springs of stiffness 0.2kg, o.4kg, 0.8kg and 1.6kgmm, a calibrated mask and one set of 50 charts, in a metal carrying case. Spares & Accessories: Charts set of 50 Calibrated mask. Spring set comprising one each of stiffness 2Nmm, 4Nmm, 8Nmm and 16Nmm Coning toll for 38mm sample (female) Coning toll for 38 mm sample (male) Tripod stand wooden, for using the instrument in field.
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