AGGREGATE IMPACT TESTING MACHINE:

AS PER IS: 2386 (Part-IV) 9377.

Introduction:

For determining the aggregate impact value of coarse aggregate.

General Description and Specifications:

The instrument consists of a circular base with two vertical guides. Consists  of base weight between 20-30 kg with  a  lower  surface  of  not  less  than 30 cms and support  columns  to from a rigid frame work around the quick  release trigger mechanism to ensure an effective free  fall of the hammer during test.

The free fall can be adjusted through 380 ± 5.0 mm.  The hammer is provided   with   a   locking   arrangement.  

A  metal hammer of weight 13.75 ±0.25 kg, the lower end of in cylindrical shape, 100 mm in diameter and 5 cm long with  a  2  mm  chamfer  at  the  lower  edge  and case hardened.

Complete with a cylindrical cup, 102 mm dia X 50  mm  depth, one cylindrical metal measure 75 mm dia X 50 mm deep and a tamping rod of circular cross section 10 mm in diameter and  230  mm  long, rounded at one end.

Supplied with automatic blow counter.