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RAM300

RAM 300 Series

Rapid Analysis Machine for determining the cement content of fresh concrete

Introduction

The RAM ( Rapid Analysis Machine) is a floor mounted unit for determining the cement content of fresh concrete.
RAM has been used on hundreds of sites during the past twenty years and has proved to be a quick and accurate method of ensuring compliance with the minimum cement content requirements for the durability given in BS 8110 : 1985 Strucfural use of concrete and other specifications.
Description
The RAM operating cycle is automatically controlled by a solid state sequence timer after the machine has been primed with water and loaded with an 8kg sample of fresh concrete.
Water is pumped through the sample at a carefully controlled rate to wash the cement-sized particles up and over the top of the elutriation column. Three sampling channels take off a 10% sample,with the remaider going to waste.
The 10% sample passes through a 150micron vibrating sieve into the conditioning vessel where chemical agents are stirred into the suspension causing the cement particles to cling together and sink quickly to the bottom of the constant volume vessel.
After all the cement particles have settled, the excess water is removed by siphoning. On completion of the siphoning operation the constant volume vessel and contents are removed and weighed on a balance.
The cement content of the concrete sample is determined from a calibration graph.
The total time from loading of the RAM to reading off an accurate answer from the graph is less than 10 minutes.
Associated tests are available to determine the water/cement ratio and the quantities of cement replacement materials. P>Other tests are available to determine the water/cement ratio and the quantities of cement replacement materials such as flyash ( pfa ) or blast furnace slag ( slag ).


Specification:
Dimensions : 660 x 780 x 1500mm high
Weight : 145kg
Electrical Supply : 110v 50Hz 1ph or 110v 60Hz 1ph
Water requirement : 8- litres/test

RAM Agent Pack |(for 75 tests ) and RAM transformer (240 / 110v ) also available