R O C K G R O U T

KEY TO BATCHING PROGRAMMES

THE AMOUNTS OF CEMENT AND WATER TO MIX

By A. C. HOULSBY, Grouting Engineer (Retired)Sydney, Australia

To get grout of a required water:cement ratio it is necessary to take account of the grout already in lines and machinery, unless they are empty, of course. This is the key to programmes which calculate the requisite quantities to mix. To use it you indicate the units you are working in and how cement is supplied:

TRADITIONAL units ( i.e.: pounds, cubic feet):-

METRIC units ( i.e: kg, litres):-



A SPECIAL NOTE:-

When attempting to do calculations on some of these batching programmes a WARNING sign might appear. This is because some browsers block the running of JavaScript and ActiveX. This is a security measure. However you can be assured that these programmes contain no security threats and you can safely click on the warning sign and "allow blocked content".



Revised April 2011 by A.C.Houlsby