234R-06: Guide for the Use of Silica Fume in Concrete (Reapproved 2012) Topic: Silica Fume Format: PDF Unit: IN-LB: Inch-Pound Units or SI: International System of Units Author: ACI Committee 234 Published: 6/2006 Regular Price: $ 88.50 USD Member Price: $ 54.00 USD Become a Member More Info »