Raw materials are ground to powder and blended. or 2. Raw materials are ground, mixed with water to form slurry, and blended. Source PCA, 2003. 9 3. Burning changes raw mix chemically into cement clinker. Source PCA, 2003. 10 Source Mindess, Young, and Darwin, 2004. 11 Source Mindess, Young, Darwin, 2004. 12 3. Burning changes raw mix ...