3145Mineral Filler

3145.1SCOPE

Provide mineral filler as a soil or mixture component.

3145.2REQUIREMENTS

A Composition Provide a mineral filler of Carbonate dust, Portland cement, hydrated lime, crushed rock screenings*, fly ash, or rotary kiln dust. * Crushed rock needs to have a stability and durability equivalent to those of the comparable mixture containing one of the other acceptable filler Materials and be free of clay and shale. B Gradation The mineral filler will be finer than a No. 4 Sieve and contain less than 25 percent of the Material passing a No. 200 Sieve. The portion passing the No. 200 Sieve will meet the following gradationǁ. Percent finer than 0.020 millimeters……………35 – 100 Percent finer than 0.005 millimeters……………10 – 40 Percent finer than 0.001 millimeters…………….1 – 25 ǁ Does not apply to Portland cement or hydrated lime C Condition Mineral filler which is to be added directly to the dried Aggregate for the bituminous mixture will be thoroughly dry and free from lumps consisting of Aggregates of fine particles. Crushed rock screenings used as mineral filler will be processed and handled in such a manner to prevent segregation and dried by passing through a dryer.

3145.3SAMPLING AND TESTING

A Sample according to the Bituminous Manual B Fineness B.1 Fine Aggregate Sieve Analysis ..................................... Laboratory Manual Method 1203 B.2 Particle Size Analysis of Soil ........................................ Laboratory Manual Method 1302