Laserfiche WebLink
r <br /> r <br /> r <br /> PREVENTIVE MAINTENANCE - MICRO-SURFACING (BDE) <br /> Effective: January 1, 2009 <br /> Revised: April 1, 2012 <br /> Description. This work shall consist of micro-surfacing hot-mix asphalt (HMA) surfaces. <br /> Materials. Materials shall be according to the following. <br /> r (a) Micro-Surfacing. Materials shall be according to the following Articles/Sections of the <br /> Standard Specifications. <br /> Item Article/Section <br /> (1) Mineral Filler (Note 1) ........................................................................................... 1001 <br /> (2) Water .................................................................................................................... 1002 <br /> (3) Coarse Aggregate (Note 2) .............................................................................1004.03 <br /> (4) Bituminous Material (Prime Coat) ................................................................... 1032.06 <br /> (5) Latex-Modified Emulsified Asphalt (Note 3) <br /> (6) Additives (Note 4) <br /> Note 1. The mineral filler shall be Type 1 portland cement. <br /> Note 2. The coarse aggregate material shall be selected from the table in Article <br /> 1004.03(a) of the Standard Specifications based upon the friction aggregate mixture <br /> specified. The quality of the aggregate shall be Class B and the gradation shall be <br /> as shown in the table below. <br /> Sieve Size Type II % Passing Type III % Passing ' <br /> 3/8 in. 9.5 mm 100 100 <br /> #4 (4.75 mm) 95± 5 80 ± 10 <br /> #8 (2.36 mm) 77± 13 57 ± 13 <br /> #16 (1.18 mm) 57 ± 13 39 ± 11 <br /> #30 (600 Nm) 35 ± 10 26 ±8 <br /> #50 (330 Nm) 19±6 18 ±7 <br /> #100 (150 Nm) 15± 6 12 ± 6 <br /> #200 (75 Nm) 10± 5 10 ± 5 <br /> 1/ Rut filling mixes shall be constructed using a Type III gradation. All surface <br /> mixes shall be constructed using a Type II gradation. <br /> To assure the material is totally crushed, 100 percent of the parent aggregate shall <br /> be larger than the largest stone in the gradation to be used. <br /> ' The blending, alternate use, and /or substitutions of aggregates from different <br /> sources for use in this work will not be permitted without the approval of the <br /> r <br /> 1 <br />