2015-159 - Laserfiche WebLink

Home Browse Search

ADDENDUM #1 1. When construction includes the paving of adjacent shoulders (<5 feet wide), the layer thickness for the upper pavement layer and shoulder shall be the same and paved in a single pass, unless otherwise called for in the Contract Documents. 2. For overbuild layers, use the minimum and maximum layer thicknesses as specified above unless called for differently in the Contract Documents. On variable thickness overbuild layers, the minimum allowable thickness may be reduced by 1/2 inch, and the maximum allowable thickness may be increased by 1/2 inch, unless called for differently in the Contract Documents. 334-1.6 Weight of Mixture: The weight of the mixture shall be determined as provided in 320-2.2 of the Florida Department of Transportation (FDOT) specifications. 334-2 Materials. 334-2.1 Superpave Asphalt Binder: Unless specified elsewhere in the Contract or in 334- 2.3.3, use a PG 67-22 asphalt binder from the FDOT's Qualified Products List (QPL). If the Contract calls for an alternative binder, meet the requirements of FDOT Specifications Section 336 or 916, as appropriate. 334-2.2 Aggregate: Use aggregate capable of producing a quality pavement. For Category 2 and 3 projects, require the aggregate supplier to certify that the material meets FDOT requirements. For Type FC mixes, use an aggregate blend that consists of crushed granite, crushed Oolitic limestone, other crushed materials (as approved by FDOT for friction courses per Rule 14- 103.005, Florida Administrative Code), or a combination of the above. Crushed limestone from the Oolitic formation may be used if it contains a minimum of 12% silica material as determined by FDOT Test Method FM 5-510 and FDOT grants approval of the source prior to its use. As an exception, mixes that contain a minimum of 60% crushed granite may either contain: 1) up to 40% fine aggregate from other sources or 2) a combination of up to 20% RAP and the remaining fine aggregate from other sources. A list of aggregates approved for use in friction courses may be available on the FDOT's website. The URL for obtaining this information, if available. is: www.dot.state.fl.us/statematerialsoffice/quality/programs/qualitycontrolhnaterialslistings/sources/fn ctioncourse.pdf. 334-2.3 Reclaimed Asphalt Pavement (RAP) Material: 334-2.3.1 General requirements: RAP may be used as a component of the asphalt mixture, if approved by the Engineer. Usage of RAP is subject to the following requirements: 1. Limit the amount of RAP material used in the mix to a maximum of 50 percent by weight of total aggregate. 2. Provide stockpiled RAP material that is reasonably consistent in characteristics and contains no aggregate particles which are soft or conglomerates of fines. 3. Provide RAP material having a minimum average asphalt content of 4.0 percent by weight of total mix. The Engineer may sample the stockpile to verify that this requirement is met. 4. Use a grizzly or grid over the RAP cold bin, in-line roller crusher, screen, or other suitable means to prevent oversized RAP material from showing up in the completed recycle mixture. If oversized RAP material appears in the completed recycle mix, take the appropriate corrective action immediately. If the appropriate corrective actions are not immediately taken, stop plant operations 01025-36 Technical Specifications F \Public Works\ENGINEERING DIVISION PROJECTS\1205-Vero Lake Estates Swk-87th St_101 st Ave to CR510 ILAP)\AdmimWDDENDUMS\ADDENDUM 1\Technical Specifications Addendum #1 doc