Site work and paving for a road / highway in Winchester, Massachusetts. Completed plans call for site work for a road / highway; and for paving for a road / highway.

Sealed bids are requested for crack sealing of roads. The sealed bids must be clearly marked with the bidders name and address, Department of Public Works, description of bid item(s), date, time and place of opening, and bid number. Bids submitted after the specified date and time will not be accepted. The Town reserves the right to accept or reject any or all bids, in whole or in part, and to make the award in the best interest of the Town. Notification of intent to award the bid will be made within thirty days of the bid opening date. Copies of the invitation for bid can be obtained electronically by contacting the Department of Public Works office. Questions regarding the bid, call: Bob LaBossiere Director, Public Works (781) 721-7100 materials necessary to perform all operations in connection with the cleaning and sealing of construction and random cracks in bituminous concrete pavements, including vegetation removal and sterilization of cracks, where necessary. 2. MATERIAL Crack sealant shall be a modified asphalt-fiber compound designed especially for improving strength and performance of the parent asphalt sealant. (a) The asphalt binder shall consist of a blend of neat asphalt binder, chemically modified crumb rubber (CMCR), and a polymer package, all of which meet the following specifications: The binder will meet PG 64-28E requirements after modification including: o PG grade requirements of AASHTO M320 o Requirements of AASHTO TP70/MP19 Modification, at a minimum, shall consist of 7% crumb rubber, and the maximum particle size for the recycled tire rubber shall be 80 mesh (#80 sieve) The asphalt supplier shall provide testing for both the neat and modified asphalt binders See below for typical modified test results for 64-28E with crumb rubber: DSR ORIGINAL o kPa >1.00 @ 64 C. Fail temp = 76+ C DSR RTFO o kPa >2.20 @ 64C. Fail temp = 76+ C MSCR o JNR (MSCR unit of measure): 3.2 E <0.5% @ 64 C o R3200 (Average % Recovery): >70% DSR PAV o kPa <6000 @ 64C BBR o Stiffness <300 @ -18 C. M-Value >0.300 @ -18C (b) Fiber reinforcing materials shall be short-length polyester fibers having the following properties: Length* 0.25 in. +- 0.02 in. Elongation at Break; ASTM D2256-90 35% +- 3% Melting Point; ASTM D3418-82 >475 degrees F (246 degrees C) Crimps/Inch; ASTM D3937-90 None Cross Section Round Denier; ASTM D1577-90 4.5 Nominal dpf Tensile Strength; ASTM D2256-90 >70,000 psi Diameter 0.0008 in. ** Specific Gravity; ASTM D792-91 1.32 to 1.40 * At temperatures ranging from ambient to maximum finished product mix temperature ** Subject to Normal Variations The modified asphalt-fiber compound shall be mixed at a rate of 8% fiber weight to weight of asphalt cement. This compound having the same chemical base provides compatibility and exhibits excellent bond strengths. The fiber functions to re-distribute high stress and strain concentrations that are imposed on the sealant by thermal sources, traffic loading, etc.