- 969 - SECTION 1078 -- RECYCLED ASP HALT SHINGLES FOR USE IN ASPHALTIC CONCRETE
1078.01 Description
1.Recycled Asphalt Shingles (RAS) may be used in Asphaltic Concrete. The maximum allowable (by weight) will be 10% on shoulders and 5% on mainline.
1078.02 Material Characteristics
1.All RAS shall consist of organic felt shingles or fiberglass shingles, obtained from a shingle manufacturing fa cility or tear offs. Scrap shingles shall not contain any objectionable materials (less than 1.5% by weight), including but not limited to: road tar, metal, glass, wood, plastic, brick, rubber, fabric, or any other material having similar characteristics. The RAS shall not contain harmful quantitie s of asbestos in accordance with guidelines provided by the Environmental Protection Agency and shall conform to all state and local regulations.
2.All RAS material shall be sized so that 100% (by weight) of the material passes through a 1/2 sieve, and at least 95% shall pass through a 3/8 inch sieve.
3.Before mix design approval, the following shall be submitted, along with materials and paper work for the mix design.
a.Certification by the processor of the shingle scrap, as to the shingle scraps content and source. Certif ication forms are available from the Department.
b.A 5 lb. sample of the shingle scrap material for review.
1078.03 Construction Requirements
1.RAS shall be stockpiled separate, from other salvaged material. Blending of scrap material in a stockpile with other salvage material is prohibited.
2.Scrap shingles shall be introduced into the hot mix asphalt, at the asphalt mixing plant, at the same point where Recycled Asphalt Pavement (RAP) is introduced.
3.Asphaltic Concrete containing RAS, regardless of RAP content, shall have a minimum of 55% virgin PG Binder for tear off shingles, and a minimum of 40% virgin PG Binder when using manufacturer waste shingles.
1078.04 Basis of Payment
1.The RAS material will be eligible for the RAP Incentive at a rate of 50% as specified elsewhere in the specifications.
1078.04 Recycled Asphalt Shingles for Use in Asphaltic Concrete
- 970 - RECYCLED ASPHALT SHINGLES (RAS) CERTIFICATION SHEET Project ______________________________________________ Processor of Shingle Scrap: ____________________________ Name ______________________________________________ Address __________________________________________________ Contact __________________________________________________ Phone ______________________________________________ We the undersigned, certify that t he shingle scrap to be used on this project, was supplied directly from the processor listed below. We also certify that the material supplied cons isted of only organic and/or fiberglass shingles and contains no harmful qua ntity of asbestos or other hazardous material in accordance with Environmental Protection Agency and all state and local regulations. _________________________________________________________ Name of Contractor Shingle Scrap was Supplied to _________________________________________________________ Address _________________________________________________________ Authorized Representative of Processor of Shingle Material Date - 971 - SECTION 1079 -- SLAG CEMENT FOR USE IN CONCRETE AND MORTARS
1079.01 Description
1.Slag Cement shall meet the requirements of ASTM C 989, Grade 100 or 120.
1079.02 Material Characteristics
1.All slag cement will be acceptance tested by the Department. This includes production plant samples and field samples.
1079.03 Procedures
1.Slag cement shall be protect ed, stored, handled, and sampled in the same manner as specified for Po rtland cement in Sections 1002 and 1004 and the Department’s Materials Sampling Guide.
2.Each shipment of slag cement s ent to the project or ready mix plant shall be accompanied with a Certificat e of Compliance from the supplier or manufacturing plant. The certificate mu st include the following information:
a.Name of the supplier or manufacture. b. Source of the slag cement. c. Consignee and desti nation of the shipment.
d.Project number to be used on, if available, and date shipped. e. Railroad car number or truck identification number.
f.Weight of the shipment.
g.Certified test number repres enting the material being shipped.
h.An unrepeated order number or other identification number so that each shipment is separately identified.
3.The following signed certificati on statement, or similar wording, must also be included on the form: “This is to certify that this shipment of slag cement meets the specification requirements of the Nebraska Departmen t of Transportation for slag cement, Grade 100 or 120”. Signed ____________________________________________ For _______________________________________________ (Supplier)
4.Two copies of the Certificate or Compliance shall be sent with the shipment to the ready mix plant or project. The concrete producer will retain one copy of the Certificate of Compli ance for their records and one will be collected by the Engineer if necessary.
5.Slag cement may be used as soon as it is received; provided it is accompanied by the proper Certificate of Compliance and the results of previous tests indicate a satisfactory product.
1079.04 Acceptance Requirements
1.a. Approved slag cement will be on the Department’s Approved Products List.
Source: Nebraska Standard Specifications for Highway Construction, 2017 Edition. Pages 1003–1004 of 1,048.