ITEM 9613-0001: Reclaimed Portland Cement Concrete (RPCC) AGGREGATE FOR MISCELLANEOUS DRAINAGE

I. DESCRIPTION – This work is the furnishing and placing of Reclaimed Portland Cement Concrete (RPCC) aggregate for miscellaneous drainage.

II. MATERIAL – Section 613.2 and as follows:

RPCC Aggregate.

·  Certify RPCC aggregates meet PennDOT’s Environmental Due Diligence requirements for Clean Fill.

·  Certify RPCC aggregates with less than 5 percent by mass (by weight) of foreign materials, as specified in Section 106.03.

·  Aggregate supplier must submit samples to MTD for petrographic examination for durability before use. Use freeze-thaw testing in accordance with ASTM D 5312 with the following modifications:

1.  Dry the samples obtained in accordance with Section 8 of ASTM D 5312 in at oven to constant mass at a temperature of 60 ± 3ºC (140 ± 5 ºF).

2.  Run a total of 50 freeze-thaw cycles on the samples.

3.  At the end of the test, the largest remaining portion of each sample shall be considered the passing portion, and the remaining smaller portions of each sample shall be considered the failing portions.

4.  The largest allowable loss for any individual sample, and the largest allowable average loss for all the samples, shall be 20.0% by mass.

·  Provide RPCC aggregates free of any exposed metal reinforcement or mesh.

·  Provide RPCC aggregates or blends of RPCC aggregates [minimum 50% RPCC] with conventional aggregates in proportions to meet gradation requirements, provided all RPCC aggregates or blends are retained on the No. 4 sieve.

·  Provide RPCC aggregates meeting the requirements of Section 703.2, Table B, Type C.

III. CONSTRUCTION – Section 613.3 and as follows:

·  Do not use in drainage applications with perforated drainage pipes, or where water moving through RPCC aggregates may enter the perforated pipe, unless directed by the District in an approved alternate design.

·  Do not use RPCC aggregates as drainage backfill for aluminum or galvanized steel pipes or other non-corrosion resistant incidental construction items.

·  Do not place RPCC materials in direct contact with perennial streams, 300 feet of Exceptional Value (EV) waters or a high quality (HQ) waters without prior approval from PADEP.

IV. MEASUREMENT AND PAYMENT – Cubic Meter (Cubic Yard)

9/30/2008