Specifications - City of Montpelier, Vermont

Montpelier District HeatingCity of Montpelier, VT02520 – Portland Cement Concrete PavingIssue Date:September 28, 2012Page #:3 of 10B. Welded Steel Wire Fabric: ASTM A 185.1. Furnish in flat sheets, not rolls, unless otherwise acceptable to Engineer.C. Fiber Reinforcement: Synthetic fibers engineered and designed for secondaryreinforcement of concrete slabs, complying with ASTM C 1116, Type III.2.3 CONCRETE MATERIALSA. Portland Cement: AASHTO M 85, Type II1. Use one brand of cement throughout Project unless otherwise acceptable toArchitect.B. Fly Ash: AASHTO M 295.C. NormalWeight Aggregates: As follows. Provide aggregates from a single source.1. Aggregate for Concrete shall consist of clean, hard, crushed stone or washed crushedgravel, uniformly graded. The blending of crushed stone and crushed gravel in thestockpile shall not be permitted. It shall be free from deleterious material, pieces thatare structurally weak, and when proportioned in concrete shall not adversely affectthe structural integrity or durability of the concrete when subjected to freezing andthawing.2. Grading; The coarse aggregate shall meeting the following gradation requirements:SieveDesignationPercent by weightpassing1 inch 100¾ inch 90 to 1003/8 inch 20 to 55No. 4 0 to 10N0. 8 0 to 53. Percent Wear: When the coarse aggregate is composed of crushed stone or crushedgravel, the percent wear of the aggregate shall not be more than 35 percent whentested in accordance with AASHTO T 96.PORTLAND CEMENT CONCRETE PAVING 02520 3