1. Unless otherwise specified by the producer on the technical data sheet, cure all test specimens in covered molds in the laboratory. 2. Specimen dimensions are as follows: 3 × 6" cylinders for neat materials; 4 × 8" cylinders for extended materials. 3. Modified as follows: Specimen dimensions are as follows: 1 × 1 × 11.25" prisms for neat materials; 3 × 3 × 11.25" prisms for extended materials. Demold and determine initial length reading at 6 ± 1/4 hr. Store specimens in a drying room; at no point should specimens be placed in water after they are demolded. Take readings at 1, 4, 7, 14, and 28 days. 4. There are no property requirements for this test. MTD will test for this property and report it on the MPL for material selection purposes. 5. Standard substrate concrete used in test procedure must have the following properties: Max Water-Cementitious Material Ratio: 0.45 Max Nominal Aggregate Size: 3/4" Compressive Strength at 28 days: 5,000 6,000 psi Modified as follows: Preparation of slant face surface of substrate concrete includes the following: sand blast the surface to expose aggregate surface to a uniform depth and maintain at saturated surface dry (SSD) condition before casting repair material. Use one of the following methods when casting repair material onto the substrate surface. If required by the manufacturer, apply the bonding system as directed. If a bonding system is not required, maintain the substrate at SSD and apply a scrub coat of repair material to the substrate surface. If directed by the manufacturer, cast the repair material directly onto the prepared surface. Specimen ends may be ground plane within 0.002 in before testing.
