Evaluation and Modifications of the AASHTO Procedures for Flexural Strength of Prestressed Concrete Flanged Sections Eray Baran University of Minnesota Civil Engineering Department Minneapolis, MN [email protected] Arturo E. Schultz University of Minnesota Civil Engineering Department Minneapolis, MN
The contract will specify AASHTO Test Designation T22 "Compressive Strength of Cylindrical Concrete Specimens" as the means of determining compressive strength. The laboratory performing T22 will be required to be accredited by AMRL in that test.
Comparison of Compressive Strengths Using 4x8 vs. 6x12 Cylinders for Prestress Concrete Description: Recently, prestress/precast companies are requesting to use smaller cylinder specimens, in particular 4 by 8-in. cylinders, for concrete compressive strength tests. The Missouri Department of Transportation (MoDOT) currently allows
Surface Resistivity Test Evaluation as an Indicator of the Chloride Permeability of Concrete FHWA Publication No.: FHWA-HRT-13-024 FHWA Contact: Ahmad Ardani, HRDI-10, (202) 493-3422, [email protected] Introduction Many agencies have adopted the standard tests for electrical indication of concrete’s ability to resist chloride ion penetration (AASHTO