I-99 HPC Permeability Testing

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Presentation transcript:

I-99 HPC Permeability Testing Presented By Geoffrey Kurgan 17 May 2002

Current Testing AASHTO T 277/ASTM C 1202 14 mixture designs 2 material sources Fly Ash, GGBFS, PC, Silica Fume and multiple ternary mixes Through 56- day test for all combinations Normal curing temperature and conditions Samples fabricated for one year tests

Current Testing- Test Setups Two test setups allow numerous tests to run each day Comparable results on either machine

Future Test Plans AASHTO T 277/ASTM C1202 AASHTO T 259 Accelerated Curing AASHTO T 259 Modified Rapid Migration Test (RMT) Pressure permeability

Test Plan

Test Plan- AASHTO T 277 Rapid chloride permeability test Continue fabrication and testing of additional samples Accelerated curing for 28- day test 7 day MC 23C + 21 day MC 38C 7, 28, 56, 90, 180, and 365 day tests

Test Plan- AASHTO T 259 Salt ponding test 3% NaCl solution ponded on top surface for 90 day intervals 0.5” slices taken at progressive depths to determine chloride concentration Run for 180 days

Test Plan- Rapid Migration Test Based on test developed in Sweden and modified at the University of Toronto Silver nitrate solution used to highlight penetration depth Seven measurements recorded for average Chalmers Technical University

Test Plan- Pressure Permeability Currently under construction Chloride profile grinding Depth penetration measurement using silver nitrate Darcy’s Law utilized to yield permeability coefficient