Chloride Ion Permeability Test Results

AASHTO T-259 and ASTM C1202/AASHTO T-277 Chloride Ion (Salt) Permeability

AASHTO T-259 Test Results — Summary of Chloride Ion Penetration, % Chloride Ion

Test Condition 1.6mm to 13mm 13mm to 25 mm
AE, Untreated 0.158 0.029
AE, Treated 0.089 0.013
% Improvement 44% 55%

CreteDefender virtually eliminates the threat of salt damage and of chloride ion penetration, a leading cause of deterioration of reinforcement (rebar). In tests conducted by Bowser-Morner, a leading independent testing laboratory, chloride (salt) penetration in concrete treated with CreteDefender was cut by 55% in tests of CreteDefender performed in accordance with the AASHTO T-259 standards.  In this test, samples were subjected to 90 days of ponding of a 3% chloride solution.

ASTM C-1202/AASHTO T-277 Test Results — Summary of Chloride Ion Permeability, in Coulombs

Test Condition Air Entrained at 5.1% Non-Air Entrained
Untreated 6173 (high) 7806 (high)
Treated 2849 (moderate) 3089 (moderate)
% Improvement 54% 60%

Bowser-Morner also conducted tests in accordance with the ASTM C-1202/AASHTO T-277, which measure the changes in electrical current conducted through the concrete, to determine chloride ion concentration. In these tests, treating concrete with CreteDefender cut chloride (salt) permeability by 54% in air entrained concrete and 60% in non-air entrained concrete. These results indicate that corrosion of rebar and the resulting deterioration of the concrete will be delayed by years, if not eliminated entirely.