Water Permeability (DIN 1048)

After 28 days of wet curing, water permeability testing was performed on four cylinders (4”x8”), control and All Bloc™. Each cylinder was placed in an apparatus that applied 72.5 psi of water pressure to the bottom of each cylinder for a period of 72 hours. 

All Bloc™ greatly outperformed the control samples in all 4 water permeability tests.  Control cylinders experienced nearly total penetration (7 3/16” average), while All Bloc™ cylinders showed minimal surface water penetration (no water penetration was visible in 2 cylinders).  All Bloc™ is competitive with any permeability reducing admixture for hydrostatic conditions (PRAH) in the concrete industry. 

Compressive Strength

In lab testing*, All Bloc™ had a positive effect on the overall compressive strength of the concrete, when compared to control samples. Ultimately,

All Bloc™ increased the compressive strength of the concrete cylinders (4”x8”) at 7-days, 28-days, and 56-days. Plasticizer properties affected by All Bloc™   indicate an increase of Air Entrainment by about 3% to 3.5%.  The cost of adding Air to the concrete mixture is therefore eliminated. 

In a 7-day, 28-day, and 56-day compressive strength test, All Bloc™ outperformed the control cylinders by over 20%.

Rapid Chloride Ion Penetration (-64%) 

All Bloc™ was tested against a typical 3000 psi concrete using the “Standard Test Method for Electrical Indication of Concrete’s Ability to Resist Chloride Ion Penetration” (ASTM C 1202). The Control samples averaged 6,750 Coulombs penetration, while All Bloc™ samples averaged only 2,400 Coulombs, a 64% reduction in chloride ion penetration. Low penetration indicates that All Bloc™ admixture produces concrete that would perform very well in corrosive environments and inhibit rust. 

Freeze-Thaw (323 cycles) 

The “Standard Test Method for Resistance to Rapid Freezing and Thawing” (ASTM C 666) was conducted with a temperature range of 44 F to -4 F (slight widening of standard 40 F to 0 F). The Control samples (3000 psi mix) failed at an average number of 59 Cycles representing 40% Loss of Dynamic Modulus Frequency (Hz). With All Bloc™™ admixture, the concrete samples never failed and the testing was terminated after 323 Cycles with concrete integrity maintained. 

Durability Factor (637%) 

The Durability Factor was calculated from the Freeze-Thaw testing data and the average improvement for concrete with All Bloc™ admixture was 637% versus standard concrete. The Durability Factor indicates a substantial potential for increased service life. Harsh environment applications subject to concrete repairs and/or replacement would benefit greatly from a more durable concrete installation. The initial costs for All Bloc™ admixture are dwarfed by the excessive cost and time for repair/replacement in the future.