ConBlock MIC is designed and tested to stop the biogenic process of converting hydrogen sulfide gas into sulfuric acid, and is appropriate for protecting sewer pipe, sewer manholes, lift stations, sewer plants, wet wells, deep tunnel shafts, and septic tanks. ConBlock MIC can be added to cement based mortar and shotcrete used for manhole and pipe rehabilitation.
ConBlock MIC is an admixture for concrete that inhibits the colonization of the bacteria which causes microbially induced corrosion of concrete. Unlike sacrificial or leaching chemistries, the technology of ConBlock MIC controls microorganisms with a chemistry that remains a permanent part of the concrete structure. The active ingredient in ConBlock MIC – 3-(trihydroxysilyl) propyl dimethyl octadecyl ammonium chloride – relies on a charged ion and a unique spiked molecular structure to create an uninhabitable environment for the microorganisms. These molecular spikes are undetectable to human touch but overmatch single-cell organisms. In nature, most microbes carry the opposite ionic charge making them physically and irresistibly drawn into contact with ConBlock MIC, which punctures the cell walls of the offending microbes.
DO NOT SUBJECT CONBLOCK MIC TO FREEZING TEMPERATURES BEFORE USE.
| DESCRIPTION | ConBlock MIC |
|---|---|
| COLOR: | Clear |
| ODOR | None |
| DENSITY | 8.3 lbs./gal |
| pH | ~3.0 |
| SOLIDS CONTENT (%) | 11-14% |
| VOLATILE CONTENT | 0 g/l |
| SHELF LIFE | One year in unopened container |
| US EPA REGISTRATION NO: | 87907-1 |
ASTM C1904, Test Method A: Standard Test Methods for Determination of the Effects of Biogenic Acidification on Concrete Antimicrobial Additives and/or Concrete Products.
Treated with ConBlock MIC:
Initial pH 4.1 Final pH 4.3
Untreated Reference:
Initial pH 4.1 Final 2.06
ASTM D4783: Adapted for determination of antibacterial resistance of concrete to Thiobacillus species. Reduction of bacterial growth in 24 hours (pH~9.0)
Thiobacillus Novella – 99.9% reduction
Thiobacillus Intermedia – 99.9% reduction
Thiobacillus Thioparus – 99.9% reduction
ISO 22196: Measurement of antibacterial activity on plastics and other non-porous surfaces, modified for concrete. Inoculation of Thiobacillus Novella on concrete (pH~6.5-6.8)
Initial bacteria count on concrete at T0 hours = 111,000 CFU/cm2
Bacteria count on control concrete at T24 hours = 632,000 CFU/cm2
Bacteria count on ConBlock MIC treated concrete at T24 hours= 666 CFU/cm2
