Lifetime
product protection
from concrete corrosion
& stain-causing bacteria
Untreated
Treated
Lifetime
concrete protection from
bacterial stains & corrosion
MarMac’s Concrete Admixture AMX 5500 is a Microban®-powered, liquid antimicrobial concrete additive that inhibits damaging bacterial growth in treated concrete. AMX 5500 is especially beneficial in sanitary sewer and other wet/humid environments where harmful microbes often thrive. This product may be used in any new concrete structure requiring permanent product protection from bacterial growth, Hydrogen Sulfide (H2S), and Microbial-Induced Corrosion (or MIC).
- Stained
- Corroded
- Mildew
- Clean
- Minimal Pitting
- Unblemished
H2S in Sewer Systems
What is Hydrogen Sulfide? H2S is a colorless gas known for its potent “rotten egg” odor. In municipal sewer systems, it is often a byproduct of biological processes that occur when specific environmental conditions are met.
Good water quality environments rely on dissolved oxygen to support aerobic organisms. When oxygen levels in sewer water drop significantly (a condition often amplified by high temperatures, decaying organic matter, or seasonal weather shifts), the environment becomes anaerobic.
So, where does H2S gas come into play? In these low-oxygen conditions, sulfate-reducing bacteria called thiobacillus begin to thrive. These bacteria typically live in the slimy film (biofilm) on sewer walls. They consume sulfates present in the wastewater and, through their metabolic process, convert them into H2S gas.
What’s wrong with H2S? Beyond its unpleasant smell and health risks, H2S is highly corrosive. When the gas interacts with moisture on the surfaces of sewer pipes, it leads to the rapid degradation of concrete we refer to as Microbial-Induced Corrosion, which is one of the primary causes of structural failure in sewer infrastructure worldwide.
Benefits of Treated Concrete
- Fights damaging bacterial growth & subsequent stains
- Hinders growth of mold & mildew
- Makes for longer-lasting, higher quality structures
- Reduces maintenance: Helps keep concrete cleaner
- Microban®-powered antimicrobial inhibits corrosion (M.I.C.1)*
- Preserves strength: Over 40% stronger concrete vs untreated*
- Microban Antimicrobial Technology™ lasts the lifetime of the structure
- Ultra-low VOC formula
1 Microbial-Induced Corrosion (of Concrete); * Based on standard lab test method ASTM C1904-20.
Visually undetectable
MarMac’s Concrete Admixture has no adverse side effects. There is no change in the cure time, finishability, and coloration/shade when compared to traditional “mix water” concrete. Visually, the only noticeable difference is long-term, fresher, cleaner concrete. The final, cured AMX 5500-treated concrete retains all the same physical specifications with the bonus of antimicrobial properties and preserved strength*.
Saves time & money
Our Microban®-powered concrete admixture protects finishes and lowers maintenance. Fewer required cleanings reduces labor and the need to hire professional pressure washing services or renting equipment, and minimizes water & chemical usage. The results… less mess, less time, and lower cost.
Combats corrosion
Common Applications
Commercial
| • Sewer / Stormwater Pipe | • Manholes |
| • Box Culverts | • Wastewater Treatment Facilities |
| • Bridge Spans & Pylons | • Sanitary Sewer Systems |
| • Pump / Lift Stations | • Septic Tanks |
| • Digesters & Clarifiers | • Headworks |
Residential
| • Driveways | • Sidewalks |
| • Patios | • Pool Decks |
| • Garage Floors | • Shop Floors |
24/7 protection by Microban®
The Microban® Antimicrobial Technology™ incorporated into our Concrete Admixture AMX 5500 continuously fights the growth of bacteria, fungi, molds, and mildew by disrupting and rupturing their cell walls. This protection becomes a permanent part of the structure that will not wash away, break down, or fade over time, ensuring long-lasting, cleaner concrete that resists corrosion-causing microbes.
Made in the USA compliance
• Build America, Buy America Act (BABA)
• Buy America Act of 1982 (BA)
• American Recovery & Reinvestment Act (ARRA)
• Buy American Act of 1933 (BAA)
The usual handling and safety precautions should be observed when using AMX 5500. These include the measures described in federal, state, and local health and safety regulations and requirements.
The workplace should have thorough ventilation. Handle in accordance with good industrial hygiene and safety practices. Protective eyewear, disposable coveralls, aprons, or other protective clothing, along with appropriate nitrile or other protective chemical resistant gloves is recommended. Wash hands thoroughly before eating, drinking, or smoking after the use of AMX 5500.
AMX 5500 is a premixed, water based, ready for use product to be added while mixing concrete for various infrastructures. Mix AMX 5500 thoroughly before use if it has been sitting for an extended period of time. Do not dilute AMX 5500. It does not need it.
The total volume of AMX 5500 used in a particular application is to be considered “mix water” and must be considered when calculating the total water to concrete (w/c) ratio.
Approximately 122-128 fl oz (0.95-1.00 gallon) is enough AMX 5500 to adequately treat one cubic yard (1 yd3) of concrete in most applications. Due to variation in cement response, it is important that set time and slump retention of the proposed mix be thoroughly tested and evaluated in the light of job requirements.
Add the required quantity of AMX 5500 to your concrete while continuing to tumble the concrete mixing. Be sure to mix the concrete an additional 5-10 minutes so that AMX 5500 is thoroughly distributed throughout the concrete mix.
AMX 5500 was rigorously tested against the ASTM C1904 – 20: Standard Test Methods for Determination of the Effects of Biogenic Acidification on Concrete Antimicrobial Additives and/or Concrete Products.
The tested percent strength reduction for the treated admixture is much lower than that of the control specimen. The ‘5-alpha- admixtureʼ showed only an 11% decrease in strength. “This strongly indicates that the quaternary silane additive is extremely effective at reducing the strength loss of the cement due to MIC”.
This product has been tested by an outside independent microbiological laboratory for its efficacy against the harmful type of destructive micro-organisms particularly attacking concrete infrastructures.
The test protocol used was that of the modified ISO 22196:2011 (JIS Z2801) – ‘Antibacterial efficacy testing construction materials.ʼ The test was performed in triplicate against an exposure time of 24 hours. The test organism used was Serratia marcescens.
AMX 5500 exhibited a microbial (bacterial) ‘killʼ of 99.999% (or 5 log reduction) of the bacteria after 24 hours of exposure, clearly demonstrating superlative performance as an antimicrobial admixture for cementitious infrastructures.
AMX 5500 is packaged in a distinctive 5-gallon pail (gray) with a white top and an ‘anti-gluckʼ spout for safe and easy use. Each 5-gallon pail has a net weight of 37.85 lbs (17.17 kg).
When stored in the original and unopened container in a well-ventilated area between 41-100 °F (5-28 °C), AMX 5500 has an approximate shelf life of 18 months from the date of manufacture. Keep away from excessive heat and open flame.
Protect from freezing or near freezing conditions. Should the admixture be left or stored in such conditions be sure that it has not layered or has become exceedingly cloudy. Heat the solution in its container in an ambient temperature of around 65-75 °F for approximately 20-30 minutes stirring occasionally. This should remedy the situation and be able to be used.
- The usual handling and safety precautions should be observed when using AMX 5500. These include the measures described in federal, state, and local health and safety regulations and requirements.
- The workplace should have thorough ventilation.
- Handle in accordance with good industrial hygiene and safety practices.
- Protective eyewear, disposable coveralls, aprons, or other protective clothing, along with appropriate
nitrile or other protective chemical resistant gloves is recommended. - Wash hands thoroughly before eating, drinking, or smoking after the use of AMX 5500.
| PROPERTY | VALUE |
|---|---|
| Appearance | Semi-Translucent, light blue liquid |
| pH | 5.0 – 7.0 |
| Odor | Slight amine odor |
| Odor threshold | No data |
| Melting / freezing point | ~ 32°F |
| Flash point | No data |
| Flammability | Non-flammable |
| Vapor pressure | No data |
| Relative density | ~ 1.005 – 1.009 g/cm3 |
| Solubility in water | All components miscible |
| Auto-ignition temperature | Will not ignite |
| Decomposition temperature | Will not decompose |
| Explosive properties | Will not explode |
| Oxidizing properties | Will not oxidize |
| Specific gravity | ~ 1.005 – 1.009 |
| CAUTION: Prior to use, please read the Manufacturer Warranty & Disclaimer. | |
AVAILABILITY
5 Gallon Pails
55 Gallon Drums
250 Gallon Totes*
*Special request
APPLICATIONS
Sanitary Sewer Systems
Stormwater Systems
Reinforced Concrete Pipe (RCP)
Manholes
Box Culverts
Wastewater Treatment Facilities
Pump Stations
Lift Stations
Headworks
Digesters
Clarifiers
Wet Wells
Holding Tanks
Composting Facilities
Driveways & Sidewalks
Patios
Pool Decks
Garage & Shop Floors
Acidic Soil Environments
CONCRETE
Microban® is a registered trademark of Microban Products Company. Microban® technology is not designed to protect users of this product or others from disease-causing microorganisms. Antimicrobial action is limited to product surface.
