Xypex Bio-San C500 is a uniquely designed admixture for integral, long-term protection of concrete in harsh sewage conditions with levels of H2S that cause microbial induced corrosion (MIC). Bio-San C500 combines potent antimicrobial protection along with the unique crystalline technology of the Xypex Admix C-Series.
Bio-San contains bio-active mineral solids that become permanently fixed within the cement matrix impairing bio-film formation thus inhibiting the growth of acid causing sewer bacteria such as Thiobacillus due to concentrations of H2S. The unique Xypex Crystalline Technology creates a permanent structure throughout the pores and capillary tracts providing waterproofing and enhanced chemical protection including acid and sulphate resistance. Bio-San C500 prevents microbial induced corrosion, stops infiltration/exfiltration of water, and provides acid and sulphate resistance, significantly extending the service life of concrete sewage collection systems and waste water infrastructure.
Advantages of Xypex
- Inhibits microbial induced corrosion
- Resists extreme hydrostatic pressure
- Resistant to aggressive chemicals (acids and sulphates)
- Can seal static hairline cracks up to 0.5 mm
- Becomes a permanent, integral part of the substrate
and cannot be punctured, damaged or lose adhesion
- Does not contain any VOCs
- Less costly to apply than most other methods
- Added to the concrete at the time of batching and therefore
not subject to weather and surface moisture constraints
- Manholes / Sewer Pipes
- Pump and Lift Stations
- Head Works
- Septic Tanks
- Industrial Structures
Xypex Bio-San C500 is packaged in 50 lb. (22.7 kg) pails. Contact the manufacturer for availability of customsized packaging to meet the requirements of your specific project.
1% by weight of total cementitious content.
Xypex products must be stored dry at a minimum temperature of 45ºF (7ºC). Shelf life is one year when stored under proper conditions.
Bio-San C500 Specific Details
Xypex recommended procedures for waterproofing concrete tie holes in new construction where Xypex Bio-San C500 concrete has been used to protect against MICC attack.
Xypex recommended procedure for crack repairs performed on the sewage side of concrete elements that contain Xypex Bio-San C500.
Xypex recommended procedure for repair of standard, small or medium-large sized deficiencies in Xypex Bio-San C500 treated concrete.
Sanofi Pasteur Toronto Water & Wastewater Management Facility
Consulting with the Xypex team, the engineers and contractors determined that using a Xypex system would be the ideal solution to protect and waterproof the new concrete structures.
To achieve this, Xypex Admix C500 and Xypex Bio-San C500 replaced the traditional coating specified for this job.
Both Xypex Admix C-500 and Bio-San C500 are added to the concrete mix at the time of batching, eliminating the need to apply a coating at a later date.
These Xypex products react with cement and the byproducts of cement hydration to fill the capillaries in the internal structure of the concrete, creating a non-soluble crystalline matrix to waterproof the concrete and protect it from chemical attack throughout its useful life.
By selecting Xypex Bio-San C500, the general contractor, Miron Construction Company Inc, saved time and money as this product provides comprehensive waterproofing and MIC resistance without any extra drying, curing or installation time.
With the Xypex Bio-San integrated into the concrete, the concrete is protected for the structure’s service life.
Largo Wastewater Treatment Plant
The concrete structures found in most wastewater treatment plants are subject to some of the harshest environments imaginable, including abrasion erosion, chemical attack, chloride ion-induced corrosion, freeze-thaw conditions, and microbiologically induced corrosion (MIC). Large cracks were power-chiseled to create a space to accept a dry-pack of Megamix II with Bio-San, which was then covered with a top coat of Megamix II with Bio-San. The Xypex repair mortar can be applied via sprayer or trowel at a thickness of 3/8 to 2 inches. It must be applied to a surface in saturated surface dry (SSD) condition.
Sanitation Wet Well Manholes Resurfacing
Xypex Bio-San C500 was specified for the waterproofing and microbial induced corrosion protection of two pump station wet wells. However, there were a number of precast units that were inadvertently dosed with Xypex Admix C-500 in place of the Bio-San C500. To ensure the protection from MIC, Xypex Megamix II with Xypex Bio-San C500 was specified for the waterproofing and microbial induced corrosion protection of two pump station wet wells. However, there were a number of precast units that were inadvertently dosed with Xypex Admix C-500 in place of the Bio-San C500. To ensure the protection from MIC, Xypex Megamix II with Bio-San was subsequently applied to the interior surface of these precast units at a 3/4” thickness. A total of 120 - 55 lbs bags of Megamix II + Bio-San were utilized. For those units that were dosed with Bio-San C500, a total of 150 lbs of the Bio-San C500 additive was incorporated into the concrete for the wet well lids, thus providing the requisite waterproofing and MIC protection.
Rinker Material made 5 manholes (48”) and one manhole (84”) with Xypex Bio-San C500 at a 1% percent dosage rate to provide protection from microbial induced corrosion. These manholes will be incorporated into a factory’s wastewater treatment system of a manufacturer of corn syrup, soybeans, oil and bio-diesel. The Megamix II with Bio-San was also utilized for filling mortar joints of the precast manhole segments. Bio-San C500 was dosed also in the concrete bench located at the bottom of the manhole.
Projects Using This Product
River Islands Sewage Pump Station
The River Island Sewage Pump Station faced two major challenges: as a sewage pump station the concrete required protection from microbial induced corrosion (MIC); and 9 m (30 ft) of the 12 m (40 ft) deep structure would be immersed in the surrounding water table. Xypex Bio-San C500 admixture was chosen by the City of Lathrop as an alternative to the specified system.
South Lathrop Commons Center Sewage Pump Station
In order to protect the concrete structure from microbial induced corrosion and to achieve water tightness, Xypex Bio-San C500 was added to the concrete mix at the Jensen Precast’s plant at the time of batching. The Bio-San C500 contains antimicrobial crystalline technology which both kills the acid-producing microbes which proliferate in sewage structures as well as providing watertight, chemically resistant concrete with crack-healing properties.
Chatham Park WWTP
Due to the potentially high levels of H2S in the Bioreactor McKim & Creed, the engineers of record specified the use of a high build acid resistant coating to protect the concrete. Bowen Engineering proposed to the engineers Xypex Bio-San C500 as an alternate to this coating because it contains Xypex’s antimicrobial crystalline technology.
Fairchance Sewer Line Extension
Liners or coatings would normally be used to perform this function. As these are expensive and time consuming to install, the engineers decided to specify the inclusion of Xypex Bio-San C500 admixture in the pre-cast concrete.
Sonic Sanitary Lift Station & Manholes – Arizona WWTP
The Arizona Lift Station project involved a large cast-in-place wet well and drop/ discharge precast manholes. Xypex Bio-San C500 was incorporated into all cast-in-place concrete and grout in direct or indirect contact with wastewater.
American Furniture Manholes
The design team was looking for corrosion protection for the manholes and chose Xypex Bio-San C500 over the alternate antimicrobial admixture. Xypex Bio-San C500 was chosen because it provides the precast sewage elements with protection against microbial induced corrosion and aggressive chemicals, as well as waterproofing and crack healing properties.