Xypex was used to repair leaking cracks on a bridge deck that averages a load of about
100,000 vehicles per day. Xypex Concentrate was sprayed on the underneath side of the
structural deck and allowed to chemically diffuse for ten months. (For an Adobe Reader
formatted report on this project, click here.)
Core samples taken from selected cracked areas were subject to pressurized water. A
graphic in the report illustrates that half of the Xypex cores leaked slightly at the
beginning of the test, but within sixteen hours they were completely healed and
exhibited NO measurable leakage. This demonstrates the healing ability of Xypex’s
crystalline chemistry.
Lithium nitrate soaking fails to retard ASR damage
In the field, flooding of ASR-damaged concrete with lithium nitrate solution to halt
the ravages of alkali-silica reactivity is largely ineffective, according to a 3 year
study of ASR afflicted pavement in North Dakota. The limitations of lithium nitrate
soaking to impede the spread of existing ASR were substantiated by Christopher Taun,
Ph.D., P.E. Associate professor of civil engineering and his team at the University of
Nebraska-Lincoln; and the U.S. Army Corps of Engineers.
Recognized as the greatest cause of deterioration of U.S. highway concrete structures
and Pavements, ASR occurs in the interaction between certain reactive siliceous
aggregates and hydroxyl ions associated with alkalis from the Portland cement paste and
external sources (water).
XYPEX MITIGATES ASR IN CONCRETE BY ELIMINATION OF MOSITURE! Xypex, surface applied
or introduced as an admixture reacts to the byproducts of cement hydration to cause
“Waterproofing by Crystallization” The pores and capillary tracts of concrete become
permanently sealed against water from every direction even against strong hydrostatic
pressure.
Solving “unsolvable” waterproofing problems with Xypex
Many Engineers and Architects are now specifying a “new school” approach in solving
“old school” waterproofing problems. XYPEX ADMIXTURE makes concrete 100% waterproof. The
XYPEX WATERTIGHT SYSTEM also includes a “fool proof” joint detail that we warranty as part
of this system. A description of this detail is attached to this e-mail. It involves dry
packing a reglet knock out with XYPEX CONCENTRATE and adding a “Deneef Swell Seal” bead.
Xypex Concentrate offers a high concentration of chemicals that react with water to form
a crystalline front. The “Swell Sealant” is a flexible hydrophilic expansive gasket. This
joint coupled with Xypex admixture makes a Watertight System used in below grade, Water Tank
and Parking Structure design.
You no longer need to rely on membrane systems that are built to fail. With Xypex,
concrete has long term durability because XYPEX is:
Breathable
Self-healing
Chemical
Freeze-thaw
Corrosion
Resistant
Waterproof
Warranted
Permanent
XYPEX is the world leader in providing waterproof, chemical resistant concrete.
Our XYPEX C series ADMIXTURE is often referenced by competitors with an additional
statement like, “We are like Xypex, but less expensive.”
XYPEX STANDS ALONE in Waterproofing by Crystallization. Xypex is not an Ammonia
Stearate, Sodium Silicate, or Talc. Xypex is tested to above 175 PSI on 2000 PSI
cores with no measurable leakage (US Army CRD-C-48-73). We have more testing, data
and projects in place than all competitors combined.
When considering a waterproof admixture, ask yourself:
Is it truly “crytalline”?
Is it organic or inorganic?
Is it non-soluable?
Is test data available?
Is there a 5 plus year successful usage in this state?