Application Stories

The Role of Chemical Grouting (.pdf)

Controlling water infiltration through chemical grouting continues to make news, because it continues to work! As the oldest and most proven method of all water infiltration repair and control options, the success of chemical grouting is attested to in the articles below.

"When 'Old School' is the Right School"
Rehabilitation Technology (January, 2013)

The American Bottom, or Bottoms, is a Southern Illinois area of 175-square miles in the fl ood plain of the Mississippi River, protected from fl ooding by a system of levees and canals.

“Tough Job: Reaching Out”
Cleaner Magazine (June, 2008)

While controlling mainline inflow and infiltration, the Rockland (Mass.) Sewer Department faced another challenge: groundwater migrating into the sewers through 6-inch vitrified clay laterals.

“Trenchless Rehab From the Engineer’s Perspective”
Trenchless Technology (October, 2006)

From my perspective, sewer rehabilitation programs tend to fall into two main categories.The first — and by far the most common — is driven by the need to reduce peak infiltration-and-inflow (I&I) flows in the collection and conveyance systems and at the head works of the treatment plant during and following significant rain storms.

“Driving Down I/I”
Municipal Sewer & Water (November, 2006)

For years, the wastewater utility in Graettinger, Iowa, dealt with a major wetweather problem — clear water flowing into the sewer system. With a high water table, the city’s inflow had been running at about five times the acceptable level.

Typically, residents have to drill down only 34 feet to hit water. This high water and resulting inflow created wastewater treatment problems. The city had tried over the years to reduce infiltration and inflow (I/I). In the late 1960s, the utility did some grouting on its Main Street line, mainly focusing on active leaks.

“City Uses Pro-Active Grout Program to Reduce Volume, Treatment Costs”
Underground Construction (September, 2006)

Sewer system management in Newtown, PA, credits the use of a new, comprehensive, pro-active chemical grouting rehabilitation program by minimizing infi ltration from pipe and joint failure. The new program, replacing on-demand grouting, keyed dramatic reductions in wastewater volume and consequent treatment costs, in spite of signifi cant, ongoing system expansion.