Articles tagged with: chemical grouting

Sep09

Chemical Grouting is for Life-Long Learners

Chris Hamilton - September 11, 2014 - Views 2616

Since becoming part of the Avanti family, I have met with dozens of grouting contractors and municipal crews with years of experience rehabbing underground structures. Most feel confident in their quality of work, and with balancing efficiency, effectiveness, and safety. As someone who served as an infrastructure restoration contractor for a decade, I know from personal experience how difficult it is to make procedure adjustments, modify processes, and implement subtle improvements.

Sep02

CIPP Lining and Protective Coatings Need Infiltration-Free Environments

- September 04, 2014 - Views 2697

The original trenchless technology, chemical grout, is also complimentary to all other technologies. What do we mean be that? CIPP lining and protective coating are important technologies to sustaining our underground infrastructure. To realize maximum value of these structural repairs, active leaks must be stopped first. View this 3-minute, Cole Publishing interview with Don Rigby on how chemical grout stops leaks and provides an infiltration-free environment in manholes, mainlines, and laterals so structural repairs can realize their full life-expectancy.

Aug28

Direct from Municipal Contractor: Manhole Rehab with AV-100 Outsmarts Water Intrusion

- August 28, 2014 - Views 3126

Customer call backs can be painful. And for one contracting company in Florida their call-backs were just that. It started seven years ago when they chose to align themselves with Brand X (who shall remain nameless) because of a lower price point. After high volumes of call-backs, they moved to Brand Y and then Brand Z, but continued to have unacceptable call-backs. Let’s be real – the manhole rehab business is tricky. In fact, the contractor had to call upon a competing resource to fix problems, and sure enough, this contractor was aligned with Brand A – A for Avanti.

Jul26

Ultrafine Cement Grout Excels at Colorado School of Mines Field Day

Britt Babcock - February 25, 2013 - Views 6344

Ultrafine Cement Grout Excels at Colorado School of Mines Field Day

It happens only once a year. Colorado School of Mines (Golden, CO) hosts a week long short-course on grouting. It’s attended by Who’s Who in the geotechnical grouting industry.

On the afternoon of June 19, 2013, the school hosted a Field Day and participants were able to view a live demonstration of the permeability of different grouts through Sand Column Testing. I’m pleased to announce, US Grout’s Ultrafine Cement excelled over other cement grouts by reaching the top of the sand column (60 inches) in just 80 seconds. No other cement grout came close.

Jul29

Preserving the Underground Infrastructure at Miami-Dade

- Views 4644

Preserving the Underground Infrastructure at Miami-Dade

Communities large and small face a delicate balance of improving their underground sanitary sewer collection system and reducing flow to their treatment plant while being good stewards of the rate-payer and protecting quality of life. The intrusion of groundwater and soil files are sabotaging system efficiencies causing the plant to treat twice the volume, increasing sanitary sewer overflows, and polluting our clean water systems.

Jul05

Preparation--Key Critical for Chemical Grout Repair Projects

Avanti Staff - February 25, 2013 - Views 3736

Planning for repair work is more than setting a date. Just like a good paint job is all about the preparation, so is chemical grouting. With work often in confined spaces, after hours, and sometimes requiring equipment shut down, it is vital to have everything ready to facilitate starting on time so you can finish as planned.

Jun03

How to Choose a Grout for Sealing Mainlines and Laterals

- February 25, 2013 - Views 3398

Below are some questions to consider when choosing a grout for sealing mainlines and laterals--before, after, or independent of lining:

  1. Cost: Cost should only be one factor. What is more important is that you are using the appropriate product for the job and the grout is applied correctly--in accordance with the 2012 NASSCO recommendation is a good start.
  2. Cost vs. Cure Time: Grouts have different cure times. Be sure to check tech data sheets to determine how much control over cure time you will have in the field. Better yet, you can do a more thorough investigation by performing your own tests. The more catalyst you need to reach the desired goal, the more money you'll spend on product.
Jun03

Joint Failure Not Always Obvious--Test Every Joint

- February 25, 2013 - Views 3165

I visited a job site a few weeks ago and talked with the grouting operator. I found three things very cool:

  1. It was nice to visit a grout truck that was kept clean and orderly. This was a municipality that only has one crew responsible for each grout truck, so they treat it like their own.
  2. They air tested every joint. There is no point in grouting only the visible leaking joints and ignoring the ones that are not noticeable. The joints must pass an air test or should otherwise be grouted. If not, once you grout the leaking joints, the groundwater simply migrates to the next joint and enters there.
<<  1 2 [34 5  >>