Articles tagged with: chemical grouting

Jul29

Preserving the Underground Infrastructure at Miami-Dade

- Views 4821

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 3901

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 3569

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 3340

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.
May31

Miami-Dade Attacks Infiltration and Scores Major Win for the Community

- February 25, 2013 - Views 3314

I recently visited with Rod Lovett and Juan Bedoya with the Miami-Dade Water and Sewer Department. It was great to see them and meet some of their crew. Last year alone, Miami-Dade invested in nine new grout trucks. After 25+ years of grouting, it is encouraging to see one of the largest municipalities in the country so committed to stopping water infiltration. 

May17

Lift Sunken Concrete Slabs with a Structural Foam

Britt Babcock - February 25, 2013 - Views 7654

Many facility managers are unaware of the liabilities associated with trip hazards in public walkways, the excess wear and tear on forklifts from uneven industrial floors, or that SLAB LIFTING is possible with minimal interruption. Traditional mud jacking methods require drilling large holes in the slab to inject a cement slurry with a long cure time adding excess weight to unstable soils. And "jacking" does not address the cause of soil failure. Avanti's AV-600 SureLift™ reduces groundwater intrusion and erosion factors, fills voids, and provides a fast cure within 1/10" of desired grade.

Mar05

Act Responsibly. Think Safety First.

Avanti Staff - February 25, 2013 - Views 3709

The military may ask you to lay your life on the line at times. A number of us here at Avanti are prior military. But risking your life waterproofing in a confined space is just silly and avoidable. Did you know that in a low oxygen environment, people will act normally at first, but will then abruptly feel dizzy and black out in a matter of seconds?

Feb25

Selecting the Right Product Saves Time, Money, and Headaches

- February 25, 2013 - Views 8502

Chemical grouts are used before, during or after construction in a variety of applications including groundwater control, soil stabilization, void filling, encapsulation and structural lifting of concrete slabs. Because there are many kinds of chemical grouts it is important to review and match the needs of the project with the specific characteristics of the grout. For example, some resins are designed to permeate soil, rock or superfine cracks and cure with no expansion. Others are designed to fill large voids and expand up to twenty times their original volume. Some are shipped to the job site as a liquid which requires less mixing before injection, or in a granular form in order to maximize space on the jobsite and reduce shipping costs.

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