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Reviewed in the United States on September 12, 2024
I used 3 pounds of fiber in this concrete table and no cracks. It's been 5 years and I can't even see any small cracks.
Islander50
Reviewed in Canada on December 20, 2023
I had no problem with clumping like mentioned by people who probably didn’t mix this product properly. My slab came out amazing I see no fibres sticking through and I used double the recommended weight. Highly recommend this product for any slab pours/caping.
JJBunChu
Reviewed in the United States on October 26, 2023
This product significantly reduced plastic cracking on stucco base coat. It is difficult to get it mixed properly. I had the best luck pre-mixing it in a jug of water. It expands significantly when added to water. I measured it using a gram scale for individual bags of cement - 8.4gm per 80lb bag.
Weekend Woodbutcher
Reviewed in the United States on July 7, 2022
Putting in a new concrete floor in my garage...price difference at the store for bag of concrete with and without fiberglass reinforcement is about $2 each. A bag of these concrete fibers costs $15 or so and contains enough for sixty 60 pound bags of concrete. That's a huge savings and the fibers are way easier to deal with than mesh or rebar (neither is "required" for unheated garage floors).I used a scale to measure out 1/3 oz of fibers for each bag of concrete...that means each 1lb bag of fibers reinforced 48 bags of concrete. Did 12 at a time, put them in small plastic cups and just grabbed one cup at a time as each bag got mixed. Added water to my running cement mixer, added the fibers, then added the concrete. The fibers mixed evenly and don't show in the finished product.
Peter
Reviewed in Canada on July 19, 2021
I use the fibers to add a dimensional strength to my outdoor concrete countertop in addition to a wire mesh. The fibers separated easy and mixed very well. I used an electric drum mixer. However I did not follow the suggested usage of one bag per cubic yard but instead used the entire bag content for 7 cubic feet of concrete. None of the fibers are sticking out.Only time can tell if the fibers do the job but for now the entire slab dried and cured without cracks.
Turtle77
Reviewed in the United States on June 11, 2021
I probably used too much and also probably did not break it up enough--the strands of fiberglass arrived bunched up and it is fiddly work pulling it apart and them distributing it in the concrete mix. I was dealing with fast setting stuff and got in a hurry.My next project is using standard concrete so I will take my time fiddling with this stuff before the water goes in the mix--I think I will add the fiberglass when I am dry mixing on this one. If it seems to have done the job I will edit this and again with the passage of time shows it to have strengthened the patch: a sidewalk raised by tree roots.Promises, promises...
Kenny Sellers
Reviewed in the United States on April 1, 2021
I make small cement items such as alligators and stones. The stone molds that I use simulate natural stone and parts of the mold are thin. I am concerned with the possibility of the stone edges breaking off. I don't worry anymore when using these fibers. I have had great results and stress tests on the stones have proven the usefulness of this additive. Keep in mind...a little goes a long way. Use sparingly for best results.
Martin Gagnon
Reviewed in Canada on January 25, 2019
when using these you need to mix very well as it tend to stick together more, if you mix by hand it's a lot more difficult
Steve
Reviewed in the United States on July 14, 2017
Glass fibers. I'm using these to reinforce plaster of paris and it's working very well. It takes very little. I used 10% by weight the first time and I couldn't even mix the stuff completely because I couldn't penetrate the solid "woven" mat of fibers that formed as I mixed it. My only complaint is that they come in little bunches of fibers, about 1/8" wide. I prefer individual strands; so I break up the groups before use.
D. Coral
Reviewed in the United States on October 4, 2016
This Bon product is actually a bag of Owens Corning Anti-Crak HD (High Dispersion).According to the Owens Corning product sheet, "These fibres are designed to be used with normal concrete mixes at very low addition levels – typically 0.6kg/m3 (1lb/yd3) of concrete. Added directly to the mixer or ready mix truck, they disperse instantly within the concrete. This complete uniform dispersion ensures a three dimensional reinforcement throughout the matrix and thus an effective suppression of cracking during the plastic shrinkage period. The large number of filaments gives a very small distance between fibres whilst the high aspect ratio gives maximum effect in the setting period."Technical details:Product form: Monofilament as a result of dispersal of fibres bundles on contact with moistureNumbers of fibres: >100 million/lbAspect Ratio: 857:1Specific surface area: 518 ft2/lbTypical addition rate: 1 lb/yd3 of concrete
AmirReview
Reviewed in Canada on April 13, 2016
Very good product to add to cement as you are mixing it. Adds and extra reinforcement factor to the concrete above the rebars use. Still use rebar but adding this will make sure it solid no cracks. Did a walkway with last year and it solid no cracks.I do want to add one thing on the mixing process; do not use a drill wand mixer as it will just pick up all the fiber around the drill end. We mixed everything in a large wheel barrel with shovels. Or you could use a cement mixer machine.
wjlCan
Reviewed in Canada on August 11, 2015
I purchased this product 32-500 and also a bag of the 32-504. The 32-504 clumped and was a pain to work with. This product, the 32-500 distributed much better but still required effort to get it well distributed throughout the dry mix before adding liquid. I would buy this product 32-500 again but not the 32-504. Product arrived fats with no issues.
S. Rea
Reviewed in the United States on June 16, 2011
This will help keep your sidewalk projects from cracking.Mix them up well.I usually put two 60 lb sacks of redi-mix in my small mixer with .57 oz of fibers.I put the fibers into the mixer between the 2 bags of Redi-mix.Occasionally a small glop of fibers (like 1/8 ") will appear on surface of concrete while finishing.Just knock it down under the cream.I put 10 yards on concrete in my backyard with these fibers and you don't see the fibers anywhere.Why would I do 10 yards of cement with a mixer?I am retired. I have plenty of time but not money.Great Product.
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