Fiberglass in concrete?
Fiberglass in concrete?
(OP)
We recently had the coping poured for an in-ground pool and were suprised to find that the contractor had added PPG short strand fiberglass to the concrete. The strands are visible throughout the concrete and some can be pulled off the surface. We now have two concerns:
1)Is it safe? We have young children and are concerned about it injuring their feet or coming loose and being in the pool water itself.
2) Are the strands supposed to be this visible? I've never seen concrete with fibers in it before and our contractor didn't mention that he was using them or that they'd be visible.
Thanks in advance.
Tim
1)Is it safe? We have young children and are concerned about it injuring their feet or coming loose and being in the pool water itself.
2) Are the strands supposed to be this visible? I've never seen concrete with fibers in it before and our contractor didn't mention that he was using them or that they'd be visible.
Thanks in advance.
Tim





RE: Fiberglass in concrete?
They are not inherently dangerous, but huge amounts, if inhaled, could be.
There are many types of fibers that are used ranging from steel, fiberglass to various "plastic" compounds. If fiberglass was used is should be an alkalai-resistant glass, since common fiberglass will deteriorate over time in concrete.
In some cases, I have seen the protruding fibers singed off with a butane torch to accelerate the natural process.
Dick
RE: Fiberglass in concrete?
RE: Fiberglass in concrete?
Dik
RE: Fiberglass in concrete?
I've seen some disastrous outcomes with FRC slabs-at-grade - with the fibres "balling" and the concrete mix becoming unworkable -- and would never specify it again.
FYI, see these industry links regarding glass fibre reinforced concrete:
- International Glassfibre Reinforced Concrete Association, http://www.grca.org.uk/
- National Precast Concrete Association Australia, http://www.npcaa.com.au/html/RESOURCES-GRC.html
RE: Fiberglass in concrete?
RE: Fiberglass in concrete?
RE: Fiberglass in concrete?
RE: Fiberglass in concrete?