Fibers for Permeability Riverhead NY

Permeability is defined as the property that governs the rate of fluid flow through a porous solid (Ref. 1). The porosity of cement paste determines the permeability of concrete (Ref. 2). The water-cement ratio is one of the largest contributors to porosity development, but, on the whole, porosity is determined through chemical interaction.

Local Companies

Southold Hardware Corp
(631) 779-2676
54795 Route 25
Southold, NY
LOWE'S OF MEDFORD, NY
631 207-4541
2796 ROUTE 112 MEDFORD, NY, 11763
Medford, NY
ONE SOURCE TOOL SUPPLY
(631) 283-8700
341 County Road 39A Ste 1 Southampton, NY, 11968
Southampton, NY
Mjn True Value
(631) 821-3567
691 Route 25a
Miller Place, NY
Kmart 9423 / Cross Merch
(631) 537-6449
Bldg 82 Montauk Highway
Bridgehampton, NY
Shelter Island Hardware
(631) 749-0097
4 Grand Avenue
Shelter Island Heights, NY
Lowe's
(631) 207-4541
2796 Route 112
Medford, NY
Lowe's of Patchogue
631-687-6220
825 Mantauk Highway East Patchogue, NY, 11772
East Patchogue, NY
Ace Hardware
(631) 929-5095
6281 Rte 25 A
Wading River, NY
The Home Depot
(631)286-4665
10 Gateway Blvd
Patchogue, NY

Source: THE CONCRETE PRODUCER/CONCRETE JOURNAL MAGAZINE
Publication date: March 1, 2001

Question: A customer has asked us to include fibers in the mix design for a water retention tank. The idea is that the fibers will reduce the permeability of the concrete. Is that true?

Answer: There are really two responses here. The first defines permeability, and the second determines how fibers affect permeability.

Permeability is defined as the property that governs the rate of fluid flow through a porous solid (Ref. 1). The porosity of cement paste determines the permeability of concrete (Ref. 2). The water-cement ratio is one of the largest contributors to porosity development, but, on the whole, porosity is determined through chemical interaction. Since the fibers themselves are chemically inert and have no interaction with cementitious reactions, it is not possible for the fibers to decrease the permeability of concrete.

However, this is not to say that fluid will not flow through the concrete at a different rate when fibers are present. In a simple sense, fibers are small, flexible aggregates. As such, they create a small matrix of aggregates within the larger concrete matrix. If moisture flows through concrete via the cement paste, then the fibers create a more tortuous path. The more tortuous the path, the longer it takes the water takes to traverse it.

Click here to read full article from The Concrete Producer

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