Fibers for Permeability Middletown 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

Lowe's
(845) 572-2400
3924 Summerville Way
Chester, NY
Monroe WHS/Matamoras
504 9th Street Matamoras, PA, 18336
Matamoras, PA
McAfee Hardware
973-827-0594
16 Old Rudetown Road
Vernon, NJ
Otisville True Value Hardware
(845) 386-3343
Po Box 866 10 Wallace Street
Otisville, NY
Kmart 9462 / Cross Merch
(845) 561-2334
374 Windsor Hwy Rte 32
Vails Gate, NY
Seekamp Lumber Co
(845) 361-2220
2551 Route 302
Middletown, NY
LOWE'S OF NEWBURGH, NY
845 567-2860
1239 ROUTE 300 NEWBURGH, NY, 12550
Newburgh, NY
Ace Hdwe of Ellenville
(845) 647-7850
140 S Main St, Next to D'lites Ice Cream Stand
Ellenville, NY
Wadeson Home Center Inc.
845-986-2215
60 Forester Avenue
Warwick, NY
The Home Depot
(845)781-4307
254 Larkin Drive
Monroe, 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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