Fibers for Permeability Camillus 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

Village Ace Hardware
(315) 834-2275
2701 Erie Dr
Weedsport, NY
LOWE'S OF AUBURN, N. Y.
315 253-3410
299 GRANT AVE. AUBURN, NY, 13021
Auburn, NY
Burke's Home Center
315-592-2244
65 North Second Street
Fulton, NY
P-b Hardware, Inc.
(315) 776-4313
143 Main Street
Port Byron, NY
Kmart 4034 / Cross Merch
(315) 455-7393
2803 Brewerton Rd
Mattydale, NY
Village Ace Hardware
(315) 637-7696
204 S Manlius St
Fayetteville, NY
Lowe's
(315) 652-1200
3856 State Route 31
Liverpool, NY
T&K Lumber Co, Inc.
315-689-3005
170 Route 5 West Elbridge, NY, 13060
Elbridge, NY
Nightingale True Value Hdwe
(315) 673-2001
4068 South St
Marcellus, NY
Nightingale True Value
(315) 433-5150
3525 James St
Syracuse, 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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