Fibers for Permeability White Plains 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

BRUCKNER LUMBER & BUILDING SUPPLY
(718) 585-8787
259 Bruckner Blvd Bronx, NY, 10454
Bronx, NY
Ring's End Lumber/Darien
(203) 655-2525
181 West Ave Darien, CT, 06820
Darien, CT
Chubby's Hardware
(914) 764-5125
68 Westchester Ave
Pound Ridge, NY
Lowe's
(845) 613-6000
206 Route 303
Orangeburg, NY
Bergenfield - Sears Hardware Stores
(201) 244-9160
450 S Washington Ave
Bergenfield, NJ
Mitchell Simon Co Inc
(201) 568-2108
15 S Dean St
Englewood, NJ
ICW/INDUSTRIAL COMPONENTS
(914) 777-3245
626 Third Street Mamaroneck, NY, 10543
Mamaroneck, NY
Ace Hardware
(201) 768-7377
206 Pegasus Ave
Northvale, NJ
Woodlawn Supply
914-663-0900
772 McLean Ave
Yonkers, NY
Empire Tools, LLC
914-937-1773
21 Abendroth Avenue Port Chester, NY, 10573
Port Chester, 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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