Fibers for Permeability Latham 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

Shaker Hardware
(518) 785-9052
607 Watervliet Shaker Rd
Latham, NY
Lowe's
(518) 382-8371
422 Balltown Road
Schenectady, NY
A. Phillips Hardware
518-459-2300
1157 Central Avenue
Albany, NY
Lowe's
(518) 436-6020
271 Route 9 West
Glenmont, NY
Colonie Ctr Mall
(518) 454-3000
1425 Central Ave
Albany, NY
Robinson's Hardware
(518) 456-7383
1874 Western Ave, 1 mile West of Crossgates Mall
Albany, NY
Lowe's
(518) 956-9407
1482 Central Avenue
Colonie, NY
LOWE'S OF NISKAYUNA, NY
518 382-8371
422 BALLTOWN ROAD SCHENECTADY, NY, 12304
Schenectady, NY
The Home Depot
(518)782-9867
579 Troy-Schenectady Rd
Latham, NY
Lowe's
(518) 952-8789
93 Freemans Bridge Road
Glenville, 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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