Fibers for Permeability Patchogue 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.

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Costello's Ace Hardware
(631) 467-6565
2120 Middle Country Rd, Pathmark
Centereach, NY
Lowe's of Stony Brook, NY
631-406-2015
2150 Nesconset Highway Stony Brook, NY, 11790
Stony Brook, NY
Comercial Tortuguero, Inc
(787) 858-2965
Carr #2 Km 41.3
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Ferreteria Del Hogar True Value Hdwe.
(787) 793-1874
5 Tabonuco Caparra Ind Park
Guaynabo, NY
Brinkmann True Value Hdwe
(631) 567-6879
15 Foster Ave
Sayville, NY
Oakdale Paint & Hardware
(631) 567-9705
1460 Montauk Hwy
Oakdale, NY
Lowe's of Patchogue
631-687-6220
825 Mantauk Highway East Patchogue, NY, 11772
East Patchogue, NY
Bens True Value Hardware
(631) 775-7435
55b Route 25 (middle Country Road)
Coram, NY
Ferreteria Berrios Inc
(787) 786-2095
Av Comerio #25 Sierra Bayamon
Bayamon, NY
Ferreteria Solar El Almacigo, Inc
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Bo Almacigo Bajo Carr 371 Km 1.4
Yauco, 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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