Fibers for Permeability Mastic 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

ABC Supply Co.,Inc/Bohemia
631-285-7710
2950 Veterans Memorial Hwy Bohemia, NY, 11716
Bohemia, NY
Centereach True Value Hardware
(631) 732-2220
1408 Middle Country Rd
Centereach, NY
Suffolk Supply True Value
(631) 924-3935
1504 Rocky Point Rd
Middle Island, NY
Lowe's
(631) 687-6220
825 Montauk Highway
East Patchogue, NY
5137 Nesconset Hwy
(631) 476-0438
Rr 347
Pt Jefferson, NY
Long Island Hardware
(631) 467-1316
3606 Veterans Memorial Hwy, Just West of the Airport
Bohemia, NY
Brinkmann Hardware
(631) 363-2116
125 Montauk Hwy
Blue Point, NY
Ferreteria Berrios Inc
(787) 786-2095
Av Comerio #25 Sierra Bayamon
Bayamon, NY
The Home Depot
(631)286-4665
10 Gateway Blvd
Patchogue, NY
Kmart 4871 / Cross Merch
(631) 732-1725
2280 N Ocean Ave
Farmingville, 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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