Fibers for Permeability Freeport 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

Suburban Mills
631-351-6445
16 Railroad St
Huntington Station, NY
Fastenal- Farmingdale
631-391-0980
61 D Carolyn Blvd Farmingdale, NY, 11735
Farmingdale, NY
Fastenal- Oceanside
516-764-1013
104 Mott St Oceanside, NY, 11572
Oceanside, NY
Canarsie Lumber, Inc
718-649-2200
826 Rockaway Parkway
Brooklyn, NY
Queens -Sears Hardware Stores
(718) 776-8156
22005 Hillside Ave
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Roberts Plywood Co.
800-422-4944
45 North Industry Court
Deer Park, NY
Costello's Ace Hardware
(516) 221-0010
2667 Merrick Rd
Bellmore, NY
Fastenal- Hicksville
516-942-2640
73 Bloomingdale Rd Hicksville, NY, 11801
Hicksville, NY
Great Neck Hardware
516-439-4399
135 Cuttermill Rd
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Mar-Jam Supply Inc.
631-249-4900
885 Conklin Avenue
Farmingdale, NY
Data Provided by:
  

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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