Fibers for Permeability Port Chester 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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Woodcraft - Norwalk, CT
(203) 847-9663
215 Westport Ave
Norwalk, CT
Costello's Ace Hardware
(516) 280-7885
2323 Jericho Turnpike, In Pathmark Shopping Center/Near Charlie Brown's
Garden City Park, NY
ABC Supply Co.,Inc/Hicksville
516-822-2900
55 Ludy Street Hicksville, NY, 11801
Hicksville, NY
Weed & Duryea Do it Best Lbr
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New Canaan, CT
Lake Success S/C
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1400 Union Tpke
New Hyde Park, NY
EXOTIC WOODS USA
(631) 651-8651
698 Fort Salonga Rd
Northport, NY
Mitchell Simon Co Inc
(201) 568-2108
15 S Dean St
Englewood, NJ
Lowe's
(845) 351-3500
100 Overlook Boulevard
Nanuet, NY
CLEARVIEW PAINT & DECOR
(718) 747-5000
20-11 Francis Lewis Blvd
Whitestone, NY
Lowe's
(516) 733-7840
920 South Broadway
Hicksville, 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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