Fibers for Permeability New Windsor 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

Fastenal-Poughkeepsie
845-486-8828
35 Patrick Lane Noxon BussPark Poughkeepsie, NY, 12603
Poughkeepsie, NY
LOWE'S OF MIDDLETOWN, NY.
845 692-8044
700 NORTH GALLERIA DRIVE MIDDLETOWN, NY, 10941
Middletown, NY
The Home Depot
(914)528-1539
3131 E Main St
Mohegan Lake, NY
Lowe's
(845) 298-4720
1941 South Road
Poughkeepsie, NY
Poughkeepsie - D
(845) 471-9300
635 Dutchess Turnpike
Poughkeepsie, NY
Williams Lumber Inc
(845) 221-2751
908 Route 82
Hopewell Junction, NY
Lowe's of Chester
845-572-2400
3924 Summerville Way Chester, NY, 10918
Chester, NY
Pomona Do it Best Hardware
845-364-5678
1581 Route 202
Pomona, NY
The Home Depot
(845)781-4307
254 Larkin Drive
Monroe, NY
Galleria Mall
(845) 695-5000
1 N Galleria Dr Ste 144
Middletown, 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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