Fibers for Permeability Rochester 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

Lowe's
(585) 395-6100
300 Owens Road
Brockport, NY
LOWE'S OF HENRIETTA, N. Y.
585 424-1340
2350 MARKETPLACE DRIVE ROCHESTER, NY, 14623
Rochester, NY
Crown Electric Supply Co Inc
585-265-2480
75 Route 104
Union Hill, NY
Beyond Hardware
(585) 377-5540
2155 Penfield Road
Penfield, NY
Kmart 3295 / Cross Merch
(716) 227-4350
3049 W Ridge Rd
Rochester, NY
Woodcraft - Rochester
585-292-9690
Henrietta Plaza
Rochester, NY
LOWE'S OF GREECE, NY
585 453-7500
3150 WEST RIDGE ROAD ROCHESTER, NY, 14626
Rochester, NY
LOWE'S OF WEBSTER, NY
585 787-7900
900 FIVE MILE LINE ROAD WEBSTER, NY, 14580
Webster, NY
Avon True Value & Auto
(585) 226-8996
275 E Main Street
Avon, NY
The Home Depot
(585)342-0970
1111 E Ridge Rd
Rochester, 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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