Fibers for Permeability Monsey 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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On Time Supply
845-352-8600
14 Melnick Dr Monsey, NY, 10952
Monsey, NY
B. Rose Hardware
845-446-2061
313 Main Street
Highland Falls, NY
Jp Home Arama Inc
(973) 427-0002
111 Wagaraw Rd, HAWTHORNE DISCOUNT CENTER
Hawthorne, NJ
The Home Depot
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2024 Palisades Ctr Dr
West Nyack, NY
Hewitt - Sears Hardware Stores
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1926 Union Valley Rd
Hewitt, NJ
BOARDS & BEAMS, CO.
(973) 299-6100
48 OLD JACKSONVILLE ROAD
TOWACO, NJ
Colon's Hardware
973-742-5357
306 Market Street
Paterson, NJ
Wadeson Home Center Inc.
845-986-2215
60 Forester Avenue
Warwick, NY
The Home Depot
(914)528-1539
3131 E Main St
Mohegan Lake, NY
Hackensack - A
(201) 525-5200
436 Main St
Hackensack, NJ
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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