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.

Local Companies

LOWE'S OF ORANGEBURG, NY
845 613-6000
206 ROUTE 303 ORANGEBURG, NY, 10962
Orangeburg, NY
Hometown Hardware
201-768-0330
259 Closter Dock Rd
Closter, NJ
Greenwood Lumber
845-477-2699
702 Jersey Ave
Greenwood Lake, NY
The Home Depot
(973)357-1305
75 McLean Blvd
Paterson, NJ
Hackensack - A
(201) 525-5200
436 Main St
Hackensack, NJ
BOARDS & BEAMS, CO.
(973) 299-6100
48 OLD JACKSONVILLE ROAD
TOWACO, NJ
Lowe's of Paterson, NJ
973-341-8102
265 McLean Boulevard Paterson, NJ, 07504
Paterson, NJ
Haworth Hardware
201-384-8146
300 St Nicholas Ave
Haworth, NJ
Wadeson Home Center Inc.
845-986-2215
60 Forester Avenue
Warwick, NY
The Home Depot
(845)348-0566
2024 Palisades Ctr Dr
West Nyack, 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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