Fibers for Permeability Ossining 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 Clarkstown
845-351-3500
100 Overlook Blvd Nanuet, NY, 10954
Nanuet, NY
TOOL NUT
(914) 621-0200
247 MAHOPAC AVENUE YORKTOWN HEIGHTS, NY, 10598
Yorktown Heights, NY
Ramsey Hardware & Paint
201-327-0433
14 East Main
Ramsey, NJ
The Home Depot
(845)627-2038
43 Hutton Ave
Nanuet, NY
Kmart 9415 / Cross Merch
(845) 628-6247
987 Route 6
Mahopac, NY
Fastenal- Buchanan
914-736-0156
12B White St Buchanan, NY, 10511
Buchanan, NY
RIDGEFIELD SUPPLY CO
(203) 438-2626
29 PROSPECT STREET RIDGEFIELD, CT, 06877
Ridgefield, CT
Cos Cob Hardware
203-869-9254
136 Post Road
Cos Cob, CT
Hometown Hardware
201-768-0330
259 Closter Dock Rd
Closter, NJ
Empire Tools, LLC
914-937-1773
21 Abendroth Avenue Port Chester, NY, 10573
Port Chester, 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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