Fibers for Permeability White Plains 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

United Rentals/Stamford
(203) 327-0090
224 Selleck Street Stamford, CT, 06902
Stamford, CT
Hometown Hardware
201-768-0330
259 Closter Dock Rd
Closter, NJ
Shields Hardware
516-767-0300
267-271 Main St
Port Washington, NY
The Home Depot
(201)336-3041
450 Hackensack Ave
Hackensack, NJ
The Home Depot
(718)828-1071
2560 Bruckner Blvd
Bronx, NY
On Time Supply
845-352-8600
14 Melnick Dr Monsey, NY, 10952
Monsey, NY
Cos Cob Hardware
203-869-9254
136 Post Road
Cos Cob, CT
Morales Home Center Express
718-665-8380
2800 Third Ave
Bronx, NY
The Home Depot
(203)854-9111
600 Connecticut Ave
Norwalk, CT
The Home Depot
(718)401-2520
600 Exterior Street
Bronx, 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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