Fibers for Permeability Tarrytown 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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TOOL NUT
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247 MAHOPAC AVENUE YORKTOWN HEIGHTS, NY, 10598
Yorktown Heights, NY
Ludewig's Hardware
201-836-4991
321 Queen Anne Road
Teaneck, NJ
Schall Paint & Hardware
914-965-3339
311 Saw Mill River Rd
Yonkers, NY
The Home Depot
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75 McLean Blvd
Paterson, NJ
Bronx-Fordham Rd
(718) 817-7300
404 E Fordham Road
Bronx, NY
Fastenal- Suffern
845-357-9515
11 Washington Avenue Suffern, NY, 10901
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Ramsey Hardware & Paint
201-327-0433
14 East Main
Ramsey, NJ
Nunez Depot
718-665-8380
2756 3rd Avenue
Bronx, NY
The Home Depot
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99 State Route 17 North
Lodi, NJ
Paramus Park
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585 From Rd
Paramus, NJ

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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