Fibers for Permeability Yonkers 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
(718) 249-1151
118 2Nd Avenue
Brooklyn, NY
LOWE'S OF N. BERGEN, N.J.
201 662-0932
7801 TONNELLE AVENUE NORTH BERGEN, NJ, 07047
North Bergen, NJ
Howard Supply
212-971-3127
399 8th Avenue
New York, NY
The Home Depot
(973)680-8700
60 Orange St
Bloomfield, NJ
Bronx-Fordham Rd
(718) 817-7300
404 E Fordham Road
Bronx, NY
Mitchell Simon Co Inc
(201) 568-2108
15 S Dean St
Englewood, NJ
Fastenal- Woodside
718-507-8193
57-08 37th Avenue Woodside, NY, 11377
Woodside, NY
LOWE'S OF ORANGEBURG, NY
845 613-6000
206 ROUTE 303 ORANGEBURG, NY, 10962
Orangeburg, NY
Bic Supply
718-330-1800
Brooklyn Navy Yard Bld131
Brooklyn, NY
The Home Depot
(718)278-9031
50-10 Northern Blvd
Long Island City, 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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