Fibers for Permeability Mamaroneck 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

Fastenal- Mineola
516-294-7132
315-B Roslyn Road Mineola, NY, 11501
Mineola, NY
United Rentals/Stamford
(203) 327-0090
224 Selleck Street Stamford, CT, 06902
Stamford, CT
Andre's Hardware
914-793-7012
94 Kraft Ave
Bronxville, NY
The Home Depot
(914)235-7575
55 Weyman Ave
New Rochelle, NY
Kmart 9420 / Cross Merch
(718) 430-9439
1998 Bruckner Blvd
Bronx, NY
Fastenal- Brooklyn
718-609-9435
190 West St. Section 1B Brooklyn, NY, 11222
Brooklyn, NY
LOWE'S OF GARDEN CITY, NY
516 794-6531
700 DIBBLEE DRIVE GARDEN CITY, NY, 11530
Garden City, NY
Howard Supply
212-971-3127
399 8th Avenue
New York, NY
The Home Depot
(516)542-9200
2000 Hempstead Turnpike
East Meadow, NY
Rego Park - A
(718) 830-5900
9605 Queens Blvd
Rego Park, 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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