Fibers for Permeability Wappingers Falls 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
(845) 834-5000
650 Route 299
Highland, NY
LOWE'S OF NEWBURGH, NY
845 567-2860
1239 ROUTE 300 NEWBURGH, NY, 12550
Newburgh, NY
The Home Depot
(845)896-0824
450 State Route 9
Fishkill, NY
The Home Depot
(845)279-9669
80 Independence Way SE
Brewster, NY
Poughkeepsie Galleria
(845) 298-3700
2001 South Rd
Poughkeepsie, NY
Williams Lumber Inc
(845) 698-1004
4246 Albany Post Rd
Hyde Park, NY
J & R TOOL CO
(845) 279-6169
3651 DANBURY RD, RTE 6 BREWSTER, NY, 10509
Brewster, NY
The Home Depot
(914)528-1539
3131 E Main St
Mohegan Lake, NY
The Home Depot
(845)561-6540
1220 Route 300
Newburgh, NY
The Home Depot
(845)298-9200
1570 Route 9
Wappingers Falls, 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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