Fibers for Permeability Potsdam 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 of Potsdam
315-268-6960
61 Country Lane Potsdam, NY, 13676
Potsdam, NY
Evans & White Ace
(315) 265-4350
1 Maple St, opposite Trinity Episcopal Church on Fall Island
Potsdam, NY
W.l. Smith Hardware Corporation
(315) 769-2408
50 E Orvis St
Massena, NY
Caswell True Value
(315) 388-5914
126 St Lawrence Avenue
Waddington, NY
St Lawrence Ctr
(315) 764-3500
6129 Saint Lawrence Ctr
Massena, NY
Fastenal- Massena
315-769-3278
166 Harte Haven Plaza Massena, NY, 13662
Massena, NY
Coakley Carpet One Ace Hardware
(315) 386-8161
2535 State Highway 68
Canton, NY
Rex Hardware
315-379-0256
125 E Main St
Canton, NY
Bicknell Building Sply
(315) 265-3900
Potsdam Canton Rd
Potsdam, NY
The Home Depot
(315)764-9930
41 Stephenville Road
Massena, 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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