Fibers for Permeability Manlius 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
(315) 350-2801
131 Simon Drive
Syracuse, NY
Vella's Do it Best Home Center
315-623-9786
45 Redfield St
Constantia, NY
Valu Home Center #51
315-452-6822
3803 North Brewerton Rd
North Syracuse, NY
La Fayette True Value Hdwe
(315) 677-9709
2945 Rt 11
La Fayette, NY
Lowe's
(315) 366-3100
1200 Lowe'S Drive
Oneida, NY
Suburban Hardware Inc
(315) 652-7850
7990 Oswego Rd
Liverpool, NY
Kime's Do it Best Home Center
315-697-3232
3381 Seneca Turnpike
Canastota, NY
Valu Home Center #52
315-414-0186
123 Shop City Plaza
Syracuse, NY
Cooley's Do it Best Home Ctr
315-684-3074
9 Cambridge Ave
Morrisville, NY
The Home Depot
(315)484-7240
3756 Milton Avenue
Camillus, 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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