Fibers for Permeability Queensbury 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

St Andrews Ace Hardware
(518) 792-2193
827 State Route 9, McDonalds Glen Street
Queensbury, NY
GUNS & HOSES
(518) 746-9040
1075 Dix Ave Hudson Falls, NY, 12839
Hudson Falls, NY
Walker's Farm, Home & Tack
518-639-5223
5565 State Route 4
Fort Ann, NY
The Home Depot
(518)798-8301
820 Route 9
Queensbury, NY
Kmart 4928 / Cross Merch
(518) 743-0290
308 Dix Avenue
Queensbury, NY
Noble Ace Hardware
(518) 761-6777
80 William St, Hannaford on Rte. 9
South Glens Falls, NY
Fastenal- Queensbury
518-793-3333
17 Boulevard Queensbury, NY, 12804
Queensbury, NY
LOWE'S OF GLENS FALLS, N. Y.
518 798-9050
251 QUAKER RD. QUEENSBURY, NY, 12804
Queensbury, NY
Braley & Noxon
518-251-2855
4033 St Rt 9
Warrensburg, NY
Lowe's
(518) 798-9050
251 Quaker Road
Queensbury, 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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