Fibers for Permeability Glens 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

Fastenal- Queensbury
518-793-3333
17 Boulevard Queensbury, NY, 12804
Queensbury, NY
LOWE'S OF SARATOGA SPRINGS, NY
518 583-3777
10 LOWE'S DRIVE SARATOGA SPRINGS, NY, 12866
Saratoga Springs, NY
The Home Depot
(518)581-6480
3043 Route 50
Saratoga Springs, NY
Wilton Mall
(518) 583-8500
3065 Route 50
Saratoga Spgs, NY
Kmart 9274 / Cross Merch
(518) 692-9608
1251 State Rte 29
Greenwich, NY
Ron's Hardware Inc
(518) 644-9600
4979 Lake Shore Dr
Bolton Landing, NY
LOWE'S OF GLENS FALLS, N. Y.
518 798-9050
251 QUAKER RD. QUEENSBURY, NY, 12804
Queensbury, NY
The Home Depot
(518)798-8301
820 Route 9
Queensbury, NY
Lowe's
(518) 798-9050
251 Quaker Road
Queensbury, NY
Kmart 4928 / Cross Merch
(518) 743-0290
308 Dix Avenue
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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