Fibers for Permeability Auburn 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- Auburn
315-258-8054
360 Grant Ave Auburn, NY, 13021
Auburn, NY
T&K Lumber Co, Inc.
315-689-3005
170 Route 5 West Elbridge, NY, 13060
Elbridge, NY
Secor Lumber Company Inc
315-365-2838
13140 W Church St
Savannah, NY
Nightingale True Value Hdwe
(315) 673-2001
4068 South St
Marcellus, NY
The Home Depot
(315)484-7240
3756 Milton Avenue
Camillus, NY
Lowe's
(315) 253-3410
299 Grant Avenue
Auburn, NY
LOWE'S OF AUBURN, N. Y.
315 253-3410
299 GRANT AVE. AUBURN, NY, 13021
Auburn, NY
Ag Trac Llc
315-497-1650
1044 State Route 34
Genoa, NY
Ferrara & Sons Bldg. Supp.,inc
315-568-9431
30 West Bayard Street
Seneca Falls, NY
P-b Hardware, Inc.
(315) 776-4313
143 Main Street
Port Byron, 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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