Fibers for Permeability Binghamton 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.

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Lowe's
(607) 770-9800
225 Sycamore Road
Vestal, NY
Fastenal- Vestal
607-729-7153
320 N Jensen Rd Vestal, NY, 13850
Vestal, NY
Home Central
(607) 785-3307
199 Stage Road
Vestal, NY
Kovarik True Value Hardware
(607) 729-0802
276 Clinton St
Binghamton, NY
Oakdale Mall
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Rt 17 Expy Exit 70
Johnson City, NY
Lowe's
(607) 762-1000
1318 Upper Front Street
Binghamton, NY
Fastenal- Binghamton
607-724-4177
441 Court Street Binghampton, NY, 13904
Binghampton, NY
Greene's Ace Home Center
(607) 692-3400
2563 W Main St
Whitney Point, NY
Greggs True Value
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Whitney Point Plz -rt 11 North
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Kmart 3521 / Cross Merch
(607) 772-6618
33 W State St
Binghamton, 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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