Fibers for Permeability New Hartford 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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Fastenal- Utica
315-792-9002
2150 Oriskany Street West Utica, NY, 13502
Utica, NY
Doyle Hardware Co Inc
315-723-7398
100 First St
Utica, NY
Kime True Value Hdwe
(315) 363-8302
21 Seneca Ave
Oneida Castle, NY
Oneida - Sears Hardware Stores
(315) 363-7733
1032 Oneida Plaza Dr
Oneida, NY
Kmart 9542 / Cross Merch
(315) 866-4910
200 S Washington St
Herkimer, NY
Lowe's
(315) 351-4241
4699 Middle Settlement Road
New Hartford, NY
Cavo Builders Supplies
315-724-5970
1027 Jefferson Ave
Utica, NY
Collis True Value Hardware
(315) 866-0826
104 N Main St
Herkimer, NY
Lowe's
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1200 Lowe'S Drive
Oneida, NY
Sangertown Sq
(315) 793-3900
Rt 5 & 5A
New Hartford, 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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