Fibers for Permeability Penfield 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

Mayer Hardware, Inc
(585) 288-7665
226 Winton Rd N
Rochester, NY
Williamson Hardware Inc
(315) 589-4011
4101 Main St & Rte 21, Main Street & Rt 21 At the Four Corners
Williamson, NY
Abrasive Tool Corp
585-254-4500
1555 Emerson Street
Rochester, NY
Kmart 3282 / Cross Merch
(585) 426-0760
810 Paul Rd
Rochester, NY
Marketplace Mall
(585) 475-8255
10 Miracle Mile Dr
Rochester, NY
Woodcraft - Rochester
585-292-9690
Henrietta Plaza
Rochester, NY
ABC Supply Co.,Inc/Rochester
585-247-8100
1450 Lyell Ave Rochester, NY, 14606
Rochester, NY
J. Kozel/Tool Ranch
(585) 436-9807
1150 Scottsville Rd Rochester, NY, 14624
Rochester, NY
Greece Ridge Ctr
(585) 723-5300
317 Greece Ridge Center Dr
Rochester, NY
200 Irondequoit Mall Dr
(585) 336-4455
200 Irondequoit Blvd
Rochester, NY
Data Provided by:
  

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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