Fibers for Permeability Beacon 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-Poughkeepsie
845-486-8828
35 Patrick Lane Noxon BussPark Poughkeepsie, NY, 12603
Poughkeepsie, NY
LOWE'S OF NEWBURGH, NY
845 567-2860
1239 ROUTE 300 NEWBURGH, NY, 12550
Newburgh, NY
Rim Supply
845-565-5220
2 Johnes Street
Newburgh, NY
The Home Depot
(845)298-9200
1570 Route 9
Wappingers Falls, NY
Kmart 9462 / Cross Merch
(845) 561-2334
374 Windsor Hwy Rte 32
Vails Gate, NY
Fastenal- Newburgh
845-564-1552
13 Jeanne Drive Newburgh, NY, 12550
Newburgh, NY
Lowe's of Lloyd
845-834-5000
650 Route 299 Highland, NY, 12528
Highland, NY
TOOL NUT
(914) 621-0200
247 MAHOPAC AVENUE YORKTOWN HEIGHTS, NY, 10598
Yorktown Heights, NY
The Home Depot
(914)528-1539
3131 E Main St
Mohegan Lake, NY
Lowe's
(845) 298-4720
1941 South Road
Poughkeepsie, 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

Related Articles
- High Cement Content Problems Beacon NY
Portland cement gives a mortar added durability, high early strength, a consistent hardening rate, and high compressive and bond strengths. However, mortar with excessively high cement contents can affect water permeability and durability of the masonry.
- Energy-Efficient Product Reviews Beacon NY
- High-Build Coatings Beacon NY
- Green and Healthy Products Beacon NY
- Engineered Lumber Beacon NY
- Fiber Reinforced Concrete Beacon NY
- Emergency Tire Repair Products Beacon NY