Fibers for Permeability Hempstead 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

Roberts Plywood Co.
800-422-4944
45 North Industry Court
Deer Park, NY
A G Locksmith & Hardware
(718) 497-5882
347 Knickerbocker Ave
Brooklyn, NY
Decorama Bldg & Plb Supply Inc
718-651-1800
1233 Metropolitan Ave
Brooklyn, NY
The Home Depot
(516)794-1101
1300-1320 Corporate Dr
Westbury, NY
Hicksville - A
(516) 733-3000
195 N Broadway
Hicksville, NY
Monster Woodshop
888-506-6678
607 18th Street
Brooklyn, NY
Suburban Mills
631-351-6445
16 Railroad St
Huntington Station, NY
Dick's Do it Best Hardware
212-425-1070
9 Gold Street
New York, NY
The Home Depot
(718)641-5500
11220 Rockaway Blvd
South Ozone Park, NY
Kmart 9420 / Cross Merch
(718) 430-9439
1998 Bruckner Blvd
Bronx, 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

Related Articles
- High Cement Content Problems Hempstead 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.
- Green and Healthy Products Hempstead NY
- Fiber Reinforced Concrete Hempstead NY
- High-Build Coatings Hempstead NY
- Energy-Efficient Product Reviews Hempstead NY
- Engineered Lumber Hempstead NY
- Emergency Tire Repair Products Hempstead NY