Fibers for Permeability Ridgewood 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.
Hudson Supply of Newark LLC
135 Lafayette St, Penn Station and Devils Arena
57-08 37th Avenue Woodside, NY, 11377
94 Kraft Ave
The Home Depot
172 Fulton Ave
Kmart 9419 / Cross Merch
66-26 Metropolitan Ave
Middle Vlg, NY
607 18th Street
77 Hackensack Ave Kearny, NJ, 07032
LOWE'S OF N. BERGEN, N.J.
7801 TONNELLE AVENUE NORTH BERGEN, NJ, 07047
North Bergen, NJ
Mar Jam Supply, Inc.
20 Rewe Street
Newport Centre Mall
50 Mall Dr West
Jersey City, NJ
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