Organic matter has the potential for decomposition with time. The dgree of decomposition is dependent on the availability of nutrients and type of fiber in both aerobic and anaerobic digestion.
Organic matter has the potential for decomposition with time. The dgree of decomposition is dependent on the availability of nutrients and type of fiber in both aerobic and anaerobic digestion.
Although, the use of natural fibers in making concrete is recommended since several types of these fibers are available locally and are plentiful. Few studies have been reported on the long-term behavior of natural fiber reinforced concrete .
However, the major disadvantage of using natural fibers is that the fibers will decay over time and the composite will lose its strength, resulting in sudden brittle failure. Hence, proper treatment of the fibers before mixing may be necessary. Some types of admixtures, such as resins and gums, can be tested to prevent decay of natural fibers that have been embedded in concrete.
(for more details, please you can see:
R. SETHUNARAYANAN, S. CHOCKALINGAM, AND R. RAMANATHAN "Natural Fiber Reinforced Concrete" , TRANSPORTATION RESEARCH RECORD 1226 57, http://onlinepubs.trb.org/Onlinepubs/trr/1989/1226/1226-008.pdf )
Please see this:
Chapter Organic Fibers in Cementitious Materials
thank you all for useful answers, but isn't true that the concrete bonds keep materials inside without reaction especially there is no air?
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