In order to analyze the feasibility of modifying traditional concrete with plant fiber reinforcement,several kinds of forest tree natural fiber reinforced concrete were prepared by taking natural fiber such as coir fiber as an example. The comprehensive properties of several kinds of concrete,including mechanical properties,durability and thermal physical properties,were tested and analyzed. The results show that compared with sisal,jute,hibiscus,etc.,coir fiber has the most prominent reinforcement effect on common concrete of prefabricated buildings,and its impact resistance exceeds 250NM. After soaking in 10％NaOH solution for 28d,coir fiber reinforced modified concrete has the lowest quality loss rate under freeze-thaw conditions. The comprehensive insulation effect of coir fiber reinforced modified concrete is better.
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