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    戴建國  黃承逵  趙國藩
    (大連理工大學土木系  116023)

[提要]  介紹了混凝土中常見裂縫的種類及成因，并以亂向分布聚丙烯纖維為例，綜合分析了合成纖維對混凝土中非結構性裂縫的控制機理。
[關鍵詞]  非結構性裂縫 合成纖維 控制

Types and causes of non-structural cracks in concrete are discribed. Furthermore, principles that synthetic fibers control the non-structural cracks in concrete have been explained. The work also has signifcance on how to exactly apply the synthetic fibers in actual concrete engineering.
Keywords: non-structural cracks; synthetic fibers; control