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采用快速碳化试验对掺入改性聚丙烯粗纤维和聚丙烯粗细混杂纤维(改性纤维与未改性纤维组合)的混凝土进行碳化,测定掺加不同纤维组合混凝土3,8,28 d的碳化深度,并与普通混凝土碳化深度进行对比,研究改性聚丙烯纤维和聚丙烯混杂纤维对混凝土抗碳化性能的影响。试验结果表明:在混凝土中单掺改性聚丙烯纤维使混凝土的碳化深度有所上升,而掺加聚丙烯混杂纤维纤维能改善混凝土的抗碳化性能,其效果优于单掺改性聚丙烯纤维和普通混凝土。
The rapid carbonation test was used to carbonize concrete mixed with modified polypropylene crude fiber and polypropylene mixed thickness fiber (modified fiber and unmodified fiber) to determine the carbonization of different fiber composite concrete for 3, 8, 28 d Depth, and compared with ordinary carbonation depth of concrete to study modified polypropylene fiber and polypropylene fiber hybrid concrete anti-carbonation performance. The test results show that the carbonation depth of concrete increases with the single modification of polypropylene fiber in concrete, while the incorporation of polypropylene hybrid fiber can improve the carbonation resistance of concrete, which is better than that of single-mixed modified polypropylene fiber And ordinary concrete.