Test results show that the carbon fiber with high elastic modulus can not only improve strength performance but also improve toughness of cement mortar, and that the polypropylene fiber with low elastic modulus can only toughen cement mortar.

• 试验结果表明，高弹性模量的碳纤维对水泥砂浆既能增强，又可显著增韧；低弹性模量的聚丙烯纤维对水泥砂浆只能增韧。