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Evaluation of Polyester Fiber Reinforced Concrete for use in Cement Concrete Pavement Works

机译：用于水泥混凝土路面工程的聚酯纤维增强混凝土的评估

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Polyester Fiber Reinforced Concrete (PFRC) has been evaluated for use as a cement concrete pavement material. The study focused on laboratory evaluation of various mechanical and durability properties of PFRC, with and without fly ash. Few tests were also conducted at the age of 24 months to study the long-term behaviour of PFRC. The PFRC exhibited improved flexural and compressive strength, abrasion resistance, and reduced drying shrinkage over that of plain cement concrete (PCC). There is no significant change/reduction in resistance to durability as compared to PCC. There is also no reduction in the long-term properties of PFRC. Load-deflection test carried out on PFRC slabs through a Falling Weight Deflectometer (FWD) indicated that the deflection of PFRC and PCC slabs, of similar thickness, are comparable. It is concluded that polyester fibers are alkali resistant, and PFRC can be used in the pavement quality concrete (PQC), and as over lays, with no adverse affect on concrete. The use of fibers can result in cement saving up to 10 percent, and in the presence of fly ash, the saving in cement can be up to 35 percent. Due to their non-biodegradability, the use of polyester fibers in cement concrete road works can also help in conservation of environment.
机译：聚酯纤维增强混凝土（PFRC）已被评估用作水泥混凝土路面材料。该研究的重点是在有和没有飞灰的情况下，PFRC的各种机械和耐久性能的实验室评估。在24个月大时也很少进行测试以研究PFRC的长期行为。与普通水泥混凝土（PCC）相比，PFRC表现出改善的抗弯强度和抗压强度，耐磨性并减少了干缩。与PCC相比，耐用性没有显着变化/降低。 PFRC的长期性能也不会降低。通过落锤挠度计（FWD）对PFRC板进行的载荷挠度测试表明，厚度相似的PFRC和PCC板的挠度可比较。结论是聚酯纤维是耐碱的，PFRC可以用于铺面质量的混凝土（PQC）和铺面层，对混凝土没有不利影响。纤维的使用可以使水泥节省多达10％，而在存在飞灰的情况下，水泥可以节省多达35％。由于其不可生物降解性，在水泥混凝土道路工程中使用聚酯纤维也有助于保护环境。

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