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首页> 外文会议>12th international inorganic-bonded fiber composites conference >COATED FIBERGLASS FOR CEMENT BASED COMPOSITES
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COATED FIBERGLASS FOR CEMENT BASED COMPOSITES

机译：水泥基复合材料的涂层玻璃纤维

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Expensive alkali-resistant glass fibers have been used in several segments of civil construction,rnincluding cement composites to improve their mechanical properties. Due to the high alkalinityrnof ordinary Portland cement (OPC) used in such applications, the glass fibers must be alkali resistant tornwithstand corrosion. On the other hand, E fiberglass is very damaged by OPC although it has a lower costrnthan AR fiberglass. Hence protecting E fiberglass with alkali-resistant coatings may offer an opportunity forrnusing low-cost fibers for current applications. Additionally, hydrophobic coatings should be avoided, asrnthey usually reduce the mechanical properties of the fiber-matrix interface and consequently affect thernperformance of the adhesion between the two phases in the cement based composite. The aim of this work isrnto develop and test a coating composition which by-passes these and other drawbacks of conventionalrncoatings contributing for a homogeneous distribution and effective compatibility of the fiberglass in therncement matrix. Accelerated aging tests performed in conventional soda-lime-silica fiber glass with andrnwithout coating using cement solution (pH～13.2) as the degradation agent at 90℃ after sixrndays showed imperceptible alkali attack in the coated fiberglass, whereas fiberglass without coating werernseverely damaged or even partially dissolved as it could be expected . Fiber-cement composites using bothrnfibers were produced using a slurry dewatering process followed by compression and their mechanicalrnproperties before and after aging tests are being evaluated.
机译：昂贵的耐碱玻璃纤维已用于民用建筑的多个领域，包括水泥复合材料以改善其机械性能。由于在此类应用中使用了高碱性的普通波特兰水泥（OPC），因此玻璃纤维必须耐碱，耐腐蚀。另一方面，尽管E玻璃纤维的成本比AR玻璃纤维的成本低，但OPC却对其造成了很大的损害。因此，用耐碱涂层保护E玻璃纤维可为当前应用提供低成本纤维的机会。另外，应避免使用疏水涂层，因为它们通常会降低纤维-基质界面的机械性能，并因此影响水泥基复合材料中两相之间的粘合性能。这项工作的目的是开发和测试一种涂料组合物，该涂料组合物克服了传统涂料的这些和其他缺点，从而有助于玻璃纤维在增强基质中的均匀分布和有效相容性。在传统的钠钙硅玻璃纤维玻璃中，在有水泥溶液（pH〜13.2）作为降解剂的情况下，经过六天的老化试验后，在90℃下进行了加速老化试验，结果表明，镀膜玻璃纤维对碱的侵蚀明显，而没有涂层的玻璃纤维则受到严重破坏甚至破坏。可以预料的部分解散。使用两种纤维的纤维水泥复合材料是通过浆液脱水工艺，然后进行压缩生产的，其机械性能在老化测试之前和之后进行了评估。

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