Engineered cementitious composite (ECC) material is a high-strength, fiber-reinforced, ductile mortar mixture that can exhibit tensile strains of up to 5%. ECC has a dense matrix, which gives the material exceptional durability characteristics. The durability and the mechanical properties of ECC make it a desirable, though expensive, construction material. This paper presents an extensive evaluation of a modified ECC (MECC) prepared with locally sourced raw materials for use as a bridge deck overlay material. MECC is a mixture of cement, fly ash, water, concrete sand, and polyvinyl alcohol fibers. Concrete sand was used in lieu of the typically used silica sand to reduce the high material cost for ECC. Three representative fine aggregates from throughout Nevada were selected to understand how the local aggregates perform in MECC mixes. In total, 18 laboratory mixes of MECC, the polymer concrete, and a traditional PCC mix were evaluated by multiple performance and mechanical tests. After the completion of the laboratory phase, two field trials were conducted to determine the feasibility of batching of large amounts of MECC at commercial concrete batch plants. The large-scale trial of the batches showed that MECC could be produced at typical concrete batch plants with minimal adjustments to the standard of practice. Laboratory test results showed that the use of locally available materials in MECC provided a material with the desirable mechanical and durability properties for use as a bridge deck overlay in Nevada.


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    Title :

    Evaluation of Modified Engineered Cementitious Composite with Local Materials


    Additional title:

    Transportation Research Record


    Contributors:


    Publication date :

    2016-01-01




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English



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