Development Of Specifications For Engineered Cementitious Composites For Use In Bridge Deck Overlays

Loading...
Thumbnail Image

Authors

Hajj, Elie Y.
Sanders, David H.
Weitzel, Nicholas D.

Issue Date

2016

Type

Technical Report

Language

Keywords

WRSC

Research Projects

Organizational Units

Journal Issue

Alternative Title

Abstract

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, giving the material exceptional durability characteristics. The durability and mechanical properties of ECC make it a desirable, though expensive, construction material. This study presents an extensive evaluation of modified engineered cementitious composite (MECC) using locally sourced raw materials for use as a bridge deck overlay material. MECC is a mixture of cement, fly ash, water, concrete sand, and poly-vinyl alcohol fibers. The concrete sand used in this study was used in lieu of the typically used silica sand to reduce the high material cost for ECC. Three different representative aggregates from throughout Nevada were selected to understand how the local aggregates would perform in MECC mixes. In total, eighteen different laboratory mixes of MECC were evaluated using multiple performance and mechanical tests. After the completion of the laboratory phase, two different field trials were conducted to determine the feasibility of batching large amounts of MECC at commercial concrete batch plants. Based on the results of the laboratory evaluation, large-scale trial batch

Description

Citation

Publisher

License

In Copyright

Journal

Volume

Issue

PubMed ID

DOI

ISSN

EISSN

Collections