@inproceedings{f39159762ec9446c925c1f50566ef2a4,
title = "Cement-based cross-ply and sandwich laminate composites",
abstract = "A class of new structural materials with a significant degree of ductility and strength are introduced that are durable, strong, and cost effective. High fiber content cementitious materials (FRC materials) are manufactured using a computer control led closed loop system for pultrusion and filament winding. Composites consisting of unidirectional lamina, and [0/90/0] are manufactured. In addition, sandwich composites with a lightweight aggregate core and 0/90 lamina as the skin elements are studied. Mechanical response of laminates is measured using closed loop uniaxial tensile and flexural tests. Results indicate that tensile strength of composites containing 5% alkali-resistant (AR) glass libers can exceed 40 MPa. The ultimate strain capacity can also be increased to more than 2% using cross plies at various orientations. Significant cost savings and weight reduction may be achieved by replacing the inner layers of the boards with a lightweight aggregate mixture at a marginal loss of strength. The ultimate strain capacity of the composites is a function of ply orientation, thickness, and stacking sequence. Various mechanisms of delamination. debonding. and crack deflection are identified, resulting in an ultimate strain capacity of 2%. and a fracture toughness as much as two orders of magnitude higher than the contcntional FRC materials. The extent of matrix cracking, ply delamination. and crack deflection mechanisms are studied by means of fluorescent microscopy.",
keywords = "Composites, Fiber-reinforced concrete, Filament winding, High-performance concrete, Laminates, Pultrusion, Sandwich laminates, Strength glass fibers",
author = "A. Pivacek and Haupt, {G. J.} and R. Vodela and B. Mobasher",
note = "Funding Information: This study was conducted under financial support from National Science Foundation Research Initiation Award #MSM-921 1063, program director Dr. Ken Chung. This support is greatlv appreciated. Publisher Copyright: {\textcopyright} 2000 American Concrete Institute. All rights reserved.; High-Performance Fiber-Reinforced Concrete Thin Sheet Products 1999 ; Conference date: 14-03-1999 Through 19-03-1999",
year = "2000",
month = apr,
day = "1",
language = "English (US)",
series = "American Concrete Institute, ACI Special Publication",
publisher = "American Concrete Institute",
pages = "55--75",
editor = "Alva Peled and Shah, {Surendra P.} and Nemkumar Banthia",
booktitle = "High-Performance Fiber-Reinforced Concrete Thin Sheet Products",
}