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Home > Publications > International Concrete Abstracts Portal
The International Concrete Abstracts Portal is an ACI led collaboration with leading technical organizations from within the international concrete industry and offers the most comprehensive collection of published concrete abstracts.
Title: Effect of Changes in Matrix Properties With Time on the Measured and Predicted Long Term Properties of Fiber Reinforced Cement
Author(s): D J. Hannan
Publication: Special Publication
Appears on pages(s): 783-798
Keywords: durability; fiber reinforced cement; flexure; polypropylene; tension; Materials Research
Abstract:Natural weathering, dry air storage, and water curing for long periods of time will have different effects on matrix properties in most fiber reinforced cements. Changes in matrix properties are shown to effect the cracking stress of the composite that will change with time and curing conditions, regardless of changes in fiber properties. The reasons for the differences in the critical fiber volume in uniaxial tension and flexure are explained, and examples are given of 10-year tests on thin cement-based sheets containing networks of fibrillated polypropylene film in which the effects are demonstrated. It is shown that the manufacturer of the composite needs to have an understanding of these problems if the component is to remain ductile for many years in natural weathering conditions.
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