Rubber-mortar composites: Effect of composition on properties

The Weibull modulus of mortar specimens containing 35% (w/w of cement content) of NaOH-treated rubber particles was calculated showing a value of 9.1 for the control and 9.4 for the specimens with rubber, indicating that the incorporation of a high amount of rubber does not change the casting reprod...

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Veröffentlicht in:Journal of materials science 2004-05, Vol.39 (10), p.3319-3327
Hauptverfasser: Segre, N, Joekes, I, Galves, A. D, Rodrigues, J. A
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container_end_page 3327
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container_title Journal of materials science
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creator Segre, N
Joekes, I
Galves, A. D
Rodrigues, J. A
description The Weibull modulus of mortar specimens containing 35% (w/w of cement content) of NaOH-treated rubber particles was calculated showing a value of 9.1 for the control and 9.4 for the specimens with rubber, indicating that the incorporation of a high amount of rubber does not change the casting reproducibility. Since the flexural strength of these rubber-containing specimens was reduced by 43%, new composites were prepared using 10% of rubber as addition or aggregate. Water sorption by immersion, resistance to acid attack, flexural strength and freeze-thaw experiments were performed. Transport properties were improved for the addition-rubber-containing composites; the best results were obtained with the aggregate-rubber-containing composites. A reduction of 15% in flexural strength was observed for addition-rubber-containing composites and 25% for the aggregate-rubber-containing composites, roughly as expected if the flexural strength varies linearly with the rubber content. Furthermore, after 60 freezing and thawing cycles, a reduction of 75% in flexural strength was observed for the control specimens and only 20% for the addition-rubber-containing specimens.
doi_str_mv 10.1023/B:JMSC.0000026932.06653.de
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subjects Acid resistance
acid tolerance
Applied sciences
Buildings. Public works
cement
Composite materials
Composition effects
Concretes. Mortars. Grouts
Exact sciences and technology
Flexural strength
Freeze thaw cycles
Freeze-thaw durability
freezing
General (composition, classification, performance, standards, patents, etc.)
Materials
Materials science
Miscellaneous (including polymer concrete, repair and maintenance products, etc.)
Mortars (material)
Reduction
Rubber
Sodium hydroxide
sorption
Submerging
thawing
Transport properties
Weibull modulus
title Rubber-mortar composites: Effect of composition on properties
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