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- W3003147727 abstract "This study investigates the behavior of structural concrete containing ArtificiallyContaminated Sand (ACS) as a fine aggregate replacement. Sand passing sieve #30was artificially contaminated by adding benzene at concentrations of 0.5% and 3% byweight. The ACS was used to replace clean sand in concrete mixtures at tworeplacement ratios; namely 40% and 80% by weight. The resulting concrete mixtureswere tested for setting times [ASTM C 403], for compressive strength [ASTM C 39], fordurability to freezing and thawing [ASTM C 666 procedure A], and for air emissions ofhydrocarbons [ head-space method]. The concrete mixtures were ·also used to castseven singly reinforced single span beams. The beams which had a rectangularsection and a 7 ft. 3 in. clear span were subjected to middle point loading up to failure.The crack propagation, deflection, and ultimate strength were monitored for eachbeam.The findings indicate that, within the range of variables of this investigation, theaddition of ACS to concrete results in an increase of 15% in the final setting time and areduction of 20% in the compressive strength. All tested concrete mixtures containingACS were able to sustain 300 cycles of freezing and thawing between 0°F and 40°F.Based on the current established guidelines, it was found that these concrete mixturesare satisfactory with respect to frost resistance. The air emission results indicate thatthis stabilization technique actually decreases the emission of semi-solublecomponents such as VOC's by three orders of magnitude and that addition of fly ashfurther decreases the emissions from the surface of solidified matrix (up to six orders ofmagnitude). The results of the full-scale beam tests indicate that the current analyticalmethods used to estimate the cracking moment, flexure strength, and load-deflectionbehavior of reinforced concrete beams can be used for the analysis of beamscontaining ACS concrete. However, it is found that at steel reinforcement levels closeto the maximum allowed by Code, the established analytical procedures for reinforcedconcrete beams can underestimate the actual strength by about 15%." @default.
- W3003147727 created "2020-01-30" @default.
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- W3003147727 date "1993-01-01" @default.
- W3003147727 modified "2023-09-23" @default.
- W3003147727 title "Full testing of construction materials containingpetroleum contaminated soils" @default.
- W3003147727 doi "https://doi.org/10.7282/t3p2729h" @default.
- W3003147727 hasPublicationYear "1993" @default.
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