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Title: EXPERIENCE WITH ASTM P214 IN TESTING VIRGINIA AGGREGATES FOR ALKALI-SILICA REACTIVITY
Accession Number: 00645999
Record Type: Component
Availability: Find a library where document is available Abstract: Recently identified occurrences of concrete deterioration resulting from alkali-silica reactivity (ASR) have prompted an effort to evaluate Virginia aggregates for their susceptibility to this reaction. The aggregates thus far associated with ASR have been metamorphic rocks of varied composition and quartzose sands and gravels in which the reactive constituents are believed to be microcrystalline or strained quartz. These forms of quartz are present in many aggregates from Virginia. A review of the literature suggests that although the traditional tests (ASTM C227 and C289) for identifying aggregates susceptible to ASR are not effective with aggregates containing microcrystalline or strained quartz, ASTM P214, which is a new method, is promising. To evaluate P214's effectiveness, tests have been conducted on aggregates from Virginia, and the results are being compared with field performance and other relevant information. The results thus far indicate that expansions in P214 may be caused by both ASR and alkali-carbonate reactivity and that current P214 criteria are not suitable for aggregates in Virginia. Further experience with the method is necessary to determine whether suitable criteria can be established to discriminate between nonreactive aggregates and reactive aggregates containing microcrystalline or strained quartz.
Supplemental Notes: This paper appears in Transportation Research Record No. 1418, Performance-Related Testing and Evaluation of Characteristics of Aggregates and New Geomaterials. Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved
Monograph Title: Performance-related testing and evaluation of characteristics of aggregates and new geomaterials Monograph Accession #: 01398731
Language: English
Authors: Lane, D SPagination: p. 8-11
Publication Date: 1993
Serial: ISBN: 0309055660
Features: References
(18)
; Tables
(1)
TRT Terms: Uncontrolled Terms: Geographic Terms: Old TRIS Terms: Subject Areas: Geotechnology; Highways; I36: Aggregates
Files: TRIS, TRB
Created Date: Apr 4 1994 12:00AM
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