2001
DOI: 10.3141/1757-18
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Characterizing Alkali-Silica Reactivity of Aggregates Using ASTM C 1293, ASTM C 1260, and Their Modifications

Abstract: Identifying the susceptibility of an aggregate to the alkali-silica reaction (ASR) before using it in concrete is one of the most efficient practices for preventing damage. ASTM C 1260 (Mortar-Bar Test) and ASTM C 1293 (Concrete-Prism Test) have been used to identify ASR-susceptible aggregates. ASTM C 1260 modifications consisted of performing the test using different NaOH solution normalities, namely, 1N, 0.75N, 0.5N, and 0.25N. ASTM C 1293 modifications consisted of increasing the storage temperature from 38… Show more

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Cited by 16 publications
(10 citation statements)
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“…The reasons for the lower mortar expansion for 0.25 N NaOH are: (a) the availability of OH -ions was not sufficient to form ASR gels [8,19,22], and (b) the threshold alkali concentration of 0.25 N (pH 13.4) was needed to initiate alkali-silica reaction [37], and only the highly reactive aggregates produced a reasonable amount of ASR-induced expansions. The mortar expansion increased with elevating solution concentration from 0.25 to 0.5 N due to the fact that, with compared to the 0.25 N NaOH, an increased number of OH -for the 0.5 N NaOH were accessible to take part in the alkali-silica reactions.…”
Section: Mortar Expansion Related To Solution Concentrationsmentioning
confidence: 99%
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“…The reasons for the lower mortar expansion for 0.25 N NaOH are: (a) the availability of OH -ions was not sufficient to form ASR gels [8,19,22], and (b) the threshold alkali concentration of 0.25 N (pH 13.4) was needed to initiate alkali-silica reaction [37], and only the highly reactive aggregates produced a reasonable amount of ASR-induced expansions. The mortar expansion increased with elevating solution concentration from 0.25 to 0.5 N due to the fact that, with compared to the 0.25 N NaOH, an increased number of OH -for the 0.5 N NaOH were accessible to take part in the alkali-silica reactions.…”
Section: Mortar Expansion Related To Solution Concentrationsmentioning
confidence: 99%
“…Among them, the ASTM C 1260 [17], commonly known as accelerated mortar bar test (AMBT), is most widely accepted method for assessing ASR [12,18] because of its short test duration (14 days after submerging the specimens in alkali solution) due to the high concentration of alkaline solution (1.0 N NaOH) and an elevated temperature of 80°C. Several parameters of ASTM C 1260, such as solution concentration [15,[19][20][21][22][23][24], cement alkali [15,19,22], water-to-cement ratio [18,19,22], aggregate size [25][26][27][28] aggregate's angularity [28] and test duration [16,[18][19][20][21][22][23][24]29] have an influence on the measured mortar expansion. Previous research studies [19,22,23,30] revealed that the solution type and concentration of ASTM C 1260 control the expansion characteristics.…”
Section: Introductionmentioning
confidence: 99%
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“…Also, the extension of ASR cracks in FRC is dependent on the fiber type, content and age of the samples as shown in Figure 3 . The dashed line in Figure 3 shows the maximum limit of aggregates expansion in a one-year concrete prism test as recommended by ASTM C 1293 [ 98 ]. Expansion above this considered to be the aggregates very highly reactive in nature.…”
Section: Deterioration Processes Affecting Fiber Reinforced Concrementioning
confidence: 99%
“…Araştırmacılar BPD ve HBPD genleşmeleri arasında güçlü korelasyonlar elde etmiş ve 60°C'lik yöntem için 56 günde %0,02 seviyesinde genleşme limiti önermiştir [12,13]. İlerleyen yıllarda farklı araştırmacılar tarafından yürütülen çalışmalar, henüz standart bir yöntem olmayan HBPD için çok çeşitli deney sürelerinin ve genleşme limitlerinin önerilmesini beraberinde getirmiştir [9,14,15]. 2010'da sonuçları yayımlanan EU "PARTNER" Projesi'nde 10 farklı Avrupa ülkesinde bulunan 22 agrega kaynağı RILEM tarafından geliştirilen test yöntemlerine tabi tutulmuştur.…”
Section: Introductionunclassified