Possible modifications to the accelerated mortar bar test. Astm c126001 standard test method for potential alkali reactivity of aggregates mortarbar method. Astm c1567 standard test method for determining the. As soon as the transaction is completed, your astm standards subscription will be ready for access. Citeseerx dht 50 effect of permeability on astm c 1260. Evaluation of alkali silica reactivity asr mortar bar testing astm c1260 and c1567 at 14 days and 28 days alkali silica reaction asr is a chemical reaction between. Petrographic examination can conclusively identify asr. Astmc150 standard specification for portland cement. When excessive expansions see appendix x1 are observed, it is.
Oh solution, the alkali content of the cement is not a significant factor in affecting expansions. Effect of portland cement fineness on astm c1260 expansion. Astm e1260 032015 standard test method for determining liquid drop size characteristics in a spray using optical nonimaging lightscattering instruments. Concrete technology evaluation of alkali silica reactivity. In the modified astm c 1260 test, the li and na distributions of the mortar containing glass immersed in 100% li solution were found to be similar to that of the mortars with inert sand. Read na and li ion diffusion in modified astm c 1260 test by magnetic resonance imaging mri, cement and concrete research on deepdyve, the largest online rental service for scholarly research with thousands of academic publications available. Astm c1260 standard test method for potential alkali. Influence of cement alkalis on mortar expansion of astm c 1260. Evaluation of modified astm c 1260 accelerated mortar bar. The results show that mortarbar expansion was promoted with increased cement fineness regardless of clinker alkali, aggregate reactivity, or soak solution normality. Citeseerx document details isaac councill, lee giles, pradeep teregowda. The alkali content of cement is not a significant factor in affecting the expansion. Stanton, began his research on a few of these structures and found an expansive reaction between cement and aggregate taking place.
Astm c126014, standard test method for potential alkali reactivity of aggregates mortarbar method, astm international, west conshohocken, pa, 2014. Astm c 1260 01 pdf free download february 19, 2019 astm c comments. Additionally, the procedure was modified to include a different curing regime, a high and a lowalkali cement, a lower wcm, and alkali hydroxide solutions of lower normality. The cement covered by this specification shall only contain the following ingredients. This test is similar astk c with a testing period d1260 14 days. Access astm standards from any browser on your computer, tablet or smart phone. For the tests according to astm c 1260 the highdensity.
The standard astm c 1260 method was used for evaluating potential reactivity of the aggregate in different cementitious mixtures. Concrete technology evaluation of alkali silica reactivity asr mortar bar testing astm c1260 and c1567 at 14 days and 28 days pca durability subcommittee alkali silica reaction asr is a chemical reaction between certain reactive minerals in some. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. Standard test method for potential alkali reactivity of aggregates mortarbar method1 this standard is issued under the. Alkalisilica reaction in portland cement concrete the university. Whereas, a distinctive na distribution profile was established when mortar was. No other units of measurement are included in this standard. Astm c126007, standard test method for potential alkali reactivity of aggregates mortarbar method, astm international, west conshohocken, pa, 2007. When this test method refers to combinedunit standards, the selection of the measurement systems is at the users discretion. Astm c1260 07 standard test method for potential alkali. Standard practice for installation of mineral fiber batt. Standard test method for estimating electromigration median timetofailure and sigma of integrated circuit metallizations metric1 this standard is issued under the. Alkalicarbonate reactive avoid reactive components or do not use alkalisilica reactive take preventive measures or do not use nonreactive accept for use no precautionary measures necessary no asr acr no concrete prism test, astm c 1293 is.
This standard is issued under the fixed designation c. It is based on the nbri accelerated test method 14. Na and li ion diffusion in modified astm c 1260 test by. C 1260 test method for potential alkali reactivity of aggregates mortarbar method3 c 1293 test method for concrete aggregates by determination of.
Estimated minimum level of scm required to suppress 2year expansion in astm c1293. Note 1the material described in this specification may be used for blending with portland cement to. Pdf accelerated laboratory testing for alkalisilica reaction. Astm c1260 14 standard test method for potential alkali. Redline standard test method for potential alkali reactivity of aggregates mortarbar method from sai global. These plots again illustrate that the initial permeability of the. Characterizing alkalisilica reactivity of aggregates. Astm c 12601567 expansion, % standard astm c 1567 cured at 38c for 28 days figure 2 astm c 12601567 expansion results figures 3 and 4 are plots of the astm c 12601567 expansions versus permeability results for each cement and curing method.
Appendix c modified astm c 1260 test method to evaluate. A number in parentheses indicates the year of last reapproval. Astm c126014 standard test method for potential alkali. Astm c1260 is a screening test and is known to provide both false positives that is, classifying an aggregate. Astm c109, astm c150, astm c151, astm c295, astm c305, astm c490, astm c511, astm c670, astm c856, astm d1193, astm e11 potential alkali reactivity of aggregates mortarbar method basic equipment set.
Combinations of cementitious materials and aggregate 1, also known as the accelerated mortarbar test ambt, is currently used by numerous agencies as a method to determine the minimum dosage of supplementary cementing material needed to mitigate alkalisilica reaction. Astm c potential alkali reactivity of aggregates ctlgroup. Potential alkali reactivity of aggregates mortarbar. Two gang prism mould 25x25x285 mm to astm this mould is the same used for the expansion of portland cement with the high pressure autoclave, conforming to astm c151 and astm c490.
Type of reaction is the expansion due to acr or asr. This test method permits detection, within 16 days, of the potential for deleterious alkalisilica reaction of aggregate in mortar bars. This specification covers eight types of portland cement. C 20 99 standard practice for installation of mineral fiber batt and blanket thermal insulation for light frame construction1 this standard is issued under the. What we do know, however, is important for precasters to understand. They required astm c1260 testing, which we completed and failed. Last previous edition approved in 2005 as c 1260 05a. Enter now originally approved in last previous edition approved in as c 05a. Asr mortar bar testing astm c1260 and c1567 mafiadoc. Lithium compounds have also been used, but they may be costprohibitive and limited in availability. Astmc1260 standard test method for potential alkali. The methodology presented in this document is based largely up on some modifications to the procedure that is established in the standard astm c 1260 test. Metal atoms lose the electron, or electrons, in their highest energy level and become positively charged ions. Accelerated laboratory testing for alkalisilica reaction using.
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