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New method to assess teh pozzolanic reactivity of mineral admixtures by measn of pH and electrical conductivity measurements in lime: pozzolan suspensions

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New method to assess teh pozzolanic reactivity of mineral admixtures by measn of pH and electrical conductivity measurements in lime: pozzolan suspensions

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dc.contributor.author Mitsuuchi Tashima, Mauro es_ES
dc.contributor.author Soriano Martínez, Lourdes es_ES
dc.contributor.author Monzó Balbuena, José Mª es_ES
dc.contributor.author Borrachero Rosado, María Victoria es_ES
dc.contributor.author Akasaki, Jorge Luis es_ES
dc.contributor.author Paya Bernabeu, Jorge Juan es_ES
dc.date.accessioned 2015-05-27T11:38:07Z
dc.date.available 2015-05-27T11:38:07Z
dc.date.issued 2014-09
dc.identifier.issn 0465-2746
dc.identifier.uri http://hdl.handle.net/10251/50853
dc.description.abstract A very simple method based on electrical conductivity and pH measurements was proposed for assessing reactivity of pozzolans. Calcium hydroxide:pozzolan water suspensions were monitored by means of measurements of electrical conductivity and pH values. In these suspensions, Ca(OH)2 in solid state was initially present, being them, thus, saturated in this reagent. Three testing temperatures were selected (40, 50 and 60 °C). In the experiments carried out, calcium hydroxide was suspended in deionized water for yielding a lime saturated suspension. The addition of siliceous pozzolan (two types of rice husk ash RHA and two types of densified silica fume DSF were tested) to the saturated lime suspension can produce the unsaturation of the system, depending on the testing time, testing temperature and reactivity of pozzolan. When unsaturation was reached, the loss of electrical conductivity was higher than 30% and the variation of pH was higher than 0.15 units. These threshold values were selected for characterizing the reactivity of pozzolans by means of a proposed template, classifying the pozzolan in three different reactivity levels. es_ES
dc.language Inglés es_ES
dc.publisher Consejo Superior de Investigaciones Científicas (CSIC) es_ES
dc.relation.ispartof Materiales de Construcción es_ES
dc.rights Reconocimiento - No comercial (by-nc) es_ES
dc.subject Reaction es_ES
dc.subject Characterization es_ES
dc.subject Siliceous pozzolan es_ES
dc.subject Silica fume es_ES
dc.subject Rice husk ash es_ES
dc.subject.classification INGENIERIA DE LA CONSTRUCCION es_ES
dc.title New method to assess teh pozzolanic reactivity of mineral admixtures by measn of pH and electrical conductivity measurements in lime: pozzolan suspensions es_ES
dc.type Artículo es_ES
dc.identifier.doi 10.3989/mc.2014.00914
dc.rights.accessRights Abierto es_ES
dc.contributor.affiliation Universitat Politècnica de València. Instituto de Ciencia y Tecnología del Hormigón - Institut de Ciència i Tecnologia del Formigó es_ES
dc.contributor.affiliation Universitat Politècnica de València. Departamento de Ingeniería de la Construcción y de Proyectos de Ingeniería Civil - Departament d'Enginyeria de la Construcció i de Projectes d'Enginyeria Civil es_ES
dc.description.bibliographicCitation Mitsuuchi Tashima, M.; Soriano Martinez, L.; Monzó Balbuena, JM.; Borrachero Rosado, MV.; Akasaki, JL.; Paya Bernabeu, JJ. (2014). New method to assess teh pozzolanic reactivity of mineral admixtures by measn of pH and electrical conductivity measurements in lime: pozzolan suspensions. Materiales de Construcción. 64(316):32-44. doi:10.3989/mc.2014.00914 es_ES
dc.description.accrualMethod S es_ES
dc.description.upvformatpinicio 32 es_ES
dc.description.upvformatpfin 44 es_ES
dc.type.version info:eu-repo/semantics/publishedVersion es_ES
dc.description.volume 64 es_ES
dc.description.issue 316 es_ES
dc.relation.senia 283236
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