Mineralogical and Technological Characterization of Zeolites from Basin and Range as Pozzolanic Addition of Cement |
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| Authors: | Giovanna Montesano Piergiulio Cappelletti Domenico Caputo Barbara Liguori Assunta Campanile Concetta Rispoli |
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| Affiliation: | 1.Dipartimento di Scienze della Terra, dell’Ambiente e delle Risorse, University of Naples Federico II, Complesso Universitario Monte Sant’Angelo, ED. 10, Via Cintia 26, 80126 Naples, Italy; (G.M.); (P.C.); (C.R.);2.Applied Chemistry Labs-Department of Chemical, Materials and Industrial Engineering, University of Naples Federico II, 80125 Naples, Italy; (D.C.); (A.C.) |
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| Abstract: | The present paper assesses petrographic, mineralogical, chemical, and technological features of different zeolitic tuff samples from various western USA districts of the Basin and Range Province containing mainly erionite, mordenite, clinoptilolite/heulandite and phillipsite. The aim of this characterization is to evaluate the pozzolanic activity of these samples according to European normative UNI-EN 196/5 (Fratini test) to program a possible use as addition for blended cements. Petrographic and mineralogical results show that the two phillipsite-bearing tuffs have a higher theoretical Cation Exchange Capacity (CEC) than the other samples; technological characterization shows a pozzolanic behavior for all the samples but higher for the tuff samples containing phillipsite, which shows a higher reactivity with CaO. All the samples could be thus advantageously employed for the preparation of blended cements, potentially reducing CO2 emissions by 70–90%. |
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| Keywords: | zeolites blended cement pozzolanic addition |
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