Zeolitized tuff in environmental friendly production of cementitious material: Chemical and mechanical characterization

Liguori, Barbara; Iucolano, Ferdinando; Gennaro, Bruno de; Marroccoli, Milena; Caputo, Domenico

doi:10.1016/j.conbuildmat.2015.09.035

Cited by 26 publications

(11 citation statements)

References 29 publications

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“…Economic development inevitably increases construction activity, which depends heavily on the production of cement. The most direct approach to reduce the CO 2 emissions associated with the manufacture of cement is to reduce cement consumption or replace cement with other pozzolanic materials (e.g., industrial by-products) with similar binding properties [1][2][3]. Non-cement blended materials can help to reduce construction costs and the negative impact of cement production on the natural environment [4,5].…”

Section: Introductionmentioning

confidence: 99%

Composite Properties of Non-Cement Blended Fiber Composites without Alkali Activator

Lin

Korniejenko

et al. 2020

Materials

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The vigorous promotion of reuse and recycling activities in Taiwan has solved a number of problems associated with the treatment of industrial waste. Considerable advances have been made in the conversion of waste materials into usable resources, thereby reducing the space required for waste storage and helping to conserve natural resources. This study examined the use of non-alkali activators to create bonded materials. Our aims were to evaluate the feasibility of using ground-granulated blast-furnace slag (S) and circulating fluidized bed co-fired fly ash (F) as non-cement binding materials and determine the optimal mix proportions (including embedded fibers) with the aim of achieving high dimensional stability and good mechanical properties. Under a fixed water/binder ratio of 0.55, we combined S and F to replace 100% of the cement at S:F ratios of 4:6, 5:5, 6:4. Polypropylene fibers (L/d = 375) were also included in the mix at 0.1%, 0.2% and 0.5% of the volume of all bonded materials. Samples were characterized in terms of flowability, compressive strength, tensile strength, water absorption, shrinkage, x-ray diffraction (XRD) and scanning electron microscope (SEM) analysis. Specimens made with an S:F ratio of 6:4 achieved compressive strength of roughly 30 MPa (at 28 days), which is the 80% the strength of conventional cement-based materials (control specimens). The inclusion of 0.2% fibers in the mix further increased compressive strength to 35 MPa and enhanced composite properties.

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Section: Introductionmentioning

confidence: 99%

Composite Properties of Non-Cement Blended Fiber Composites without Alkali Activator

Lin

Korniejenko

et al. 2020

Materials

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“…Results here reported have been obtained on a synthetic FAU-type zeolite (13X, Carlo Erba reagents) and a HEU-type zeolite, a clinoptilolite-bearing tuff coming from the Eskis ßehir region (Turkey), a calc-alkaline, lacustrine, Middle-upper Miocene volcanoclastic deposit (Emirler tuff) [28,29] (hereafter CLINO, supplied by Italiana Zeoliti). The mineralogical composition of the sample, reported elsewhere [30], shows that clinoptilolite (79 wt%), is the only zeolitic phase, with minor amount of opal-CT (15 wt%), feldspar (5 wt%), and quartz (1 wt%).…”

Section: Sample Preparation and Characterizationmentioning

confidence: 99%

Sr-, Zn- and Cd-exchanged zeolitic materials as water vapor adsorbents for thermal energy storage applications

Aprea

Gennaro

Gargiulo

et al. 2016

Applied Thermal Engineering

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“…A great deal of research has been carried out on the utilization of either natural [5][6][7][8][9] or synthetic [10][11][12][13] zeolites, in place of natural pozzolans, for manufacturing blended cements and in the preparation of a sustainable binder [14,15]. The large specific surface area, featuring an intrinsic metastability (see, e.g., [16]), gives the zeolite a good pozzolanic activity.…”

Section: Introductionmentioning

confidence: 99%

Pozzolanic Activity of Zeolites: The Role of Si/Al Ratio

et al. 2019

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A great challenge of research is the utilization of natural or synthetic zeolites, in place of natural pozzolans, for manufacturing blended cements. The difficulties of interpretation of the pozzolanic behavior of natural zeolite-rich materials and the role played by their nature and composition can be overcome by studying more simple systems, such as pure synthetic zeolites. This study aims at investigating the pozzolanic ability of isostructural zeolites with different framework compositions, such as three sodium zeolites of the faujasite (FAU) framework type: LSX, X, and Y. The pozzolanic activity has been estimated by thermogravimetry and X-ray diffraction analysis. The overall outcome of the investigation is that the zeolite structure affects its pozzolanic activity, as zeolites with similar framework densities exhibit distinct abilities to fix lime. Moreover, the framework composition is effective either from a kinetic point of view or on the total amount of fixed lime. Zeolite X appears to possess the best average features.

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Zeolitized tuff in environmental friendly production of cementitious material: Chemical and mechanical characterization

Cited by 26 publications

References 29 publications

Composite Properties of Non-Cement Blended Fiber Composites without Alkali Activator

Composite Properties of Non-Cement Blended Fiber Composites without Alkali Activator

Sr-, Zn- and Cd-exchanged zeolitic materials as water vapor adsorbents for thermal energy storage applications

Pozzolanic Activity of Zeolites: The Role of Si/Al Ratio

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