%0 Journal Article %1 El_Hafid_2019 %A El Hafid, Kenza %A El Hafid, Hassan %D 2019 %I Elsevier BV %J Cement and Concrete Composites %K (RSM) Activation Alkaline Characterization Clay Clays Concentration Crystallography Deconvolution Design FTIR Geopolymers Humidity Hydration Kaolinite Materials Mechanical Methodology Microstructure Minerals Models NaOH Physical Polynomial Properties Regression Response Surface XRD Zeolites of spectroscopy %P 103366 %R 10.1016/j.cemconcomp.2019.103366 %T Hydrated blends of fired clay and NaOH: Influence of the processing parameters via polynomial models %U https://doi.org/10.1016%2Fj.cemconcomp.2019.103366 %V 104 %X For the purpose of promoting a viable alternative to traditional Portland cement, geopolymers were prepared by mixing thermally treated natural clay and sodium hydroxide instead of sodium silicate followed by ageing under extreme humidity for a short duration. (Micro)-structure of these binary blends was investigated using X-ray diffraction, Fourier-transform infrared spectroscopy, Scanning electron microscopy and Thermal analysis. Zeolite ZK-14 (geopolymeric product), trona (carbonation product) and nepheline-type feldspathoid were newly detected in the studied specimens. An attempt was made to predict the type of crystallized zeolites and the suitability of studied materials for potential building applications by means of empirical ternary diagrams. The simultaneous influences of parameters (NaOH concentration, time and ageing temperature) on properties (flexural strength, density, water absorption and open porosity) were assessed by referring to the response surface methodology via polynomial models. The concurrent rise of factors (NaOH concentration and time) or (temperature and time) improved the strength and density as opposed to the remaining properties. These results were discussed in sight of the (micro)-structural characterization.

@article{El_Hafid_2019, abstract = {For the purpose of promoting a viable alternative to traditional Portland cement, geopolymers were prepared by mixing thermally treated natural clay and sodium hydroxide instead of sodium silicate followed by ageing under extreme humidity for a short duration. (Micro)-structure of these binary blends was investigated using X-ray diffraction, Fourier-transform infrared spectroscopy, Scanning electron microscopy and Thermal analysis. Zeolite ZK-14 (geopolymeric product), trona (carbonation product) and nepheline-type feldspathoid were newly detected in the studied specimens. An attempt was made to predict the type of crystallized zeolites and the suitability of studied materials for potential building applications by means of empirical ternary diagrams. The simultaneous influences of parameters (NaOH concentration, time and ageing temperature) on properties (flexural strength, density, water absorption and open porosity) were assessed by referring to the response surface methodology via polynomial models. The concurrent rise of factors (NaOH concentration and time) or (temperature and time) improved the strength and density as opposed to the remaining properties. These results were discussed in sight of the (micro)-structural characterization.}, added-at = {2019-10-14T00:47:37.000+0200}, author = {El Hafid, Kenza and El Hafid, Hassan}, biburl = {https://www.bibsonomy.org/bibtex/2ded646db45ddf2cc574ffdaa1ec83814/kutuqueen}, description = { I am pleased to share with you the work done about the geopolymerization of hydrated blends of fired clay and NaOH through the link ( https://authors.elsevier.com/a/1ZNpy3Q2WYf4Zb ) provided by Elsevier service ( 50 days' free access). Please in case the link has expired and you are interested in the content of this paper, don't hesitate to send me a request via Academia, Researchgate or my e-mail adress { elhafid.kenza@gmail.com } ~ Thank you very much for your interest ~}, doi = {10.1016/j.cemconcomp.2019.103366}, interhash = {30193cb8810fe2b8261dc32dd388b7da}, intrahash = {ded646db45ddf2cc574ffdaa1ec83814}, journal = {Cement and Concrete Composites}, keywords = {(RSM) Activation Alkaline Characterization Clay Clays Concentration Crystallography Deconvolution Design FTIR Geopolymers Humidity Hydration Kaolinite Materials Mechanical Methodology Microstructure Minerals Models NaOH Physical Polynomial Properties Regression Response Surface XRD Zeolites of spectroscopy}, month = nov, pages = 103366, publisher = {Elsevier {BV}}, timestamp = {2019-10-16T00:38:59.000+0200}, title = {Hydrated blends of fired clay and {NaOH}: Influence of the processing parameters via polynomial models}, url = {https://doi.org/10.1016%2Fj.cemconcomp.2019.103366}, volume = 104, year = 2019 }