Enhancing the mechanical properties of an epoxy coating with rice husk ash, a green product / Mahboobeh Azadi in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 8, N° 1 (01/2011)  

[article]  inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 8, N° 1 (01/2011) . - p. 117-123 Titre : Enhancing the mechanical properties of an epoxy coating with rice husk ash, a green product Type de document : texte imprimé Auteurs : Mahboobeh Azadi, Auteur ; Mohammad Ebrahim Bahrololoom, Auteur ; Fatemeh Heidari, Auteur Année de publication : 2011 Article en page(s) : p. 117-123 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Cendres de riz et constituants Epoxydes Essai Wolff-Wilborn Essais (technologie) Pliage (mécanique) Produits naturels Revêtements:Peinture Index. décimale : 667.9 Revêtements et enduits Résumé : In this research, rice husk ash (RHA) —a carbon neutral waste product that is an abundant source of silica—was chosen as an innovative filler for epoxy paint. The influence of the RHA on different mechanical properties of the cured coatings (wear, hardness, and elongation) was investigated. Wear tests in pin-on-disc mode were carried out and followed by scanning electron microscopic observations to determine the wear mechanism for specimens with different values of carbon and silica according to their different colors as fillers for epoxy paint. Pencil hardness tests and bending tests were performed according to ASTM D3363 and ASTM D522 standards, respectively. Adding RHA (heat treated at 700°C) at two levels—10 and 20% weight fraction—to the unfilled epoxy paint increased the wear resistance, scratch resistance, and elongation of the filled coating compared to the unfilled epoxy coating. DOI : 10.1007/s11998-010-9284-z En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-010-9284-z.pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=10929 [article]

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Nanotechnology in the construction industry (Part - 1) / Harish Agrawal in PAINTINDIA, Vol. LXX, N° 9 (09/2020)  

[article]  inPAINTINDIA > Vol. LXX, N° 9 (09/2020) . - p. 113-119 Titre : Nanotechnology in the construction industry (Part - 1) Type de document : texte imprimé Auteurs : Harish Agrawal, Auteur Année de publication : 2020 Article en page(s) : p. 113-119 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Anticorrosion Béton renforcé de fibres Cendres de riz et constituants Cendres volantes Construction -- Matériaux Dioxyde de titane Nanoparticules Nanotechnologie Nanotubes Plâtres renforcés de fibres Revêtement auto-nettoyant:Peinture auto-nettoyante Revêtements protecteurs Index. décimale : 620.13 Matériaux de construction : pierre, ciment, béton, liants de Résumé : Nanotechnology in the construction industry ranked eighth out of ten most sign ificant areas of applications. Although nano-products are costly, though the research in nano-technology are limited in the field of construction areas. But it is gaining momentum with the formulation of newer products and profitable return from high value products. Nanotechnology is a very active research area all over the world. The two initial areas of research deals with the understanding of the hydration of cement particles and the use of nano-size silica particles. It believes that if cernent with nano-size particles can be manufactured, it will open up a large number of opportunities in the fields of ceramics, high strength composites and electronic applications. Portland cement could become the high tech material as compared to its current status of conventional construction material. Very few inorganic cementing materials can match the capabiIities of Portland cement in terms of cost. Note de contenu : - What is nanotechnology ? - What is a nanoparticle ? - Importance of nanotechnology - Nanotechnology and concrete - Importance of nano materials : Maincharacteristics of fly ash - Advantages of fly ash - Application of fly ash - Characteristics properties of fly ash - Titanium oxide - Carbon nanotubes (CNT) - Rice husk ash : Manufacture of rice husk ash - Rice husk ash as a supplementary binder - Nano fiber for concrete and plaster reinforcement - So what is nanotechnology ? - Coatings based on nano technology and thin films : For example protective or anti-corrosio coatings - For example self-cleaning coatings En ligne : https://drive.google.com/file/d/10Kz-JHK6soZxy5x4MVB1_PuGFdePL_OY/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=34665 [article]

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A novel adsorption method to simulate the dirt pickup performance of organic coatings / Shuxue Zhou in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 15, N° 1 (01/2018)  

[article]  inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 15, N° 1 (01/2018) . - p. 175-184 Titre : A novel adsorption method to simulate the dirt pickup performance of organic coatings Type de document : texte imprimé Auteurs : Shuxue Zhou, Auteur ; Yang Yang, Auteur ; Tao Wang, Auteur ; Hongyu Chen, Auteur ; James Bohling, Auteur ; Alvin M. Maurice, Auteur ; Limin Wu, Auteur Année de publication : 2018 Article en page(s) : p. 175-184 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Adsorption Cendres Cendres de riz et constituants Essais (technologie) Méthyltriméthoxysilane Résistance à la salissure Revêtements organiques Index. décimale : 667.9 Revêtements et enduits Résumé : The evaluation of the dirt resistance of organic coatings according to traditional accelerated methods (e.g., the standard method GB/T 9780-2013 in China) usually provides results which deviate from their real-world performance in seriously polluted environments. As an alternative, a novel adsorption method with methyltrimethoxysilane-modified rice-straw ash as the artificial dirt standard was proposed in this paper. With this method, the ash was dispersed into the air in a testing chamber and then allowed to physically adsorb to the coating, which is believed to more accurately simulate the adsorption behavior of floating particulates outdoors. Two groups of latex coatings from Dow Chemical Company were employed to evaluate the adsorption method by monitoring the changes in color, whiteness, and reflectivity. In parallel, outdoor exposure testing of these coatings was conducted. The influences of charging method, of ash type, and panel position on the testing results were carefully investigated. Multicharging of ash (9 g × 3) and parallel panels at different positions in the testing chamber are designed for the generation of repeatable results. It was demonstrated that the adsorption method basically matched the outdoor exposure results and was more predictive of real-world results than GB/T 9780-2013. Note de contenu : - EXPERIMENTAL SECTION : Materials - Preparation of standard dirt - Testing apparatus and method - Outdoor exposure testing - Characterization - RESULTS AND DISCUSSION : Preparation of standard dirt - Influence of the type of dirt - Influence of charging method of ash - Influence of testing panel position - Examination of the repeatibility of adsorption method - The feasibility of adsorption method DOI : 10.1007/s11998-017-9971-0 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-017-9971-0.pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=30110 [article]

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Strength and performance of straw ash cement mortar / Fucheng Wang in REVUE DES COMPOSITES ET DES MATERIAUX AVANCES, Vol. 29, N° 1 (02/2019)  

[article]  inREVUE DES COMPOSITES ET DES MATERIAUX AVANCES > Vol. 29, N° 1 (02/2019) . - p. 15-20 Titre : Strength and performance of straw ash cement mortar Type de document : texte imprimé Auteurs : Fucheng Wang, Auteur ; Chun Wang, Auteur ; Shujuan Yi, Auteur Année de publication : 2019 Article en page(s) : p. 15-20 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Cendres de riz et constituants Contraintes (mécanique) Flexion (mécanique) Matériaux cimentaires Matériaux cimentaires -- Propriétés mécaniques Mortier Paille Résistance à la compression Index. décimale : 620.13 Matériaux de construction : pierre, ciment, béton, liants de Résumé : This paper mainly explores the strength and performance of rice straw ash cernent mortar. Firstly, the straw ash was obtained through high-temperature calcination, and the ash formation rate was measured. Then, the straw ash was rinsed with clean water and mixed into cernent mortar test pieces. According to the mass ratio of cernent in the test pieces, the proportion of straw ash were determined as 5 %, 10 %, 15 % and 20 %, respectively. Next, the following properties of each test piece were measured, including water absorption rate, 3d and 28d flexural strength and compressive strength. On this basis, the flexural strength and compressive strength were fitted and correlated with the proportion of straw ash. The fitting formulas and correlation functions proposed in this paper lay a theoretical basis for the engineering application of straw ash cernent mortar. Note de contenu : - MATERIALS AND METHODS : Materials - Experimental methods - RESULTS AND ANALYSIS : Straw ash formation rate - Test piece water absorption rate - Strength of cement mortar - ESTABLISHMENT OF STRENGTH EQUATION OF STRAW ASH CEMENT MORTA5R TEST PIECES - Table 1 : Chemical composition of the cement - Table 2 : Mixing ratio of straw ash cement mortar - Table 3 : Ash formation rate of rice straw - Table 4 : Water absorption rate of test pieces - Table 5 : Test data of mechanical properties of test pieces DOI : https://doi.org/10.18280/rcma.290103 En ligne : https://www.iieta.org/download/file/fid/994 Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=34732 [article]

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