FOAMED GYPSUM MATERIALS WITH FLUORIDE ADDITIVE
https://doi.org/10.31675/1607-1859-2018-20-6-126-137
Abstract
Purpose: The aim of this work is to investigate compositions and operational procedures for gypsum foamed materials based on acid fluoride and define conditions for the formation of the foamed structure and ways to improve the strength of foamed samples. Materials/Methodology/Approach: A capacity of sulphuric acid to interact with calcium carbonate with release of carbon dioxide is laid for this research. The hallmark of this study is acid fluoride used as a recycled material in which the residual acid adsorbs on anhydrite grains. Also, liquid glass and aluminum oxide nanofibrer are added to the composition. In this research, standard procedures and physicochemical techniques are used for the detection of properties of constructional materials. X-ray diffraction and differential thermal analyses are carried out to study the chemical composition of acid fluoride. The production of heat-insulating material includes preliminary dosage of initial components (acid fluoride, liquid glass, stabilized dispersion of aluminum nanofiber, sodium carbonate and water); blending of these components during 1–2 min followed by the gypsum addition; hardening in chambers for 24 h at 40–60 °C; pouring the ready mixture in divided molds. Standard equipment can be used for this production process. Research findings: The additional use of liquid glass and aluminum oxide nanofiber provides high physical and mechanical properties of samples. The high strength of material is insured by hydration of gypsum and acid fluoride followed by the chemical reaction due to the hardening catalyst. Heat-insulating properties appear due to porosity of product achieved by the release of carbon dioxide and oxygen during the interaction between acid fluoride and sodium carbonate as well as by the dispersion of aluminum oxide nanofiber accompanied by pore formation. Liquid glass and aqueous dispersion of nanofiber are very important for the material composition. The hardness increase occurs due to the formation of calcium silicates of different valency and their hydrates and due to the addition of nanofiber stabilized by sodium hydroxide of aluminum oxide representing a specific proportion of aluminum oxide and AlOOH. As a result of nanoparticle-Ca ion interaction, calcium aluminates and hydrated aluminates form. Calcium silicates and aluminates form the main space frame for the structure of gypsum stone. Additionally, Na2SO4 hardener forms during the interaction of the blend components, i.e. the system is capable to autocatalysis. Also, the appeared non-soluble and slightly soluble products reinforce the stone structure, such that the initial, large gas release which provides low density and pore formation, does not lead to a sharp strength decrease, thereby ensuring the sufficient quality of material. When the oxide film of aluminum fiber is damaged, its violent reaction occurs with aqueous mixture components with hydrogen release. Practical implications: The obtained results can be used in construction of low-rise building and manufacturing partitions for rooms and flats. Originality: Hydration and pore formation processes are described for hardening gypsum materials based on acid fluoride. These processes allow controlling the mixture composition and properties of binding and binding-containing constructional materials. The authors suggest dependencies for control for the composition, structure and properties of composite, heat-insulating materials. The authors show that it is possible to render a targeted effect on the structure formation observed in complex additives which assist in the production of effective walling materials.
About the Authors
L. A. Anikanova
Tomsk State University of Architecture and Building.
Russian Federation
Russian Federation
PhD, A/Professor.
2, Solyanaya Sq., 634003, Tomsk.
A. I. Kurmangalieva
Tomsk State University of Architecture and Building.
Russian Federation
Russian Federation
Research Assistant.
2, Solyanaya Sq., 634003, Tomsk.
O. V. Volkova
Tomsk State University of Architecture and Building.
Russian Federation
Russian Federation
PhD, Assistant Lecturer.
2, Solyanaya Sq., 634003, Tomsk.
Yu. M. Fedorchuk
National Research Tomsk State University.
Russian Federation
Russian Federation
DSc, Professor.
36, Lenin Ave., 634050, Tomsk
References
1. Zavadskij V.F., Derjabin P.P., Kosach A.F. Tehnologija poluchenija penogazobetona [Foam and concrete technology]. Building materials. 2003. No. 6. Pp. 2–3. (rus)
2. Zavadskij V.F, Kosach A.F., Derjabin P.P. Stenovye materialy i izdelija [Wall materials and products]. Omsk, SibADI, 2005, 254 p. (rus)
3. Zavadskaja L.V. Gazogipsovye materialy s armirujushhimi voloknistymi dobavkami [Gas-gypsum materials with reinforcing fiber additives. PhD Thesis]. Novosibirsk, 2011. 17 p. (rus)
4. Anikanova L.A., Volkova O.V., Kurmangalieva A.I., Volkov K.S. Issledovanie ftorangidritovogo syr'ya dlya polucheniya kompozitsionnykh vyazhushchikh [Acid fluoride raw material for composite binder production]. Vestnik of Tomsk State University of Architecture and Building. 2010. No. 4. Pp. 160–170. (rus)
5. Redlih V.V., Kurmangalieva A.I., Mitrohina E.V., Volkova O.V., Malchieva O.V. Tehnologicheskie aspekty sozdanija vysokoporistyh struktur gipsosoderzhashhih kompozicij [Technological aspects of creating highly porous structures of gypsum-containing compositions]. Materialy IV Vserossijskoj nauchno-prakticheskoj konferencii s mezhdunarodnym uchastiem ‘Investicii, stroitel'stvo i nedvizhimost' kak material'nyj bazis modernizacii i innovacionnogo razvitija jekonomiki’ (Proc. 4th Int. Sci. Conf. ‘Investments, Construction, Real Estate as a Material Basis for Economy Modernization and Innovation’). Tomsk, 2014. Pp. 339–342. (rus)
6. Anikanova L.A., Volkova O.V., Kurmangalieva A.I., Malchieva O.V. Vlijanie nanodobavok na svojstva gipsovyh smesej [Nano-additive modification of properties of gypsum mixtures]. Materialy mezhdunarodnoj nauchnoj konferencii molodyh uchenyh ‘Perspektivnye materialy v stroitel'stve i tehnike’ (Proc. 1st All-Russ. Sci. Conf. ‘Advanced Materials and Technologies in Construction’). Tomsk, 2014. Pp. 108–114. (rus)
7. Anikanova L.A., Kurmangalieva A.I., Volkova O.V., Malchieva O.V. Issledovanie gipsosoderzhashhih vjazhushhih s nanodobavkami [Gypsum-containing binders with nano-additives]. Materialy Mezhdunarodnoj nauchnoj konferencii studentov i molodyh uchenyh: ‘Molodezh', nauka, tehnologii: novye idei i perspektivy’ (Proc. Int. Sci. Conf. ‘Youth, Science, Solutions: Ideas and Prospects’). Tomsk. 2014. Pp. 289-290. (rus)
8. Guseva I.V., Volkova O.V., Kurmangalieva A.I. Issledovanie ftorangidrita dlja poluchenija suhih stroitel'nyh smesej [Fluoride use in dry building mixtures]. Materialy V Vserossijskoj nauchno-prakticheskoj konferencii s mezhdunarodnym uchastiem ‘Investicii, stroitel'stvo i nedvizhimost' kak material'nyj bazis modernizacii i innovacionnogo razvitija jekonomiki’ (Proc. 5th Int. Sci. Conf. ‘Investments, Construction, Real Estate as a Material Basis for Economy Modernization and Innovation’). Tomsk. 2015. Pp. 273–277. (rus)
9. Anikanova L.A., Kurmangalieva A.I., Kudyakov A.I., Redlikh V.V., Molchieva A.V. Issledovanie gazogipsovykh izdelii s ispol'zovaniem ftorangidrita [Investigation of fluoride gas-gypsum products]. Mezhdunarodnyi sbornik nauchnykh trudov ‘Innovatsionnye razrabotki i novye tekhnologii v stroitel'nom materialovedenii’ (Int. Proc. ‘Innovative Developments and New Technologies in Materials Science in Construction’). Novosibirsk. 2014. Pp. 273–277. (rus)
10. Anikanova L.A., Kurmangalieva A.I., Malchieva A.V. Vliyanie nanodobavok na svoistva porizovannykh materialov [Effect of nano-additives on the properties of porous materials]. Materialy 60 universitetskoi nauchno-tekhnicheskoi konferentsii studentov i molodykh uchenykh (Proc. 60th Int. Sci. Conf. of Students and Young Scientists). Tomsk. 2014. Pp. 273–277. (rus)
11. Anikanova L.A., Kurmangalieva A.I., Rupeko K.A. Issledovanie ftorangidrita, modifitsirovannogo khimicheskimi dobavkami [Chemical additives modified with fluoride]. Materialy 60 universitetskoi nauchno-tekhnicheskoi konferentsii studentov i molodykh uchenykh (Proc. 60th Int. Sci. Conf. of Students and Young Scientists). Tomsk, 2015. Pp. 273-277. (rus)
12. Anikanova L.A., Kurmangalieva A.I., Piskareva A.T., Kazantseva V.S. Vodostoikie stenovye materialy s ispol'zovaniem angidritovykh vyazhushchikh [Waterproof wall materials using anhydrite binders]. Materialy VI Mezhdunarodnoi nauchno-prakticheskoi konferentsii (Proc. 6th Int. Sci. Conf.). Tomsk, 2016. Pp. 273–277. (rus)
13. Anikanova L.A., Kurmangalieva A.I., Kudjakov A.I., Sarkisov Yu.S., Volkova O.V. Konstrukcionno-teploizoljacionnyj material [Heat insulating construction materials]. Pat. Russ. Fed. N 2653192. 2018. 4 p. (rus)
Review
For citations:
Anikanova L.A., Kurmangalieva A.I., Volkova O.V., Fedorchuk Yu.M. FOAMED GYPSUM MATERIALS WITH FLUORIDE ADDITIVE. Vestnik Tomskogo gosudarstvennogo arkhitekturno-stroitel'nogo universiteta. JOURNAL of Construction and Architecture. 2018;(6):126-137. (In Russ.) https://doi.org/10.31675/1607-1859-2018-20-6-126-137
Views:
856
Email this article 