RESEARCH OF BUILDING MATERIALS

Service durabilityof chrysolite-cement pipes

Vestnik MGSU 3/2013
  • Zhukov Aleksey Dmitrievich - Moscow State University of Civil Engineering (National Research University) (MGSU) Candidate of Technical Sciences, Associate Professor, Department of Composite Materials Technology and Applied Chemistry, Moscow State University of Civil Engineering (National Research University) (MGSU), 26 Yaroslavskoe shosse, Moscow, 129337, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .
  • Neyman Svetlana Markovna - NO «Khrizotilovaya assotsiatsiya» Candidate of Technical Sciences, Senior Researcher, Secretary, Council for Technology and Economy, NO «Khrizotilovaya assotsiatsiya», 7 Promyshlennaya St., Asbest, Sverdlovsk Region, 624266, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .
  • Radnaeva Svetlana Zhamsoevna - East Siberian State University of Technology and Management (VSGUTU) Senior Lecturer, East Siberian State University of Technology and Management (VSGUTU), 40v Klyuchevskaya St., Ulan-Ude, 670013, Buryat Republic, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .

Pages 127-134

The authors have compiled an overview of the reasons underlying the failures of pipelines, including inadequate selection of pipe materials and their thermal insulation made with no account for the operating conditions, high rate of wear and tear of steel pipelines due to steel corrosion, high cost of protection of steel pipes from the aggressive influence of the external and internal environment, failure to implement any pipe protection actions, use of insufficient thermal protection insulation, insufficient funding causing failure to restore, restructure or upgrade heating networks.The authors have substantiated the use of chrysolite-cement pipelines within the heating networks of rural areas. Chrysolite-cement pipes may expediently substitute metal pipes in the course of construction and restructuring of pipelines. New metal-free pipelines, namely, those made of cross-linked polyethylene, glass-basalt-plastic and other composite materials, are too expensive; besides, their durability and environmental safety need to be checked.Chrysolite-cement pipes have the following advantages over steel pipes: high corrosion resistance, high resistance to hot water, low values of temperature-driven deformations preventing installation of compensators, low heat conductivity reducing the need for thermal insulation, low laboriousness of installation, low installation and maintenance costs.

DOI: 10.22227/1997-0935.2013.3.127-134

References
  1. Zhukov A.D., Neyman S.M, Babich V.A., editors. Khrizotiltsementnye stroitel’nye materialy [Chrysolite-cement Construction Materials]. Ekaterinburg, AMB Publ., 2009, 155 p.
  2. Ivanov V.V., Soldatova Yu.V., Chemyakina N.A. Rasshirenie oblastey primeneniya korotkovolnistogo khrizotila [New Areas of Application of Short-fibred Chrysolite]. Stroitel’nye materialy [Construction Materials]. 2006, no. 11, pp. 57—59.
  3. Chesnokov V.S., Babich V.A. Khrizotiltsementnye napornye truby: praktika primeneniya v teplotrassakh [Chrysolite-cement Pressure Pipes: Practical Application in Heating Mains]. Stroitel’nye materialy [Construction Materials]. 2008, no. 9, pp. 13—15.
  4. Ryskin M.V. Asbest v mirovoy ekonomike [Asbestos in the International Economy]. Moscow, Mezhdunarod. otnosheniya publ., 1969, 250 p.
  5. Chesnokov V.S., Babich V.A. Asbestotsementnye truby: pochemu ikh ignoriruyut [Asbestos-cement Pipes: Why Are They Ignored?] Prom. vedomosti [Industrial News]. 2007, no. 5–6, pp. 5—7.
  6. Neyman S.M., Vezentsev A.I., Kashanskiy S.V. O bezopasnosti asbestotsementnykh materialov i izdeliy [Safety of Asbestos-cement Materials and Products]. Moscow, OOO RI F «Stroymaterialy» publ., 2006, 64 p.
  7. Izmerov N.F., Kovalevskiy E.V. Normativnoe obespechenie kontroliruemogo ispol'zovaniya asbestosoderzhashchikh materialov v stroitel›stve [Regulatory Framework for the Controlled Use of Asbestos-based Materials in Civil Engineering]. Meditsina truda i prom. ekologiya [Occupational Medicine and Industrial Ecology]. 2004, no. 5, pp. 5—12.
  8. Sokolov P.N. Proizvodstvo asbestotsementnykh izdeliy [Manufacturing of Asbestos-cement Products]. Moscow, Vyssh. shk. publ., 1970, 288 p.
  9. Kim B.I., Litvin I.E. Zadachnik po mekhanike gruntov v truboprovodnom stroitel’stve [Problem Book on Soil Mechanics in Pipeline Engineering]. Moscow, Nedra Publ., 1989, 180 p.

Download

CHRYSOLITE-CEMENT PIPESIN HOT WATER SUPPLY NETWORKS

Vestnik MGSU 4/2013
  • Zhukov Aleksey Dmitrievich - Moscow State University of Civil Engineering (National Research University) (MGSU) Candidate of Technical Sciences, Associate Professor, Department of Composite Materials Technology and Applied Chemistry, Moscow State University of Civil Engineering (National Research University) (MGSU), 26 Yaroslavskoe shosse, Moscow, 129337, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .
  • Neyman Svetlana Markovna - NO «Khrizotilovaya assotsiatsiya» Candidate of Technical Sciences, Senior Researcher, Secretary, Council for Technology and Economy, NO «Khrizotilovaya assotsiatsiya», 7 Promyshlennaya St., Asbest, Sverdlovsk Region, 624266, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .
  • Ayurova Oyuna Badmatsyrenovna - East Siberian State University of Technology and Management (VSGUTU) Candidate of Technical Sciences, Associate Professor, East Siberian State University of Technology and Management (VSGUTU), 40v Klyuchevskaya St., Ulan-Ude, 670013, Buryat Republic, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .
  • Radnaeva Svetlana Zhamsoevna - East Siberian State University of Technology and Management (VSGUTU) Senior Lecturer, East Siberian State University of Technology and Management (VSGUTU), 40v Klyuchevskaya St., Ulan-Ude, 670013, Buryat Republic, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .

Pages 84-91

In the article, its co-authors assess different options of application of chrysolitecement pipes in hot water supply networks either in combination with or instead of steel pipes. The co-authors have proven expedient application of chrysolite-cement pipes both in the event of trenchless pipe laying, and in cases of other pipe laying methods, especially in rural areas.Permanent loads, including weight and soil pressure (q), own weight of pipes, ownrp.weight of the heat carrier, influence of temperature and humidity of the heat carrier, andinternal pressure were considered in the research into the properties and installation conditions of chrysolite-cement pipes. The research findings have proven that chrysolitecement pipelines demonstrate a 35 – 50 % safety factor in the event of subterranean trenchless pipe laying at the depth of .8+ meters, depending on the pipe diameter, types and consistency of the soil, and traffic intensity of the motor road above the pipeline.Analysis of temperature fields of a chrysolite-cement pipeline demonstrates that chrysolite-cement pipes can be laid using a simplified thermal insulation pattern due to their low heat conductivity, if the pipe wall is sufficiently thick. Boiler ash widely available in rural areas can be used for insulation purposes, or, alternatively, no thermal insulation can be used.Any works associated with the laying of pressurized chrysolite-cement pipelines are to comply with all design-related requirements. The works pre-construction assignments, excavation works, delivery, visual examination and installation of pipeline elements, thermal insulation of pipes, pipeline strength and tightness testing, thermal insulation of ring joints. Any pipes and joints are to be thoroughly examined and tested. Arrangement of hot water supply networks made of chrysolite-cement pipes is efficient in terms of their steel consumption rate, labour resources consumption rate, capex and reduced costs. The bigger the pipe diameter, the higher the efficiency of hot water supply networks made of chrysolite-cement pipes.

DOI: 10.22227/1997-0935.2013.4.84-91

References
  1. Zhukov A.D., Neyman S.M, Babich V.A., editors. Khrizotiltsementnye stroitel’nye materialy [Chrysolite-cement Construction Materials]. Ekaterinburg, AMB Publ., 2009, 155 p.
  2. Kim B.I., Litvin I.E. Zadachnik po mekhanike gruntov v truboprovodnom stroitel’stve [Problem Book on Soil Mechanics in Pipeline Engineering]. Moscow, Nedra Publ., 1989, 180 p.
  3. Avdolimov E.M., Shal’nov A.P. Vodyanye teplovye seti [Water-based Heat Supply Networks]. Moscow, Stroyizdat Publ., 1984, 288 p.
  4. Ryb’ev I.A. Stroitel’noe materialovedenie [Construction Material Science]. Moscow, Vyssh. shk. publ., 2003, 701 p.
  5. Kochelaev V.A., Shkarednaya S.A., Zyryanova T.S. Ispol’zovanie asbestotsementnykh materialov i izdeliy v stroitel’stve za rubezhom [Using Asbestos-cement Materials and Products in Construction Outside of Russia]. Stroitel’nye materialy [Construction Materials]. 2001, no. 5, pp. 28—30.
  6. Materialy Simpoziuma po asbestu dlya aziatskikh stran [Works of Asbestos Symposium for Asian Countries]. Journal of UOEN. Kitakiushu, Japan, 26–27 September, 2002, vol. 24, Supplement 2, pp. 120—122.
  7. Elovskaya L.T., Shkarednaya S.A. Asbest: mify i real’nost’ [Asbestos: Myths and Reality]. Prom. vedomosti [Industrial Bulletin]. 2007, no. 5–6, pp. 5—7.
  8. Berney I.I. Teoriya formovaniya asbestotsementnykh listov i trub [Asbestos-cement Sheets and Pipes: Casting Theory]. Moscow, Stroyizdat Publ., 1988, 289 p.
  9. Neyman S.M., Vezentsev A.I., Kashanskiy S.V. O bezopasnosti asbestotsementnykh materialov i izdeliy [Safety of Asbestos-cement Materials and Products]. Moscow, OOO RI F «Stroymaterialy» publ., 2006, 64 p.

Download

Results 1 - 2 of 2