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Content available remote Quality of pine sawn material coming from selected natural forest regions
Krzosek S., Burawska-Kupniewska I., Mańkowski P., Grześkiewicz M., Mazurek A.
Annals of Warsaw University of Life Sciences - SGGW. Forestry and Wood Technology
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2018
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No. 104
381--385
EN
Within the project it is planned to develop new resource-, energy-saving and biodegradable composites of wood and of products of solid wood for construction, furniture and other applications. Additionally undertaken actions fit in the development of new techniques and technologies of recycling wood products, utilization of by-products and recovered wood. The research phase coordinated by Faculty of Wood Technology SGGW concerns the analysis of the pine wood quality, coming from selected natural forest regions of Poland. The basic indicators of the wood technical value is its strength class, which will be determined visually (by strength grading by visual method) and by destructive tests carried out using a universal testing machine. On the basis of these activities, the impact of wood origin, technical quality and dimensions (cross-section and length) on the applicability in structural elements will be determined.
2
Content available remote Pracownia Grześkiewiczów z ceramiką od trzech pokoleń
Grześkiewicz M., Grześkiewicz D., Rydzyńska M.
Szkło i Ceramika
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2015
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R. 66, nr 1
3--5
PL
Lech Grześkiewicz wraz z żoną Heleną, a później także synem Piotrem, stworzyli unikatowy warsztat ceramiki artystycznej. Wywodzące się z tej pracowni dzieła, w przeważającej mierze w formach monumentalnych, wchodziły w skład ważnych realizacji XX wieku. W 2010 r. dwie córki Piotra – Dorota i Malwina odziedziczyły pracownię i postanowiły kontynuować ceramiczną działalność, tworząc swoją markę Grześkiewicz Design Studio.
3
Content available remote Mediolan stolica designu. Relacja z targów wzornictwa przemysłowego
Grześkiewicz M., Grześkiewicz D.
Szkło i Ceramika
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2014
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R. 65, nr 3
40--43
4
Content available remote Local reinforcement of naturally defected structural lumber
Burawska I., Jachowicz P., Zbieć M., Grześkiewicz M.
Annals of Warsaw University of Life Sciences - SGGW. Forestry and Wood Technology
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2014
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No. 87
25--34
EN
Local reinforcement of naturally defected structural lumber. Paper presents local reinforcement of structural lumber, reducing negative impact of natural wood defects (especially knots), on strength parameters. Local repair engineering allows usage of structural members of decreased strength caused by natural defects, which was previously impossible because of legal regulations and risk of collapse. Strengthening procedures may also be used in existing, especially overloaded structures, renewing their initial strength and load capacity. Effectiveness of local reinforcement was determined by analysis of load capacity and deformation. Glass and carbon fibre composites were used as reinforcing materials. Various shapes of local reinforcement were tested, while maintaining constant length of strengthening in the tension zone of bent element. All tested types of reinforcement showed statistically significant increase in MOR and ultimate force. The highest strength gain was reached with X-shape reinforcement. Statistically significant MOE increase was obtained for X-shape glass fabric reinforcement (315g/m2 and 385g/m2 basis weight).
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