Ways of Improving the Structural Properties of Burnt Rocks of Mine Dumps and Ash-slag Waste

Author(s):  
Alexander A. Lyapin ◽  
Ivan A. Parinov ◽  
Nina I. Buravchuk ◽  
Alexander V. Cherpakov ◽  
Ol’ga V. Shilyaeva ◽  
...  
Author(s):  
Alexander A. Lyapin ◽  
Ivan A. Parinov ◽  
Nina I. Buravchuk ◽  
Alexander V. Cherpakov ◽  
Ol’ga V. Shilyaeva ◽  
...  

Author(s):  
Alexander A. Lyapin ◽  
Ivan A. Parinov ◽  
Nina I. Buravchuk ◽  
Alexander V. Cherpakov ◽  
Ol’ga V. Shilyaeva ◽  
...  
Keyword(s):  

Author(s):  
Alexander A. Lyapin ◽  
Ivan A. Parinov ◽  
Nina I. Buravchuk ◽  
Alexander V. Cherpakov ◽  
Ol’ga V. Shilyaeva ◽  
...  
Keyword(s):  

Author(s):  
Alexander A. Lyapin ◽  
Ivan A. Parinov ◽  
Nina I. Buravchuk ◽  
Alexander V. Cherpakov ◽  
Ol’ga V. Shilyaeva ◽  
...  
Keyword(s):  

Author(s):  
Alexander A. Lyapin ◽  
Ivan A. Parinov ◽  
Nina I. Buravchuk ◽  
Alexander V. Cherpakov ◽  
Ol’ga V. Shilyaeva ◽  
...  
Keyword(s):  

Author(s):  
N.I. Buravchuk ◽  
O.V. Guryanova

The article presents the results of a study of burnt rocks of mine dumps, ash and slag waste and clay raw materials for the purpose of their use in the technology of manufacturing ceramic bricks. Indicators of their quality are given. In terms of properties and composition, this raw material is close to clay. Compositions and technological modes for the manufacture of ceramic bricks using burnt rocks of mine dumps and ash and slag waste have been developed. The results of laboratory research and industrial tests are presented. The possibility of using this technogenic raw material in the technology of manufacturing ceramic bricks has been proven. The use of burnt rocks and ash and slag waste in the compositions for the manufacture of ceramic bricks can improve its quality, including strength and frost resistance. In all respects, prototypes of ceramic bricks meet the requirements of regulatory documents. The involvement of technogenic raw materials in production allows you to save part of natural raw materials, reduce the cost of products while improving their quality, and help reduce the negative impact of waste on the environment in the areas of their location.The involvement of technogenic raw materials in production allows you to save part of natural raw materials, reduce the cost of products while improving their quality, and help reduce the negative impact of waste on the environment in the areas where they are located.


Author(s):  
N.I. Buravchuk ◽  
O.V. Guryanova

On the basis of technogenic raw materials – ash and slag waste and burnt rocks of mine dumps – the compositions of fine-grained concrete were selected. The developed compositions have been tested in the manufacture of pilot batches of paving slabs. The introduction of fly ash and crushing screenings of burnt rocks into the composition of concrete improves the physical and mechanical properties of products with significant savings in cement. The applicability of the investigated technogenic raw materials in fine-grained concrete, intended for the manufacture of paving slabs and road paving elements, has been proved. Products have high indicators of physical and mechanical properties and quality.


1996 ◽  
Vol 1 (3) ◽  
pp. 200-205 ◽  
Author(s):  
Carlo Umiltà ◽  
Francesca Simion ◽  
Eloisa Valenza

Four experiments were aimed at elucidating some aspects of the preference for facelike patterns in newborns. Experiment 1 showed a preference for a stimulus whose components were located in the correct arrangement for a human face. Experiment 2 showed a preference for stimuli that had optimal sensory properties for the newborn visual system. Experiment 3 showed that babies directed their attention to a facelike pattern even when it was presented simultaneously with a non-facelike stimulus with optimal sensory properties. Experiment 4 showed the preference for facelike patterns in the temporal hemifield but not in the nasal hemifield. It was concluded that newborns' preference for facelike patterns reflects the activity of a subcortical system which is sensitive to the structural properties of the stimulus.


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