Pub Date : 2019-03-05DOI: 10.18664/1994-7852.183.2019.169875
A. Atynian, K. Bukhanova, L. Trykoz, S. Kamchatnaya, O. Pustovoitova
{"title":"PRETREATMENT IMPACT ON VERMICULITE BURN TEMPERATURE","authors":"A. Atynian, K. Bukhanova, L. Trykoz, S. Kamchatnaya, O. Pustovoitova","doi":"10.18664/1994-7852.183.2019.169875","DOIUrl":"https://doi.org/10.18664/1994-7852.183.2019.169875","url":null,"abstract":"","PeriodicalId":183715,"journal":{"name":"Collection of scientific works of the Ukrainian State University of Railway Transport","volume":"103 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124049394","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-12-26DOI: 10.18664/1994-7852.182.2018.160129
Galina Vladimirovna Ahramenko, T. Dubrovskaya
{"title":"FEATURES OF TRAINING MOVEMENT OF TRAINS ON RAILWAY LINES OF INTERREGIONAL COMMUNICATION","authors":"Galina Vladimirovna Ahramenko, T. Dubrovskaya","doi":"10.18664/1994-7852.182.2018.160129","DOIUrl":"https://doi.org/10.18664/1994-7852.182.2018.160129","url":null,"abstract":"","PeriodicalId":183715,"journal":{"name":"Collection of scientific works of the Ukrainian State University of Railway Transport","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-12-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130026122","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-12-26DOI: 10.18664/1994-7852.182.2018.159929
A. Plugin, S. Miroshnichenko, A. Zvierieva, Ivan Reznichenko
{"title":"DEFINITIVE PROPERTIES OF GROUND-POLYMER COMPOSITE: METHOD OF EXPERIMENTAL RESEARCH","authors":"A. Plugin, S. Miroshnichenko, A. Zvierieva, Ivan Reznichenko","doi":"10.18664/1994-7852.182.2018.159929","DOIUrl":"https://doi.org/10.18664/1994-7852.182.2018.159929","url":null,"abstract":"","PeriodicalId":183715,"journal":{"name":"Collection of scientific works of the Ukrainian State University of Railway Transport","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-12-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129022679","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-12-26DOI: 10.18664/1994-7852.182.2018.159768
Dmitriy Demidov
{"title":"ВИВЧЕННЯ ВПЛИВУ МІНЕРАЛЬНИХ НАПОВНЮВАЧІВ НА ВОГНЕЗАХИСНІ ХАРАКТЕРИСТИКИ ВОДНО-ДИСПЕРСІЙНИХ ЛАКОФАРБОВИХ ПОКРИТТІВ","authors":"Dmitriy Demidov","doi":"10.18664/1994-7852.182.2018.159768","DOIUrl":"https://doi.org/10.18664/1994-7852.182.2018.159768","url":null,"abstract":"","PeriodicalId":183715,"journal":{"name":"Collection of scientific works of the Ukrainian State University of Railway Transport","volume":"239 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-12-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132394828","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-12-26DOI: 10.18664/1994-7852.182.2018.159543
A. Mozgovuy
{"title":"PROBABILISTIC RELIABILITY ASSESSMENT OF GATEWAY HEADS BY THE CRITERIA OF STABILITY AGAINST DISPLACEMENT ON THE EXAMPLE OF HYDRO SCHEMES OF THE DNIEPER CASCADE","authors":"A. Mozgovuy","doi":"10.18664/1994-7852.182.2018.159543","DOIUrl":"https://doi.org/10.18664/1994-7852.182.2018.159543","url":null,"abstract":"","PeriodicalId":183715,"journal":{"name":"Collection of scientific works of the Ukrainian State University of Railway Transport","volume":"60 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-12-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127150706","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-12-26DOI: 10.18664/1994-7852.182.2018.159703
R. F. Runova, V. Gots, I. Rudenko, O. Petropavlovskyi, O. Konstantynovskyi, O. Lastivka
. Functionality of mortar and concrete mixes is regulated by surfactants, which act as plasticizers. The molecular structure of these admixtures can be changed during hydration of alkali-activated cements (AAC). The objective was to determine the chemical nature of plasticizers effective for property modification of mortars and concretes based on AACs with changing content of granulated blast furnace slag from 0 to 100 %. The admixtures without ester links become more effective than polyesters when content of alkaline component increase. The admixtures effective in high alkaline medium were used in dry mixes for anchoring (consistency of mortar 150 mm by Vicat cone; 1 d tensile strength in bending / compressive strength of mortar 6.6 /30.6 MPа) and in ready-mixed concretes (consistency class changed from S1 to S3, S4 with consistency safety during 60 min; 3 d compressive strength of modified concrete was not less than the reference one without admixtures).
{"title":"THE EFFICIENCY OF PLASTICIZING SURFACTANTS IN ALKALI-ACTIVATED CEMENT MORTARS AND CONCRETES","authors":"R. F. Runova, V. Gots, I. Rudenko, O. Petropavlovskyi, O. Konstantynovskyi, O. Lastivka","doi":"10.18664/1994-7852.182.2018.159703","DOIUrl":"https://doi.org/10.18664/1994-7852.182.2018.159703","url":null,"abstract":". Functionality of mortar and concrete mixes is regulated by surfactants, which act as plasticizers. The molecular structure of these admixtures can be changed during hydration of alkali-activated cements (AAC). The objective was to determine the chemical nature of plasticizers effective for property modification of mortars and concretes based on AACs with changing content of granulated blast furnace slag from 0 to 100 %. The admixtures without ester links become more effective than polyesters when content of alkaline component increase. The admixtures effective in high alkaline medium were used in dry mixes for anchoring (consistency of mortar 150 mm by Vicat cone; 1 d tensile strength in bending / compressive strength of mortar 6.6 /30.6 MPа) and in ready-mixed concretes (consistency class changed from S1 to S3, S4 with consistency safety during 60 min; 3 d compressive strength of modified concrete was not less than the reference one without admixtures).","PeriodicalId":183715,"journal":{"name":"Collection of scientific works of the Ukrainian State University of Railway Transport","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-12-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131967683","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-12-26DOI: 10.18664/1994-7852.182.2018.160515
Sergiy Miamlyn, V. Skalozub, L. Muradian
{"title":"ADAPTIVE BAYESIAN MODELS FOR EVALUATING THE INDICATORS OF THE RELIABILITY OF FREIGHT CARS ON THE STAGES OF THE LIFE CYCLE","authors":"Sergiy Miamlyn, V. Skalozub, L. Muradian","doi":"10.18664/1994-7852.182.2018.160515","DOIUrl":"https://doi.org/10.18664/1994-7852.182.2018.160515","url":null,"abstract":"","PeriodicalId":183715,"journal":{"name":"Collection of scientific works of the Ukrainian State University of Railway Transport","volume":"153 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-12-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131582796","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-11-27DOI: 10.18664/1994-7852.181.2018.156456
О О Коробко, В М Вировой, Володимир Геннадійович Суханов, Юрій Орестович Закорчемний
{"title":"СТІЙКІСТЬ БЕТОНІВ ПРИ ПЕРІОДИЧНИХ ЗОВНІШНІХ ВПЛИВАХ","authors":"О О Коробко, В М Вировой, Володимир Геннадійович Суханов, Юрій Орестович Закорчемний","doi":"10.18664/1994-7852.181.2018.156456","DOIUrl":"https://doi.org/10.18664/1994-7852.181.2018.156456","url":null,"abstract":"","PeriodicalId":183715,"journal":{"name":"Collection of scientific works of the Ukrainian State University of Railway Transport","volume":"139 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116371302","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-11-27DOI: 10.18664/1994-7852.181.2018.156497
Вікторія Євгенівна Волкова
{"title":"REFINEMENT OF DYNAMIC MODELS OF THE ROD SYSTEMS","authors":"Вікторія Євгенівна Волкова","doi":"10.18664/1994-7852.181.2018.156497","DOIUrl":"https://doi.org/10.18664/1994-7852.181.2018.156497","url":null,"abstract":"","PeriodicalId":183715,"journal":{"name":"Collection of scientific works of the Ukrainian State University of Railway Transport","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121041442","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-11-27DOI: 10.18664/1994-7852.181.2018.156307
Павло Володимирович Ковтун, Тетяна Олексіївна Дубровська
acceleration – a аа , m/s. For passenger trains a аа is assumed equal to 0.7 m/s 2 . This criterion is a characteristic of the smooth running and the condition of riding comfort. You can increase the speed in curves in several ways: for example, by increasing the elevation of the outer rail, by raising the rate of unprecedented acceleration, etc. The first option requires lengthening the transition curves and re-laying the track, which is expensive and not always possible. In particular, it is difficult to do on lines with intensive cargo transportation. The second solution to the problem has much more opportunities to be realized. The article considers one of the options for increasing the speed of passing curves by increasing the permissible limit of the unrestricted acceleration to 0.9 m/s 2 . Experimental studies have established that the long-term and repeated impact of an unprecedented centrifugal acceleration up to 0.9 m/s 2 inclusive, most people tolerate satisfactorily, while the speed of passenger trains can be increased by 10-20 km/h depending on from the radius of the curvilinear section of the path. Consequently, the rate of passage of existing curves will change upwards with a minimum investment. In this case, a change in the magnitude of the outstanding acceleration in a large direction should not be accompanied by the deterioration of the passengers. If this condition is met, there is an adjustment of the scientific and technical documentation existing on the Belarusian Railways.
加速度- a, m/s。对于客运列车，假设a = 0.7 m/s 2。这一标准体现了车辆行驶的平顺性和乘坐的舒适性。你可以通过几种方式来提高弯道的速度:例如，通过增加外轨的高度，通过提高前所未有的加速度等。第一种选择需要延长过渡曲线并重新铺设轨道，这是昂贵的，而且并不总是可行的。特别是在货物运输密集的航线上很难做到。问题的第二个解决方案有更多实现的机会。本文考虑了增加通过弯道速度的一种选择，即将不受限制加速度的允许极限提高到0.9 m/s 2。实验研究已经确定，长期和反复的影响，前所未有的离心加速度高达0.9米/秒2包括，大多数人的容忍令人满意，而旅客列车的速度可以提高10-20公里/小时取决于从曲线路段的半径。因此，现有曲线的通过率将以最小的投资向上变化。在这种情况下，在大方向上的突出加速度的大小的变化不应该伴随着乘客的恶化。如果满足这一条件，将对白俄罗斯铁路现有的科学和技术文件进行调整。
{"title":"ANALYSIS OF THE INFLUENCE OF AN ABSOLUTE ACCELERATION ON THE SPEED OF MOVEMENT OF PASSENGER TRAINS","authors":"Павло Володимирович Ковтун, Тетяна Олексіївна Дубровська","doi":"10.18664/1994-7852.181.2018.156307","DOIUrl":"https://doi.org/10.18664/1994-7852.181.2018.156307","url":null,"abstract":"acceleration – a аа , m/s. For passenger trains a аа is assumed equal to 0.7 m/s 2 . This criterion is a characteristic of the smooth running and the condition of riding comfort. You can increase the speed in curves in several ways: for example, by increasing the elevation of the outer rail, by raising the rate of unprecedented acceleration, etc. The first option requires lengthening the transition curves and re-laying the track, which is expensive and not always possible. In particular, it is difficult to do on lines with intensive cargo transportation. The second solution to the problem has much more opportunities to be realized. The article considers one of the options for increasing the speed of passing curves by increasing the permissible limit of the unrestricted acceleration to 0.9 m/s 2 . Experimental studies have established that the long-term and repeated impact of an unprecedented centrifugal acceleration up to 0.9 m/s 2 inclusive, most people tolerate satisfactorily, while the speed of passenger trains can be increased by 10-20 km/h depending on from the radius of the curvilinear section of the path. Consequently, the rate of passage of existing curves will change upwards with a minimum investment. In this case, a change in the magnitude of the outstanding acceleration in a large direction should not be accompanied by the deterioration of the passengers. If this condition is met, there is an adjustment of the scientific and technical documentation existing on the Belarusian Railways.","PeriodicalId":183715,"journal":{"name":"Collection of scientific works of the Ukrainian State University of Railway Transport","volume":"120 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122521043","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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