The proceedings of the 13th international conference "Modern Building Materials, Structures and Techniques" (MBMST 2019)最新文献

Chemical and physical investigations of historic mortars in St. John’s Church (Cesis, Latvia) 圣约翰教堂历史迫击炮的化学和物理研究(拉脱维亚Cesis)

The proceedings of the 13th international conference "Modern Building Materials, Structures and Techniques" (MBMST 2019) Pub Date : 2019-12-03 DOI: 10.3846/mbmst.2019.034

I. Kiriloviča, Margarita Karpe

引用次数: 2

Low emission hell in Polish cities – how to get rid of it through technical solutions applied in single family houses? 波兰城市的低排放地狱——如何通过应用于单户住宅的技术解决方案摆脱它?

The proceedings of the 13th international conference "Modern Building Materials, Structures and Techniques" (MBMST 2019) Pub Date : 2019-12-03 DOI: 10.3846/mbmst.2019.058

Dominika Dawiec, G. Ginda

{"title":"Low emission hell in Polish cities – how to get rid of it through technical solutions applied in single family houses?","authors":"Dominika Dawiec, G. Ginda","doi":"10.3846/mbmst.2019.058","DOIUrl":"https://doi.org/10.3846/mbmst.2019.058","url":null,"abstract":"Air in Polish cities belongs to the most polluted in Europe due to numerous causes e.g. high volume of road\u0000traffic, inefficient road infrastructure, the utilisation of environment unfriendly vehicle propulsion. However, the culmination of poor air problem noticeably occurs in winter as a result of the need for supplying buildings with a great\u0000amount of heat energy to defy influence of severe climate conditions. One of the most important causes for such situation deals with the application of solid fuel-based heat sources for heating buildings. The widespread burning of cheap\u0000coal in outdated home stoves results in producing smoke rife that includes carcinogens like dioxins and benzo(a)pyrene, as well as the small sooty particles that are strongly linked to heart disease, respiratory diseases and other\u0000sickness. Economical and social reasons make the application of such energy sources popular among single family\u0000house owners. Popularity of single family houses in Polish cities thus makes air pollution problem even more serious.\u0000Therefore, the effectiveness of selected solutions which would hopefully help to limit low pollution emission are discussed in the paper. They correspond well to current Polish government air improvement initiatives towards the improvement of air quality in Polish cities.","PeriodicalId":169478,"journal":{"name":"The proceedings of the 13th international conference \"Modern Building Materials, Structures and Techniques\" (MBMST 2019)","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125166788","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}

引用次数: 1

Qualitative parameters of indoor lighting, impact on quality of life 室内照明的定性参数，影响生活质量

The proceedings of the 13th international conference "Modern Building Materials, Structures and Techniques" (MBMST 2019) Pub Date : 2019-12-03 DOI: 10.3846/mbmst.2019.016

Ņikita Kočanovs, Raja Kočanova, I. Geipele

引用次数: 0

Initial results of local strength analysis of a fiber concrete plate by 4-point bending tests 纤维混凝土板四点弯曲局部强度分析初步结果

The proceedings of the 13th international conference "Modern Building Materials, Structures and Techniques" (MBMST 2019) Pub Date : 2019-12-03 DOI: 10.3846/mbmst.2019.116

O. Goidyk, H. Herrmann

{"title":"Initial results of local strength analysis of a fiber concrete plate by 4-point bending tests","authors":"O. Goidyk, H. Herrmann","doi":"10.3846/mbmst.2019.116","DOIUrl":"https://doi.org/10.3846/mbmst.2019.116","url":null,"abstract":"The analysis of the post-cracking behavior of a large plate cast of fiber concrete shows a large variability due\u0000to the fiber alignment and dispersion. Therefore, one can expect, that the bending strength and other material parameters\u0000depend on the position in the plate. This means that the position the samples for testing are taken from may play a\u0000significant role in assessing the mechanical properties and strength of composite materials. Often, the investigation of\u0000fiber concrete properties have been performed by testing small size beams. The results can be influenced by the boundary\u0000restrictions, such as wall-effect, which influences the fiber distribution. In this study the four-point bending strength of\u0000beams cut out of a large plate was investigated, the results represent the local strength of the plate in this particular place.\u0000The fiber orientation and distribution have been evaluated by X-ray Computed Tomography and Image Analysis\u0000Method. The results of the experiments have shown that the position of the beam inside of a large-size plate has a strong\u0000influence on the mechanical properties and post-cracking behavior. The analysis of the obtained outcomes proposes the\u0000following conclusions: the beams that were located near the edges of the formwork have shown a strong, strain-hardening behavior, and the beams that were located on the way of the casting bucket (a zone of the high turbulence/perturbation/disturbance) have shown a weak, strain-softening behavior.","PeriodicalId":169478,"journal":{"name":"The proceedings of the 13th international conference \"Modern Building Materials, Structures and Techniques\" (MBMST 2019)","volume":"61 5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126769084","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}

引用次数: 1

Shear resistance of clamped deck slabs assessed using design equations and FEM analysis 用设计方程和有限元分析方法评定了夹紧板的抗剪性能

The proceedings of the 13th international conference "Modern Building Materials, Structures and Techniques" (MBMST 2019) Pub Date : 2019-12-03 DOI: 10.3846/mbmst.2019.087

A. Vidakovic, J. Halvonik

{"title":"Shear resistance of clamped deck slabs assessed using design equations and FEM analysis","authors":"A. Vidakovic, J. Halvonik","doi":"10.3846/mbmst.2019.087","DOIUrl":"https://doi.org/10.3846/mbmst.2019.087","url":null,"abstract":"Reinforced concrete (RC) slabs without shear reinforcement are commonly used in the existing bridge\u0000structures. An ability of RC slabs to distribute the concentrated loads due to the wheel pressure in transverse direction\u0000is an important property for their verification. The aim of this paper is to investigate the effect of redistribution of\u0000shear forces and bending moments on the load carrying capacity of RC slabs subjected to concentrated loads. Two\u0000methods of the assessment are used: simplified analytical formulations and linear finite element analysis (LFEA). The\u0000obtained results are consequently compared with the test results taken from three experimental campaigns. The analyses show big differences among the results obtained from the simplified analytical methods that are based on the design equations introduced in the relevant standards. Improved methods, such as LFEA combined with analytical\u0000post-processing method, reflect the structural behaviour in a better way and provide more accurate load-bearing capacity prediction of the bridge deck slabs.","PeriodicalId":169478,"journal":{"name":"The proceedings of the 13th international conference \"Modern Building Materials, Structures and Techniques\" (MBMST 2019)","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114041114","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}

引用次数: 2

Global sensitivity analysis of failure probability caused by fatigue crack propagation 疲劳裂纹扩展失效概率的全局敏感性分析

The proceedings of the 13th international conference "Modern Building Materials, Structures and Techniques" (MBMST 2019) Pub Date : 2019-12-03 DOI: 10.3846/mbmst.2019.054

Z. Kala

{"title":"Global sensitivity analysis of failure probability caused by fatigue crack propagation","authors":"Z. Kala","doi":"10.3846/mbmst.2019.054","DOIUrl":"https://doi.org/10.3846/mbmst.2019.054","url":null,"abstract":"The probability of failure of a load bearing steel member is investigated using a new type of global sensitivity analysis subordinated to contrasts. The main objective of the probability-oriented sensitivity analysis is structural\u0000reliability. The structural reliability methodology uses random variables as inputs. The subject of interest is the identification\u0000of those random variables that are most important when the limit state of a steel bridge member is reached. The limit state is\u0000defined by the occurrence of brittle fracture, which results from stress changes caused by multiple repeated loads. The propagation of a single-edge crack from initial to critical size is analysed using linear fracture mechanics. The failure probability\u0000and sensitivity indices are calculated using sampling-based methods. The sensitivity indices are estimated using double-nested-loop simulation of the Latin Hypercube Sampling method. New findings indicate that interaction effects among\u0000input variables strongly influence the probability of failure especially at the beginning of the operating period.","PeriodicalId":169478,"journal":{"name":"The proceedings of the 13th international conference \"Modern Building Materials, Structures and Techniques\" (MBMST 2019)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129515548","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}

引用次数: 0

Selection criteria for evaluating contractors of sgraffito technique in cultural heritage buildings 文物建筑涂鸦技术承建商评价标准

The proceedings of the 13th international conference "Modern Building Materials, Structures and Techniques" (MBMST 2019) Pub Date : 2019-12-03 DOI: 10.3846/mbmst.2019.105

Žydrūnė Morkūnaitė

{"title":"Selection criteria for evaluating contractors of sgraffito technique in cultural heritage buildings","authors":"Žydrūnė Morkūnaitė","doi":"10.3846/mbmst.2019.105","DOIUrl":"https://doi.org/10.3846/mbmst.2019.105","url":null,"abstract":"Sgraffito is a historical decorative technique applied in walls. This decoration could be seen in different\u0000European cities or villages. Nowadays, this decoration technique is almost disappeared because of decomposition,\u0000inexperience or lack of knowledge. Moreover, the preservation and restoration of sgrafitto technique is the most\u0000challenging and important task of cultural heritage buildings’ preservation. Therefore, the preservation of sgraffito\u0000depends not only the historic and architectural knowledge, studies or conservation projects of the cultural heritage\u0000buildings, but also demands the experience, proper qualification and knowledge of contractor. This paper presents\u0000criteria set for selecting sgraffito techniques’ contractor of heritage buildings. The study determines methods, set of\u0000criteria for sgraffito technique’s contractor selection, overview of sets the assessment criteria of selecting contractor.\u0000The research applies the Analytic Hierarchy Process method (AHP), seeking to determine the critical criteria and to\u0000get the weighting for each criterion.","PeriodicalId":169478,"journal":{"name":"The proceedings of the 13th international conference \"Modern Building Materials, Structures and Techniques\" (MBMST 2019)","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129657547","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}

引用次数: 0

Analysis of the impact of water flow rate of selected Turbo type nozzle on the distribution of sprinkling intensity 分析了选用的涡轮喷嘴的流量对喷淋强度分布的影响

The proceedings of the 13th international conference "Modern Building Materials, Structures and Techniques" (MBMST 2019) Pub Date : 2019-12-03 DOI: 10.3846/mbmst.2019.076

J. Gałaj, T. Drzymała, Adam Pełech, Ritoldas Šukys

{"title":"Analysis of the impact of water flow rate of selected Turbo type nozzle on the distribution of sprinkling intensity","authors":"J. Gałaj, T. Drzymała, Adam Pełech, Ritoldas Šukys","doi":"10.3846/mbmst.2019.076","DOIUrl":"https://doi.org/10.3846/mbmst.2019.076","url":null,"abstract":"In the work, the distribution of the sprinkling intensity for a selected nozzle with the trade name Turbomatic\u0000was tested and analysed. The device meets Polish legal requirements, has a CNBOP approval certificate and is classified\u0000as a TURBO type nozzle. The research was aimed at extending the knowledge about spray jets generated by nozzles, in\u0000particular analysing the impact of water flow rate on selected parameters of the sprinkling surface. These dependencies\u0000can in practice save water and more effectively extinguish during rescue and firefighting operations. The tests were\u0000carried out in the laboratory of the Rescue and Fire-Fighting Equipment of the Main School of Fire Service partly in\u0000field conditions. Two different water flow rates of 200 and 400 dm3/min were assumed at a set operating pressure at the\u0000nozzle outlet of 0.4 MPa. The position and methodology of conducted research was discussed. Selected results were\u0000presented in tabular and graphical form. Their analysis was carried out and conclusions were made based on it. They\u0000shows that the flow rate of the nozzle has a significant impact on sprinkling surface parameters such as: its size and\u0000shape, range projection, maximum value of sprinkling intensity, location of maximum, etc.","PeriodicalId":169478,"journal":{"name":"The proceedings of the 13th international conference \"Modern Building Materials, Structures and Techniques\" (MBMST 2019)","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130673127","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}

引用次数: 2

The influence of milling technology on the crystallite size and granulometry of tricalcium aluminate 磨矿工艺对铝酸三钙晶粒尺寸和粒度的影响

The proceedings of the 13th international conference "Modern Building Materials, Structures and Techniques" (MBMST 2019) Pub Date : 2019-12-03 DOI: 10.3846/mbmst.2019.127

S. Ravaszová, K. Dvořák

引用次数: 0

Selection of structural system for wooden public building: Multiple criteria approach 木质公共建筑结构体系的选择:多准则方法

The proceedings of the 13th international conference "Modern Building Materials, Structures and Techniques" (MBMST 2019) Pub Date : 2019-12-03 DOI: 10.3846/mbmst.2019.074

L. Tupėnaitė, T. Gečys, Loreta Kanapeckiene, S. Sajjadian, Jurga Naimaviciene

{"title":"Selection of structural system for wooden public building: Multiple criteria approach","authors":"L. Tupėnaitė, T. Gečys, Loreta Kanapeckiene, S. Sajjadian, Jurga Naimaviciene","doi":"10.3846/mbmst.2019.074","DOIUrl":"https://doi.org/10.3846/mbmst.2019.074","url":null,"abstract":"There has been a growing interest in the construction industry for using materials with lower environmental\u0000impacts, in this context, stakeholders increasingly seeing wood as the natural and sustainable option for public buildings. Studies worldwide have already investigated modern structural systems for wooden construction. However, the\u0000selection of alternative structural systems is rarely discussed, alternatives are seldom compared. To close a gap this\u0000paper proposes a framework for selection of the structural system for a wooden public building based on a Simple\u0000Additive Weighting (SAW) multiple criteria assessment method. The proposed methodology is applied for the case of\u0000a public wooden building – shopping centre in Lithuania. Three structural systems (1) double tapered glued laminated\u0000beams and columns, (2) laminated veneer lumber (LVL) trusses and columns and (3) single tapered glued laminated\u0000beam and I type steel column are compared. The research allowed distinguishing the most efficient structural system\u0000according to eight conflicting quantitative and qualitative criteria, which, in this case, contains double tapered glued\u0000laminated beams and columns. Proposed assessment framework is relatively simple to apply, therefore can be successfully used in practice.","PeriodicalId":169478,"journal":{"name":"The proceedings of the 13th international conference \"Modern Building Materials, Structures and Techniques\" (MBMST 2019)","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122284933","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}

引用次数: 0