The proceedings of the 13th international conference "Modern Building Materials, Structures and Techniques" (MBMST 2019)最新文献_第5页

Damage of prestressed concrete railway sleepers and its impact on durability 铁路预应力混凝土轨枕损伤及其对耐久性的影响

The proceedings of the 13th international conference "Modern Building Materials, Structures and Techniques" (MBMST 2019) Pub Date : 2019-12-03 DOI: 10.3846/mbmst.2019.088

A. Jokūbaitis, G. Marčiukaitis, J. Valivonis

引用次数: 1

Development of an anchorage prototype for CFRP stress-ribbon systems using 3D printing technique 利用3D打印技术开发CFRP应力带系统的锚固原型

The proceedings of the 13th international conference "Modern Building Materials, Structures and Techniques" (MBMST 2019) Pub Date : 2019-12-03 DOI: 10.3846/mbmst.2019.138

V. Gribniak, A. Arnautov, Arvydas Rimkus

{"title":"Development of an anchorage prototype for CFRP stress-ribbon systems using 3D printing technique","authors":"V. Gribniak, A. Arnautov, Arvydas Rimkus","doi":"10.3846/mbmst.2019.138","DOIUrl":"https://doi.org/10.3846/mbmst.2019.138","url":null,"abstract":"Compared with other structure types, stress-ribbon systems are extremely simple though requiring massive\u0000anchorage blocks because of very large tensile stresses induced in the ribbons. Such structural systems are efficient in\u0000pedestrian bridges. A major drawback of these systems is related to corrosion of the steel ribbons. Unidirectional carbon\u0000fibre reinforced polymer (CFRP) has a high potential for replacing steel in the ribbons because of lightweight, high\u0000strength, and excellent resistance to corrosion and fatigue. Application of CFRP materials, however, faced serious problems due to construction of the anchorage joints. Thus, the anchorage system is the object of this research.\u0000Adhesive bonding is a simplest technology for joining structural components made of CFRP composites with polymer\u0000matrix. In the adhesion joints, the loads are transferred due to the shear effect. However, a relatively low inter-laminar\u0000shear strength of CFRP decreases effectiveness of the gripping systems. Brittle failure of the bond is often consequence\u0000of stress concentration. An innovative anchorage joint is proposed to control shear stresses by varying a local curvature\u0000of the contact surface. A natural shape of Nautilus shell was chosen for the gripping system, whereas a 3D printing\u0000technique was applied for the prototyping purpose. Mechanical behaviour of the anchorage prototypes made of printed\u0000polymeric material was investigated experimentally.","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":"121980504","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

Automation of calibration process adopting metaheuristic optimization method 采用元启发式优化方法实现校准过程自动化

The proceedings of the 13th international conference "Modern Building Materials, Structures and Techniques" (MBMST 2019) Pub Date : 2019-12-03 DOI: 10.3846/mbmst.2019.142

Pavel Koudela, J. Chalmovský

引用次数: 1

Experimental study of the behaviour of cement pastes in the presence of carbon nanotubes 碳纳米管存在下水泥浆体行为的实验研究

The proceedings of the 13th international conference "Modern Building Materials, Structures and Techniques" (MBMST 2019) Pub Date : 2019-12-03 DOI: 10.3846/mbmst.2019.084

Ritoltas Šukys, J. Pranckevičienė, G. Girskas, I. Pundienė, Dainius Leonavičius, M. Kligys

{"title":"Experimental study of the behaviour of cement pastes in the presence of carbon nanotubes","authors":"Ritoltas Šukys, J. Pranckevičienė, G. Girskas, I. Pundienė, Dainius Leonavičius, M. Kligys","doi":"10.3846/mbmst.2019.084","DOIUrl":"https://doi.org/10.3846/mbmst.2019.084","url":null,"abstract":"One of the methods recently applied for the noticeably improvement of properties of cementitious materials\u0000is the use of the single or multi-walled carbon nanotubes (CNTs) as nano-reinforcements in cementitious materials. The\u0000positive action of CNTs highly depends not only on its nature, length and amount, but also on previous treatment of\u0000CNTs and quality of CNTs dispersion. It is important to obtain the effects of multi-walled CNTs, dispersed only in\u0000carboxyl-methyl cellulose – commercially available pellets without the use of any commercially available surfactants\u0000or plasticizers. The influence of dispersed CNTs on the rheological properties of fresh cement pastes and physical and\u0000mechanical properties of hardened specimens was analyzed in this work. Compared to the dynamic viscosity of pure\u0000distilled water smaller amounts of CNTs (0.00005–0.005%) reduce the dynamic viscosity down to the 15% whereas\u0000higher amounts of CNTs (0.05–0.5%) increase the dynamic viscosity from 1.3 to 4.7 times. Mechanical tests of hardened\u0000for 28 days cement paste specimens showed that smaller amounts of CNTs (0.00005–0.005%) increase the compressive\u0000and flexural strengths by 38.07– 42.3% and 40.1– 44.6%, whereas higher amounts of CNTs (0.05–0.5%) increase these\u0000strengths just by 21.11–18.82% and 18.33–6.6% respectively.","PeriodicalId":169478,"journal":{"name":"The proceedings of the 13th international conference \"Modern Building Materials, Structures and Techniques\" (MBMST 2019)","volume":"18 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":"133012916","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

Change of soil mechanical properties due to triaxial sample size 三轴试样尺寸对土壤力学特性的影响

The proceedings of the 13th international conference "Modern Building Materials, Structures and Techniques" (MBMST 2019) Pub Date : 2019-12-03 DOI: 10.3846/mbmst.2019.006

Š. Skuodis, N. Dirgėlienė, I. Lekstutytė

引用次数: 2

Deformations of foundations of windplant installation crane sites and their reasons 风电场安装起重机场地基础变形及原因分析

The proceedings of the 13th international conference "Modern Building Materials, Structures and Techniques" (MBMST 2019) Pub Date : 2019-12-03 DOI: 10.3846/mbmst.2019.043

Saulius Gadeikis, Donatas Urbaitis, Domas Gribulis, Sonata Gadeikytė, Gintaras Žaržojus

引用次数: 0

Long-term properties of foamed concrete 泡沫混凝土的长期性能

The proceedings of the 13th international conference "Modern Building Materials, Structures and Techniques" (MBMST 2019) Pub Date : 2019-12-03 DOI: 10.3846/mbmst.2019.067

R. Gailitis, A. Sprince, L. Pakrastins, G. Shakhmenko, T. Kozlovskis, L. Radina

{"title":"Long-term properties of foamed concrete","authors":"R. Gailitis, A. Sprince, L. Pakrastins, G. Shakhmenko, T. Kozlovskis, L. Radina","doi":"10.3846/mbmst.2019.067","DOIUrl":"https://doi.org/10.3846/mbmst.2019.067","url":null,"abstract":"Foamed concrete has been used as a building material since the early 1920s. In the beginning, it was used as\u0000an insulation material with very low density. Since then there have been attempts to improve the structural properties in\u0000order to increase materials load-bearing capacity. In the present-day foamed concrete is being used in soil reinforcement,\u0000manufacturing of building blocks and other sorts of construction materials (Mugahed Amran, Farzadnia, & Abang Ali,\u00002015).\u0000The aim of this article is to determine the behaviour and long-term properties of foamed concrete.\u0000Cylindrical specimens (Ø46×190 mm) were used for creep and shrinkage testing. The creep properties of the specimens\u0000were determined by loading them with 20% and 60% of the ultimate compressive stress value (Sprince, 2015).\u0000The compressive strength, creep, shrinkage and specific creep of the material were examined. It was determined that\u0000during 90 days of creep testing the non-linear creep deformations (specimens loaded with 60% of the ultimate stress)\u0000are 4 times larger than linear creep deformations (specimens loaded with 20% of the ultimate stress). Also, changes in\u0000the modulus of elasticity of foamed concrete were researched over time. Foamed concrete modulus of elasticity reached\u000012.21 GPa on the 28th day, 12.49 GPa on the 62nd and 14.23 GPa on the 144th day since the specimens were made.","PeriodicalId":169478,"journal":{"name":"The proceedings of the 13th international conference \"Modern Building Materials, Structures and Techniques\" (MBMST 2019)","volume":"10 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":"121356639","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

A new approach for extending the possibilities of collaboration between BIM, GIS and Web environments to increase the efficiency of building space management 扩展BIM、GIS和Web环境之间协作的可能性的新方法，以提高建筑空间管理的效率

The proceedings of the 13th international conference "Modern Building Materials, Structures and Techniques" (MBMST 2019) Pub Date : 2019-12-03 DOI: 10.3846/mbmst.2019.057

Danylo Shkundalov, T. Vilutienė

{"title":"A new approach for extending the possibilities of collaboration between BIM, GIS and Web environments to increase the efficiency of building space management","authors":"Danylo Shkundalov, T. Vilutienė","doi":"10.3846/mbmst.2019.057","DOIUrl":"https://doi.org/10.3846/mbmst.2019.057","url":null,"abstract":"The paper presents the approach that extends the opportunities of Web environments in BIM model processing\u0000and allows implementation of the bigger amount of analysis that is based on the object’s positioning. With the developed\u0000relations, the objects in the BIM model can be considered not just like independent 3D objects in the WebGL environment but as objects that are linked between each other and can act by the rules that defined to each type of the objects.\u0000Correlated co-ordinates will be useful for the architects, building operators and facility managers who use the BIM\u0000model for the management of the building and its components. This method can be used to increase the effectiveness of\u0000space management, clash detection, relocation management and space programming as well as existing conditions modelling and lighting analysis can be done in a way that is more efficient due to possibility of implementation of the survey\u0000coordinate system that will give the coordinates to each object in the scene.","PeriodicalId":169478,"journal":{"name":"The proceedings of the 13th international conference \"Modern Building Materials, Structures and Techniques\" (MBMST 2019)","volume":"3 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":"115351467","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: 5

Corrosion resistance dry building mortars base on alkaline slag binder for using in aggressive sulfate medium 碱性矿渣粘结剂抗腐蚀干建筑砂浆，适用于腐蚀性硫酸盐介质

The proceedings of the 13th international conference "Modern Building Materials, Structures and Techniques" (MBMST 2019) Pub Date : 2019-12-03 DOI: 10.3846/mbmst.2019.039

V. Turchin, Stanislav Sychugov, L. Yudina, A. Gumeniuk, T. Zhilkina, Yuriy Gmizov, Rimantas Mackevičius, T. Ivanova

{"title":"Corrosion resistance dry building mortars base on alkaline slag binder for using in aggressive sulfate medium","authors":"V. Turchin, Stanislav Sychugov, L. Yudina, A. Gumeniuk, T. Zhilkina, Yuriy Gmizov, Rimantas Mackevičius, T. Ivanova","doi":"10.3846/mbmst.2019.039","DOIUrl":"https://doi.org/10.3846/mbmst.2019.039","url":null,"abstract":"Dry Building Mortars (DBM) are new in terms of building technology, and they sometimes substitute\u0000different kinds of concrete and mortar mixes. DBM have been successfully used in construction and their performance\u0000has been as efficient as the one of commercial mortar mixes, i.e. they boost labour efficiency, and bring down material\u0000consumption. They can be also kept in stock for a long time, and shipped with no compromise in quality. Today DBM\u0000are based on cementing components. And some famous mix mortars are based on gypsum, polymer, and some other\u0000types of cementing components which contain fine-dispersed additives of ground slag, fly ash, and raw sludge. These\u0000mix mortars are applied as smoothing, aligning, waterproof, and safety types of coverage.\u0000This article studies the possibility of involving slag cementing components in manufacturing DBM. Due to their high\u0000waterproof resistance in salt-affected water, these sorts of mixes may be used as protective coatings and plasters for\u0000concrete frames in corrosive medium. Slag Cementing Components (SCC) are hydraulic cementing agents, which\u0000harden both in water and in open air. They are produced by mixing electric-furnace slag or furnace clinkers with some\u0000solutions of alkaline metals (to trigger alkaline reaction), or by mixing together all these agents.","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":"122932605","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

Multi-criteria assessment of pitched roof reconstruction technologies 坡屋顶重建技术的多准则评价

The proceedings of the 13th international conference "Modern Building Materials, Structures and Techniques" (MBMST 2019) Pub Date : 2019-12-03 DOI: 10.3846/mbmst.2019.108

Roman Kuznecov, Jonas Šaparauskas

引用次数: 1