The Baltic Journal of Road and Bridge Engineering最新文献_第7页

Asphalt Pavement Compaction Control: Relevance of Laboratory and Non-Destructive Testing Methods of Density 沥青路面压实控制:密度实验室和无损检测方法的相关性

The Baltic Journal of Road and Bridge Engineering Pub Date : 2022-03-28 DOI: 10.7250/bjrbe.2022-17.555

Andrius Baltrušaitis, A. Vaitkus, J. Židanavičiūtė

{"title":"Asphalt Pavement Compaction Control: Relevance of Laboratory and Non-Destructive Testing Methods of Density","authors":"Andrius Baltrušaitis, A. Vaitkus, J. Židanavičiūtė","doi":"10.7250/bjrbe.2022-17.555","DOIUrl":"https://doi.org/10.7250/bjrbe.2022-17.555","url":null,"abstract":"Assurance of asphalt pavement layer compaction, expressed by air voids ratio between field and laboratory bulk density, is one of the main criteria of the asphalt pavement durability. Thus, destructive measures should be applied, and many asphalt samples should be taken on site in order to determine the representative compaction level of constructed pavement. With the fast development of technologies, new methods should be considered for fast, non-destructive and accurate determination of asphalt bulk density on site. As there are quite few non-destructive methods related to asphalt pavement density measurement, there is a need to make comparison of such methods. Currently, when GPR methods are used to determine the density, calibration cores are used in all cases to estimate the unknown or unmeasured variables or conditions that may affect the results of dielectric value measurements. The aim of this study is to develop a regression model that can predict the bulk density of the compacted asphalt layer without coring, using the design values of the bulk density determined in the type tests of asphalt mixtures or other currently used non-destructive testing technologies (in this case PQI and NDG) and GPR measured dielectric constant values.","PeriodicalId":297140,"journal":{"name":"The Baltic Journal of Road and Bridge Engineering","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114634477","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

Trench Fires Resulting from Accidental Releases from Tanker Trucks: Assessing the Thermal Effect on Roadside Territory 油罐车意外泄漏引起的沟火:评估路边区域的热效应

The Baltic Journal of Road and Bridge Engineering Pub Date : 2022-03-28 DOI: 10.7250/bjrbe.2022-17.557

E. Vaidogas, Oksana Survilė

{"title":"Trench Fires Resulting from Accidental Releases from Tanker Trucks: Assessing the Thermal Effect on Roadside Territory","authors":"E. Vaidogas, Oksana Survilė","doi":"10.7250/bjrbe.2022-17.557","DOIUrl":"https://doi.org/10.7250/bjrbe.2022-17.557","url":null,"abstract":"The risk posed by spill and subsequent fire during road transportation of flammable liquid is considered in the paper. Attention is paid to a pool fire than can occur in roadside terrain. Circumstances and road situations increasing the likelihood of a spill and fire accident are analysed. The problem under study is an assessment of thermal radiation induced by a roadside pool fire. This study applied a pool fire model known as a trench fire to a roadside situation. The trench fire is considered to be a likely type of a pool fire due to presence of roadside ditches and other oblong low areas along the road. The estimation of the thermal radiation from trench fires is carried out in the deterministic way due to actual lack of systematic uncertainty modelling related to pool fires. Deterministic models developed for estimating the radiation of pool and trench fires are presented and illustrated by a transportation case study. The case study reveals that the thermal radiation emitted by a trench fire can endanger objects positioned in the intermediate vicinity to the road. Further spread of fire into more distant locations is possible only through the domino effect. Incorporation of the thermal radiation models into a transportation risk assessment is discussed in brief. Findings of this study are viewed as knowledge that can be used for refining the estimation of risk posed by transportation of hazardous materials.","PeriodicalId":297140,"journal":{"name":"The Baltic Journal of Road and Bridge Engineering","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133648536","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

Utilisation of Recycled Concrete Aggregates for Sustainable Porous Asphalt Pavements 利用再生混凝土集料建造可持续多孔沥青路面

The Baltic Journal of Road and Bridge Engineering Pub Date : 2022-03-28 DOI: 10.7250/bjrbe.2022-17.554

C. Nwakaire, S. P. Yap, C. C. Onn, C. W. Yuen, Seyed Mohammad Hossein Moosavi

{"title":"Utilisation of Recycled Concrete Aggregates for Sustainable Porous Asphalt Pavements","authors":"C. Nwakaire, S. P. Yap, C. C. Onn, C. W. Yuen, Seyed Mohammad Hossein Moosavi","doi":"10.7250/bjrbe.2022-17.554","DOIUrl":"https://doi.org/10.7250/bjrbe.2022-17.554","url":null,"abstract":"The use of recycled concrete aggregates (RCA) for porous asphalts is a viable attempt towards waste management and sustainable conservation of natural resources. Installation of a porous asphalt wearing course is justified in highway pavements because it offers higher skid resistance, glare reduction, lesser traffic noise, reduction of hydroplaning, and mitigation of urban heat island phenomenon. The performance of porous asphalt mixtures containing 0%, 20%, 40%, 60%, 80% and 100% of coarse RCA as replacement for granite was studied and reported in this paper. The mixture containing 0% RCA was used as the control. The skid properties, permeability, water susceptibility and mechanical behaviour of the mixtures under various loading conditions were investigated. Blending granite and RCA in the porous asphalt mixture gave better Indirect Tensile Strength (ITS), rutting resistance, and impact strength indicators. The mixture with 60% RCA achieved desirable results in all tests. It exhibited the best performance based on its ITS and impact strength of 431 kPa and 380 J, respectively. These values were higher than the control by 3% and 30%, respectively. Utilisation of RCA in porous asphalt pavements is recommended based on the results of this study.","PeriodicalId":297140,"journal":{"name":"The Baltic Journal of Road and Bridge Engineering","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127084414","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

Behaviour of a Clay and Gravel Mixture 粘土和砾石混合物的特性

The Baltic Journal of Road and Bridge Engineering Pub Date : 2022-03-28 DOI: 10.7250/bjrbe.2022-17.553

A. Cabalar, Sarwar Omer Hama, S. Demir

引用次数: 5

A Network-Based Importance Measurement Index for Bridge Security Risk Assessment and Prioritisation 基于网络的桥梁安全风险评估与优先级排序重要性度量指标

The Baltic Journal of Road and Bridge Engineering Pub Date : 2022-03-28 DOI: 10.7250/bjrbe.2022-17.549

Mehdi Dezfuli Nezhad, R. Raoufi, A. Dalvand

{"title":"A Network-Based Importance Measurement Index for Bridge Security Risk Assessment and Prioritisation","authors":"Mehdi Dezfuli Nezhad, R. Raoufi, A. Dalvand","doi":"10.7250/bjrbe.2022-17.549","DOIUrl":"https://doi.org/10.7250/bjrbe.2022-17.549","url":null,"abstract":"In the related literature, conventional approaches to assessing security risk and prioritising bridges have focused on unique characteristics. Although the unique characteristics appropriately reflect the economic and social consequences of failure, they neglect the consequences of a bridge failure at the network level. If network owners and operators prioritise bridges solely based on their unique characteristics, bridges with low object-level importance and high network-level importance have very low chances to get priority. In this paper, a bridge importance measurement index α(e) has been presented, prioritising bridges based on their unique characteristics, location and network topology. To describe how to use this index α(e), three numerical examples were provided. While the first example was related to a simple hypothetical network, the second and third examples were real networks related to the bridges of Wroclaw city. Using these examples, the results of bridge prioritisation obtained in the unique-characteristics-only state were compared to the state in which α(e) had been used. Results showed that considering the location of the bridge and the topological characteristics of the network change the bridges prioritisation. For instance, in the second example, it was observed that the use of the α(e), made bridge Bolesława Krzywoustego the essential bridge, while bridge Grunwaldzki was the essential bridge under the previous prioritisation made by researchers. However, the results of the third example showed that bridge Milenijny, which was considered the essential network bridge as stated in the previous prioritisation made by researchers, was again selected as the most critical bridge based on the α(e).","PeriodicalId":297140,"journal":{"name":"The Baltic Journal of Road and Bridge Engineering","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127930821","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

Dependency of Pavement Roughness Level on the Type of Road Works 路面不平程度与道路工程类型的关系

The Baltic Journal of Road and Bridge Engineering Pub Date : 2022-03-28 DOI: 10.7250/bjrbe.2022-17.552

Paulius Paplauskas, A. Vaitkus

引用次数: 0

The Effects of Mineral Wool Fly Ash on Cohesive Soil Strength Behaviour 矿棉粉煤灰对黏结土强度特性的影响

The Baltic Journal of Road and Bridge Engineering Pub Date : 2021-12-28 DOI: 10.7250/bjrbe.2021-16.545

Mindaugas Zakarka, Š. Skuodis, Rimantas Mackevičius, D. Sližytė

{"title":"The Effects of Mineral Wool Fly Ash on Cohesive Soil Strength Behaviour","authors":"Mindaugas Zakarka, Š. Skuodis, Rimantas Mackevičius, D. Sližytė","doi":"10.7250/bjrbe.2021-16.545","DOIUrl":"https://doi.org/10.7250/bjrbe.2021-16.545","url":null,"abstract":"This research work represents updated results of cohesive soil strength improvement with mineral wool fly ash. In the investigations, these materials were used: Portland cement CEM I 42.5 R, fly ash obtained from a mineral wool production process, sand and clay. Mixtures were prepared as follows: dry mixing of Portland cement and fly ash; dry mixing of sand and clay; adding water into Portland cement and fly ash; adding sand and clay mixture into already prepared Portland cement and fly ash suspension. The content of fly ash replacing Portland cement varied from 0% to 40%, and the content of sand mixture varied from 20% to 60%. After 24 hours, investigated samples were taken out from cylinder forms and kept in a desiccator with a humidity of 90% and at 20 °C temperature. Uniaxial compressive strength of the samples was determined after 548 days and compared to previous research results obtained after 7, 28 and 183 days. The most predictable compressive strength is for samples, which composition is 100% cement and 0% fly ash. In these samples, the highest compressive strength was obtained, comparing them to the other investigated samples. Compressive strength change is minimal for samples with a 10–30% amount of fly ash. The most significant decrease in compressive strength was obtained for samples with a 40% fly ash after 183 days. Nonetheless, the compressive strength of these samples increased after 548 days and is almost the same as for samples with 100% Portland cement.","PeriodicalId":297140,"journal":{"name":"The Baltic Journal of Road and Bridge Engineering","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128189892","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

Investigation on Acoustic Versus Functional Characteristics of Porous Asphalt 多孔沥青的声学与功能特性研究

The Baltic Journal of Road and Bridge Engineering Pub Date : 2021-12-28 DOI: 10.7250/bjrbe.2021-16.546

F. Praticò, R. Fedele, P. G. Briante

{"title":"Investigation on Acoustic Versus Functional Characteristics of Porous Asphalt","authors":"F. Praticò, R. Fedele, P. G. Briante","doi":"10.7250/bjrbe.2021-16.546","DOIUrl":"https://doi.org/10.7250/bjrbe.2021-16.546","url":null,"abstract":"The theoretical background, standards, and contract requirements of pavement friction courses involve functional (e.g., permeability) and acoustic (e.g., resistivity) characteristics. Unfortunately, their relationship is partly unknown and uncertain. This affects the comprehensiveness and soundness of the mix design of asphalt pavements. Based on the issues above, the goals of this study were confined into the following ones: 1) to investigate the relationship between acoustic and functional properties of porous asphalts; 2) to investigate, through one-layer (1L) and two-layer (2L) models, the effectiveness of the estimates of acoustic input data through mixture volumetric- and permeability-related characteristics. Volumetric and acoustic tests were performed and simulations were carried out. Equations and strategies to support a comprehensive approach were derived. Results demonstrate that even if the measured resistivity is very important, permeability-based estimates of resistivity well explain acoustic spectra. Furthermore, the distance between observed and estimated peaks of the absorption spectrum emerges as the best error function.","PeriodicalId":297140,"journal":{"name":"The Baltic Journal of Road and Bridge Engineering","volume":"68 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115839062","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: 3

Evaluation of Pavement Runoff and Driving Safety on Highway Curve Segment 公路弯道段路面径流与行车安全评价

The Baltic Journal of Road and Bridge Engineering Pub Date : 2021-12-28 DOI: 10.7250/bjrbe.2021-16.544

Yan-fen Geng, Huanyun Zhou, Xiaojing Gong, Yaolu Ma, Xianhua Chen

{"title":"Evaluation of Pavement Runoff and Driving Safety on Highway Curve Segment","authors":"Yan-fen Geng, Huanyun Zhou, Xiaojing Gong, Yaolu Ma, Xianhua Chen","doi":"10.7250/bjrbe.2021-16.544","DOIUrl":"https://doi.org/10.7250/bjrbe.2021-16.544","url":null,"abstract":"Runoff depth distribution on the concave and circular curve sections is obtained from a two-dimensional numerical simulating model in order to analyze the temporal and spatial variation of the pavement runoff on the curve section. The two-dimensional model verified by the field data can depict the alignment of pavement more accurately as compared to the empirical equation and a one-dimensional model. The runoff on the concave section and circular curve section is compared for the free water drainage and centerline drainage. Results show that a two-dimensional model is essential for the analysis of the centerline drainage. The runoff depth can be controlled by a reasonable curb height and location interval. The drainage type affects the variation of the runoff depth on the nearside lane, and the maximum water depth can be up to more than 80 mm on the concave section and nearly 60 mm on the circular curve section under centerline drainage. Besides the existing hydroplaning results, the runoff depth difference of the wheel trace should be considered to evaluate driving safety. Sideslip will occur when the depth difference becomes more than 6 mm under condition that the runoff depth is less than the tread depth (7 mm). When the runoff depth is more than the tread depth, sideslip will occur once the depth difference exceeds 4 mm.","PeriodicalId":297140,"journal":{"name":"The Baltic Journal of Road and Bridge Engineering","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122443290","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

Eliminating the Influence of Axle Parameters in Influence Line Identification 影响线识别中轴参数影响的消除

The Baltic Journal of Road and Bridge Engineering Pub Date : 2021-12-28 DOI: 10.7250/bjrbe.2021-16.547

Qingqing Zhang, Qianlong Liu, Li Dai, Qiang Liu

{"title":"Eliminating the Influence of Axle Parameters in Influence Line Identification","authors":"Qingqing Zhang, Qianlong Liu, Li Dai, Qiang Liu","doi":"10.7250/bjrbe.2021-16.547","DOIUrl":"https://doi.org/10.7250/bjrbe.2021-16.547","url":null,"abstract":"Accurate and rapid acquisition of the strain influence line of continuous beam plays a positive role in promoting the wide application of structural health monitoring. The structural response obtained from the sensors is used to estimate the strain influence line. However, most estimation methods ignore the influence of axle parameters on the structural response, resulting in a large error in identifying the strain influence line. This paper presents a method for eliminating the influence of axle parameters of moving vehicles on strain responses to estimate the strain influence line of continuous beams based on the long-gauge strain sensing technology. By analysing the mechanical characteristics of the multi-span continuous beam, a theoretical strain influence line expression is first established to obtain the strain influence line of the continuous beam accurately. The structural response only caused by axle weight, obtained by eliminating the influence of axle parameters, is then estimated for calibrating the theoretical strain influence line. Finally, different lane tests are also considered to solve the influence of different transverse position relations on the proposed method between the monitoring unit and the lane. Finally, numerical simulations are adopted to illustrate the effectiveness of the proposed identification method by simulating the strain time histories induced by a multi-axle vehicle. A field test also demonstrates the validity and feasibility of this method.","PeriodicalId":297140,"journal":{"name":"The Baltic Journal of Road and Bridge Engineering","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128455543","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