{"title":"Caltrans Implementation of UHPC Connections for ABC Projects","authors":"D. Mellon, Justin Palmaymesa","doi":"10.21838/uhpc.9715","DOIUrl":"https://doi.org/10.21838/uhpc.9715","url":null,"abstract":"","PeriodicalId":170570,"journal":{"name":"Second International Interactive Symposium on UHPC","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115348641","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}
{"title":"Renovation of an Underground Hydroelectric Dam Gallery Using High Wear-Resistant UHPFRC Screed","authors":"G. Roux, J. Fischer, Xavier Lacques","doi":"10.21838/uhpc.9734","DOIUrl":"https://doi.org/10.21838/uhpc.9734","url":null,"abstract":"","PeriodicalId":170570,"journal":{"name":"Second International Interactive Symposium on UHPC","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122030844","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}
{"title":"Development of Standardized Details for UHPC Applications","authors":"H. White","doi":"10.21838/uhpc.9647","DOIUrl":"https://doi.org/10.21838/uhpc.9647","url":null,"abstract":"","PeriodicalId":170570,"journal":{"name":"Second International Interactive Symposium on UHPC","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126415939","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}
P. Hála, R. Sovják, Markéta Munduchová, Vít Majer, T. Mičunek
Statistics indicates that one quarter of deadly traffic accidents are caused by the collision of vehicle with non-deformable objects. To address this issue and to decrease the transportation hazards, we developed novel Energy Absorbing System (EAS). It is comprised of blocks with cellular structures made of Ultra-High Performance Concrete (UHPC). These blocks are able to absorb impact energy because of the gradual brittle fracture process which occurs in the cellular structures and at the same time they are able to carry the weight of the structure above or to withstand the load generated by crossing vehicles. The UHPC used makes EAS suitable for use in harsh environmental conditions while still having reasonable production costs and the ability to be mass produced. All components of UHPC are commonly available in large volumes for a reasonable price and the resulting material can be shaped into various forms, and gradual deceleration of the car was recorded. The ability of the EAS made of UHPC to gradually decelerate impacting cart was demonstrated using experimental and numerical methods. The main objective of our recent project is to further improve the EAS in cooperation with the private sector and to begin its mass production.
{"title":"High-Load Bearing Deformation Block Made of UHPC","authors":"P. Hála, R. Sovják, Markéta Munduchová, Vít Majer, T. Mičunek","doi":"10.21838/uhpc.9657","DOIUrl":"https://doi.org/10.21838/uhpc.9657","url":null,"abstract":"Statistics indicates that one quarter of deadly traffic accidents are caused by the collision of vehicle with non-deformable objects. To address this issue and to decrease the transportation hazards, we developed novel Energy Absorbing System (EAS). It is comprised of blocks with cellular structures made of Ultra-High Performance Concrete (UHPC). These blocks are able to absorb impact energy because of the gradual brittle fracture process which occurs in the cellular structures and at the same time they are able to carry the weight of the structure above or to withstand the load generated by crossing vehicles. The UHPC used makes EAS suitable for use in harsh environmental conditions while still having reasonable production costs and the ability to be mass produced. All components of UHPC are commonly available in large volumes for a reasonable price and the resulting material can be shaped into various forms, and gradual deceleration of the car was recorded. The ability of the EAS made of UHPC to gradually decelerate impacting cart was demonstrated using experimental and numerical methods. The main objective of our recent project is to further improve the EAS in cooperation with the private sector and to begin its mass production.","PeriodicalId":170570,"journal":{"name":"Second International Interactive Symposium on UHPC","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126012447","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}
Sheharyar e Rehmat, Amir Sadeghnejad, A. Azizinamini
{"title":"Connection between Concrete Filled Tube (CFT) Columns and Prefabricated elements using UHPC","authors":"Sheharyar e Rehmat, Amir Sadeghnejad, A. Azizinamini","doi":"10.21838/uhpc.9675","DOIUrl":"https://doi.org/10.21838/uhpc.9675","url":null,"abstract":"","PeriodicalId":170570,"journal":{"name":"Second International Interactive Symposium on UHPC","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130928469","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}
{"title":"Design and Construction of UHPC Link Slabs","authors":"James Scarlata","doi":"10.21838/uhpc.9644","DOIUrl":"https://doi.org/10.21838/uhpc.9644","url":null,"abstract":"","PeriodicalId":170570,"journal":{"name":"Second International Interactive Symposium on UHPC","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131397690","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}
{"title":"UHPC in the UK","authors":"Oliver Budd, S. Pottle, Mungo Stacy","doi":"10.21838/uhpc.9709","DOIUrl":"https://doi.org/10.21838/uhpc.9709","url":null,"abstract":"","PeriodicalId":170570,"journal":{"name":"Second International Interactive Symposium on UHPC","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133056819","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}
Amir Sadeghnejad, Sheharyar e Rehmat, A. Azizinamini
The superior mechanical properties of Ultra-High Performance Concrete (UHPC) such as high compressive and tensile strength has allowed its application for innovative bridge systems. High early strength gain and durability of UHPC makes it a viable choice for Accelerated Bridge Construction application. Recent studies have shown feasibility of UHPC as stay-in-place formwork for different bridge elements. In this research, an innovative structural system using stay-in-place UHPC formwork is proposed for short-span bridge super-structure and an experiment is designed to investigate its structural performance. In this approach, UHPC is prefabricated into an efficient formwork for both construction and structural performance. These forms consist of a series of semi-circular sections spanning longitudinally between the supports. After these prefabricated modules are positioned, reinforcement cage is placed inside, and they are filled and topped with normal concrete. The UHPC layer provides durability and protection for the cast-in-place concrete while improving the structural performance. The research objectives are to the use of for these elements, assessing the feasibility of construction, structural performance of the composite section. A parametric finite element
{"title":"Development of Innovative Short-Span Bridge System Using UHPC Formworks","authors":"Amir Sadeghnejad, Sheharyar e Rehmat, A. Azizinamini","doi":"10.21838/uhpc.9685","DOIUrl":"https://doi.org/10.21838/uhpc.9685","url":null,"abstract":"The superior mechanical properties of Ultra-High Performance Concrete (UHPC) such as high compressive and tensile strength has allowed its application for innovative bridge systems. High early strength gain and durability of UHPC makes it a viable choice for Accelerated Bridge Construction application. Recent studies have shown feasibility of UHPC as stay-in-place formwork for different bridge elements. In this research, an innovative structural system using stay-in-place UHPC formwork is proposed for short-span bridge super-structure and an experiment is designed to investigate its structural performance. In this approach, UHPC is prefabricated into an efficient formwork for both construction and structural performance. These forms consist of a series of semi-circular sections spanning longitudinally between the supports. After these prefabricated modules are positioned, reinforcement cage is placed inside, and they are filled and topped with normal concrete. The UHPC layer provides durability and protection for the cast-in-place concrete while improving the structural performance. The research objectives are to the use of for these elements, assessing the feasibility of construction, structural performance of the composite section. A parametric finite element","PeriodicalId":170570,"journal":{"name":"Second International Interactive Symposium on UHPC","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133987090","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}
: With number of existing bridges in U.S, classified as structurally deficient and many bridges nearing end of their design service life, there is a need for a durable and accelerated construction solution. Recently, several state DOTs developed innovative solutions using Ultra-High Performance Concrete (UHPC) as infill material between prefabricated bridge components or as an overlay over existing structural elements. The normal strength concrete (NSC) to UHPC interface behavior is critical for overall performance of such structures. Experimental investigation consisting of 10 push-off specimens was performed to investigate shear transfer behavior at NSC-UHPC interface. In general, the results showed that increasing roughness depth and reinforcement area has positive effect in interface shear capacity. The experimental results were compared with current AASHTO LRFD, ACI and PCI design guidelines. Though the design guidelines were conservative; they were not accurate in predicting the interface shear strength. Additionally, a database including results from past push-off tests on NSC-UHPC interface was developed and a reliability analysis was carried out with respect to AASHTO LRFD design guidelines. The reliability index was found to be lower than the target reliability index in standard design practices.
{"title":"An Experimental and Statistical Study of Normal Strength Concrete (NSC) to Ultra High Performance Concrete (UHPC) Interface Shear Behavior","authors":"Sumedha Sharma, Sriram Aaleti, T. Dao","doi":"10.21838/uhpc.9700","DOIUrl":"https://doi.org/10.21838/uhpc.9700","url":null,"abstract":": With number of existing bridges in U.S, classified as structurally deficient and many bridges nearing end of their design service life, there is a need for a durable and accelerated construction solution. Recently, several state DOTs developed innovative solutions using Ultra-High Performance Concrete (UHPC) as infill material between prefabricated bridge components or as an overlay over existing structural elements. The normal strength concrete (NSC) to UHPC interface behavior is critical for overall performance of such structures. Experimental investigation consisting of 10 push-off specimens was performed to investigate shear transfer behavior at NSC-UHPC interface. In general, the results showed that increasing roughness depth and reinforcement area has positive effect in interface shear capacity. The experimental results were compared with current AASHTO LRFD, ACI and PCI design guidelines. Though the design guidelines were conservative; they were not accurate in predicting the interface shear strength. Additionally, a database including results from past push-off tests on NSC-UHPC interface was developed and a reliability analysis was carried out with respect to AASHTO LRFD design guidelines. The reliability index was found to be lower than the target reliability index in standard design practices.","PeriodicalId":170570,"journal":{"name":"Second International Interactive Symposium on UHPC","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130295552","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}
Carmen Maria Quist Batista, Larry Rowland, Erik Pram Nielsen
{"title":"The Next Generation of UHPC","authors":"Carmen Maria Quist Batista, Larry Rowland, Erik Pram Nielsen","doi":"10.21838/uhpc.9698","DOIUrl":"https://doi.org/10.21838/uhpc.9698","url":null,"abstract":"","PeriodicalId":170570,"journal":{"name":"Second International Interactive Symposium on UHPC","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114910625","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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