Concrete Slab Surface Defects PDF Download

Author: Portland Cement Association
Publisher:
ISBN:
Category : Technology & Engineering
Languages : en
Pages : 20

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Author: Khaled Mahmoud
Publisher: CRC Press
ISBN: 0203861582
Category : Technology & Engineering
Languages : en
Pages : 514

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Book Description
Recent surveys of the U.S. infrastructure‘s condition have rated a staggering number of bridges structurally deficient or functionally obsolete. While not necessarily unsafe, a structurally deficient bridge must be posted for weight and have limits for speed, due to its deteriorated structural components. Bridges with old design features that canno

Author: H. G. Russell
Publisher: Transportation Research Board
ISBN: 0309070112
Category : Bridges
Languages : en
Pages : 188

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Book Description
At head of title: National Cooperative Highway Research Program.

Author: Xudong Shao
Publisher: Elsevier
ISBN: 0443158665
Category : Technology & Engineering
Languages : en
Pages : 976

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Book Description
Innovative Bridge Structures Based on Ultra-High Performance Concrete (UHPC): Theory, Experiments and Applications introduces more than a dozen innovative bridge structures and engineering applications developed by the author's team based on UHPC. As the new bridge structure developed by UHPC can make outstanding contributions to the realization of the "carbon peaking and carbon neutrality goals" and "sustainable development," and since recent studies have shown that the application of UHPC is expected to greatly reduce the amount of materials and carbon emissions and prolong the life of the structure, this book is an ideal update on the topic. For example, after calculation, when UHPC is applied to the arch bridge with compression as the main stress characteristic, compared with the steel arch bridge, the dead weight of the UHPC arch bridge is basically the same, and the cost and carbon emission are only 34% and 20% of the latter. Ultra-high performance concrete (UHPC) as a new generation of civil structural materials has the characteristics of high strength, high toughness and high durability. Through the collaborative innovation of new materials and new structures, the application of UHPC in bridge engineering is expected to achieve the goal of economical, environmentally-friendly, durable and high performance of the main structure. - Teachers readers about the new structures and technologies in bridge engineering developed by the author's team based on UHPC - Provides relevant experimental studies and the mechanical properties of different UHPC structures - Helps users understand the design method and calculation theory of UHPC bridge structures - Covers the characteristics and advantages of new UHPC structures and technologies applied to engineering

Author: David W. Fowler
Publisher: Transportation Research Board
ISBN: 0309143543
Category : Technology & Engineering
Languages : en
Pages : 75

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Book Description
TRB's National Cooperative Highway Research Program (NCHRP) Synthesis 423: Long-Term Performance of Polymer Concrete for Bridge Decks addresses a number of topics related to thin polymer overlays (TPOs). Those topics include previous research, specifications, and procedures on TPOs; performance of TPOs based on field applications; the primary factors that influence TPO performance; current construction guidelines for TPOs related to surface preparation, mixing and placement, consolidation, finishing, and curing; repair procedures; factors that influence the performance of overlays, including life-cycle cost, benefits and costs, bridge deck condition, service life extension, and performance; and successes and failures of TPOs, including reasons for both.

Author: Dan Frangopol
Publisher: CRC Press
ISBN: 1000006816
Category : Technology & Engineering
Languages : en
Pages : 738

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Book Description
Bridge Maintenance, Safety, Management and Life-Cycle Optimization contains the lectures and papers presented at IABMAS 2010, the Fifth International Conference of the International Association for Bridge Maintenance and Safety (IABMAS), held in Philadelphia, Pennsylvania, USA from July 11 through 15, 2010.All major aspects of bridge maintenance, s

Author: Paul D. Krauss
Publisher:
ISBN:
Category : Technology & Engineering
Languages : en
Pages : 136

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Author: Satish Chandra
Publisher: Elsevier
ISBN: 081551820X
Category : Technology & Engineering
Languages : en
Pages : 451

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In spite of the increasing use and demand for lightweight aggregate concrete (LWAC), there is still a lack of adequate explanations to understand the mechanisms responsible for the strength and durability properties of LWAC. This book is written to give an overall picture of LWAC, from the historical background, aggregate production, proportioning and production of concrete, to applications in structures. Physical properties and chemical durability are described in detail. The physical properties include density, strength, shrinkage, and elasticity. Chemical durability includes resistance to acids, chloride ingress, carbonation, and freeze-thaw resistance. Fire resistance is also included, which is seldom considered, but is a very important aspect of the safety of the structure. Microstructure development and its relation to the durability properties of LWAC generally are not highlighted in the literature. The development of bonds, the microstructure with different binder systems, and different types of lightweight aggregates are explained. They show how lightweight aggregate concrete differs from normal weight concrete. The chapters on chloride ingress and freeze-thaw resistance are detailed because of the use of LWAC in offshore construction. The economical aspects of using LWAC are also reviewed. Emphasis is placed on the fact that although the cost of LWAC is high, the total cost of construction has to be considered, including the cost of transport, reinforcement, etc. When these are considered then LWAC becomes cheaper and attractive. The life cycle cost of the concrete is another consideration for calculating long-term savings on maintenance costs.

Author: Dayong Li
Publisher: Springer Nature
ISBN: 9464633360
Category : Technology & Engineering
Languages : en
Pages : 871

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Book Description
This is an open access book. As an annual conference held successfully in the past 8 years, 2023 9th International Conference on Architectural, Civil and Hydraulic Engineering (ICACHE 2023) will be held by China University of Petroleum(East China)on October 13-15, 2023 in Qingdao, China. ICACHE 2023 is hosted by China University of Petroleum(East China)and organized by College of Pipeline and Civil Engineering, China University of Petroleum(East China)and supported by China University of Mining & Technology, Beijing, Shandong University of Science and Technology, Sun Yat-sen University, Central South University, Fujian Agriculture and Forestry University, Southeast University, Eshragh Institute of Higher Education, Shandong Chambroad HoldingGroup Co., Ltd., Qingdao Times Design Co., Ltd.. The conference is an international forum for the presentation of technological advances and research results in the fields of architecture, civil and hydraulic engineering. The conference will bring together leading researchers, engineers and scientists in the domain of interest from around the world. We warmly welcome previous and prospected authors submit your new research papers to ICACHE 2023, and share the valuable experiences with the scientist and scholars around the world.

Author: Norbert J. Delatte
Publisher:
ISBN:
Category : Bridges
Languages : en
Pages : 148

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Book Description
Early age cracking of bridge decks is a national problem, and may substantially reduce service lives and increase maintenance costs. Cracking occurs when the tensile stress exceeds the tensile strength of the concrete. This is a time-dependent phenomenon, since both the stress and strength change at early ages. Moisture loss increases stress (with increasing shrinkage) and impairs strength gain. Internal curing is one method that has been suggested to reduce early age bridge deck cracking, particularly of concretes with low water to cementitious materials (w/cm) ratios. Many state highway agencies have implemented high performance concrete (HPC) for bridge decks. The low permeability of HPC is used to protect reinforcing steel and prevent corrosion. However, if the concrete cracks, then the protection may be greatly diminished. Transverse cracks due to concrete shrinkage allow water and corrosive chemicals to quickly reach the reinforcing steel causing corrosion and shortening the lifespan of the bridge deck. Reducing shrinkage cracking has been the focus of recent research into mitigation strategies. One unintended consequence of the use of high performance concrete may be early-age cracking. Field studies have shown that, in some cases, high performance concrete bridge decks have cracked less than a year after placement. The use of internal curing to reduce autogenous shrinkage was investigated in this study. One method of internal curing was through the use of coarse aggregates with high absorption capacities. Another method discussed is the use of a partial replacement of the fine aggregate with a structural lightweight aggregate with a very high absorption capacity. Bridge deck cracking is also affected by the nominal maximum size coarse aggregate. The effect on shrinkage with increasing size is discussed. ODOT's District 12, located in Northeastern Ohio, found in an investigation of 116 HPC bridge decks placed between 1994 and 2001 that bridges with little or no cracking used coarse aggregate with an absorption> 1 %, while 75 % of bridges with unacceptable cracking used coarse aggregate with absorption 1 %. This report discusses the laboratory investigation of the field results to determine the better ways to prevent bridge deck cracking-- internal curing or paste reduction by using an aggregate blend. The laboratory investigation found that the strongest effect on cracking was due to the replacement of a small maximum size coarse aggregate with an optimized coarse aggregate gradation. Increasing the coarse aggregate absorption level from