FEM of concrete structures strengthened with FRP laminates

Báo cáo khoa học: "Dose volume histogram analysis of normal structures associated with accelerated partial breast irradiation delivered by high dose rate brachytherapy and comparison with whole breast external beam radiotherapy fields" potx

Báo cáo khoa học:
... received by 20 cc and 30 cc of the whole heart volume (the D20 and D30 respectively) was measured The volume of the heart receiving a dose of Gy and higher, 10 Gy and higher and 20 Gy and higher ... lower volume of the heart and lung to higher doses than EBRT The volume of lung irradiated to lower doses was similar with both techniques However, the volume of heart irradiated to lower doses ... [18] Dose comparisons have also been made between patients undergoing whole breast external beam radiotherapy (EBRT) and ABPI, simulating the position of a MammoSite catheter within the breast...
  • 11
  • 68
  • 0

considerations for design of concrete structures subjected to fatigue loading

considerations for design of concrete structures subjected to fatigue loading
... microcracking as compared to fracture of concrete under incorporates the influence of range of loading For a zero static loading. 3,4 4Fatigue strength of concrete for a life of ten minimum stress ... guide for design for concrete structures subjected to fatigue loading However, this report does not contain the type of detailed design procedures sometimes found in guides Chapter presents information ... reinforcement in concrete structures However, the trend in concrete structures toward use of ultimate strength design procedures and higher yield strength reinforcement makes fatigue of reinforcing...
  • 24
  • 137
  • 0

guide for evaluation of concrete structures prior to rehabilitation

guide for evaluation of concrete structures prior to rehabilitation
... STRATIFICATION STRUCTURAL PERFORMACE UNIFORMITY OF CONCRETE 00 0 l 0 l 00 l l 364.1R-13 EVALUATION OF STRUCTURES PRIOR TO REHABILITATION Table 6.2 -Evaluation of properties of reinforcing steel PROPERTIES ... EVALUATION OF STRUCTURES PRIOR TO REHABlLlTATlON 437R B-14 SP-85 Strength Evaluation of Existing Concrete Buildings History of Concrete Rehabilitation, Renovation, and Preservation of Concrete ... used for evaluation of concrete structures prior to rehabilitation The procedures should be used as a guide and are not intended to replace judgment by the engineer responsible for the evaluation...
  • 22
  • 101
  • 0

LEAN DUPLEX STAINLESS STEELS—THE ROLE OF MOLYBDENUM IN PITTING CORROSION OF CONCRETE REINFORCEMENT STUDIED WITH INDUSTRIAL AND LABORATORY CASTINGS

LEAN  DUPLEX  STAINLESS  STEELS—THE  ROLE  OF  MOLYBDENUM  IN  PITTING  CORROSION  OF CONCRETE  REINFORCEMENT  STUDIED  WITH  INDUSTRIAL  AND  LABORATORY  CASTINGS
... low alloy duplex stainless steels (DSS) thường gọi thép lean duplex steel, làm tăng thêm tính đa dạng thép sử dụng gia cố bê tông Những loại DSS với thành phần Ni Mo thấp, tác động kinh tế thấp ... ăn mòn rỗ nhiều báo gần đây, Alvarez đồng nghiên cứu hoạt động ăn mòn hai loại tôn sóng lean duplex stainless steels (SAF 2001 2304) Thử nghiệm 2.1 Vật liệu Bốn DSS nạc khác với hai nồng độ khác ... hợp kim hiệu đóng vai trò quan trọng kháng ăn mòn rỗ DSS, người ta phải xem xét PREn biểu theo kinh nghiệm đề xuất từ danh mục kết thực nghiệm thu điều kiện cụ thể định, chủ yếu giải pháp clorua...
  • 4
  • 70
  • 0

Life cycle cost design of concrete structures

Life cycle cost design of concrete structures
... based Design 1.3 Service Life of Concrete Structures 1.4 Life Cycle Cost Based Design for Concrete Structures 1.5 Scope of Work 1.6 Objectives CHAPTER TWO – LITERATURE REVIEW 2.1 2.2 2.3 Service Life ... magnitude of costs for any economic analysis 1.4 Life Cycle Cost Based Design for Concrete Structures From a structural design point of view, the major costs of significance pertain to the initial costs ... structural design, the economic implications of the overall lifetime costs can be effectively evaluated by the use of techniques such as life cycle costing 1.3 Service Life of Concrete Structures...
  • 89
  • 39
  • 0

design and construction of circular prestressed concrete structures with circumferential tendons

design and construction of circular prestressed concrete structures with circumferential tendons
... 1.2—Objective The objective of this report is to provide guidance in the design and construction of circular prestressed concrete structures circumferentially prestressed using tendons 1.3—Scope The ... facilitate placement of the concrete without segregation (a) 10 in for cast-in-place concrete walls with internal circumferential tendons, with or without vertical tendons, and with conventional ... precast concrete walls with internal circumferential tendons, and with vertical tendons or mats of nonprestressed vertical reinforcement (d) in for precast concrete walls with internal circumferential...
  • 26
  • 114
  • 0

guide for the design and construction of concrete reinforced with frp bars

guide for the design and construction of concrete reinforced with frp bars
... 8—FLEXURE The design of FRP reinforced concrete members for flexure is analogous to the design of steel -reinforced concrete members Experimental data on concrete members reinforced with FRP bars show ... in addition to the steel reinforced cross section: two sections reinforced with GFRP bars and one reinforced with CFRP bars For the section experiencing GFRP bars rupture, the concrete dimensions ... guidelines for reinforced concrete structures and provide engineers and building officials with assistance in the specification, design, and construction of concrete reinforced with FRP bars In...
  • 42
  • 159
  • 0

guide for the design and construction of externally bonded frp systems for strengthening concrete structures

guide for the design and construction of externally bonded frp systems for strengthening concrete structures
... can be computed by taking the first moment of the areas of the transformed section The transformed area of the FRP may DESIGN AND CONSTRUCTION OF EXTERNALLY BONDED FRP SYSTEMS 440.2R-25 Fig 10.1—Typical ... as to develop the strength of the FRP system The development length is a function of the strength of the substrate and the rigidity of the bonded FRP Durability, FRP The ability of a material ... to the plane of the FRP laminate For an FRP system installed according to Part of this guide, the weak link in the concrete /FRP interface is the concrete The soundness and tensile strength of the...
  • 45
  • 115
  • 0

control of cracking in concrete structures

control of cracking in concrete structures
... restraint needed for shrinkage-compensating concrete To take full advantage of the expansive potential of shrinkage-compensating concrete in minimizing or preventing shrinkage cracking of exposed concrete ... use of shrinkage-compensating concrete are contained in ACI 223R CHAPTER 4 CONTROL OF CRACKING IN FLEXURAL MEMBERS 4.1—Introduction The control of cracking can be as important as the control of ... found in ACI 209R Cracking due to drying shrinkage can never be eliminated in most structures This chapter covers cracking of hardened concrete due to drying shrinkage, factors influencing shrinkage,...
  • 46
  • 107
  • 0

erosion of concrete in hydraulic structures

erosion of concrete in hydraulic structures
... detailing of the terminus of the stilling basin and the exit channel, so as to maximize flushing of the stilling basin and to minimize chances of debris from the exit channel entering the basin Maintain ... observance of any erosion of concrete should be included in these inspections The frequency of inspections is usually a function of use and evidence of distress The inspections provide a means of routinely ... baffles, resulting in significant localized damage to EROSION OF CONCRETE IN HYDRAULIC STRUCTURES 210R-7 concrete to maximum depths of 23 in (580 mm) was caused by rocks up to 18 in (460 mm) in diameter,...
  • 24
  • 126
  • 0

Xem thêm

Nạp tiền Tải lên
Đăng ký
Đăng nhập