Book Name: FRP Composites for Reinforced and Prestressed Concrete Structures
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Ebook Particulars :
Language English
Pages 348
Format PDF
Dimension 7.40 MB

 

FRP Composites for Reinforced and Prestressed Concrete Structures


 

PREFACE:

Fiber-reinforced polymer (FRP) is a standard time period utilized by the civil engineering neighborhood for high-strength composites. Composites have been utilized by the house and aerospace communities for over six many years and using composites by the civil engineering neighborhood spans about three many years.

Within the composite system, the power and the stiffness are primarily derived from fibers, and the matrix binds the fibers collectively to kind structural and nonstructural elements. Composites are identified for their excessive particular power, excessive stiffness, and corrosion resistance.

Restore and retrofit are nonetheless the predominant areas the place FRPs are used within the civil engineering neighborhood. The sphere is comparatively younger and, subsequently, there’s appreciable ongoing analysis on this space. American Concrete Institute Technical Committee 440 paperwork are wonderful sources for the most recent info.

The first goal of this e-book is to introduce the reader to the fundamental ideas of repairing and retrofitting strengthened and prestressed concrete structural components utilizing FRP. Primary materials properties, fabrication methods, design ideas for strengthening in bending, shear, and confinement, and area analysis methods are offered.

 

The e-book is geared towards superior undergraduate and graduate college students, skilled engineers, area engineers, and person companies similar to numerous departments of transportation. A lot of flowcharts and design examples are offered to facilitate simple and thorough understanding. Since it is a very energetic analysis area, a few of the newest methods similar to near-surface mounting (NSM) methods should not coated on this e-book.

Relatively, the intention is to offer the basics and primary info. The chapters within the e-book are organized utilizing the sequences adopted in textbooks on strengthened concrete. Chapter 1 gives the introduction, transient state of historical past, typical area purposes, and references to acquire the most recent info.

In Chapter 2, the properties of frequent sorts and types of fiber reinforcement supplies and resins are offered. Temporary descriptions of the 4 primary kinds of hybrids are additionally mentioned.

Chapter 3 offers with the strategies to organize laminate samples, together with resin mixing, hand lay-up approach, vacuum bagging, curing strategies, density willpower, and laminate slicing.

Chapter 4 gives the fundamental info on the properties of fibers and matrices used for the composite, conduct of beams and columns strengthened with the composites, design philosophies, and latest advances.

The most well-liked makes use of are for (i) strengthening of strengthened and prestressed concrete beams for flexure, (ii) shear strengthening of strengthened and prestressed concrete beams, (iii) column wrapping to enhance the ductility for earthquake-type loading, (iv) strengthening of unreinforced masonry partitions for inplane and out-of-plane loading, (v) strengthening for improved blast resistance, and (vi) restore of chimney or related one-of-a-kind buildings.

Chapter 5 offers with the procedures to research the strengthened concrete and strengthened beams and to estimate the required additional reinforcement. Despite the fact that wonderful books can be found for strengthened concrete design, the flexural conduct of beams is defined briefly to offer continuity within the thought course of, particularly within the space of tensile force-transfer from additional reinforcement to the beam.

Chapter 6 offers with the procedures to research prestressed concrete and strengthened beams and to estimate the required additional reinforcement. Beams with each bonded and unbonded tendons are coated. Right here once more, the flexural conduct of beams is defined briefly to offer continuity within the thought course of, particularly within the space of tensile forcetransfer from additional reinforcement to the beam.

 

Chapter 7 presents the design procedures for shear strengthening of beams. It additionally presents a abstract of the provisions used for strengthened and prestressed concrete, the schemes used for composite common pointers, stress and pressure limits, design procedures, and examples.

As within the case of different chapters, the reader is referred to texts on strengthened concrete for detailed discussions on mechanisms and provisions. Chapter 8 encompasses restore and retrofitting of columns. Right here, the first contribution of FRP is for confinement of concrete and the ensuing improved ductility of columns.

The commonest retrofits are geared toward bettering the earthquake resistance of columns. Chapter 9 gives a way for effectively and precisely assessing, in situ, the structural adequacy of strengthened and prestressed concrete constructing elements.

The rules enable the engineer to find out whether or not a selected portion of a construction has the mandatory capability to adequately resist a given loading situation. These pointers set up a protocol for full-scale, in situ load testing together with planning, executing, and evaluating a testing program, which is able to help the engineer in implementing an environment friendly load take a look at.

We wish to inform the readers that the tables and figures will not be precisely the identical as these offered within the sources cited; modifications had been made to enhance readability. A number of the illustrations have been taken from authentic experiences, however the references cited had been usually printed papers.

 

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