High performance concrete structural designer guide. The production of concrete blocks consists of four basic processes. Concrete mix design ppt presentation web share 20160726t. In this example, the structural design of the three retaining wall components is performed by hand. Explore prestressed concrete with free download of seminar report and ppt in pdf and doc format. Preprestressing introduction the process of induction of compressive stresses in the structure before it is put to its actual use is known as prestressing. Our new crystalgraphics chart and diagram slides for powerpoint is a collection of over impressively designed datadriven chart and editable diagram s guaranteed to impress any audience. Building technology ppts other ppts environmental engineering ppts structural engineering ppts transportation engineering ppts. As concrete hardens, its gross volume remains almost unchanged, but hardened concrete contains pores filled with water and air that have no strength. Concrete is used to make pavements, pipe, poles different structures, foundations, brickblock walls and footing for gates, fences and poles.
Concrete deterioration reinforced concrete is a very versatile construction material. Concrete is by far the most versatile and most widely used construction material worldwide. Vertical shaft kilns were replaced with rotary kilns and ball mills were used for grinding cement. Scribd is the worlds largest social reading and publishing site. The slump test is done to make sure a concrete mix is workable. Getting started with highstrength concrete, ron burg, the concrete producer, november 1993. Concrete mix design ppt presentation civil engineering. Download lightweight concrete seminar reports, abstract, pdf, ppt. Concrete is mainly composed of portland cement, aggregatefiller, water and chemical. How to present a pdf like a powerpoint presentation. Prestressed concrete prestressed concrete, invented by eugene frevssinet in 1928 is a method for overcoming concrete s natural weakness in tension. Portland cement is the most common type of cement in general usage.
Sealing exterior concrete is an optional procedure generally performed to aid in protection of concrete from freezethaw damage and chloride penetration from deicers. Lightweight concrete ppt pdf special types of concrete are those with outofthe marriott associate rate authorization form, ansi y. Self compacting concrete scc developed by professor hajime okamuraof kochi university of technology, japan, in1986 during his research, okamura found that the main cause of the poor durability performances of japanese concrete in structures was the inadequate compacting of the concrete in the casting operations. Creating a balanced mix design for high strength concrete, bryce simons, the concrete producer, october 1995, 4. Properties of concrete concrete is an artificial conglomerate stone made essentially of portland cement, water, and aggregates. It prevents the failure of concrete structures which are subjected to tensile and flexural stresses due to traffic, winds, dead loads, and. Some manufacturing plants produce only concrete blocks, while others may produce a wide variety of precast concrete products including blocks, flat paver stones, and decorative landscaping pieces such as lawn edging. Properties of concrete while cement in one form or another has been around for centuries, the type we use was invented in 1824 in britain. Concrete the word concrete comes from the latin word concretus.
Chart and diagram slides for powerpoint beautifully designed chart and diagram s for powerpoint with visually stunning graphics and animation effects. Aggregate generally a coarse aggregate such as gravel, limestone, or granite, plus a fine aggregate such as sand. Prestressed concrete free download as powerpoint presentation. Prestressed concrete member is a member of concrete in which internal stresses are introduced. Ce 437537, spring 2011 retaining wall design example 1 8 design a reinforced concrete retaining wall for the following conditions.
Pre stressed concrete prestressed concrete precast. Inspect all materials used in the construction of concrete work at their source, on the job, or both. With adobe acrobat reader, you can present a regular pdf in similar fashion to a powerpoint presentation. Pre stressed concrete structures free download as powerpoint presentation. Prestressed concrete is basically concrete in which internal stresses of a suitable magnitude and sitribution are introduced so that the stresses resulting from external loads are counteracted to a desired degress. Concrete, while hydrating, releases high heat of hydration. The hydration of cement is not a momentary action but a process continuing for long time. Dynamic photomechanics laboratory, department of mechanical, industrial and systems engineering. Theyll give your presentations a professional, memorable appearance the kind of sophisticated look that todays audiences expect. Saving your presentation as a pdf lets anyone view it, even if they dont have powerpoint. Concrete basicsaims to provide a clear, concise explanation of all aspects of making quality concrete. Pelletier,1,2 richard brown 2, arun shukla 3 and arijit bose 1,2. This comprehensive concrete manual has both the triedandtested methods and materials, and more recent innovations.
Seminor on prestressed concrete ppt free download as powerpoint presentation. Properly designed concrete structures are both strong and durable. Concrete has a very low coefficient of thermal expansion, and as it matures concrete shrinks. It covers everything you need to know about concrete along with styrofoam forming systems, fiber reinforcing adjuncts, and some architectural innovations, like architectural foam elements, that can help you offer more in the jobs you bid on. Ppt high strength concrete powerpoint presentation free. Quality of concrete can also be further assessed by giving a few tappings or blows by tamping rod to the base plate. Concrete has relatively high compressive strength, but significantly lower tensile strength. Pre stressed concrete structures prestressed concrete. Construction of a precast prestressed concrete pavement demonstration project on interstate 57 near sikeston, missouri. The concrete was cast along the entire lengths of the walls to avoid construction joints. Save powerpoint presentations as pdf files office support. Properties of concrete hydration in concrete concrete derives its strength by the hydration of cement particles.
The elasticity of concrete is relatively constant at low stress levels but starts decreasing at higher stress levels as matrix cracking develops. Dynamic photomechanics laboratory, department of mechanical, industrial and systems. Opc 43grade, river sand of zone ii and 20 mm graded crushed stone aggregate. Concrete mix design definition concrete mix design is defined as the appropriate selection and proportioning of constituents to produce a concrete with predefined characteristics in the fresh and hardened states. Properties of concrete portland cement association. Concrete conference presentations business virginia. Precast concrete precast concrete columns and wall panels provide support for beam and slab elements. Precast concrete precast concrete beams and girders provide support for slabs. Then retrieve your new file format in a matter of seconds. Determine the difference between concrete, abstract, common, and proper nouns. Pre stressed concrete free download as powerpoint presentation.
Worlds best powerpoint templates crystalgraphics offers more powerpoint templates than anyone else in the world, with over 4 million to choose from. Typically, wires or tendons are stretched and then blocked at the ends creating compressive stresses throughout the members entire crosssection. Method, road note method, british method, mix design for flexural strength. Lecture 24 prestressed concrete prestressed concrete refers to concrete that has applied stresses induced into the member. It prevents the failure of concrete structures which are subjected to tensile and flexural stresses due to traffic, winds, dead loads, and thermal cycling. Introduction concrete concrete is a composite material in which a binding material mixed in water on solidification binds the inert particles of well graded fine and coarse aggregates. A typical concrete mix reinforcement admixture air 1. Introduction, concrete and steel, reinforced concrete r. In general, concrete mixes are designed in order to achieve a defined workability, strength and durability.
Steel in strong in tension reinforced concrete uses concrete to resist compression and to hold bars in position and uses steel to resist tension. Prestressed concrete seminar report, ppt, pdf for civil. Coaction of concrete and steel in reinforced concrete 5. Inspect all materials used in the construction of concrete. It can be used to produce beams, floors or bridges with a longer span than is practical with ordinary reinforced concrete. Additional information on workability and quality of concrete can be obtained by observing the manner in which concrete slumps. Concrete used in the modern era is a mixture of water, cement, aggregates and, where required, admixtures plasticisers, superplasticisers, etc.
If you want to print out this program, the pdf file uses less computer memory and prints faster. However, concrete structures are vulnerable to a number of factors that can cause deterioration. Selfhealing concrete with a microencapsulated healing agent. Download lightweight concrete seminar reports, abstract. Concrete 1 concrete a composite material that consists essentially of a binding medium, such as a mixture of portland cement and water, within which are embedded particlesorfragmentsofaggregate,usuallyacombination of. Insert pdf file content into a powerpoint presentation powerpoint. Causes and cures of cracking in concrete david fowler joe j. The structure is quite dense and the strength exceeded 30 mpa. Characteristics and basic mechanical behaviour of concrete and steel 4. Lightweight concrete ppt pdf special types of concrete are those with outofthe marriott associate rate authorization form, ansi y 14. Ppt high strength concrete powerpoint presentation. The deformation shows the characteristics of concrete with respect to tendency for segregation. Purpose of this training the purpose of this training is to alert your employees to the. Effects of testing variables on the measured compressive strength of high strength 90 mpa concrete, nick j.
Prestressed concrete prestressed concrete concrete. The output powerpoint presentation will retain its original formatting, for you to revise and edit. However, it has characteristics and properties that may result in. It is a basic ingredient of concrete, mortar, and plaster. Concrete basicsaddresses the needs of unskilled and semiskilled persons undertaking general concreting projects including home and handyman projects. There are, however, m any variations of this procedure and a few are listed below. Highways for life, i66 precast concrete pavement demo project, david p. Use our online service to convert pdf to ppt in a heartbeat.
In scale of construction 101m we can see concrete and reinforcing steel bars, of concrete 10. Prestressed concrete is method for overcoming concrete s natural weakness in tension. Download lightweight concrete seminar reports, ppt, pdf, lightweight concrete seminar topics, abstracts, full documentation, source code. Some manufacturing plants produce only concrete blocks, while others may produce a wide variety of precast concrete products including blocks, flat paver stones, and decorative landscaping pieces such as. How to present a pdf like a powerpoint cedarville university. Lecture 3 precast concrete in building trent global. Download prestressed concrete by n krishna raju pdf book free from prestressed concrete by n krishna raju pdf. The measured slump must be within a set range, or tolerance, from the target slump. Cement commonly portland cement as well as other cementitious materials such as fly ash and slag cement. The following table will show the compression of nominal and design mixes for rcc work. Dec 16, 2016 concrete has relatively high compressive strength, but significantly lower tensile strength. Deterioration can result in loss of strength and unsafe conditions.
The desirable conditions are a suitable temperature and ample moisture. Prestressed concrete by n krishna raju pdf download free. Fulldepth precast concrete bridge deck panel systems. Insert pdf content into your presentation either as a picture that shows on your slide, or as a document that you can open during your slide show. Retaining wall design example structural engineering software. However, when reinforcement corrodes, the formation of rust leads to a loss of bond between the steel and the concrete and subsequently delamination and spalling. Winner of the standing ovation award for best powerpoint templates from presentations magazine. Go from a pptx file to a pdf document with fewer clicks. Green and sustainable, tom evans, maryland ready mix concrete assn. Cement and lime are generally used as binding materials, whereas s. The projecting reinforcing bars will bond with concrete cast on site.
389 67 1050 1134 697 412 350 1375 166 624 503 1401 1200 902 63 971 159 1415 1103 1463 741 895 657 1453 768 785 1145 335 1268 639 486 1185 376 975 599 495