From an environmental standpoint, concrete has a lot to offer the ingredients of concrete water, aggregate, and cement are abundant. Generally, steel wires or bars are used for such reinforcement, but for some purposes glass fibers or chopped wires have provided desired results. Theoretical concepts, practi cal applications, basis of. Archanaa dongre 3 1 assistant pr ofessor, vid ya jyothi in stitute of technology, hyderabad, 500081. A procedure is presented for the calculation of the key crosssectional properties of steelconcrete composite beams of complex crosssection. Portland cement concrete containing higherstrength, solid materials to improve its structural properties. Therefore, mixes are designed on an empirical basis, often with the help of trial mixes. Properties and applications offiber reinforced concrete.
The mechanical characteristics such as compressive strength, flexural strength and split tensile strength of polymer concrete with fibers were investigated. Properties of concrete concrete is an artificial conglomerate stone made essentially of portland cement, water, and aggregates. Fibrereinforced concrete for industrial construction core. The method used in the determinations for marble was the same as had been used for concrete.
Reinforced concrete is a strong durable building material that can be formed into many varied shapes and sizes ranging from a simple rectangular column, to a slender curved dome or shell. 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. The inclusion of additional jointing, at a shorter spacing, is a necessary component of a good unreinforced slab plan. Low cost weathering and fire resistance good compressive strength formability all these criteria make concrete an attractive material for wide range of structural applications such as buildings, dams, reservoirs, tanks, etc. Mechanical properties of highstrength fiber reinforced concrete. The problem arises however that more joints are generally not a good solution for a floor subject to.
Pdf mechanical properties of highstrength fiber reinforced. Practical design guide for reinforced concrete grc. The objective of the mix design is to assure that the product has speci. The deterioration of the mechanical properties of yield strength and modulus of elasticity is considered as the primary element affecting the performance of steel structures under fire.
Cip 33 high strength concrete what is high strength concrete it is a type of high performance concrete generally with a specified compressive strength of 8,000 psi 55 mpa or greater. Concrete basicsaddresses the needs of unskilled and semiskilled persons undertaking general concreting projects including home and handyman projects. Analysis and design pdf book free online from reinforced concrete structures. Portland cement is the commonly used type of cement for production of concrete. Routine standard tests for fresh concrete include workability, air content, and matu rity. Properties of reinforced concrete steel rebars exposed to high temperatures article pdf available in research letters in materials science 2008. Investigation into the mechanical properties of structural lightweight. Two different mixes determined the effect of adding roadcem in terms of compressive and flexural strengths, breaking strain, thermal expansion and contraction behaviour. Mechanical properties of mixed steel fiber reinforced concrete with. Reinforced concrete rc also called reinforced cement concrete or rcc is a composite material in which concrete s relatively low tensile strength and ductility are counteracted by the inclusion of reinforcement having higher tensile strength or ductility. The concrete on the top crushes before the steel yields brittle the steel yields before concrete crushes ductile the concrete will fail in compression at a concrete strain of 0. Concrete is an ideal medium for recycling waste or industrial byproducts. Effect of aggregates on conductance of masonry walls. Grc materials have been widely used for a number of years and their properties and characteristics studied extensively.
Introduction to concrete portland cement association. Msc postgraduate, department of civil engineering, islamic azad. Pdf reinforced concrete design or reinforced cement. It was named portland cement because it looked like the. Abstract the paper intends to analyze and study the features of steel fiber reinforced concrete sfrc and plain concrete that contains. Thermal properties of concrete thermal properties of concrete. Moment of inertia method i gross concrete section only find moment of inertia of gross concrete section see table 11. The mechanical properties of concrete are dependent on many factors, such as the characteristics of the raw materials used, the curing conditions and the local concrete practice, which may vary from place to place. The fundamental properties of building materials include.
Today compressive strengths exceeding 20,000 psi 140 mpa have been used in castinplace buildings. Properties of reinforced concrete steel rebars exposed to. Inspect all materials used in the construction of concrete work at their source, on the job, or both. For construction purposes, the initial set must not be too soon and the final set must not be too late. Experimental study on basic mechanical properties of basalt.
These effect are varied and always vividly spread on the surface of concrete. Concrete is the preferred construction material for a wide range of civil engineering structures and regardless. Concrete properties consist of three basic components. Concrete can be made from local resources and processed near a jobsite.
The properties of concrete depend on the selection and proportioning of component materials, as well as handling, placement, compaction. Radius of gyration concrete masonry units 24 problem. Properties of concrete reinforced with different kinds of industrial waste fibre materials article pdf available in construction and building materials v. Pdf properties of fibre reinforced concrete made with discarded. Reinforced concrete rc is a composite material in which concrete s relatively low tensile strength and. Static and dynamic analysis of reinforced concrete shells. Tension types and properties of steel reinforcement chapter 4. Pdf reinforced concrete design theory and examples. Setting time cement paste setting time is affected by a number of items including. The toughness and crack resistance performance of basalt fiber reinforced concrete were evaluated by the fracture energy, advanced toughness. Structural concrete structures reinforced concrete construction. In this study, hotrolled s220 and s420 reinforcement steel rebars were subjected to high temperatures to investigate the fire performance of these materials. Pdf properties of concrete reinforced with different.
Structural properties of concrete linkedin slideshare. The steel will yield at a steel strain of fyes or a steel stress of fy. Conductivity of insulated monolithic walls as affected by moisture. The tested properties of the concrete included slump, air content, unit weight, and setting time according to astm c143, c231, c8, and c403,, respectively. Chapter 1 properties of reinforced concrete strength of. Mix proportions and mechanical properties of concrete. The mechanical properties measured in other places cannot be directly applicable to hong kong. About four tons of concrete are produced per person per year worldwide and about 1.
Compressive strength of concrete is the most important properties of concrete the characteristic strength that is concrete grade is measured by 28day cylindercube strength. Activity kit 1 concrete construction 10 concrete states. Rashid, debashis mallick and tozammel haque department of civil engineering, khulna university of engineering and technology, khulna, bangladesh email. N a ccr h b d nas concrete beam 26 jkm cracking of the concrete in tension. Pdf this research paper investigates the physical, chemical and mechanical properties of steel slag aggregates ssa, gravel aggregates. The paste is composed of cement, water, and entrained air and ordinarily constitutes 20 to 40 percent of the total volume. Fibbers were compared with conventional reinforcementin flexure, tesion and compression.
Reinforced concrete design two days, 15 hours based on the aci 31808 building code 2488483754 day one materials properties concrete and reinforcing steel properties relevant to structural concrete design strength design method basic principles for strength design load factors and load combinations. Heavy loads in building s such as warehouses include moving load s, stationary live loads, and wall loads. Part a desirable concrete properties basic consideration concrete composition concrete is a mixture of aggregate and often controlled amounts of entrained air held together by a hardened paste made from cement and water. Static and dynamic analysis of reinforced concrete shells 11 latin american journal of solids and structures 1020 1109 14 stress or geometric stiffness matrix where stress components matrix. Fiber reinforced concrete frc is a new structural material which is gaining increasing importance. Concrete basicsaims to provide a clear, concise explanation of all aspects of making quality concrete. Effects of aggregate types on thermal properties of concrete milon k. The fresh concrete properties were recorded for each batch. Ncma tek 141b section properties of concrete masonry walls based on average properties of assemblage per code 4. Reinforced concrete structures explains the underlying principles of reinforced concrete design and covers the analysis, design, and detailing requirements in the 2008 american concrete institute aci building code requirements for structural. This combination or mixture, when poured, hardens into this durable material called concrete that we are all familiar with. Cement, usually in powder form, acts as a binding agent when mixed with water and aggregates.
These books are used by students of top universities, institutes and colleges. Chapter 1 properties of reinforced concrete free download as powerpoint presentation. Concrete definition, components, grades, manufacture. Article pdf available january 2010 with 2,251 reads. The novel feature of the procedure is the use of functions to describe the shape of the different elements in a. This paper presents findings from a preliminary study to assess the structural and material properties of a nonstandard, concrete type mix containing roadcem, a traditional soil stabilising additive. Over 10 million scientific documents at your fingertips. Crosssectional properties of complex composite beams. Standard cylinder 150x300 mm or 150x100 cube with aggregate size of which is not exceeding 25mm is used to determine the strength. Although there are other kinds of cement, the word cement, in common usage, refers to portland cement.
Components of concrete concrete is made up of two components, aggregates and paste. A concrete material model may be calibrated on the basis of material parameters deter. Different volumes, lengths, orintations and types of fibers were used. Its utility and verstatility is achieved by combining the best features of concrete and steel. Concrete technology deals with study of properties of concrete and its practical applications. Introduction to concrete concretess versatility, durability, sustainability, and economy have made it the worldss most widely used construction material. Thermal properties of a concrete can be defined as the effect of the heat and high temperature on the concrete. All concrete mixtures were mixed for 5 min in a laboratory pan mixer. Quantitative properties may be used as a metric by which the benefits of one material versus another can be assessed, thereby helping in materials selection. The term concrete refers to a mixture of aggregates, usually sand. Mechanical properties of concrete and mortar reinforced with randomly distributed smooth steel fibers were investigated to understand the mechanism of fiber reinforcing. Mechanical properties of precast reinforced concrete slab. Unreinforced concrete cracks at all thickenings, ends of embedded steel, bollards, pit corners and down the middle of aisles. Reinforced concrete is one of the principal building materials used in engineered structures because.
Reinforced concrete article about reinforced concrete by. Reinforced concrete is a strong durable building material that can be formed into many varied shapes and sizes ranging from a simple rectangular column, to a. Elasticity concrete testing strength and durability versatility thermal mass albedo effect manufacturing and use of concrete maintenance of concrete fire resistant cost results and. Some of these effect can be scrutinized materially and some are quite abstract. Properties and applications offiber reinforced concrete faisal fouad wafa associate professor, civil engineering department, faculty ofengineering, king abdulaziz university, jeddah, saudi arabia. Pdf properties of reinforced concrete steel rebars.
1214 1171 955 1028 1001 1583 1051 883 155 364 1316 498 1504 1575 1221 155 979 473 1438 1488 754 723 1605 348 1480 1102 417 321 47 816 1152 1588 1026 1475 1556 1509 492 235 1149 272 1335 1426 1460 1167 1490 101 38 205 587