In the previous unit, you have studied different concreting operations, concreting formwork, types of joints in concrete. Reinforced concrete may also be permanently stressed concrete in compression, reinforcement in tension, so as to improve the behaviour of the final structure under working loads. Nov 12, 2017 this video discusses the different types of portland cement, blended cements, and some alternative cements. These concretes do have advantages as well as disadvantages. Many types of premixed concrete are available which include powdered cement mixed with an aggregate, needing only water.
Special concrete types and applications of special concrete. Concrete is an artificial stone which is obtained after hardening the homogenous mixtures of cement, water, aggregates and sometime admixture andor additive to modify the fresh and hardened concrete. Concrete mixes can also be designed using software programs. Here you can download the free lecture notes of concrete technology pdf notes ct pdf notes with multiple file links to download. Light weight concrete high density concrete plum concrete no fines concrete aerated. Special types of concrete portland cement association. Lightweight concrete is prepared from the following materials. Special types of concrete are those with out of theordinary properties or those produced by unusual techniques. In addition to normal concrete, other varieties in use are, high strength and high performance concrete, self compacting, light weight, high density, fibre reinforced, polymer, coloured concrete etc. May 06, 2018 different types of concrete have been developed for application in various types of construction works. Understand the types of postinstalled anchors and their function. A hollow unit is that unit which has core void area greater than 25% of the gross area. Some special properties increased compressive and tensile strength, water proofing, and improved chemical resistance are achieved with polymers, either as admixtures or surface treatment of hardened concrete. The proportions between the sorts aggregates and their quantities are establishing in table 5, so the grading curve of the final aggregate could be into the grading zone which was prescript.
This video discusses the different types of portland cement, blended cements, and some alternative cements. Concrete is a composite material, comprising a matrix of aggregate typically a rocky material and a binder typically portland cement or asphalt, which holds the matrix together. In todays modern world of concrete, performance parameters are no longer solely restricted to the materials 28 day compressive strength. Concrete is by definition a composite material consisting essentially of a binding medium and aggregate particles, and it can take many forms. The properties of cement during hydration vary according to. The ratio of essential constituents may be varied within wide limits. It is formed from argillaceous, siliceous, calcareous etc. We collected most searched pages list related with types of special. These are the concrete blocks either hollow or solid. Cive 525 special types of concrete special types of concrete using portland cement architectural. This special commercial technique has been used for massive repairs, particularly for underwater repairs of piers and abutments. In reinforced concrete buildings, the vertical elements are usually either momentresisting frames or.
Light weight concrete is a special concrete which weighs lighter than conventional concrete. Taking concrete forward free resource for specifiers concrete quarterly publications. Concrete basicsaims to provide a clear, concise explanation of all. Pdf special purpose concrete products from waste tyre. Special concrete in construction civil engineering. Discy latest articles 8 types of concrete finishes pdf. Many special types of concrete are made with portland cement as a binding medium. Sometimes, it may be of great importance to enhance one of the ordinary properties. Cement is a binding material used to bind different type of construction materials together. Different types of concrete are produced based on the constituent material, mix design, the method of construction, area of application, form of hydration reaction.
Lightweight concrete ppt pdf special types of concrete are those with outofthe marriott associate rate authorization form, ansi y. Special types of concrete special types of concrete are essentially those with unique physical properties or those produced with unusual techniques andor reproduction processes. Overview concrete is most vital material in modern construction. View notes 6 special type of concrete 1 from cive 525 at american university of beirut. Special concrete in construction special concrete are concrete for special purpose for increased strength and durability for various construction applications. Table 181 lists many special types of concrete made with portland cement and some. Special purpose concrete products from waste tyre recyclates the ways in which concrete properties are influenced by waste tyre recyclates, used as secondary raw materials, are presented in the paper. What are the differences in these cement types and how are they tested, produced, and identified in practice.
Chemical composition degree of fineness it is possible to manufacture different types of cement by changing the percentages of their raw materials. Certain cement manufacturing plants only produce certain types of portland cement. Special concretes and types and applications of special. They may be used for both load bearing as well as non load bearing walls. A second coloring method is to apply paint, colored coating, or pigmented stain to the concrete after it has cured.
It is one of the most commonly used types of concrete. Modern reinforced concrete can contain varied reinforcing materials made of steel, polymers or alternate composite material in conjunction with rebar or not. Concrete has a great variety of applications because it not only meets structural demands but also lends itself readily to architectural treatment. Various types of concrete have been developed for specialist application and have become known by these names.
Types of cement and their uses 12 types civilology. Special concrete in todays modern world of concrete, performance parameters are no longer solely restricted to the materials 28 day compressive strength. Concrete technology notes pdf ct notes pdf eduhub sw. Frequently, concrete may be used for some special purpose for which special properties are more important than those commonly considered. In this type of concrete, the essential constituents are cement, sand and coarse aggregates designed, and mixed with a specified quantity of water. A guide for practicing engineers the basic structural elements of an earthquakeresistant building are diaphragms, vertical framing elements, and the foundation. Although each may be used by itself to answer a special construction need, some may be used with other standard or special types to achieve special esthetic or functional. Polymer concrete may be classified into the following four groups.
Special concretes pdf in the general use of the word concrete, the idea implied is the conventional. Details of these various types of concrete, their properties and applications are discussed. Special types of concrete building materials concrete. A very commonly used mix design, commonly known as nominal mix design, is 1. Log in to save your progress and obtain a certificate in alisons free diploma in carpentry studies online course. A typical concrete mix reinforcement admixture air 1. In concrete technology, a variety of typenames has been used for different types of concrete. The concrete that is obtained by mixing the basic ingredients cement, water and aggregate will give us normal.
This term is given to a special method of mortar placement. Special types of concrete are those with outoftheordinary properties or those produced by unusual techniques. Seismic design of castinplace concrete special structural. Despite the common usage of concrete, few people are aware of the considerations involved in designing strong, durable, high quality concrete. Introduction of a mineral powder as a type of natural cementitious material in concrete. In addition to normal concrete, other varieties in use are, high strength and high performance concrete, self compacting, light weight, high. Special types of concrete special types of concrete. Many types of concrete are available, determined by the formulations of binders and the types of aggregate used to suit the application for the material. In concrete, the most commonly used is portland cement, a. Beyond strength and durability, there may be other properties of concrete that are desirable on any given project. Oberlender professor emeritus oklahoma state university. Density of this concrete is considerably low 300 kgm3 to 1850 kgm3 when compared to normal concrete 2200kgm3 to 2600kgm3.
The concrete technology notes pdf ct notes pdf book starts with the topics covering portland cement, mineral and chemical admixtures, classification of aggregate, factors affecting workability, water cement ratio, compression tests, factors in the choice of mix. Specifying visual concrete elaine toogood bahons grad dip arch riba senior architect, the concrete centre the concrete centre. Such software provides the user an opportunity to select their preferred method of mix design and enter the material data to arrive at proper mix designs. By twisting this internal mix ratio and by altering the chemical inputs, special types of cement can be produced according to the needs. Special concrete is defined as concrete which meets special performance an uniformity requirements that cannot always be achieved routinely by using only conventional materials and normal mixing, placing and curing practices.
That can be achieved by adding admixtures to the concrete. Here we learn about mass concrete, high strength hi performance, rrc. Peurifoy late consulting engineer austin, texas garold d. A number of special cements are now available to the concrete construction industry. Special cements and their uses concrete construction. Log in to save your progress and obtain a certificate in alisons. Seismic design of castinplace concrete special structural walls and coupling beams. Admixtures for coloring concrete are available in all colors. It is usually used to repair surface areas where concrete. Influence of different types of fiber on the properties of recycled aggregate concrete. There are, however, m any variations of this procedure and a few are listed below. Special concrete means the concrete used or made for special cases, such as. Different types of concrete by nice engineering youtube. Concrete is by definition a composite material consisting essentially of a bin.
Construction documents often specify a cement type based on the required performance of the concrete or the placement conditions. Regular concrete can typically withstand a pressure from about 10 mpa 1450 psi to 40 mpa 5800 psi, with lighter duty uses such as blinding concrete having a much lower mpa rating than structural concrete. Because of the random and 3d orientation, very few of the fibres actually are able to resist tensile loads that develop in a specific direction. In this unit, you will study special types of concrete and concreting methods under extreme environmental conditions. Different types of cements can be used as binding material. Introduction these are the concrete blocks either hollow or solid. Special concrete are concrete for special purpose for increased strength and durability for various construction applications.