General use of the portland cement, siliceous astm. Health and safety data sheet for common cements and. Ordinary portland cement is the most common cement used in general concrete construction when there is no exposure to sulphates in the soil or groundwater. For constructional purposes, the meaning of the term cement is restricted to the bonding materials used with stones, sand, bricks, building stones, etc. The united nations mission in the republic of south sudan unmiss has a requirement for the provision of ordinary portland cement in juba, republic of south sudan and hereby solicits expression of. Also responsible for grey colour of ordinary portland cement. Portland cement is the most common type of cement in general use around the world as a basic ingredient of concrete, mortar, stucco, and nonspecialty grout. Cement in the most general sense of the word, a cement is a binder, a substance that sets and hardens independently, and can bind other materials together.
The principal raw materials used in the manufacture of ordinary portland cement are. An odourless white to grey powder slightly soluble in water. Opc is one of the most commonly and widely used type of cement in the world. Every tonne of ordinary portland cement opc produced releases. Portland cement association ordinary portland cement opc. Tiger cement limited is one of the best maintained companies for exporting ordinary portland cement from pakistan and is managed by qualified and expert cement field specialists.
The 3 primary constituents of the raw materials used in the manufacture of portland cement are. October 2011 health and safety information portland cement. Blended cement is a better alternative to ordinary portland cement as. Rapid hardening cement is 80411990 as the name indicates it develops strength rapidly and. Cement used in construction is characterized as hydraulic or nonhydraulic. Importance of portland pozzolana cement ppc for durable. About the cover over the last twenty two years, kohat cement has continued to catch the trade winds and slice through the waves to reach the greater shores. Kalpana 2 1department of chemistry, holy cross college of arts and science, trichy. Pioneer opc, besides its exceptional strength, is specially designed for.
Raw mix design for ordinary portland cement amala fathima rani 1, s. Portland cement is composed of 9095% clinker and up to 5% of minor additional constituents. Emerging energyefficiency and co2 emissionreduction. As other has pointed out, it got it name from the portland uk stone which is pretty gray and dark, this they name the cement after it. Ordinary portland cement constituents, properties, types. Some of the raw materials used to manufacture cement are limestone, shells, and chalk or marl, combined with shale, clay, slate or blast furnace slag, silica sand. Importance of portland pozzolana cement ppc for durable construction 1. Lime and silica make up approximately 85% of portland cement.
This type of cement is an ideal building material for almost all structural work including all kinds of concrete construction. Ordinary portland cement results from the calcination of limestone and silica in the following reaction. This can be the reason why cement is used to stabilize a wide range of soils. Health and safety data sheet for common cements and cement products 1. All the discussions that we have done in the previous chapter and most of the discussions that are going to be done in the coming chapters relate to opc. Joseph aspdin first made portland cement in his kitchen stove in england in the 19th century. We offer ordinary portland grey cement under brand name kohat cement. Pdf this study compares the quality of different brands of ordinary portland cement opc available in bangladesh.
Opc is just cement, the one we used today in construction. Cem i cement cisfb october 2011 yq2 portland cement l page 1 1. Cement, commonly used for normal construction work, is known as ordinary portland cement. Gb 1751999 portland cement and ordinary portland cement text of document is in chinese this standard specifies the definitions, marks, requirements for the materials, the grades of intensity, technical requirements, testing methods, inspection rules, packaging, transportation and storage. Pozzolana is an artificial or natural material which has silica in it in a reactive form. Bfs composites of different concentrations and the nirex reference vault backfill nrvb. Limestone calcium carbonate is heated in a kiln with other components. Pca the portland cement association americas cement. The article presents the optimization of a raw mix for the production of portland cement clinker using the method of linear programming so as to minimize the cost of raw material for a required clinker quality. Gb 1751999 portland cement and ordinary portland cement.
Other types of cement products may be added to the scope of. These compounds interact with one another in the kiln to form a series of more complex products and, apart from a small residue of uncombined lime which has not had. Ordinary portland cement standards and specifications. Ordinary normal portland cement is one of the most widely used type of portland cement. Portland cement is b y far the most common type of cement in general use around the world. Data sheet health and safety information portland cement bs en 1971. Pdf chemical analysis of ordinary portland cement of bangladesh. The name portland cement was given by joseph aspdin in 1824 due to its similarity in. This ignorance is not just with block moulders, artisans etc. Argillaceous or silicates of alumina in the form of clays and shales. Ordinary portland cement tests, properties, manufacture.
The development of modern portland cement sometimes called ordinary or normal portland cement. Calcareous or calcium carbonate, in the form of limestone, chalk and marl which is a mixture of clay and calcium carbonate. With the use of grey cement only red or brown cement can be produced. This guide is applicable to cem i portland cement in accordance with bs en 1971. Microstructure characterisation of ordinary portland. The materials that are commonly used are limestone, shells, chalk, shale, clay, slate, silica sand, and iron ore. The most versatile cement product used for a wide range of applications, including general civil engineering and construction works, smaller works and plastering mortar. Some of the raw materials used to manufacture cement are limestone, shells, and chalk or. Ordinary portland cement and its composition building. This standard applies to ordinary portland and blended cements of the following types. Approximate oxide composition limits of ordinary portland cement oxide per cent content cao 6067 sio2 1725.
It gives better performance of concrete in terms of. Ordinary portland cement ordinary portland cement opc is by far the most important type of cement. Prior to 1987, there was only one grade of opc which was governed by is 2691976. Ordinary portland cement constituents, properties, types and uses. Cements composition, types finish up cement manufacture properties of component phases types of cements chapter 2 properties of concrete neville chapter 6 concrete. Ordinary portland cement 2 test parameters method range of iraq standard no,iqs5. Aspects of attack of ordinary portland cement by chloride, sulphate and organic species and reaction with active silica in aggregate are described together with the potential for microbial degradation. Lafarge portland cement cement safety data sheet according to federal register vol. Ordinarynormal portland cement is one of the most widely used type of portland cement. Opc is a mixture of calcium carbonate, silica, iron, and alumina. Along with pozzolanic materials in specific proportions, ppc also contains opc clinker and gypsum. Pdf this researchstudies the determining the characteristics of different types of cement available in iraq and comparing between themby.
Prevent material from entering sewers, drains, ditches or waterways. Crs 1, ordinary portland cement, crs 2, rapidhardening portland cement, crs 3, blended hydraulic cement, crs 4, composite cement, crs 5, pozzolan cement, and crs 6. Ordinary portland cement is suitable for general purpose buildings, shot concrete, civil engineering works, etc. Portland cement was developed from natural cements made in britain beginning in the middle of the 18th century. Its name is derived from its similarity to portland stone, a type of building stone quarried on the isle of portland in dorset, england. The opc is mostly used to distinguish modern cement. Influence of grout and cement on groundwater composition. Ordinary portland cement is one of the most widely used type of cement. A variety of techniques have been employed to study the structure, composition and phase distribution of ordinary portland cement opc, opcblast furnace slag opc. Recent progress in green cement technology utilizing low. In order to promote public education and public safety, equal justice for all, a better informed citizenry, the rule of law, world trade and world peace, this legal document is hereby made available on a noncommercial basis, as it is the right of all humans to. However, for use under specific conditions a variety of ordinary portland cement and its composition are available these days.
Types of portland cement portland cement is a closely controlled chemical combination of calcium, silicon, aluminum, iron and small amounts of other compounds, to which gypsum is added in the final grinding process to regulate the setting time of the concrete. The grinding of clinker to fine powder that produces portland cement will react with water to. Unlike ordinary portland cement, portland pozzolana cement ppc is manufactured by combination of pozzolanic materials. Chemical composition of portland cement the raw materials used in the manufacture of portland cement consist mainly of lime, silica, alumina and iron oxide. Opc ordinary portland cement psc portland slag cement so 2 sulfur dioxide psi pounds per square inch tpd tons per day u. Cement reaction is not dependent onsoil minerals, and the key role is its reaction with water that may be available in any soil eurosoilstab, 2002. Bnd number bnd name purpose price inrunit excluding gst quantity volume available for purchase at. Ordinary portland cement the manufacture of opc is decreasing all over the world in view of the popularity of blended cement on account of lower energy consumption, environmental pollution, economic and other technical reasons. Other terms and conditions of the licence remain the same. Kohat cement comapny limited pindi road kohat pakistan name of the product ordinary portland cement 43 grade endorsement no.
Chemical composition of cement the raw materials used for the manufacture of cement consist mainly of lime, silica, alumina. Portland cement can be made by following two different processes a dry one and a wet one. Cement types, composition, uses and advantages of nanocement. This this cement is made by heating limestone calcium carbonate with other materials such as cla y to. The techniques used include scanning electron microscopy.
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