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. Mechanical properties of recycled aggregate concrete produced with portland pozzolana cement article pdf available march 2016 with 2,855 reads how we measure reads. When used alone, the optimum amount of pozzolan required to treat a fully dispersive clay sample was 5%, but the curing time to reduce dispersion potential. Today portland pozzolana cement is widely in demand for industrial and residential buildings, roads, dams, and machine foundations. Portland pozzolan cement definition is a portland cement to which pozzolana is added during the grinding of the cement clinker. The pozzolanic materials include fly ash, volcanic ash, calcined clay or silica fumes. Specification for portland pozzolana cement, part 1. Portland pozzolana cement ppc portland pozzolana cement also commonly known as ppc cement. Use of dispersive clay as construction material requires treatment such as by chemical addition.
Portland pozzolana cement ppc the construction civil. Properties of selfcompacting portland pozzolana and. A 50 kg bag of the portland pozzolana cement gives more volume of mortar than ordinary portland cement as the fly ash is finer and of lower density. Environmental effects on concrete using ordinary and. Fly ash is a very fine material produced as a residue precipitated electrostatically or mechanically from the exhaust gases of coalfired thermal power station. Therefore, the properties of a cement must be investigated. Ordinarynormal portland cement is one of the most widely used type of portland cement. Portland pozzolana cement is manufactured by blending pozzolanic materials, opc clinker, and gypsum either grinding them together or separately. Portland pozzolana cement is integrated cement which is formed by.
Pozzolanic materials include flyash, shale, volcanic ash, calcined clay, silica fumes etc. It is always desirable to use the best cement in constructions. Pdf use of portland pozzolana cement to enhance the service. Portland pozzolana cement shall be used with caution since 4 to 6h strength of concrete is considered significant in such construction. Portland pozzolana cement manufacture, properties and uses. The pozzolanic effect of nanosilica ns particles when combined with multi walled carbon nanotubes mwcnt was studied in. Treatments to dispersive clay using pozzolan and portland cement, singly and simultaneously, were carried out in this study. Portland pozzolana cement ppc an ecofriendly product. Portlandpozzolan cement definition of portlandpozzolan. The colour of the cement should normally be greenish grey. These materials are added within a range of 15% to 35% by cement weight.
It was named portland cement because it looked like the. Difference between opc cement and ppc cement the main differences in their characteristics and uses are portland pozzolana cement is a variation of ordinary portland cement. Portland pozzolana cement ppc portland pozzolana cement ppc portland pozzolana cement is a kind of blended cement which is produced by either intergrinding of opc clinker along with gypsum and pozzolanic materials in certain proportions or grinding the opc clinker, gypsum and pozzolanic materials separately and thoroughly blending them in certain proportions. Portland pozzolana cement ppc an ecofriendly product by. Lime pozzolana cement lpc was bagged in polyethylenelined bag and ready for use. The pozzolanic material may not posses cementitious property but it is a material which essentially contains silicious or aluminous material. Effect of pozzolanic additives on structure and chemical. This paper reports on the results of an experimental study on the production of selfcompacting concrete scc produced with portland cement pc. Ultra fine cement is proposed to be used in oil well cementing 3 and in injection technology 4. Two types of cement namely ordinary portland cement opc and portland pozzolana cement ppc with one mix ratio were used for complete study. The study present the behaviour of fly ash portland cement mix, calcined clay portland cement mix and rice husk ash portland cement mix as cementing agents in the production of concrete.
Dec 03, 2017 for the love of physics walter lewin may 16, 2011 duration. This forms compounds possessing cementitious properties at room. Bureau of reclamation began extensive research to better understand natural pozzolans impact on heat of hydration and concrete. Properties of beliterich portland cement and concrete in. If a concrete contains a pozzolan, less cement is required to obtain a specified strength. A pozzolanic material is essentially a silicious or aluminous material.
The eternal cement even before we get to its magnetic properties, this is rather interesting material. Study on the physical and mechanical property of ordinary portland cement and fly ash paste shaswata mukherjee, saroj mandal, adhikari. The application of pozzolana in portland cement is. It can be confidently employed in construction of hydraulic structures, marine works, mass concreting such as dams, dykes, retaining walls foundations and sewage pipes. Pozzolan cement a general name for a group of cements containing not less than 20 percent active mineral additives. Portland pozzolana cement bis certification as per is. For the love of physics walter lewin may 16, 2011 duration.
The properties of pozzolanic cement are very different from those of conventional portland cement cem i, and these differences and their effects on concrete production and site practice must be recognised. Even before we get to its magnetic properties, this is rather interesting material. Portland pozzolana cement existence of pozzolan in this kind of cement causes reduction in the amount of hydration heat and increase in durability of cement in corrosive environments, particularly against sulfates and sometimes chlorine. Portland pozzolana cement is 1489 part i the history of pozzolanic material goes back to romans time. Co2 emission can be minimized by using fly ash in cement concrete. Portlandpozzolana cement is produced by grinding together portland cement clinker and artificial pozzolana fly ash with addition of gypsum or calcium sulphate.
Effects of using pozzolan and portland cement in the. B international journal of civil and structural engineering volume 2 issue 3 2012 732 ordinary portland cement opc having 28 day compressive strength of 54 mpa was used. The name portland cement was given by joseph aspdin in 1824 due to its. Concrete specimens exposed in three environments namely. The study present the behaviour of fly ashportland cement mix, calcined clay portland cement mix and rice husk ash portland cement mix as cementing agents in the production of concrete. Properties of activated blended cement containing high content of. Studies have shown that the pozzolanic additives reduce porosity, increase density and as a consequence increase the chemical durability of concrete to sulphate ion containing solution. Shared%20documentspdfenglish%20turkeymasterglenium%c2%ae%. In modern construction, the major type of pozzolan cement is portlandpozzolan cement, produced by grinding together portland cement clinker 6080 percent, an. Use of portland pozzolana cement to enhance the service life of reinforced concrete exposed to chloride attack article pdf available in journal of materials in civil engineering 2711. Portland pozzolana cement ppc ppc is special blended cement useful in general construction work and is especially suitable for applications in aggressive environmental conditions.
Portland pozzolana cement ppc advantages and characteristics. Portland pozzolana cement improves pore size distribution and also reduces the micro cracks in the cement paste at the transition zone due to pozzolanic action and being finer than opc. Field testing of cement open the bag and take a good look at the cement. Since pozzolanic cement of abyek is produced using less than 8% of c3a, increasing in durability of cement and concrete and. First is the economic gain obtained by replacing a substantial part of the portland cement by cheaper natural pozzolans or industrial byproducts. Pdf mechanical properties of recycled aggregate concrete. Once fully hardened, the portland pozzolana cement ppc will be stronger than ordinary. Strength development of phosphoanhydritepozzolana cement 141 p portland cement, f fly ash table 4. It can also be processed from shales and certain types of. Pozzolan cement article about pozzolan cement by the free. Viii astm c61889 requirements for a type n pozzolan for use as a mineral. Portland pozzolana cement is cement manufactured by combining pozzolanic materials. The percentage of pozzolanic material used in the preparation should be between 10 to 30. The early age properties of concrete like workability.
Not only the minimum dosage of nsp for achieving optimum flow for hbc pastes is lower, but also higher flow rate and flow retention time as well compared with pc pastes at related admixture dosage. Pdf use of portland pozzolana cement to enhance the. For usual range of portland cements, about onehalf of the total heat is liberated between 1 and 3 days, about threequarters in 7 days, and nearly 90 percent in 6 months. Although desirable cement properties may vary depending on the type of construction, generally a good cement possesses following properties which depend upon its composition, thoroughness of burning and fineness of grinding. The cement was obtained from the cherat cement factory and details about its physical properties, chemical composition, and compounds are. It resembles surkhi which is prepared by burning bricks made from ordinary soils. The vicat apparatus was used for the purpose of determining the setting time and standard consistency of the lime pozzolana cement in accordance with the provisions of 6, with a needle diameter 1. These types of cement are manufactured by using pozzolanic materials as one of the main ingredient. Pozzolanic materials do not possess any cementing properties of their own, but they contain silica and alumina in reactive form.
Composition, designation, specifications and durability of masonry cements. Cementitious properties of pozzolanic materials and crystallization of sulphate salt in pores decrease number of pores in range 0. In this article we discuss about the properties, manufacture, characteristics, advantages and disadvantages of portland pozzolana cement. Pozzolana is abundant in certain locations and is extensively used as an addition to portland cement in countries such as italy, germany, kenya, turkey, china and greece. Sarkar and wheeler 6 analyzed the properties of ultra fine cement. Calcined clays, as a pozzolanic material, have been successfully used in partial substitution of ordinary portland cement opc in blended. In modern construction, the major type of pozzolan cement. Fly ash will reduce co2 emission by 227 million tonnes replacing 50% of cement worldwide by scm will reduce co2 by 750 million tonnes. Basics of cement, fly ash, pozzolana and physical and chemical properties. Structural use of portland claypozzolana cement free download as powerpoint presentation.
Chemical interaction in the form of a pozzolanic reaction. The amount of cement reduction will vary depending upon the reactivity of the pozzolan. A highly reactive pozzolan has more cementitious strength value than a lower reactive pozzolan. Highquality portland cement clinker, gypsum and pozzolanic materials are thoroughly interground or blended in certain proportions for producing ppc. The term pozzolan cement is derived from the name of a friable volcanic rockpozzolanaused in ancient rome as an additive to lime in the production of hydraulic cement. Portlandpozzolan cement definition is a portland cement to which pozzolana is added during the grinding of the cement clinker. If the percentage is exceeded, the strength of cement is reduced. The benefits of pozzolan use in cement and concrete are threefold. Properties of concrete concrete is an artificial conglomerate stone made essentially of portland cement, water, and aggregates. In order to reduce energy consumption and co2 emission, and increase production, cement manufacturers are blending or intergrinding mineral additives such as slag, natural pozzolana, and limestone. Currently, the factory supplies two finished cement products, namely.
In one of the recent studies in an ordinary portland cement paste only 20% calcium hydroxide was found after 1 year hydration where as in a similarly hydrated paste containing. Portland pozzolana cement ppc is manufactured by the inter grinding of opc clinker with 10 to 25 per cent of pozzolanic material. A pozzolanic material is an aluminous or siliceous material which itself does not have any cementing property. Some facts replacing 15% cement worldwide by scm supplementary cement material i. To reach a balance between mechanical properties, high workability.
The invention of modern portland cement in the early 1800s nearly 7,000 years after the first recorded natural pozzolan use did not end their use as a binding agent in concrete. The name portland cement was given by joseph aspdin in 1824 due to its similarity in. Importance of portland pozzolana cement ppc for durable. Pozzolanic potential and mechanical performance of wheat. The portland pozzolana cement is replaced by fly ash in various proportions of 5. This research work presents and discusses the pozzolanic potential of thermallytreated paper sludge on technical behaviour of new cementing matrixes, mainly. The addition of pozzolana to portland cement causes a. This cement comprises of opc clinker, gypsum and pozzolanic materials in certain proportions. Physical and chemical properties of fly ash based portland. The portland pozzolana cement is a kind of blended cement which is produced by either intergrinding of opc clinker along with gypsum and pozzolanic materials in certain proportions or grinding the opc clinker, gypsum and pozzolanic materials separately and thoroughly blending them in certain proportions.
The behaviour of portland pozzolana cement concrete in. Properties of beliterich portland cement and concrete in china 386 hbc with nsp naphthalene based superplasticizer. Basalt as pozzolana and filler in ordinary portland cement. Portland pozzolana cement is produced by grinding together portland cement clinker and artificial pozzolana fly ash with addition of gypsum or calcium sulphate. Normally, it packs its products in 50 kg packing polyethylenepaper bags. Blastfurnace cements, pozzolana cements and composite cements will be.
Compressive strength and workability of concrete using. Portland pozzolana cement ppc the portland pozzolana cement is a kind of blended cement which is produced by either inter grinding of opc clinker along with gypsum and pozzolanic materials in certain proportions or grinding the opc clinker, gyps. Portland pozzolana cement ppcdefinition, properties. Portland pozzolana cement ppc is manufactured by the intergrinding of ordinary portland cement clinker with 10 to 25% of pozzolanic material as per latest amendment, it is 15 to 35%. Pozzolans are a broad class of siliceous or siliceous and aluminous materials which, in themselves, possess little or no cementitious value but which will, in finely divided form and in the presence of water, react chemically with calcium hydroxide at ordinary temperature to form compounds possessing cementitious properties. This standard was first published in 1962 and subsequently revised in 1967 and 1976. Determination of the pozzolanic properties of olotu marine. Compared with opc, wfc has shorter setting times, lower bleeding and compressive strength. Portland pozzolana cement without compromising with compressive strength and other essential parameters. The term includes natural volcanic material having pozzolanic properties as also other natural and artificial materials, such as diatomaceous earth, calcined clay.
A blend of portland cement and pozzolans has been commonly used to deal with. Study on the physical and mechanical property of ordinary. Opc ordinary portland cement and ppc pozzolanic portland cement both to domestic and export markets. Pozzolana is defined as a siliceous or siliceous and aluminous materials which in itself possess little or no cementing properties, but will in a finally divided form and in the presence of. Compared to industrial byproduct pozzolans they are characterized by larger ranges in composition and a larger variability in physical properties. 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 know and speak the laws that govern them. Concrete is the most widely used composite material made up of different ingredients i. This paper reports on the results of an experimental study on the production of selfcompacting concrete scc produced with portland cement pc, portland pozzolana ppc and portland limestone. As each one of these factors is increased, heat of hydration increases. Experimental the finest cement fraction samples were selected from the sleeve filters by grinding the quickly hardening portland cement cem i r lst en 197, with up to 5 % of limestone added to this cement during grinding. Ordinary portland cement tests, properties, manufacture. Ppc cement portland pozzolana cement hibond cement.
1409 1472 421 154 215 1244 119 1022 1287 1307 1124 534 1349 1393 327 1292 606 527 206 978 1152 326 879 733 253 1406 1405 517 705 1365 1417 1354 803 1201