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  • The Properties of Ordinary Portland Cement and Physical

    04/10/2018· [3] CRUSHING STRENGTH TEST. For this 200g of cement is mixed with 600g of standard sand confirming to IS 650–1966. After mixing thoroughly in dry condition for a minute distilled potable water P4 + 3 percentage is added where P is the water required for the standard consistency. They are mixed with trowel for 3 to 4 minutes to get uniform

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  • Farm structures Ch3 Building materials: Concrete

    Average crushing strength. Ordinary Portland cement. Storage in air 18°C 65%, R H N/mm2: Storage in water N/mm2: 1 day: 5.5-3 days: 15.0: 15.2: 7 days: 22.0: 22.7: 28 days: 31.0: 34.5: 3 months: 37.2: 44.1 (1 cement 6 aggregate, by weight, 0.60 water cement ratio). In some literature the required grade of concrete is noted by the proportions of cement sand stone, so called nominal

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  • Properties of Ordinary Portland Cement

    14/05/2014· (ii) Physical properties: The following physical properties should be checked before selecting a portland cement for the civil engineering works. IS 269–1967 specifies the method of testing and prescribes the limits: (a) Fineness (b) Setting time (c) Soundness (d) Crushing strength.

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  • Properties of Ordinary Portland Cement The Civil Engineers

    14/07/2020· Properties of Ordinary Portland Cement (i) Chemical properties: Portland cement consists of the following chemical compounds: (a) Tricalcium silicate 3 CaO.SiO2 (C3S) 40%(b) Dicalcium silicate 2CaO.SiO2 (C2S) 30%(c) Tricalcium aluminate 3CaO.Al2O3 (C3A) 11%(d) Tetracalcium aluminate 4CaO.Al2O3.Fe2O3 (C3AF) 11% There may be small quantities of impurities

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  • Ordinary Portland Cement Tests, Properties, Manufacture

    Cement can be defined as the bonding material having cohesive & adhesive properties which makes it capable to unite the different construction materials and form the compacted assembly. Ordinary/Normal Portland cement is one of the most widely used type of Portland Cement. The name Portland cement was given by Joseph Aspdin in 1824 due to its similarity in

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  • Properties of normal strength Portland cement concrete

    Typical properties of normal strength Portland cement concrete: Density : 2240 2400 kg/m 3 (140 150 lb/ft 3) Compressive strength: 20 40 MPa (3000 6000 psi = 432 864 ksf) Compressive strength of concrete (% of 28-day strength) vs age (days) Flexural strength: 3 5 MPa (400 700 psi = 57.6 100.8 ksf) Tensile strength: 2 5 MPa (300 700 psi = 43.2 100.8 ksf) Modulus of

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  • Different Grades of Ordinary Portland Cement- OPC

    08/12/2019· 4. Compressive Strength-a) 72 ± l hour: not less than 23 MPa, b) 168 ± 2 hours: not less than 33 MPa, and c) 672 ± 4 hours: not less than 43 MPa. OPC 53 Grade: The 53 Grade portland cement is not used for ordinary construction works. It is generally used where high strength is needed such as RCC Bridges, Dams, construction of high rise

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  • Comparative Analysis Of Portland Cements In Nigeria

    crushing load while the least strength was of Purechem at 370.6 KN as the crushing load. Key words: Portland cement, compressive strength, concrete, Ordinary, Brands. 1. Introduction Portland cement is a substance which binds together the particles of aggregates (usually sand and gravel) to form a mass of high compressive strength concrete. It is a combination of limestone or chalk with clay

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  • Cement Extraction and processing Britannica

    Strength; Load Previous Page Extraction and processing. Raw materials employed in the There are four stages in the manufacture of portland cement: (1) crushing and grinding the raw materials, (2) blending the materials in the correct proportions, (3) burning the prepared mix in a kiln, and (4) grinding the burned product, known as “ clinker,” together with some 5 percent of gypsum (to

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  • Farm structures Ch3 Building materials: Concrete

    Average crushing strength. Ordinary Portland cement. Storage in air 18°C 65%, R H N/mm2: Storage in water N/mm2: 1 day: 5.5-3 days: 15.0: 15.2: 7 days: 22.0: 22.7: 28 days: 31.0: 34.5: 3 months: 37.2: 44.1 (1 cement 6 aggregate, by weight, 0.60 water cement ratio). In some literature the required grade of concrete is noted by the proportions of cement sand stone, so called nominal

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  • Comparative Analysis Of Portland Cements In Nigeria

    crushing load while the least strength was of Purechem at 370.6 KN as the crushing load. Key words: Portland cement, compressive strength, concrete, Ordinary, Brands. 1. Introduction Portland cement is a substance which binds together the particles of aggregates (usually sand and gravel) to form a mass of high compressive strength concrete. It is a combination of limestone or chalk with clay

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  • Re-Investigation of the Compressive Strength of Ordinary

    Keywords: Compressive strength, Ordinary portland cement (OPC), Lime concrete (LC). 1. Introduction Conventional concrete is a mixture of cement, sand, aggregates and water [14]. The overall relevance of concrete in virtually all civil engineering practice and building construction works cannot be over-emphasized. According to [12], concrete is a basic material that will continue to be in

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  • Properties of normal strength Portland cement concrete

    Typical properties of normal strength Portland cement concrete: Density : 2240 2400 kg/m 3 (140 150 lb/ft 3) Compressive strength: 20 40 MPa (3000 6000 psi = 432 864 ksf) Compressive strength of concrete (% of 28-day strength) vs age (days) Flexural strength: 3 5 MPa (400 700 psi = 57.6 100.8 ksf) Tensile strength: 2 5 MPa (300 700 psi = 43.2 100.8 ksf) Modulus of

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  • Different Grades of Ordinary Portland Cement- OPC

    08/12/2019· 4. Compressive Strength-a) 72 ± l hour: not less than 23 MPa, b) 168 ± 2 hours: not less than 33 MPa, and c) 672 ± 4 hours: not less than 43 MPa. OPC 53 Grade: The 53 Grade portland cement is not used for ordinary construction works. It is generally used where high strength is needed such as RCC Bridges, Dams, construction of high rise

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  • Portland Cement : A Brief History The Screed Scientist®

    Crushing and Grinding: The raw materials like limestone and clay, This is similar to ordinary Portland cement, except that its particles are more finely ground to facilitate quick reaction with water. It is used when fast strength growth of forms or structures is required. Low Heat of Hydration Portland Cement: This type of cement develops strength at a slower rate than other cement types

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  • Compressive strength prediction of Portland cement

    01/08/2014· Earlier ECP considered compressive strength gain as a parameter of age through the coefficients for ordinary Portland cement concrete strength as 0.4, 0.75, 1.0, 1.176 and 1.33 for 3, 7, 28, 90 and 360 days age, respectively. Whereas, for rapid strength Portland cement concrete those values were given as 0.556, 0.8363, 1, 1.111 and 1.176 for 3, 7, 28, 90 and 360 days, respectively.

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  • Strength of Cement Building Research Institute (P) Ltd.

    ASTM C 150 Portland Cement Mortar Compressive Strength Specifications in MPa. As per NS Standard Cement Mortar Compressive Strength Specifications in MPa . Fine Aggregate(Sand) Classification of Fine Aggregate Natural sand, finely crushed stone and crushed gravel are treated as “Fine Aggregates”. Aggregates used for making concrete normally lies between the range with a

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  • Ordinary Portland Cement ( OPC )- Definition, Uses and

    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 269-1976. After 1987 higher grade cement were introduced in India. Types of Ordinary Portland Cement. The Ordinary portland cement (OPC) was classified into three grades, namely 33 grade, 43 grade and 53 grade depending upon the strength of

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  • Compressive Strength Of Portland Cement School voor

    Compressive strength of ordinary Portland cement should not be less than the following values After 72 1 Hour 160 kg sq cm After 168 2 Hours 220 kg sq cm Tensile strength Tensile strength of cement sand mortar is tested to judge the tensile strength . PDF EFFECT OF GRADE OF CEMENT ON STRENGTH OF Typical properties of normal strength Portland cement concrete Density 2240

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