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construction. In comparison, structural steelwork, which can be easily dismantled and reused, is a more sustainable solution and has been widely adopted in European countries.
GGBS. a. nd Alccofine. Syed Nayaz1, ... construction martial by infrastructure industry. It would be difficult to produce high-strength concrete mixtures with required workability without using chemical admixtures ... OPC 53 grade, IS 8112. b) Nominal maximum size of aggregate: 12.5mm . c) Exposure condition: Moderate .
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OPC 53 Grade means the minimum compression strength requirement would be 53 MPa at 28 days. PSC - Portland Slag cement is a kind of blended cement manufactured either by grinding the Portland clinker with gypsum and granulated slag or by blending the ground granulated blast furnace slag (GGBS) with Ordinary Portland cement.
increases gradually until GGBS content reaches to 30%, and there after it falls even increase of GGBS content al all curing times, and it is found that the micro silica improves the early age strength of concrete with GGBS by refining the properties of hardened concrete continuously as it matures.
performance of the concrete.The cost of construction can be minimized. 1.2 Objectives of the Study The study, aims to enhance the performance of the ... Fig 3.3 Nano GGBS 3.1Mix Design M25 grade of concrete is used and mix design is done as per IS 10262:2009. Grade Designation : M25 Cement used :OPC 53 grade
• GGBS means the ground granulated blast furnace slag is a by-product of the manufacturing of pig iron. • Iron ore, coke and Lime-stone are fed into the furnace and the resulting molten slag floats above the molten iron at a temperature of about 1500oC to 1600oC.
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Unground GBS is a robust alternative as a base layer material in road construction, known as slag bound macadam (SBM). Quality controlled and offering high performing engineering properties, slag aggregates can be used in a wide range of construction projects including bridges, roads, …
rapidly due to rapid growth in the construction industry. As a result, the concrete industry is facing with a declining ... (GGBS) to cement and Copper slag (CS) to fine aggregate as ... For this study M30 grade concrete mix was designed with partial replacement of cement with GGBS (0%, 10%, 20% and 30%) and fine aggregate ...
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What is Ground Granulated Blastfurnace Slag? GGBS (also known as GGBS or GGBFS) is manufactured from blast furnace slag, a by-product from the manufacture of iron. ... How to determine the replacement ratio of GGBS (Grade 95) in concrete? When GGBS is "single-blended", the principle of equivalent amount replacement could be followed and the ...
Ground-granulated blast-furnace slag (GGBS or GGBFS) is obtained by quenching molten iron slag (a by-product of iron and steel-making) from a blast furnace in water or steam, to produce a glassy, ... but may also affect construction schedules where quick setting is required.
Construction and Building Materials. Volume 165, 20 March 2018, ... GGBS activation is usually negotiated with ASTM C989 and reported as SAI. ... The slag used in this study is derived from Isfahan steel industry which has SAI grade 80, which means the slag with low activity.
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M20 grade concrete with replacement of cement by GGBS with 20%, 30%, 40%, 50% and compared with plain cement concrete. This study extends to find best percentage of replacement by using both crush and natural sand. The maximum compressive strength was achieved at 30% of GGBS …
Strength and Durability Studies on GGBS Concrete ... The present paper focuses on investigating characteristics of M20 and M40 grade concrete with partial replacement of cement with ground ...
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of aggregate. The percentage of fl yash or ggbs being decided before hand, based on the quality and durability requirement at the site. The cement and fl yash or ggbs contents of the concrete mix are then calculated. The percentage of fi ne aggregate is decided based on its grading …
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A. Excavating, filling and grading for this Work includes, but is not necessarily limited to: 1) Excavating for footings and foundations. 2) Filling and backfilling to attain indicated grades. 3) Trenching and trench backfilling. 4) Rough and finish grading of the site.
replacement of OPC by GGBS in order to ... Concrete of grade M25 was used with the addition of glass fibreof 0.33% and 0.67% by weight of concrete with partial replacement of GGBS in 15%, 30%,45% and 60% by weight of cementitious material. The cubes ... considering cost of construction drawn attention of investigators to explore new replacement of