Utilization Of Blast Furnace Slag In Concrete - IRE Journals (original) (raw)
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UTILIZATION OF BLAST FURNACE SLAG IN CONCRETE -REVIEW
International Journal of Engineering Technology and Management Sciences, 2024
The impact of silica fume on the strength development rate and durability of binary concretes containing low reactivity slag. Results show that silica fume moderately improves strength gain but significantly enhances durability and water demand. The use of blast furnace slag and fine aggregate in construction materials for cold weather conditions. It found that GBFS aggregate increased compressive strength, frost resistance, and enhanced resistance against sulfuric acid attacks, demonstrating its potential for use in cold weather construction. The durability and strength of coal gangue-based geopolymer concrete, revealing that proper GBFS content and alkali activator modulus can improve freeze-thaw resistance. Alkali activated Self-Compacting Geopolymer Concrete (SCGC) using Ground Granulated Blast Furnace Slag (GGBS) incorporated with 2% nano silica. The mix design with 16M alkaline solution and 500 Kg/m3 binder content exhibited the highest compressive, flexural, and split tensile strength at 90 days. The corrosion performance of recycled aggregate concrete, focusing on water to binder ratios and the impact of 50% ground granulated blast furnace slag. Showed that the addition of ground granulated blast furnace slag increased surface resistivity to 88 kΩcm and decreased carbonation resistance. This increased potential and decreased corrosion rate, indicating that the inclusion of ground granulated blast furnace slag in recycled aggregate concrete mixes enhances corrosion resistance. The impact of waste beverage glass on the performance of ground granulated blast furnace slag concrete mixes. Results show that waste beverage glass reduces workability but improves mechanical properties, while increasing water absorption.
Eco-concrete with incorporation of blast furnace slag as natural aggregates replacement
Science and Technology of Materials, 2018
This study focused on studying the possibility of using concrete with incorporation of slag from blast furnace in the filling of short steel columns. The natural sand was totally or partially replaced by the sand slag in the composition of the concrete. The characterization of these concretes was made based on their physical properties (apparent and specific densities, porosity and fineness modulus), mechanical properties (compressive and tensile strengths) and the microstructure analysis by scanning electron microscopy (SEM). The comparison with the conventional concrete was made. The experimental results show that the percentages of sand slag on the concrete composition have an important effect on the enhancement of the mechanical proprieties. The comparison of the different determined characteristics shows the benefits of the use of sand slag in the concrete composition compared with the conventional concrete.
The objective of present investigation was to study the effect of granulated blast furnace slag as substitute for fine aggregate in cement mortar and concrete. Now a days, river sand becomes scarce and costly too, which is one of the very important ingredient of concrete and cement mortar mix especially in India and the world consumption of sand in concrete generation along is around 1000 to 1100 million tonnes per year, making its scarce and limited. Shortage of river sand resulted into the over dredging of river sand which causes environmental threat and loss of aquatic life also. In this paper granulated blast furnace slag is used as substitute for river sand in cement mortar and concrete, to overcome the environmental problems created due to over mining. In this investigation, in a cement mortar and concrete replacing natural sand by granulated blast furnace slag in a range of 20%, 40%, 60%,80% and 100%. The workability and strength of cement mortar and concrete with varying percentage of granulated blast furnace slag substitute which is then compare with workability and strength of conventional concrete. To determine the workability and strength of cement mortar and concrete, cubes of standard sizes 150mm x 150mm x 150mm (for concrete) and 70mm x 70mm x 70mm (for cement mortar) for 3 rd day (cement mortar), 7 th day and 28 th days were casted and tested under compression testing machine . The work is extending to 100% replacement of natural sand with granulated blast furnace slag for M-20 grade of concrete and cement mortar. The compressive strength and flow characteristic of various mixes at various curing periods are studies. The study has shown that, the granulated blast furnace slag can be used as best alternative construction material over river sand. By these substitution and study one can achieve environmental protection as well as economy.
Study of Granulated Blast Furnace Slag as Fine Aggregates in Concrete for Sustainable Infrastructure
Growing environmental restrictions to the exploitation of sand from river beds leads to search for alternatives particularly near the larger metropolitan areas. This has brought in severe strains on the availability of sand forcing the construction industry to look for alternative construction materials without compromising the strength criteria of concrete. Granulated blast furnace slags are one of the promising sustainable solutions as they are obtained as solid wastes generated by industry. Hence it reduces the solid waste disposal problem and other environmental issues. Present experimental work explores the possibility of using GBFS as replacement of natural sand in concrete. In this study an attempt is done to understand the variation in compressive strength of concrete with GBFS content. Along with that cost analysis is also done to suggest the most optimized percentage of GBFS to be used in various conditions.
The present study is based on the Granular blast furnace slag, a light weight aggregate having high percentage of refractive additive as alumina and low thermal coefficient of expansion. The objective of this study is to find the scope of utilizing this additive in concrete which may sometimes exposed to high temperature. In this study six series of concrete mixes of Grade M20 including control mix were prepared by replacing natural sand with GBFS. Replacement percentages were 10, 30, 50, 70 and 100% by dry weight of fine aggregate. Whole the experimental works were carried out in two phases. In the first phase; basic mechanical behaviour as compressive strength of concrete mixes cured up to various ages were studied. In the second phase; thermal studies were performed on specimen of concrete mixes using muffle furnace at temperature varying from 27°C to 800°C for soaking time of 3hr. Residual compressive strength and loss in weight were evaluated and also, thermal cracks developed in the specimen were observed through necked eye. It was found that granular slag up to 30-50% could be suitably used in normal construction with respect to mechanical strengths and even if even if such concretes were to be subjected to thermal exposure. Moreover, surface cracks were observed after 500°C and continue to widen up to 800°C with total disintegration at 900°C
Materials, 2019
For sustainable development in the construction industry, blast furnace slag has been used as a substitute for cement in concrete. In contrast, steel-making slag, the second largest by-product in the steel industry, is mostly used as a filler material in embankment construction. This is because steel-making slag has relatively low hydraulicity and a problem with volumetric expansion. However, as the quenching process of slag has improved recently and the steel making process is specifically separated, the properties of steel-making slag has also improved. In this context, there is a need to find a method for recycling steel-making slag as a more highly valued material, such as its potential use as an admixture in concrete. Therefore, in order to confirm the possibility of using electric arc furnace (EAF) oxidizing slag as a binder, a comparative assessment of the mechanical properties of concrete containing electric arc furnace oxidizing slag, steel-making slag, and granulated blast furnace (GBF) slag was performed. The initial and final setting, shrinkage, compressive and split-cylinder tensile strength of the slag concretes were measured. It was found that replacing cement with EAF oxidizing slag delayed the hydration reaction at early ages, with no significant problems in setting time, shrinkage or strength development found.
IRJET, 2022
Concrete is one of the most versatile construction materials used around the world. However, the production of concrete leads to the emission of massive amounts of carbon dioxide into the atmosphere, thus affecting the environment. One of the best alternatives to create environment-friendly construction materials is to replace cement with an industrial by-product, i.e., Ground Granulated Blast Furnace Slag (GGBS). GGBS is produced during the manufacturing of iron. This study aims to examine the usage of GGBS in concrete as a partial replacement material for cement. The literature shows that GGBS improves the properties of concrete at later ages, subject to replacement level.
The study on optimization of cement and fine aggregate by blast furnace slag in concrete
PROCEEDINGS OF THE INTERNATIONAL CONFERENCE ON SUSTAINABLE MATERIALS AND STRUCTURES FOR CIVIL INFRASTRUCTURES (SMSCI2019), 2019
Generation of industrial by-products has increased significantly with industrialization. One such by-product from iron smelting industry is iron slag, which is generated from blast-furnaces while extracting iron. This blast furnace slag is used to make a cementitious material by grinding it into fine powder, known as Ground Granulated Blast Furnace Slag (GGBS). This blast furnace slag is also used to make a glassy granular product, Granulated blast furnace Slag (GBFS) which can be used as fine aggregate. Present experimental work investigates feasibility of using GBFS as replacement of natural sand and GGBS as replacement of cement in concrete respectively. Concrete cubes have been prepared and their compressive strength is checked for M30 grade of concrete. Thus, it can be concluded that GGBS and GBFS can be used to partially replace cement up to 55% and sand up to 50% in concrete respectively without affecting their compressive strength. Thereby reducing carbon dioxide emission and curtailing cost of concrete by 20.25%.
Behavior of Blast Furnace Slag in rigid Pavement (Compressive and Splitting Tensile Strength)
2017
This study represents the investigation of experiment which is carried out to find the effects of replacement of coarse aggregate with the slag of blast furnace on various properties of concrete. The objective of the study is to find out the alternate source of aggregate of high quality because quarries of natural stones are depleting with drastic speed due to lots of construction activities occurring in India. Thus, the effects on compressive strength of cubes is evaluated by replacing slag with aggregate of natural course, also the flexural strength and split tensile strength is evaluated for beams and cylinders respectively. Slag which is a waste byproduct of steel and iron production gives an opportunity to use it as an alternative to available aggregate. The test results were obtained of concrete by mixing slag with coarse aggregate in various percentages i.e. 0, 20, 40, 60 and 100 Percentages respectively. Before testing all the prepared specimens of concrete were cured for a ...