Cement, Concrete, Aggregates technology; By continuing you agree to the use of cookies. Compaction and pore structure of these mixes studied by optical microscopy have shown that the design of AAS concretes based on the proposed method resulted in a dense and workable mix. Slag aggregates are obtained by crushing of smelter slag or by special treatment of fire-liquid slag melt (molten slag aggregates). Dive into the research topics of 'Efficient mix design of alkali activated slag concretes based on packing fraction of ingredients and paste thickness'. @article{0701be810f8f4bd8998391d25d214e37. The concrete properties considered were slump, air content, and compressive strength. Giving savings of up to 9% in cement cost with a 50% slag to cement content ratio. title = "Efficient mix design of alkali activated slag concretes based on packing fraction of ingredients and paste thickness". very good [16]. To validate this method, trial castings were carried out for concrete mixes containing alkali activated slag (AAS) with different paste contents to suggest the most cost-efficient concrete for different classes of workability and applications. Ground granulated blast-furnace slag (GGBFS) Our slag cement CEMSlag TM is a hydraulic cement material created when granulated blast-furnace slag from the steel manufacturing process is ground to a fineness suited for concrete production. Test data for substitution mix designs were compared with the data for the original mix design. The advantage of slag is its ability to substitute more of cement. There are many different applications and uses of slag cement including mass concrete, flatwork, concrete paving, soil stabilization, and more. The SCA has produced 29 information sheets on a wide variety of slag cement related topics.  If you are looking for additional information on slag cement, the association, or if you are interested in scheduling a presentation, please contact us here. The design method is based on the selection of the volumetric proportions of sand and coarse aggregate according to an ideal particle gradation curve. A forum for everything concrete;where concrete professionals share knowledge and experience and exchange ideas. In this mix design two SCM’s have to be created one with fly ash and the other with Ground Slag. Slag cement in ready-mixed concrete is used in architectural structures of all kinds, roads and bridges, precast/prestressed products, pipe and block, mass concrete, and a whole host of other applications. In the study, civil and water engineering researchers found the chemical properties of the slag are enhanced through the wastewater treatment, so it performed better when used in concrete. Bookmark File PDF Mix Design Of Fiber Reinforced Concrete Frc Using Slagaccomplishment reviewing habit. Test data for substitution mix designs were compared with the data for the original mix design. 2018 Slag Cement Project of the Year Award Winners. Concrete mixes containing 50% replacement of cementIJERT slag gave the best results. The design method is based on the selection of the volumetric proportions of sand and coarse aggregate according to an ideal particle gradation curve. Together they form a unique fingerprint. Low permeability concrete can reduce corrosion potential of embedded reinforcing steel Low permeability can be achieved, in binary or ternary mixtures, with 25 to 65% slag cement substitution. (7) M. V. Patil et al. This study proposes an optimal mixture design method of low-CO2 HVS concrete … In general, concrete mixes are designed in order to achieve a defined workability, strength and durability . In all mixes, three ratios of slag-sand replacement (15, 30, and 45%) have been used, also three mixes of concrete with 25 MPa strength has been used in the study. Optimised concrete mix design and the role of slags There have been some good indicative studies showing how the environmental impact of a concrete mix in general is built up.6 In this study we make use of the software tool that was developed by INTRON on request of the CUR committee B- Efficient mix design of alkali activated slag concretes based on packing fraction of ingredients and paste thickness. UR - http://www.mendeley.com/research/efficient-mix-design-alkali-activated-slag-concretes-based-packing-fraction-ingredients-paste-thickn. Compaction and pore structure of these mixes studied by optical microscopy have shown that the design of AAS concretes based on the proposed method resulted in a dense and workable mix. This study proposes a method for selecting the mix proportions of alkali-activated concretes based on the packing fraction of materials. 2nd edition The basic procedures, described in this concrete mix design method, can be applied to concrete used for most purposes including pavements. In particular, because of the effects of climate change, carbonation will accelerate. (2015) stated that M30 grade of concrete be used and the tests be conducted for a variety ofvolume of copper slag replacement with fine aggregateof0% to100 % in concrete. design of normal concrete mixes. Furnace concrete thus ensures higher durability of the structure. T1 - Efficient mix design of alkali activated slag concretes based on packing fraction of ingredients and paste thickness. Higher long-term compressive and flexural strengths, Copyright 2021 by Slag Cement Association. Environmentally friendly and reduced greenhouse gas emissions Results show that the substitutions cause variability in concrete properties for both the fly ash and the slag mix designs. 3.1.5 Class C Fly Ash Concrete Mix Design from database..... 25 3.1.6 Class F Fly Ash and Ground-granulated Blast-furnace Slag Concrete Mix Design from database..... 26 3.1.7 Ground-granulated Blast-furnace Slag Concrete Mix Design The hill sand was used as fine aggregates (FA) … To validate this method, trial castings were carried out for concrete mixes containing alkali activated slag (AAS) with different paste contents to suggest the most cost-efficient concrete for different classes of workability and applications. abstract = "Many studies have been dedicated to the properties of alkali-activated slag concretes as a form of low-carbon high performance concrete, but less work has been focused on the application of mix design procedures to have a dense, durable and cost-efficient alkali-activated concrete. to reduce the environmental footprint of concrete while ensuring improved performance and increased durability. The additions such as fly ash or ground granulated blast furnace slag may be taken into account in the concrete composition with respect to the cement content and water-cement ratio if the suitability is established and as long as the maximum amounts taken into account do not exceed the limit of pozzolona and slag specified in IS 1489 (Part 1) and IS 455 respectively. keywords = "Alkali activated slag concrete, Efficient mix design, Packing fraction". The change in the bleeding is not due to particle size, but adjustments in the mix design due to the difference in specific gravity of the mix's cementitious material. Supplementary Cementitious Materials (SCM) are materials that are used in combination with cement to change the properties of Portland or blended cement through chemical or mechanical properties. The design method is based on the selection of the volumetric proportions of sand and coarse aggregate according to an ideal particle gradation curve. If the producer replaces GGBF slag pound for pound for cement, the mix … journal = "Journal of Cleaner Production", https://doi.org/10.1016/j.jclepro.2019.01.332, http://www.mendeley.com/research/efficient-mix-design-alkali-activated-slag-concretes-based-packing-fraction-ingredients-paste-thickn. N2 - Many studies have been dedicated to the properties of alkali-activated slag concretes as a form of low-carbon high performance concrete, but less work has been focused on the application of mix design procedures to have a dense, durable and cost-efficient alkali-activated concrete. The use of slag cement has demonstrated long-term performance enhancements allowing designers to reduce the environmental footprint of concrete while ensuring improved performance and increased durability. Five different mix designs were investigated for the concrete with natural aggregate. High-volume slag (HVS) can reduce the CO2 emissions of concrete, but increase the carbonation depth of concrete. AB - Many studies have been dedicated to the properties of alkali-activated slag concretes as a form of low-carbon high performance concrete, but less work has been focused on the application of mix design procedures to have a dense, durable and cost-efficient alkali-activated concrete. A new mix design methodology for self compacting concrete with ground granulated blast furnace slag (GGBFS) as replacement material for cement is proposed [17]. The ground granulated blast furnace slag (GGBFS) is a by-product of iron manufacturing which when added to concrete improves its properties such as workability, strength and durability. While GGBF slag particles may be similar in size to cement particles, they have a specific gravity of about 2.85 to 2.9, compared with portland cement (around 3.15). The first of these was a control mix and did not contain any fly ash or ground granulated blast furnace slag. Concrete strength: 30N/mm2 at 28 days. Compaction and pore structure of these mixes studied by optical microscopy have shown that the design of AAS concretes based on the proposed method resulted in a dense and workable mix. To validate this method, trial castings were carried out for concrete mixes containing alkali activated slag (AAS) with different paste contents to suggest the most cost-efficient concrete for different classes of workability and applications. A.H.L.Swaroop et alevaluated changes in compressive strength in different mixes of M30 Grade namely conventional aggregate concrete, concrete made by replacing 20% … Powered by Pure, Scopus & Elsevier Fingerprint Engine™ © 2021 Elsevier B.V. We use cookies to help provide and enhance our service and tailor content. Efficient mix design of alkali activated slag concretes based on packing fraction of ingredients and paste thickness. When a mix includes 20% fly ash, this will provide savings of 3.5% in cost. GGBS concrete behaves in a similar manner to fly ash concrete and affects the setting time, strength gain and workability of the concrete. The concrete properties considered were slump, air content, and compressive strength. This study proposes a method for selecting the mix proportions of alkali-activated concretes based on the packing fraction of materials. Since the addition of fly ash and slag lowers the concrete’s carbonation resistance, carbonation durability must be considered when designing a concrete mixture that contains fly ash and slag [1,2]. The packing fraction of materials recognized by the heating of iron ore, limestone and at... In in-situ stabilization of soil too re curious about a subject, but increase the carbonation depth of,... Limestone and coke at a temperature about 1500 degree Celsius - Efficient mix of. 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