scholarly journals Durability Properties of Blast Furnace Slag (BFS)-Modified Concrete

2019 ◽  
Vol 8 (11) ◽  
pp. 831-833
Keyword(s):  
Blast Furnace ◽  
Water Absorption ◽  
Blast Furnace Slag ◽  
Engineering Properties ◽  
Mineral Admixtures ◽  
Acid Attack ◽  
Initial Water ◽  
Durability Properties ◽  
Weight Losses ◽  
Furnace Slag

Mineral admixtures are being used today almost in all concretes partially, to improve workability, engineering properties and also to enhance durability of the concrete. These are industries by-products. This paper discusses, blast furnace slag (BFS) was used to study durability properties; namely, initial water absorption, final water absorption and acid attack. To examine the above mentioned properties, M30 concrete was chosen. The BFS content was varied from 0% to 30% by volume of cement with an interval of 10%. In acid attack, specimens were cured in H2SO4 solution about 3% concentration, the corresponding weight losses (%) were evaluated for curing periods of 7, 14 and 28 days. The durability properties of the BFS-modified concrete have been improved when BFS content increased up to 20% advantageously. Weight loss was also decreased.

scholarly journals Metakaolin Influence on Concrete Durability Properties

2019 ◽  
Vol 8 (11) ◽  
pp. 1109-1111
Keyword(s):  
Water Absorption ◽  
Mineral Admixture ◽  
Engineering Properties ◽  
Mineral Admixtures ◽  
Concrete Durability ◽  
Acid Attack ◽  
Initial Water ◽  
Durability Properties ◽  
Weight Losses ◽  
Permanence Properties

Mineral admixtures are being used today almost in all concretes partially, to improve workability, engineering properties and also to enhance durability of the concrete. These admixtures are industrial by-products. In the present study, mineral admixture such as metakaolin (MK) is replaced partially in cement to investigate permanence properties of concrete in terms of initial water absorption, final water absorption and confrontation to acid attack. Inorder to identify the durability properties, concrete of M30 grade was prepared. The mineral admixture content was varied from 0% to 30% by volume of cement with 10% gradient. In acid attack, 3% H2SO4 solution is used for curing of specimens and the corresponding weight losses (%) were evaluated for curing periods of 7 days, 14 days and 28 days. Both initial and final water absorptions of the metakaolin-modified concrete have been improved when metakaolin content was increased up to 10% advantageously. And, also weight loss was decreased when metakaolin content varied from 0% to 30%.

scholarly journals Effect of Mineral Admixtures on the Performance of Low-Quality Recycled Aggregate Concrete

Crystals ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 596
Author(s):  
Yasuhiro Dosho
Keyword(s):  
Blast Furnace ◽  
Fly Ash ◽  
Blast Furnace Slag ◽  
Recycled Aggregate Concrete ◽  
Recycled Aggregate ◽  
Mineral Admixtures ◽  
Structural Concrete ◽  
Aggregate Concrete ◽  
Granulated Blast Furnace Slag ◽  
Furnace Slag

To improve the application of low-quality aggregates in structural concrete, this study investigated the effect of multi-purpose mineral admixtures, such as fly ash and ground granulated blast-furnace slag, on the performance of concrete. Accordingly, the primary performance of low-quality recycled aggregate concrete could be improved by varying the replacement ratio of the recycled aggregate and using appropriate mineral admixtures such as fly ash and ground granulated blast-furnace slag. The results show the potential for the use of low-quality aggregate in structural concrete.

Effects of Fly Ash and Granular Blast-Furnace Slag on Development Rate of Strength of Concrete

2014 ◽  
Vol 629-630 ◽  
pp. 371-375
Author(s):  
Ji Wei Cai ◽  
Si Jia Yan ◽  
Gong Lei Wei ◽  
Lu Wang ◽  
Jin Jin Zhou
Keyword(s):  
Blast Furnace ◽  
Fly Ash ◽  
Blast Furnace Slag ◽  
Development Rate ◽  
Mineral Admixture ◽  
Mineral Admixtures ◽  
Conventional Concrete ◽  
Enhancing Effect ◽  
Substitution Content ◽  
Furnace Slag

Fly ash (FA) and granular blast-furnace slag (GBFS) are usual mineral admixtures to conventional concrete, and their contents substituted for Portland cement definitely affect development rate of strength of concrete. C30 and C60 concrete samples with FA and/or GBFS were prepared to study the influence of substitution content of the mineral admixtures on 3 d, 7 d and 28 d strength. The results reveal that the development rate of strength in period from 3 d to 7 d gets slow with increasing content of mineral admixtures except for concrete with only GBFS less than 20%. In the case of substituting FA as the only mineral admixture for part of cement, the development rate of strength of C30 concrete in period from 7 d to 28 d keeps roughly constant even that of C60 concrete increases. When substituting mineral admixtures in the presence of GBFS for cement within experimental range, the development rate of strength in period from 7 d to 28 d gets fast with increasing substitution content. The enhancing effect of combining FA and GBFS occurs in period from 7 d to 28 d for both C30 and C60 concretes (FA+GBFS≤40%), even occurs in period from 3 d to 7 d for C60 concrete. Based on 7 d strength and the development rate, 28 d strength of concrete can be predicted accurately.

scholarly journals Investigation of Engineering Properties of Blast Furnace Slag Additive Mortars

2020 ◽  
Vol 8 (2) ◽  
pp. 138-143
Author(s):  
Hüseyin BORAN ◽  
Osman GÜNAYDIN ◽  
Kadir GÜÇLÜER
Keyword(s):  
Blast Furnace ◽  
Blast Furnace Slag ◽  
Engineering Properties ◽  
Furnace Slag

Improvement in Engineering Properties of Expansive Soils using Ground Granulated Blast Furnace Slag

2018 ◽  
Vol 92 (3) ◽  
pp. 357-362 ◽  
Author(s):  
Hassan Mujtaba ◽  
Tahir Aziz ◽  
Khalid Farooq ◽  
Nagaratnam Sivakugan ◽  
Braja M. Das
Keyword(s):  
Blast Furnace ◽  
Blast Furnace Slag ◽  
Expansive Soils ◽  
Engineering Properties ◽  
Granulated Blast Furnace Slag ◽  
Furnace Slag

Study on Soil Stabilization by Using Fly Ash and Ground Granulated Blast Furnace Slag (GGBS)

2021 ◽  
Vol 9 (8) ◽  
pp. 2506-2512
Author(s):  
Pratiksha R. Patil
Keyword(s):  
Blast Furnace ◽  
Fly Ash ◽  
Blast Furnace Slag ◽  
Soil Stabilization ◽  
Engineering Properties ◽  
Black Cotton Soil ◽  
Soil Test ◽  
Granulated Blast Furnace Slag ◽  
Strength And Durability ◽  
Furnace Slag

Abstract: Soil stabilization has become the more issue in construction activity. In this study we focus on improvement of soil by using Fly ash and ground granulated blast furnace slag (GGBS). In many villages there was demolition of houses due to flood situation and landslide so stabilization of soil is very important factor in this area. In these studies we use local Fly ash and Ground granulated blast furnace slag (GGBS) for stabilization of soil. Soil are generally stabilized to increase their strength and durability or to prevent soil erosion. The properties of soil vary a great deal at different places or in certain cases even at one place the success of soil stabilization depends on soil testing. Various methods are there to stabilize soil and the method should be verified in the lab with the soil material before applying it on the field. The various percentages of Fly ash and GGBS were mixed with soil sample to conduct soil test. Using fly ash reduces the plasticity index which has potential impact on engineering properties also GGBS has cementations property which acts as binding material for the soil. On addition of 15% Fly ash and 5% GGBS increase the strength of soil (according to IS2720:1985) it’s recommended for better result. Keywords: Stabilization of soil, Fly ash, GGBS, Black cotton soil, Soil test.

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