The microstructure analysis was conducted to reveal the stabilization mechanism at low temperature. ... 2000). Compared with other industrial waste, ground granulated blast furnace slag (GGBS), as a by-product of the ironmaking process, has increasingly been concerned owing to the fact that it can reach high strength, reutilize …
In this paper, the effects of different curing ages (T = 7d, 14d, 28d, 56d, 90d, and 150d) and blast furnace slag contents on the mechanical properties and microscopic damage mechanisms under uniaxial compression of NAC and RAC were investigated, where the cement substitution rate of BFS was 0 % and 35 % (water-cement ratio of …
The use of calcium carbide residue (CCR), etc., as an alkali activator, and ground granulated blast furnace slag (GGBS), fly ash (FA), etc., as pozzolanic ash material for reinforcing soft soils ...
DOI: 10.1016/j.conbuildmat.2024.136753 Corpus ID: 270262216; Properties of ground granulated blast-furnace slag-based geopolymer mortars containing glass powder, feldspar, and metakaolin under different curing conditions
Figure 2a shows the XRD pattern of granulated blast furnace slag, which has a diffuse peak at about 30°, indicating that the granulated blast furnace slag has a relatively low crystallinity. Figure 2 b is the particle size distribution of the granulated blast furnace slag, whose D50 is 0.413 μm and D90 is 0.772 μm, which is slightly higher ...
Al-Rawas et al. 6 investigated the effectiveness of using copper slag, granulated blast furnace slag, cement by-pass dust, and slag-cement in reducing the …
This paper delves into the impacts of steel slag powder (SSP) and ground granulated blast furnace slag (GBFS) on the workability, compressive strength, conductivity, and microstructural characteristics of magnesium phosphate cement (MPC).
Coral wastes are produced during the construction of island. The use of coral wastes in concrete is beneficial to economy and environment. Coral waste as aggregate in concrete has been studied well. Now, coral powder (CP) as mineral admixture to replace cement partially in concrete is a different approach to reuse coral waste. However, the …
Slag, as shown in Fig. 1, is the 16th ingredient of high-performance concrete production [22], called supplementary cementitious materials (SCM) [23], that can enhance the strength and durability of concrete [2].The highly fine slag powder, with a surface area of 400–600 m 2 /kg and a bulk density of 1200 kg/m 3, can be mixed with free lime to …
Alkali-activated materials are low-environmental-impact binders that can be obtained from the alkaline activation of industrial wastes. In this study, converter steel slag as the major raw material and ground granulated blast furnace slag (GBFS) as the modified material were activated by water glass with a modulus of 1.5 and a Na 2 O …
The modified magnesium slag sample originated from the Shenmu Dongfeng Metal Magnesium Co., LTD. The crystalline phase of C 2 S in MMS does not transition to γ-type from β-type during the process of natural cooling, which is different from the traditional magnesium slag. This makes MMS characterized by non-swelling, non-powder, gelling.
In 2017, the metallurgical slag output of iron and steel enterprises in China reached more than 440 million tons, including 247 million tons of blast furnace slag and …
It is necessary to ball-mill granulated blast furnace slag (GBFS) for 12 min or longer to achieve a high surface area, over 1.9688 m 2 /g, and clinker for 24–30 min to achieve a surface area of over 2.2699 m 2 /g, as well as to maintain the water-to-cement ratio between 0.45 and 0.64.
Granulated Blastfurnace Slag Granulated Blastfurnace Slag (GBS) is manufactured from molten blastfurnace slag, a co- ... 150 kg coke coal powder and 900 m³ hot air are necessary. About 230 - 300 kg of slag is produced. ... blast-furnace slag cement containing 50 wt.-% GGBS gen-erates only 0.54 t CO 2. These data include emissions from
The synergistic effect red mud (RM) and ground granulated blast furnace slag (GGBS) in cementitious materials has been widely reported, which is attributed to improve the performance of low-clinker cement. However, the existence of synergistic effect between RM and GGBS under high-temperature steam curing conditions has rarely …
Granulated blast furnace slag (GBFS) was taken from Kirloskar Ferrous Industries Limited, Koppal, Karnataka, India, located at 15.335547° N, 76.278816° E. Marine clay was replaced by granulated blast furnace slag in various percentages (10%, 20%, 30%, 40% and 50%) and cement was added in various percentages (2%, 4%, 6%, …
Alkali activation was carried out with CG from south China and granulated blast furnace slag (GBFS) powder as raw materials. The GBFS classified as S95 according to GBT18046-2008 [34].The average particle size, specific surface area and density of CG were 16.05 μm, 350 m 2 /kg and 271 g/cm 3, respectively.The particle …
Ground granulated blast furnace slag (denoted as slag hereafter), an industrial by-product from the steel manufacture, is mainly used as mineral admixture in …
Using ground granulated blast-furnace slag (GGBS) under different alkaline conditions, we studied the mechanisms and extents of Cr(VI) reduction and sorption and compared them to reactions with Portland cement (PC). ... Removal of Hexavalent Chromium in Portland Cement Using Ground Granulated Blast-Furnace …
Ground Granulated Blast Furnace Slag (GGBS), a by-product of the iron industry produced by quenching molten slag, has cement's chemical composition. About …
Section snippets Modified magnesium slag. The modified magnesium slag sample originated from the Shenmu Dongfeng Metal Magnesium Co., LTD. The crystalline phase of C 2 S in MMS does not transition to γ-type from β-type during the process of natural cooling, which is different from the traditional magnesium slag. This makes MMS …
Ground granulated blast furnace slag (GGBS) is a by-product from the blast-furnaces used to make iron. ... The granulated slag is further processed by drying and then grinding in a rotating ball mill to a very fine powder, which is GGBS. ... Wild, S., Tilley, R.J.D.: Mechanism by which ground granulated blast furnace slag prevents …
In this research Ordinary Portland Cement (OPC), Ground Granulated Blast Furnace Slag (GGBFS), Sand, Gravel and Superplasticizers were used. The concrete mixtures were prepared with cement CEM I 42.5 with fineness of 3000 cm 2 /g and a specific gravity of 3.15. The granulated slag used a fineness of 3500 cm 2 /g and a
Spontaneous combustion gangue (SCG) is often used as aggregate in traditional cemented paste backfill (CPB) for mine backfill, but the activation of SCG is insufficient. To stimulate the activity of SCG for the preparation of spontaneous combustion gangue-granulated blast furnace slag backfill (SGB), a new CPB was prepared by …
To improve solid waste resource utilization and environmental sustainability, an alkali-activated material (AAM) was prepared using steel slag (SS), fly ash, blast …
Study on the Compressive Strength and Reaction Mechanism of Alkali-Activated Geopolymer Materials Using Coal Gangue and Ground Granulated Blast …
Granulated blast furnace slag (GBFS) is a glassy calcium-aluminum silicate coproduct with latent hydration activity produced during the blast furnace ironmaking process [21]. When the GBFS is in contact with water, a layer of calcium …
Ground granulated blast furnace slag (GGBFS) is a solid waste characterized by a high reactivity with alkali solutions, which is normally used geopolymer precursor. Fiber is often used to reinforce geopolymer. However, systematic investigation on the relationship between mechanical properties and microstructure for PVA fibers …
Section snippets Raw materials. The experiment used Portland cement 42.5P.II, produced by Xingfa Cement Co., Ltd., in Beijing, with a specific surface area of 381 m 2 /kg. The granulated blast furnace slag was provided by China Baowu Steel Group Guangdong Shaoguan Iron and Steel Co., Ltd.
Formulation of the reference cement paste is performed using mixture of cement (C) and water (W) with W/C content ratio of 0.3. Slag cement pastes are prepared with a substitution ratio of 45 wt.%.Mixture of cement (C), grinding slag (GS) and water (W) is prepared using a constant proportion throughout the formulations with a ratio W/L of …
The workability and durability of a type of sustainable concrete made with steel slag powder were investigated. The hydrated products of cement paste with ground granulated blast furnace slag (GGBFS) alone or with a combined admixture of GGBFS-steel slag powder were investigated by X-ray diffraction (XRD). Furthermore, the …
Low carbon research in precast concrete based on the synergistic mechanism of red mud-ground granulated blast furnace slag powder. Author links open overlay panel Yang Shao a, Shanliang Ma a, Siyi Li a, Danyang Chen a, Zengqi ... reaction mechanism and performance optimization. Construct. Build. Mater., 403 (2023), …
Calculations Relating to Concrete and Masonry. Sidney M. Levy, in Construction Calculations Manual, 2012 5.4.5 Ground Granulated Blast-Furnace Slag. Although portland blast-furnace slag cement, which is made by intergrinding the granulated slag with portland cement clinker (blended cement), has been used for more than 60 years, …
At present, ground granulated blast furnace slag (GGBFS), as a by-product of industrial production, is widely applied in concrete ... on the compressive strength development of cement paste incorporated with high content of wasted clay brick powder and its working mechanism. Constr. Build. Mater., 302 (2021), Article 124052.
Granulated blast furnace slag can chemically react with an alkaline activator at ambient temperature as well as high temperatures to generate stable gel formations. The reaction between slag and the alkaline activator solution within the geopolymer matrix creates a gel known as C-A-S-H (calcium-aluminate-silicate-hydrate) …
Abstract. In this study, refining slag containing high hydration active component C 12 A 7 was added in GBFS−SS−DG−based clinker−free cementitious …
2.1. Raw Materials. The alkali-activated blast furnace slag powder in this study is composed of the blast furnace slag powder, light-burned magnesia powder (MgO), potassium sodium silicate (K 2 SiO 3), sodium hydroxide (NaOH), water, expansive agent and refractory fiber.. The blast furnace slag (BFS) powder is provided by …
