slag powder and blast furnace slag so the recycling of steel slag can bring enormous benefits and environ-mental benefit to whole society. 6. Ground granulated blast furnace slag is commonly used in combination with Portland cement in concrete for many applications[10,11] 7. The heat of hydration is dependent on the Portland
Ordinary Portland cement (OPC), ground granulated blast-furnace slag (GGBFS), and γ-C 2 S were used as binders. The OPC was Type-I grade, having a density of 3.15 g/cm 3. The densities of the GGBFS and γ-C 2 S were found to be 2.92 and 2.99 g/cm 3, respectively. The appearance of the binders is shown in Figure 1.
– in the presence of Portland cement, depends greatly upon 6]. GGBS is the finely ground powder of coarse blast furnace slag and considered as a latent hydraulic cementitious material, whose potential hydraulic activity is Corresponding author. Tel.: +86-27-68772233; .
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). We also investigated the effects of mixing PC/GGBS ratios on Cr(VI) dissolution after carbonating the substrates.
This paper attempts to measure the bleeding of Portland cement and ground granulated blast furnace slag (GGBFS) paste mixtures. To investigate the influence of water-to-powder ratio and the used powders under high pressure on bleeding, a pressure vessel and various types of freshly mixed paste were prepared.
Blast furnace slag cement is the mixture of ordinary Portland cement and fine granulated blast furnace slag obtained as a by product in the manufacture of steel with percent under 70% to that of cement. Ground granulated blast furnace slag cement (GGBFS) is a fine glassy granules which contain cementatious properties.
and the desired effects on the concrete (Helmuth 1987 and ACI 232 1996). SLAG Ground granulated blast-furnace slag (Fig. 3-5), also called slag cement, is made from iron blast-furnace slag; it is a nonmetallic hydraulic cement consisting essentially of sili-cates and aluminosilicates of …
There are two major uses of Ground granulated blast furnace slag, In the production of high quality-improved slag cement, such as Portland Blast furnace cement (PBFC) and high slag blast furnace cement (HSBFC). In such cements GGBS content ranges typically from 30 to 70%. In the production of ready-mixed concrete or site-batched durable concrete.
The present invention relates to an improved mineral binder composition comprising: - a mineral binder comprising at least 30 weight-% slag, based on the weight of the mineral binder, - an activator for the hydration of the slag consisting of or comprising calcium hydroxide and - a co-activator consisting of or comprising at least one salt selected from the group consisting of lithium ...
Colour. Ground granulated blast-furnace slag is off-white in colour and substantially lighter than Portland cement CEM I. This whiter colour is also seen in concrete made with GGBS, especially at CEM I replacement levels of 50% and above.
b) Ground Granulated Blast Furnace Slag (GGBS) Ground Granulated Blast Furnace Slag (GGBS) is a highly efficient pozzolonic material and has considerable potential for use in concrete and it is obtained from steel works at Bellary. Specific gravity being 2.62. Table: 5 Chemical properties of GGBS Sl.No. Parameter Quantity (% wt)
Slag cement is a hydraulic cement formed when granulated blast furnace slag (GGBFS) is ground to suitable fineness and is used to replace a portion of portland cement. It is a recovered industrial by-product of an iron blast furnace. Molt
Tests were performed under separate contracts at different times for three manufacturers of ground granulated blast-furnace slag to determine the performance of their products with portland cement. Physical tests were performed on pastes, mortars, and concretes to determine both freshly mixed and hardened properties.
Effect of ground granulated blast furnace slags (GGBFSs) of different grades, i.e., grades 80, 100 and 120, on fly ash based geopolymers waste forms was investigated for fixation of a concentrated Hanford secondary waste (HSW) stream simulant. The results show that higher grade GGBFS generated more hydration heat, suggesting higher reactivity ...
Slag cement is often referred to as "ground granulated blast-furnace slag" (GGBFS). As requested in 2001 by slag cement manufacturers and the Slag Cement Association, the American Concrete Institute officially reviewed and changed the terminology from GGBFS to slag cement (ACI Committee 233, 2004).
This paper discusses the synergetic effect of ground granulated blast-furnace slag and hooked-end steel fibers on the fresh, mechanical, and microstructural properties of steel fiber-reinforced self-compacting concrete containing fly ash. A total of 12 mixtures were prepared.
better alternate to the micro silica is ground granulated blast furnace slag. GGBS concrete is a type of concrete in which a part of cement is replaced with GGBS, which is an industrial waste. If concrete mix is replaced with ground granulated blast furnace slag as a partial replacement for Portland cement, it would provide environmental
ultra-fine ground granulated blast furnace slag with average grain size equal to 4.5 μm were obtained using modern grinding equipment such as centrifugal-elliptical mill and centrifugal dynamic classifier. Water-reducing effects of superplasticizer in Portland cement-slag compositions depending on types, quantity and fineness of slags
Ground granulated blast furnace slag is widely combined with Portland cement as a supplementary material, and is also used in alkali-activated binders (geopolymers) and in supersulfated cements, which are potential replacements for Portland cement with significantly reduced carbon dioxide emissions. The rheology of a cementitious material is important in terms of its influence on workability ...
Research on The Effect of Ground Granulated Blast Furnace Slag (GGBFS) on Physical Properties of Portland Cement Type I has been conducted. GGBFS with activity class of 100 was added to Portland cement at 0% (as control), 10%, 20%, 30%, 40% and 50% variation. The characteristic of compressive strength, setting time,
Supplementary cementitious materials such as blast-furnace slag (BFS) and pulverised-fuel ash have been used as a partial replacement for Portland cement (PC) in UK and international nuclear waste encapsulation for many years (Angus et al., 2010; Sharp et al., 2003).Encapsulation in a cementitious wasteform is the current preferred method of disposal of intermediate level waste in the UK ...
The hydration process of cement paste blended with ground granulated blast-furnace slag (GGBS) was investigated using calorimetric and electrical methods. The effect of GGBS on early-age hydration was studied by examining electrical resistivity …
A comprehensive study is presented on the effects of pulverised fly ash (PFA) and ground granulated blast furnace slag (GGBS) on early-age engineering properties of Portland cement (PC) systems. It has been found that partially replacing PC by PFA or GGBS resulted in longer setting times but better workability with PFA exhibiting more prominent effect than GGBS.
GET THIS BOOK Effects of Ground Granulated Blast Furnace Slag in Portland Cement Concrete. This research examined the properties of concrete containing grade 120 slag cement at replacement levels of 0%, 30%, and 50%. The primary concrete properties studied were compressive strength, split-tensile strength, and deicer scaling resistance.
The effect of Ground Granulated Blast Furnace Slag (GGBFS) on Portland cement type II to compressive strength of high quality concrete May 2020 IOP Conference Series Materials Science and ...
12 In this paper, the precursors for AAM preparations are blends of fly ash (FA) and ground granulated blast-furnace slag (GGBFS) in four slag proportions: 0%, 10%, 30% and 50% expressed as a percent of FA mass. Four alkali-activated mortars were prepared, denominated as AAM 0, AAM 10, AAM 30 and AAM 50, respectively.
Blast Furnace Slag (BFS) cement is the combination of Ordinary Portland Cement (OPC) and fine Granulated Blast Furnace Slag (GBFS) gained as a byproduct in the steel making manufacturer with below 70% to that of cement. Ground Granulated Blast Furnace Slag (GGBFS) is a fine glassy granule which encompasses cementitious possessions.
This research examined the impact of cement replacements with Grade 100 ground granulated blast furnace slag (GGBFS) on portland cement concrete performance. GGBFS was used to replace 0%, 30% and 50% of cement in a series of mixes with w/cm = 0.45 where primary variables were coarse aggregate type, cement manufacturer, and curing regime.
Abstract. To reduce the embodied carbon dioxide of structural concrete, Portland cement (PC) in concrete can be partially replaced with ground granulated blast furnace slag (GGBS). In this research effect of partial replacement of cement with GGBS on strength development of concrete and cured under summer and winter curing environments is ...
The article reports a laboratory experimental programme that investigated effect of ground granulated blast furnace (GGBS) on compressive strength of POFA ternary concrete. Compressive strength tests were performed at a range of cements combinations, including PC, two POFA levels for binary concrete, 35% and 45%, and 15%GGBS inclusion for POFA ternary concrete.
Ground granulated blast furnace slag produced by pulverizing granulated blast furnace slag is mixed with Portland cement to produce Portland blast furnace slag cement. Portland blast furnace slag cement is economical and environmentally friendly because it conserves resources and energy, leading to reduction in CO 2 emissions.
The effect of replacing 20–70 % of ordinary Portland cement (OPC) by ground granulated blast furnace slag (GGBS) on the mechanical properties, weight loss and carbon footprint of oil palm shell ...
1 Synergic effects of activation routes of ground granulated blast-furnace slag (GGBS) used in the precast industry Martin CYR1, Cédric PATAPY2 1,2 LMDC, Université de Toulouse, INSA, UPS, France 1 [email protected], 2 [email protected] Abstract - Ground granulated blast-furnace slag (GGBS)
Effect of Simultaneous Replacement of Cement with Ground Granulated Blast Furnace Slag (GGBS) and Sand with Quarry Dust in Concrete Kankatala Jagadeep1, Siva Ramaraju.V2, P.Raju3, Vamsi Nagaraju.T4 1,3,4Assistant Professor, 2Professor of Civil Engineering, SRKR Engineering College,
Effects of ground granulated blast furnace slag in Portland cement concrete : expanded study. File(s) Final report (1.079Mb) Date 2007-06. ... It was determined that concrete containing 30% and 50% replacement of ordinary portland cement (OPC) with grade 120 slag cement had a decreased initial compressive and tensile strength compared to OPC ...
Ground granulated blast furnace slag (GGBFS) is a by-product of the iron-making process and because of its high calcium silicate content it has excellent cementious content and has been used in the construction industry for years as a replacement for ordinary Portland cement (OPC).