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concrete cement substitutes ggbs pfa and more

concrete cement substitutes ggbs pfa and more

Which of the following cement replacement material is ...

(ii) Differences Between GGBS and PFA The use of GGBS as replacement of cement enhances smaller reliance on PFA. In particular, GGBS is considered to be more compatible with renewable energy source objectives. The replacement level of GGBS can be as high as 70% of cement, which is about twice as much of PFA (typically replacement level is 40%).

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Sustainable Studies on Concrete with GGBS As a Replacement ...

Table 2. Mix proportions of concrete with various proportions of GGBS replacing cement in M35 grade concrete Mix propotions Controlled concrete 20% GGBS 30% GGBS 40% GGBS W/C ratio 0.41 GGBS content % - 20 30 40 GGBS content (wt) - 0.8 kg 1.2 kg 1.6 kg Cement content 4 kg 3.2 kg 2.8 kg 2.8 kg Sand content 5.186 kg

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Effects of PFA and GGBS on Early-Ages Engineering ...

PC by PFA or GGBS resulted in longer setting times but better workability with PFA exhibiting more prominent effect than GGBS. As the replacement level increased, the setting of both PFA and GGBS pastes further delayed but workabil-ity of concrete was enhanced. PFA concretes exhibited consistently lower compression and splitting tensile strengths

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Durability of Concrete Containing PFA-GGBS By-products

concrete produced from 2060% PFA or GGBS were also evaluated- . This 20-60% PFA or GGBS were used to replace PC to reduce the carbon footprint of the concrete, utilising high amounts of industrial by- product additives and at the same time producing a workable concrete. 2. Methodology . 2.1 Materials . Pulverised Fuel Ash (PFA)used was in ...

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Durability of Concrete Containing PFA-GGBS By-products

Ground Granulated Blast-furnace Slag (GGBS) and Pulverised Fuel Ash (PFA) were used to replace up to 60% of Portland cement (PC) in concrete. The testing program of the concrete included the ...

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THE SORPTION AND POROSITY OF GGBS-PFA TERNARY

THE SORPTION AND POROSITY OF GGBS-PFA TERNARY BLENDED CEMENT CONCRETE 1Cheah Chee Ban and 2Chow Wee Kang, 1,2School of Housing, Building and Planning, Universiti Sains Malaysia 11800, Penang, Malaysia [email protected], [email protected], 2 ABSTRACT Ternary blended concrete is an environmentally friendly alternative to the

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Effects of PFA and GGBS on Early-Ages Engineering ...

PC by PFA or GGBS resulted in longer setting times but better workability with PFA exhibiting more prominent effect than GGBS. As the replacement level increased, the setting of both PFA and GGBS pastes further delayed but workabil-ity of concrete was enhanced. PFA concretes exhibited consistently lower compression and splitting tensile strengths

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Sustainable Studies on Concrete with GGBS As a Replacement ...

Table 2. Mix proportions of concrete with various proportions of GGBS replacing cement in M35 grade concrete Mix propotions Controlled concrete 20% GGBS 30% GGBS 40% GGBS W/C ratio 0.41 GGBS content % - 20 30 40 GGBS content (wt) - 0.8 kg 1.2 kg 1.6 kg Cement content 4 kg 3.2 kg 2.8 kg 2.8 kg Sand content 5.186 kg

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Which of the following cement replacement material is ...

(ii) Differences Between GGBS and PFA The use of GGBS as replacement of cement enhances smaller reliance on PFA. In particular, GGBS is considered to be more compatible with renewable energy source objectives. The replacement level of GGBS can be as high as 70% of cement, which is about twice as much of PFA (typically replacement level is 40%).

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GGBS; sustainable alternative to Portland Cement LKAB ...

As a by-product of existing industrial processes, GGBS is even more sustainable than many other cement substitutes such as fly ash. Our products conform to BS EN 15167-1. This is the British standard for the use of Ground Granulated Blast furnace Slag in concrete, mortar and grout. GGBS counts fully towards the cement content of concrete mixes ...

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Alternative Cement substitutes materials - Constro Facilitator

Oct 12, 2019  Very occasionally, it can be found up to a ratio of 90% GGBS and 10% Pc. Concrete made with GGBS cement sets more slowly than concrete made with ordinary Portland cement, depending on the amount of GGBS in the cement mix, but also continues to gain strength over a longer period leading to improved overall durability and life expectancy. Silica fume

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Durability of Concrete Containing PFA-GGBS By-products

concrete produced from 2060% PFA or GGBS were also evaluated- . This 20-60% PFA or GGBS were used to replace PC to reduce the carbon footprint of the concrete, utilising high amounts of industrial by- product additives and at the same time producing a workable concrete. 2. Methodology . 2.1 Materials . Pulverised Fuel Ash (PFA)used was in ...

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THE SORPTION AND POROSITY OF GGBS-PFA TERNARY

THE SORPTION AND POROSITY OF GGBS-PFA TERNARY BLENDED CEMENT CONCRETE 1Cheah Chee Ban and 2Chow Wee Kang, 1,2School of Housing, Building and Planning, Universiti Sains Malaysia 11800, Penang, Malaysia [email protected], [email protected], 2 ABSTRACT Ternary blended concrete is an environmentally friendly alternative to the

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The sorption and porosity of GGBS-PFA ternary blended ...

Dense and impermeable microstructure formed when more GGBS was added and undergo longer curing time [39][40] [41]. Hydrotalcite was formed within the binder phase of GGBS blended concrete, which ...

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A study of the durability of OPC vs. GGBS concrete on ...

proved that GGBS concrete is better at both resisting chloride ingress and alkali-silica reactions than PC concrete while other authors proved that GGBS increases sulfate resistance (Higgins 2003, Binici and Aksogan 2006) and decreases the chloride diffusion coefficient and chloride ion permeability (Luo et al. 2003 and Yun Yeau and Kyum Kim 2005).

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Resource recovery and low carbon transitions: The hidden ...

Nov 01, 2018  When producing concrete, pulverised fly ash (PFA) from coal combustion or ground granulated blast-furnace slag (GGBS) from primary steel production can replace up to 55% wt. or 80% wt., respectively, of the required cement (Leese and Casey, 2015), which is by far the most carbon intensive ingredient of concrete .

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Beyond Portland cement: Low-carbon alternatives - The ...

Almost all of the GGBS and PFA currently produced in the UK is already being used, primarily in concrete, so specifying these SCMs does not necessarily help to reduce construction sector emissions. In addition, most slag production is localised to a few iron-producing countries, whereas cement demand is far more pervasive.

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Carbon Dioxide (CO2) Emissions of Concrete

It is 3 to 4 times more expensive than times more expensive than Portland cement. v _ _ _ CeramiCreteCeramiCrete Ceramicrete concrete ... (PFA) Possible Alternatives 2 ... 2 in GGBS PFA • For C32/40 concrete mix, reduction of eCO 2

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Future trends for PFA in cementitious systems

The following figures are typical uses for PFA within the UK in the last two years. Application for PFA – recent typical annual PFA production ~Tonnes Cement raw material 200,000 Blended Cement 100,000 Concrete Addition 550,000 Non-aerated concrete blocks

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INDUSTRIAL BY-PRODUCTS AS POSSIBLE ALTERNATIVES TO GGBS ...

Properties of high-strength concrete mixes containing PFA and ggbs Authors: P. L. Domone , M. N. Soutsos Source: Magazine of Concrete Research, Volume 47, Issue 173 , 1 Dec 1995 (355–367)

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Effects of PFA and GGBS on Early-Ages Engineering ...

PC by PFA or GGBS resulted in longer setting times but better workability with PFA exhibiting more prominent effect than GGBS. As the replacement level increased, the setting of both PFA and GGBS pastes further delayed but workabil-ity of concrete was enhanced. PFA concretes exhibited consistently lower compression and splitting tensile strengths

get price

Sustainable Studies on Concrete with GGBS As a Replacement ...

Table 2. Mix proportions of concrete with various proportions of GGBS replacing cement in M35 grade concrete Mix propotions Controlled concrete 20% GGBS 30% GGBS 40% GGBS W/C ratio 0.41 GGBS content % - 20 30 40 GGBS content (wt) - 0.8 kg 1.2 kg 1.6 kg Cement content 4 kg 3.2 kg 2.8 kg 2.8 kg Sand content 5.186 kg

get price

GGBS; sustainable alternative to Portland Cement LKAB ...

As a by-product of existing industrial processes, GGBS is even more sustainable than many other cement substitutes such as fly ash. Our products conform to BS EN 15167-1. This is the British standard for the use of Ground Granulated Blast furnace Slag in concrete, mortar and grout. GGBS counts fully towards the cement content of concrete mixes ...

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Geopolymer Concrete, A Carbon-Neutral Alternative to Cement

Geopolymer concrete is set to become more widely used, but its market penetration will probably remain limited. Kilgour explains: “In Australia, there are two players in the market and they can only produce so much. Longer term, there is also likely to be a problem with the supply of GGBS and PFA.“

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Carbon Dioxide (CO2) Emissions of Concrete

It is 3 to 4 times more expensive than times more expensive than Portland cement. v _ _ _ CeramiCreteCeramiCrete Ceramicrete concrete ... (PFA) Possible Alternatives 2 ... 2 in GGBS PFA • For C32/40 concrete mix, reduction of eCO 2

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Aggregates market investigation: Addendum to provisional ...

AGGREGATES, CEMENT AND READY-MIX CONCRETE MARKET INVESTIGATION ... production of PFA was seasonal, with more being produced in the winter months ... substitute for PFA and GGBS. 6 would equal a total PFA and limestone sales in the region of 1 million tonnes per year. 7. 10. The estimates of total PFA sales in GB that were contained in the ...

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Future trends for PFA in cementitious systems

The following figures are typical uses for PFA within the UK in the last two years. Application for PFA – recent typical annual PFA production ~Tonnes Cement raw material 200,000 Blended Cement 100,000 Concrete Addition 550,000 Non-aerated concrete blocks

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Concrete Alternatives For Greener Construction Initiatives ...

Jul 17, 2019  Pulverized Fuel Ash (PFA): Commonly known as fly ash, a by-product of burning coal, is recovered from the gases emitted during the combustion process of coal and used as a cement substitute. It is used in combination with Portland cement (cement cannot be fully replaced by PFA because it relies on the water and lime from the cement for part of ...

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How To Make High Quality Low Cost Concrete

Nov 23, 2018  PFA can't be used completely as a substitute for cement, because it relies on the water and lime from the cement to hydrate as part of the overall chemical reaction. ... Concrete made with GGBS ...

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Is there an alternative to cement for construction of ...

Cement is a common binder used for bounding of two construction materials (like aggregate, Sand, etc). The most common use of cement in construction is for the manufacturing of Concrete. The use of Cement, Manufacturing of Cement has environmental...

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Ground Granulated Blast Furnace Slag - an overview ...

Ground granulated blast-furnace slag, more commonly referred to as slag or slag cement, is a by-product of steel production. Slag is primarily composed of CaO, SiO 2, aluminum oxide (Al 2 O 3 ), and magnesium oxide (MgO). When used as part of a portland cement concrete, slag reacts with both the water (latent hydraulic reaction) and the ...

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CPD 24 2015: Introduction to ground granulated blast ...

Oct 20, 2015  Concrete with a cement content containing 50% GGBS will have a setting time of approximately half an hour longer than cement-only concrete, at the same water-cement ratio and ambient temperature. Tests are recommended to ensure the correct mix ratios. Formwork removal for sections 0.5m thick is not generally delayed by using GGBS.

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Is there any replacement for cement as a construction ...

Is there any replacement for cement as a construction material? Cement is indeed a construction material. At least in the UK and Australia, where it was first used well over a century ago. Other countries will probably catch up. As you are aware, ...

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Industrial by-products as possible alternatives to GGBS ...

Sep 04, 2003  Davies, L. J., Hunt, G., Williams, Keith Philip and Barr, B. 2003. Industrial by-products as possible alternatives to GGBS and PFA in the precast concrete market. Presented at: Role of cement science in sustainable development : International Symposium dedicated to Professor Fred Glasser, University of Aberdeen, Scotland, Dundee, UK, 3-4 September 2003.

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