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Carbonation Curing of Precast Fly Ash Concrete Journal

Carbonation Curing of Precast Fly Ash Concrete Journal

Carbonation Curing of Precast Fly Ash Concrete Journal ...

Nov 11, 2016  The feasibility of carbonation curing of precast fly ash concrete is studied. If fly ash concrete can be produced by carbonation curing, the carbon

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Carbonation Curing of Precast Fly Ash Concrete Journal ...

Nov 11, 2016  The feasibility of carbonation curing of precast fly ash concrete is studied. If fly ash concrete can be produced by carbonation curing, the carbon

get price

(PDF) Carbonation Curing of Precast Fly Ash Concrete

Jun 03, 2016  The feasibility of carbonation curing of precast fly ash concrete is studied. If fly ash concrete can be produced by carbonation curing, the carbon

get price

Carbonation Curing of Precast Fly Ash Concrete

Carbonation Curing of Precast Fly Ash Concrete Duo Zhang, S.M.ASCE1; Xinhua Cai2; and Yixin Shao3 Abstract: The feasibility of carbonation curing of

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Carbonation of Fly Ash Concrete

Apr 01, 2000  For concrete with 50% fly ash it may be necessary to increase the design strength (e.g. by 4 Mpa) or extent the period of moist curing (e.g. from 1 to 3 days) to

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Carbonation Curing versus Steam Curing for Precast ...

Sep 09, 2012  An investigation was conducted into the beneficial utilization of captured CO 2 for early-age curing of precast concrete products. The performance of the

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Review on carbonation curing of cement-based materials ...

Oct 01, 2017  Journal of CO2 Utilization. Volume 21, October 2017, Pages 119-131. ... Carbonation curing of precast fly ash concrete. J. Mater. Civ. Eng. (2016), p.

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Effect of Surface Treatments and Texture on the ...

Jan 18, 2013  This paper discusses the influence of surface treatments on the carbonation rates of fly ash concrete (0%, 25% and 50%) for the purpose of evaluating

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Durability Performance of Precast Fly Ash–Based Geopolymer ...

Mar 03, 2018  This study investigates the durability of precast fly ash–based geopolymer concrete (GPC) exposed to an outdoor atmospheric environment for 8 years. Core

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Carbonation of a low-calcium fly ash geopolymer concrete

In contrast, Khan et al. (2017) proposed the carbonation rates of geopolymer concrete with slag and low-calcium fly ash in natural environment as 2.57 mm/year

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Storing CO2 in Built Infrastructure: CO Carbonation of ...

Carbonation of Precast Concrete Products . Technology Background. Coal-fire power plants. Novel Infrastructure Materials • Faster production; • Longer durability; • Lower life-cycle cost Flue gas CO 2 Fly ash Target product: Railway ties CO 2 + unhydrated cement. CO 2 + hydration products . Precast Industry Carbonation Curing Engineered ...

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Carbonation of fly ash concrete Magazine of Concrete ...

May 25, 2015  The carbonation of fly ash concrete is reported, with particular emphasis on the role of curing. Concretes with nominal strength grades C25, C35 and C45 and a range of fly ash levels (0–50%) were exposed to various treatments during the first 28 days; i.e. different moist curing periods anda range of ambient temperatures and relative humidities after curing.

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Carbonation curing of cement mortars incorporating ...

Sep 01, 2021  As for the carbonation curing of concrete containing mineral admixtures such as fly ash, ground granulated blast furnace slag and limestone, though the strength improvement of carbonation for these admixtures is relatively low, it was ever reported that the introduce of fly ash and limestone can facilitate the diffusion of CO 2 in cement paste.

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Carbonation of Concrete Incorporating High Volumes of Fly Ash

Mar 22, 2006  A further increase in the moist curing from 28 to 91 days did not substantially affect the carbonation depth of the control concretes and the HVFA concrete using the high reactive fly ash. The depth of carbonation in concrete was also found to significantly depend on the reactivity of fly ash used; in general, the depth of carbonation deceased ...

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FOR PRECAST / PRESTRESSED CONCRETE PRODUCTS - fly ash

2 Ravina, Dan, “Efficient Utilization of Coarse and Fine Fly Ash in Precast Concrete by Incorporating Thermal Curing”, American Concrete Institute Journal,

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durability characteristics Journal of the South african ...

curing method that can be adopted by precast concrete industries. eXPeriMental PrograMMe Materials ASTM C 150 Type I Portland cement with a specific gravity of 3.15 was used in this study to prepare the concrete specimens. A class F fly ash was used to prepare the concrete mixture, consisting of a blend of Portland cement and fly ash. Table 1 shows

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(PDF) STRENGTH ASSESSMENT OF FLY ASH CONCRETE WITH

An experimental study was conducted on high volume fly ash concrete (HVFA) with a constant binder content of 603.2 kg/m3 to investigate the effect of ASTM class C and class F fly ash in concrete.

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POTENTIAL OF CARBON DIOXIDE ABSORPTION IN CONCRETE ...

Abstract: Cement industry contributes to 5% of global CO2 emissions. To mitigate pollution, there is a need of CO2 sequestration into stable forms. Present research focusses on CO2 being channelized towards an important construction practice. This paper summarizes the potential of CO2 absorption in concrete. To verify CO2 absorption in concrete, an artificial CO2 environment for curing of ...

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Deep Learning Modelling and Generalisation of Carbonation ...

Dec 21, 2020  Buenfeld et al. classified 39 independent variables for carbonation prediction into environmental factors (region, external, sheltered), concrete factors (water-to-cement ratio, cement type, air content), curing and duration of concrete carbonation, for the prediction of carbonation depth in concrete structures. The dataset was extracted from ...

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Experimental Study on Durability Improvement of Fly Ash ...

Jun 09, 2014  In order to improve the durability of fly ash concrete, a series of experimental studies are carried out, where durability improving admixture is used to reduce drying shrinkage and improve freezing-thawing resistance. The effects of durability improving admixture, air content, water-binder ratio, and fly ash replacement ratio on the performance of fly ash concrete are discussed in this paper.

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Yixin Shao Civil Engineering - McGill University

Mahoutian, M. and Shao, Y. (2016) “Low temperature synthesis of cement from ladle slag and fly ash”, Journal of Sustainable Cement-Based Materials, 5(4), 247-258. Zhang, D. and Shao, Y. (2016), “Early age carbonation curing for precast reinforced concretes”,

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Mitigating CO2 emissions of concrete manufacturing through ...

Oct 29, 2019  Browse more than 70 science journal titles. ... carbonation during mixing [38–41], and carbonation with recycled concrete aggregate (RCA) . ... Zhang D, Cai X and Shao Y 2016 Carbonation curing of precast fly ash concrete J. Mater.

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The Performance of Carbonation-Cured Concrete

Carbonation curing is a new method of curing that is different from the natural carbonation of mature concrete. As the main hydration product in mature concrete, calcium-silicate-hydrate (C-S-H), reacts with atmospheric CO 2, eventually becoming a silica gel and losing its binding capability in the process of natural carbonation.However, carbonation curing of concrete means that the concrete ...

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Carbonation of Concrete Research Papers - Academia

During wet curing, the alkali concrete compounds, such as calcium hydroxide, can be leached out to the curing solution, due to the pH gradient between concrete and curing solution. In the presence of high volume fly ash cementitious blends, there is a decrease in concrete

get price

Carbonation of fly ash concrete Magazine of Concrete ...

May 25, 2015  The carbonation of fly ash concrete is reported, with particular emphasis on the role of curing. Concretes with nominal strength grades C25, C35 and C45 and a range of fly ash levels (0–50%) were e...

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Understanding Carbonation - National Precast Concrete ...

Jul 20, 2015  To avoid carbonation, remember that it’s more prevalent in concrete with a high w/cm, high water content, low cement content, or where a short curing period or inappropriate curing methods are used. Concrete containing large quantities of supplementary cementitious materials, namely fly ash or slag, may also experience an increased rate of ...

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durability characteristics Journal of the South african ...

curing method that can be adopted by precast concrete industries. eXPeriMental PrograMMe Materials ASTM C 150 Type I Portland cement with a specific gravity of 3.15 was used in this study to prepare the concrete specimens. A class F fly ash was used to prepare the concrete mixture, consisting of a blend of Portland cement and fly ash. Table 1 shows

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Autogenous healing of Engineered Cementitious Composites ...

Autogenous healing of Engineered Cementitious Composites (ECC) based on MgO-fly ash binary system activated by carbonation curing Duo Zhanga, Haoliang Wub, Victor C. Lia, Brian R. Ellisa,⇑ a Department of Civil and Environmental Engineering, University of Michigan, Ann Arbor, MI 48109, United States bJiangsu Key Laboratory of Urban Underground Engineering Environmental Safety, Institute ...

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CONCRETE Optimizing the Use of Fly Ash in Concrete

utilization of fly ash in concrete began (for example, USBR 1948) follow-ing the pioneering research conducted at the University of California, Berkeley (Davis 1937).The last 50 years has seen the use of fly ash in concrete grow dramatically with close to 15 million tons used in con-crete, concrete products and grouts in the U.S. in 2005 (ACAA ...

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(PDF) STRENGTH ASSESSMENT OF FLY ASH CONCRETE WITH

An experimental study was conducted on high volume fly ash concrete (HVFA) with a constant binder content of 603.2 kg/m3 to investigate the effect of ASTM class C and class F fly ash in concrete.

get price

Determination of CO2 capture during accelerated ...

Mar 30, 2019  The technology of cement-based materials has been expanded, by the integration of carbonation curing with precast concrete processing [11, 12]. High reactive mineral additions have been used to improve the CO 2 uptake in concrete, such as kiln dust [

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Indian Concrete Journal

Carbonation and its effect on microstructure of concrete with fly ash and ground granulated blast furnace slag B. S. Dhanya, Sundar Rathnarajan, Manu Santhanam, Radhakrishna G. Pillai and Ravindra Gettu Carbonation induced corrosion of the embedded steel reinforcement is a major deterioration mechanism of reinforced concrete structures, mainly in inland / highway environments of tropical ...

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The Performance of Carbonation-Cured Concrete

Carbonation curing is a new method of curing that is different from the natural carbonation of mature concrete. As the main hydration product in mature concrete, calcium-silicate-hydrate (C-S-H), reacts with atmospheric CO 2, eventually becoming a silica gel and losing its binding capability in the process of natural carbonation.However, carbonation curing of concrete means that the concrete ...

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The Performance of Carbonation-Cured Concrete. - Abstract ...

Nov 12, 2019  When carbonation curing technology is applied in precast concrete, it not only reduces the carbon emissions of precast concrete products, but also improves the performance of precast concrete. It is well known that the carbonation reaction lowers the pH value of concrete and may cause corrosion of steel [ 16 ].

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Review on carbonation curing of cement-based materials ...

Abstract Carbonation for the curing of cement-based materials has been gaining increased attention in recent years, especially in light of emerging initiatives regarding carbon emissions. This article reviews the status quo of the carbonation curing process with insight into the approach’s scientific premise, industrial scalability, and commercial spin-offs.

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Experimental Study on Durability Improvement of Fly Ash ...

Jun 09, 2014  In order to improve the durability of fly ash concrete, a series of experimental studies are carried out, where durability improving admixture is used to reduce drying shrinkage and improve freezing-thawing resistance. The effects of durability improving admixture, air content, water-binder ratio, and fly ash replacement ratio on the performance of fly ash concrete are discussed in this paper.

get price

Carbonation of Concrete Research Papers - Academia

During wet curing, the alkali concrete compounds, such as calcium hydroxide, can be leached out to the curing solution, due to the pH gradient between concrete and curing solution. In the presence of high volume fly ash cementitious blends, there is a decrease in concrete

get price