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Effects of steam curing on strength and porous structure ...

2011-1-1  Effect of duration of initial steam curing at 50 °C on compressive strength of concrete with low water/binder ratio at furthering curing of 90 days. It could also be seen from Fig. 4 that the duration of initial steam curing at 50 ± 2 °C did affect the compressive strength and flexural strength of high performance concrete.

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Effect of Steam Curing on the Important Properties of Concrete

Research was also conducted to determine steam curing effect on drying shrinkage, dynamic modulus, weight change to 6 months’ age, and modulus of rupture. In general, concrete that has been steam cured and then air dried is not as good as concrete that has been con-tinuously fog cured or even fog cured for 7

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Effect of steam curing on surface permeability of concrete ...

2020-11-1  The surface air permeability of the steam-cured concrete was measured after standard curing for 3, 28 and 90 days. The dimension of the concrete is 100 × 100 × 100 mm. In order to investigate the effect of moisture exchange between concrete and steam-curing box during steam curing process on its hardening performance.

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Effect of Steam Curing on Compressive Strength ... - Concrete

1998-6-1  The effects of steam curing conditions such as the presteaming period and the maximum curing temperature on the compressive strength of fly ash concrete were investigated and compared with those of plain concrete in order to use fly ash for precast concrete products. The replacement ratios of cement by fly ash were 0, 20 and 40 percent.

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Influence of steam curing on the properties of concretes ...

2009-12-4  For each mixture, concrete samples were either standard-cured in water at 23°C or steam-cured at 70°C maximum temperature over 17 h curing period. Test results revealed that steam curing enhanced the 1-day compressive strength and ultrasonic pulse velocity while leading to reduced long term strength in line with earlier findings.

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Effects of curing methods of concrete after steam curing ...

The accelerated hardening of concrete caused by steam curing has adverse effects on the microstructure and properties of concrete, so it is necessary to adopt appropriate curing method to reduce the damage caused by steam curing. The effects of curing methods on the properties of concrete after steam curing are worth studying.

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Effect of steam curing on class C high-volume fly ash ...

2005-6-1  The effect of two different curing conditions on compressive strength of steam-cured concrete specimens at 28 days is presented in Fig. 5. It seems that curing in water marginally increases the compressive strength of concrete. Download : Download full-size image Fig. 5.

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COMPARISON OF DIFFERENT CURING EFFECTS ON

2009-11-6  Three heating methods are commonly used to accelerate curing: 1) Discharging steam or hot air directly into the curing environment puts the heating medium directly in contact with the concrete. 2) Enclosing steam or hot water in pipes heats the concrete by convection and radiation. 3) Attaching electrical resistance wires to the forms and covering them with insulation heats the product by heating the forms. Circulating steam around the products is one of the most widely used accelerated curing methods, primarily due to the ease of producing and transporting steam to the concrete member. It’s an efficient method that increases the temperature and maintains a 100% relative humidity around the concrete products. Steam can be produced in high or low-pressure boilers, then piped to the casting bed, or generated by smaller steam packs located close to the products. An advantage of steam is that it contains relatively large quantities of heat per pound of steam at a relatively low temperature. This provides both an effective and economical method of transferring heat from the boilers to the concrete

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Steam Curing of Concrete: Methods, and Advantages - The ...

Steam curing of concrete is the method of curing the concrete elements in water vapor. This curing is performed either under atmospheric pressure or high-pressure steam. The steam curing method is preferred where there is a need for accelerated strength gain and the concrete requires additional heat to perform hydration.

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EFFECT OF CURING METHODS ON STRENGTH OF CONCRETE

The study presents the effect of different curing methods on the compressive strength of concrete using PPC, with admixture and without admixture. The curing methods followed in this study are ...

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The Effect of Steam Curing on High Early Strength Portland ...

Since Type 30 cement is used primarily in precast and prestressed concrete operations, a project has been initiated at the Research and Technical Center of Lafarge Canada Inc. to study the effect of steam curing conditions on the properties of concrete made with Type 30 cement containing carbonate addition.

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Effect of Steam Curing on Compressive Strength of Slag ...

2017-8-31  Therefore, this study evaluates the effects of steam curing for increasing the initial strength development of concrete made using slag powder. The relationship between compressive strength, SEM observations, and XRD measurements was also investigated. The concrete made with 30% powder showed the best performance.

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EFFECT OF ATMOSPHERIC STEAM CURING PARAMETERS ON CONCRETE ...

Concrete steam curing under atmospheric pressure provides moisture and increases the temperature up to 100 o C for accelerating the curing process. ... Effect of steam curing parameters ( DT=0, 1 ...

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Effects of the different atmospheric steam curing ...

2019-4-9  application of steam curing is the steam curing cycle and cement type (Öztekin 1980). In this study, normal aggregate was used to as aggregate. Three different atmospheric Steam Curing Cycles were applied to investigate the effect of microsilica on the properties of SCC. The cement

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The Effect of Cement Type and the Atmospheric Steam Curing ...

2018-7-12  With the steam curing technology, effective fast curing technique in prefabrication technology, the effect of atmospheric steam curing on the mechanical properties of variable types of self-compacting lightweight concretes and the combination of the properties of semi-lightweight self-compacting concrete are important engineering approaches, focused in this study, in terms of

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COMPARISON OF DIFFERENT CURING EFFECTS ON

2009-11-6  keeping in open air; curing compound and steam curing. Except for steam curing system, the specimens of which were tested at the age of three days, for all other curing conditions, the compression tests were performed at the age of 28 days. It has been found that the curing system greatly influences the concrete strength.

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Influence of Steam Curing Method on the Performance of ...

2017-4-24  Although concrete containing FA can obtain satisfactory form removal strength with steam curing at 80°C, the late strength development of concrete containing FA is slow for the same curing conditions. The effect of the late performance of resistance to chloride ion permeability improved by FA is better than the effect improved by GGBS.

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Influence of Steam Curing Method on the Performance of ...

2019-7-30  ResearchArticle Influence of Steam Curing Method on the Performance of Concrete Containing a Large Portion of Mineral Admixtures MengyuanLi,QiangWang,andJunYang

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Study on Effect of Steam Curing on Frost damage of Fly

2018-4-4  by pre-cast concrete. However, the effect of fly ash concrete under steam curing on the frost damage is not fully understood. In this research the frost resistance of steam-cured fly ash concrete is studied. Concretes are cured in steam and then tested in RILEM CDF-test1). In addition, the corrosion of rebar embedded in steam-cured fly ash ...

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Influences of steam and autoclave curing on the strength ...

2016-8-16  The reaction results in a denser structure of the concrete and thus the reduced chloride permeability of concrete. Steam curing. As seen in Fig. 8, different mineral admixtures have different effects on the chloride permeability of concrete under steam curing conditions. Incorporation of 20 and 30 % slag can reduce the electrical charge passed ...

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EFFECT OF ATMOSPHERIC STEAM CURING PARAMETERS ON CONCRETE ...

Concrete steam curing under atmospheric pressure provides moisture and increases the temperature up to 100 o C for accelerating the curing process. ... Effect of steam curing parameters ( DT=0, 1 ...

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Effects of curing methods of concrete after steam curing on ...

2020-5-8  The effects of curing methods on the properties of concrete after steam curing are worth studying. The compressive strength, non-evaporable water content and permeability (air, water and ion) of steam-cured concrete were tested under different subsequent curing conditions.

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Steam curing of concrete Magazine of Concrete Research

2020-1-22  The various methods of steam curing are briefly described and preliminary laboratory data on the effect of low pressure curing are given. An approximate method for assessing the effect of a stated cycle of operations is described. The effects of time and temperature, type of aggregate, type of cement and size of specimen are discussed.

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Effects of the different atmospheric steam curing ...

2019-4-9  application of steam curing is the steam curing cycle and cement type (Öztekin 1980). In this study, normal aggregate was used to as aggregate. Three different atmospheric Steam Curing Cycles were applied to investigate the effect of microsilica on the properties of SCC. The cement

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Effect of Steam Curing on Mechanical Properties of Self ...

2015-6-1  The effect of initial steam curing and different types of mineral additives (Metakolin, Pumis, and Trass) on mechanical and durability characteristics of self-compacting concrete (SCC) was investigated and evaluated by various test methods.

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Steam Curing of Concrete: Methods, and Advantages - The ...

🕑 Reading time: 1 minute Steam curing of concrete is the method of curing the concrete elements in water vapor. This curing is performed either under atmospheric pressure or high-pressure steam. The steam curing method is preferred where there is a need for accelerated strength gain and the concrete requires additional heat to perform hydration. []

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The Effect of Cement Type and the Atmospheric Steam Curing ...

2018-7-12  With the steam curing technology, effective fast curing technique in prefabrication technology, the effect of atmospheric steam curing on the mechanical properties of variable types of self-compacting lightweight concretes and the combination of the properties of semi-lightweight self-compacting concrete are important engineering approaches, focused in this study, in terms of

Get price

Volume Deformation of Steam-Cured Concrete with Slag ...

2021-4-9  The effects of the steam-curing process and the content of slag on shrinkage deformation, hydration degree and elastic modulus of concrete were studied. The results indicate that during the steam-curing process, the concrete has an “expansion-shrinkage” pattern. After the steam curing, the deformation of concrete is dominated by drying ...

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The Influence of Steam Curing on Early-Age Compressive ...

2015-11-19  This study investigates the effect of steam curing on the early strength of mortars that include mineral admixtures. Instead of CEM I 42.5 R cement, 0, 10, 20 and 30 % of fly ash or 0, 5, 10 and 15 % of silica fume was used in the mortars. In the composition of the mortars, the fine aggregate/binder/water ratios were determined as, respectively, 3/1/0.5 by mass. 40/40/160-mm

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(PDF) EFFECT OF CURING METHOD ON THE PROPERTIES OF

This research has been undertaken to study the effect of curing method on the mechanical properties and pore structure characteristics of concrete made with blast furnace slag.

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