Durability performance of sustainable self compacting concretes in precast products due to heat curing

Calvo, José Luis García; Alonso, C.; Luco, Luis Fernández; Velasco, M. Robles

doi:10.1016/j.conbuildmat.2016.02.097

Cited by 24 publications

(9 citation statements)

References 28 publications

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“…The primary reason for using steam in the curing of concrete is to produce high early strength, which is very desirable to the manufacturers of precast and pre-stressed concrete units [2]. There are many advantages in steam curing such as the production of concrete with high early strength, short production cycle, and superior economic benefits [3,4]. The steam curing process includes the following four phases: the delay period, the isothermal period, the heating period, and the cooling period [5].…”

Section: Introductionmentioning

confidence: 99%

The Effects of Steam-Curing on the Properties of Concrete

Boukendakdji

Touahmia

Achour

et al. 2021

Eng. Technol. Appl. Sci. Res.

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Worldwide, concrete is the most preferred construction material. The steam curing method is favored when there is a need for accelerating strength. This paper presents the study of the compressive and flexural tensile strength of concrete subjected to eight different steam cures. In addition, the stress-strain curve and the modulus of elasticity were determined at the age of 28 days. The compressive strength test results show that after treatment, strength increases with concrete maturity. A cycle with a pre-heating period gives better results than a cycle without a pre-heating period. The longer the duration of the maximum temperature period, the lower the strength drop compared to the control concrete. The best results were obtained for concrete treated according to the following cycle: a 3-hour pre-heating period at 20oC, a 2-hour increase of temperature from 20 to 70oC, and a 3 hour of maximum temperature of 70oC.

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Section: Introductionmentioning

confidence: 99%

The Effects of Steam-Curing on the Properties of Concrete

Boukendakdji

Touahmia

Achour

et al. 2021

Eng. Technol. Appl. Sci. Res.

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“…The research described above demonstrates that the temperature of the environment affects the bond strength and pore structure of concrete support assemblies during construction and early stages. When a given performance is required, the influence of heat curing on the concrete properties must be considered during the concrete design process, because heat can influence the microstructural and durability properties of the concrete [8].…”

Section: Introductionmentioning

confidence: 99%

Effect of Curing Temperature on the Durability of Concrete under Highly Geothermal Environment

Tang

Huang

et al. 2017

Advances in Materials Science and Engineering

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To determine the durability of concrete in the actual temperature and humidity of the tunnel environment, this study investigates the mechanical properties, permeability of chloride ion, relative dynamic elastic modulus, and mass loss ratio of concrete specimens cured in the temperature which varied from normal, 40, 60, 75, and 90°C, and the humidity was kept at 90% continuously. Experimental results reveal that the hot temperature curing environment may benefit early stage strength development but reduce the long-term strength. It is proved that 60°C is a critical point. At above 60°C, the strength of the concrete material and its resistance to chloride ion permeability showed a decreasing trend; however, in the appropriate temperature range, the frost resistance properties of the concrete are improved with increasing temperature.

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“…Currently available information indicates that the technique of steam curing is the most frequently employed technique among various production processes of prefabricated members [4,5]. The benefits of steam curing are as follows: simple process, convenient operation, production with high early strength, short production cycle, and superior economic benefits [5][6][7]. The steam curing process includes the following four stages: the precuring stage, the heating stage, the thermostatic stage, and the cooling stage [8,9].…”

Section: Introductionmentioning

confidence: 99%

Influence of Steam Curing Method on the Performance of Concrete Containing a Large Portion of Mineral Admixtures

Wang

Yang

2017

Advances in Materials Science and Engineering

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A comparison was made between the impact of raising the thermostatic temperature and the impact of prolonging the thermostatic time on the performance of steam-cured concrete containing a large portion of fly ash (FA) or ground granulated blast furnace slag (GGBS) by analysing the form removal strength, chemically combined water content, reaction degree, strength development, chloride permeability, and volume stability. For the materials and test conditions reported in this study, raising the thermostatic temperature is more favourable for concrete containing FA, as indicated by the significantly higher form removal strength and the higher growth of reaction degree of FA compared with prolonging the thermostatic time. With an increase in the thermostatic temperature, the hydration degree of a binder containing FA or GGBS initially increases and subsequently decreases. 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. The risk of destroying the structure of concrete containing a large portion of FA or GGBS due to delayed ettringite formation (DEF) is minimal when specimens were steam-cured at 80°C.

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Durability performance of sustainable self compacting concretes in precast products due to heat curing

Cited by 24 publications

References 28 publications

The Effects of Steam-Curing on the Properties of Concrete

The Effects of Steam-Curing on the Properties of Concrete

Effect of Curing Temperature on the Durability of Concrete under Highly Geothermal Environment

Influence of Steam Curing Method on the Performance of Concrete Containing a Large Portion of Mineral Admixtures

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