Effects of the curing methods on the process of plastic shrinkage of self-compacting concrete in Vietnam

Cuong, Nguyen Hung; Thuc, Luu Van; Hai, Tran Hong; Phuong, Pham Nguyen Van

doi:10.31814/stce.nuce2018-12(5)-05

Cited by 3 publications

(3 citation statements)

References 3 publications

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“…This indicates that the curing method using curing compound has created the most suitable temperature and humidity environment for the development of concrete strength. According to [14,15], the evaporation of water from conventional concrete within the range of 30-35% of the amount of water used will not have a negative impact on its structure and quality. However, based on the compressive strength test results and water evaporation, it can be seen that this is no longer true for SCC.…”

Section: Experiments Resultsmentioning

confidence: 99%

“…The water spraying-curing method, although resulting in a smaller plastic shrinkage than the noncuring method, still yields much higher shrinkage compared to the curing compound method. In addition, according to [11], when spraying water on to the concrete surface, the water on the surface will evaporate quickly, especially under hot weather conditions. In high-temperature conditions, the concrete surface is being heated, water spraying on the surface will cause thermal shock and temperature differences between the concrete regions in the cycle, and if in a short time, it can lead to concrete cracking due to thermal expansion, which in turn, will adversely affect the structure and mechanical properties of the concrete.…”

Section: Under Hot and Humid Conditions (Autumn)mentioning

confidence: 99%

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Experimental Research on Curing Self-Compacting Concrete With Curing Compound

Hung Cuong

2023

GEOMATE

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The article presents the results of an experimental study on curing self-compacting concrete with a curing compound. The experiment was carried out under two natural weather conditions: hot and dry (summer) and hot and humid (autumn), in the Hanoi area. To evaluate the effectiveness of the curing method with a curing compound, three main aspects were studied: plastic shrinkage, water evaporation, and compressive strength of the samples. The experiment was conducted with three methods: (i) using a curing compound, (ii) using water spraying and (iii) no curing. The experiments showed that the sample cured with a curing compound has the smallest plastic shrinkage, corresponding to 0.67mm/m in hot dry conditions and 0.37mm/m in hot humid condition. In addition, the sample cured with a curing compound also has the smallest rate of water evaporation, corresponding to 12.7% and 5.12% in hot and dry, and hot and humid conditions respectively. At the same time, the self-compacting concrete sample cured with a curing compound has the best R 28 sample compressive strength value, reaching 101.4% R 28 tc in hot and dry conditions and 100.9% R 28 tc in hot and humid conditions. These results, thereby, have proved the effectiveness of the curing method with a curing compound for self-compacting concrete under Vietnamese weather conditions.

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Section: Experiments Resultsmentioning

confidence: 99%

Section: Under Hot and Humid Conditions (Autumn)mentioning

confidence: 99%

Experimental Research on Curing Self-Compacting Concrete With Curing Compound

Hung Cuong

2023

GEOMATE

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“…Using wet burlap layer and polyethylene film to cover the specimens in curing condition can control the water evaporation and minimize original plastic shrinkage of SCC. According to [13], the period of plastic deformation occurred from four to five hours under humid conditions and from six to seven hours under dry conditions.…”

Section: Experiments Processmentioning

confidence: 99%

Effect of fly ash on shrinkage of self-compacting concrete using restrained ring test

Mien

Phuc

Yen

2019

STCE

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In recent years, fly ash (FA) has been increasingly used widespread like a mineral admixture for the production of concrete in general and self-compacting concrete (SCC) in particular. Fly ash is an industrial by-product and is generated during the combustion of coal for energy production from the thermal power station. Fly ash is utilized to increase the workability of concrete mixtures and increase shrinkage resistance of the selfcompacting concrete. In this paper, the mixture design of the self-compacting concrete with strength grade of 60 MPa is performed with requirement that the workability satisfies the slump flow, T 500 and the V-Funnel T V test range from 650 to 800 mm, from 2 to 5 s and from 6 to 12 s, respectively. Besides, fly ash is used to replace cement with content of 15%, 25%, 35% and 50% to evaluate shrinkage resistance. The obtained results showed that using fly ash contents from 25% to 35% to replace cement can ensure workability of the mixture together with high degree of shrinkage restraint. According to ASTM C1581, the evaluation of restrained shrinkage of the self-compacting concrete based on the restrained ring test, this method reduces the testing time but still ensure the reliability.

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An experimental investigation on the utilization of crushed sand in improving workability and mechanical resistance of concrete

Nguyen

Lam

2022

Construction and Building Materials

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Effects of the curing methods on the process of plastic shrinkage of self-compacting concrete in Vietnam

Cited by 3 publications

References 3 publications

Experimental Research on Curing Self-Compacting Concrete With Curing Compound

Experimental Research on Curing Self-Compacting Concrete With Curing Compound

Effect of fly ash on shrinkage of self-compacting concrete using restrained ring test

An experimental investigation on the utilization of crushed sand in improving workability and mechanical resistance of concrete

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