Curing effect in the shrinkage of a lower strength self-compacting concrete

Oliveira, Miguel José; Ribeiro, António Bettencourt; Branco, Fernando G.

doi:10.1016/j.conbuildmat.2015.04.035

Cited by 56 publications

(21 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Therefore, after considering the fact, the steam curing increases the amount of water in the paste and deepened the hydration reaction which increases the amount of portlandite and ettringite considerably. This is clearly seen as photographed by the SEM as shown in Figure 15 be explained by Young-Laplace relation; that is, the simple equation [23] is as follows:…”

Section: Effect Of Sra and Sra + Famentioning

confidence: 99%

“…The pore size reduces both from the FA added and from the curing [23]. When the pore size reduces, the capillary pressure increases.…”

Section: Effect Of Sra and Sra + Famentioning

confidence: 99%

“…Such high shrinkage may be explained by the continuous pozzolanic reaction of the FA. While the paste already contains a large number of calcium hydroxides, the high temperature of the curing also helps stimulating the increase of the pozzolanic reaction [23] which shows the strength index that is higher than the normal curing, especially the mortar with 40% of FA added.…”

Section: Effect Of Ex + Sra and Ex + Sra + Famentioning

confidence: 99%

See 2 more Smart Citations

Effects of Shrinkage Reducing Agent and Expansive Additive on Mortar Properties

Treesuwan

Maleesee

2017

Advances in Materials Science and Engineering

View full text Add to dashboard Cite

This research is to study the effect of mortar mixed with shrinkage reducing agent (polyoxyalkylene alkyl ether type), expansive additive (CaO type), and fly ash (hereinafter "SRA," "EX," and "FA," resp.). Moreover, steam curing was studied to improve the properties of mortar. The plastic shrinkage test was conducted by using the strain gauge embedded at 0.5 cm from the surface according to the ASTM C1579-06 standard within early age followed by the total shrinkage test and compressive strength test. The test results showed that mixing both the EX and SRA increases the plastic enlargement of the mortar during the early age more than using either the EX or SRA solely. The steam curing helps to reduce the plastic shrinkage when the mortar is added with the FA and SRA while adding the EX increases the enlargement compared to the normal curing. When the EX, SRA, and FA are all added to the mortar mixing, great attention should be paid due to the increase of greater enlargement. For the compressive strength view, the steam curing increases the compressive strength in all types of mixture. The steam curing significantly helps increasing the compressive strength of mortar with combination of EX, SRA, and FA. Nevertheless, the XRD and SEM tests explain such enlargement accordingly.

show abstract

Section: Effect Of Sra and Sra + Famentioning

confidence: 99%

“…The pore size reduces both from the FA added and from the curing [23]. When the pore size reduces, the capillary pressure increases.…”

Section: Effect Of Sra and Sra + Famentioning

confidence: 99%

Section: Effect Of Ex + Sra and Ex + Sra + Famentioning

confidence: 99%

See 1 more Smart Citation

Effects of Shrinkage Reducing Agent and Expansive Additive on Mortar Properties

Treesuwan

Maleesee

2017

Advances in Materials Science and Engineering

View full text Add to dashboard Cite

show abstract

“…The speed of the concrete shrinkage growth increases too (Oliveira et al, 2015;Han et al, 2014). The specific conditions of dry and hot climate influence significantly not only on the technology of concrete works, but also on the durability of concrete.…”

Section: Introductionmentioning

confidence: 99%

Influence of the dry and hot climate conditions on the technology of concrete works

Koroteev

2017

Int. j. adv. appl. sci.

View full text Add to dashboard Cite

The climate conditions of building site influence significantly on arrangement and technology of concrete works. This influence can be positive and negative. It is necessary to assess the climate conditions with further minimization of their negative impact and employment of their positive features. It helps to design the effective arrangement and technology of concrete works on the building site. The research is devoted to the assessment of influence of the dry and hot climate conditions on the arrangement and the technology of concrete works. The hot daytime temperature and the low air humidity characterize the dry and hot climate. Its positive feature is the possibility of employment of solar energy for thermal treatment of concrete. Its negative impact is the reduction of the period of the concrete mix delivery and placement, the intensive water evaporation from concrete construction and the progress of concrete shrinkage. The possibility of getting the project strength of concrete, curing without care in the conditions of dry and hot climate, is verified under the research. The layer concrete strength is researched to assess the negative impact of climate conditions in the depth of concrete constructions. The research results and methodology, as well as the information about concrete composition and the boundary conditions of the research are given in the article. The research results testify to necessity of starting care for concrete constructions immediately after the concrete mix placement in formworks in the conditions of dry and hot climate. Keywords:Concrete works Research of concrete strength Dry and hot climate Layer strength of concrete Thermal treatment of concrete

show abstract

“…Jiang et al [3] investigated experimentally autogenous shrinkage behaviors of high performance concrete containing fly ash and blast-furnace slag exposed to different isothermal 2 Advances in Materials Science and Engineering temperatures. Oliveira et al [18] indicated that all the compositions (with or without shrinkage reducing admixtures and expansive product) have a higher long-term total shrinkage when subject to cure. Most of the previous research dealing with shrinkage of early age concrete was carried out at constant temperature.…”

Section: Introductionmentioning

confidence: 99%

Time-Dependent Behavior of Shrinkage Strain for Early Age Concrete Affected by Temperature Variation

Qin

Wang

et al. 2017

Advances in Materials Science and Engineering

View full text Add to dashboard Cite

Shrinkage has been proven to be an important property of early age concrete. The shrinkage strain leads to inherent engineering problems, such as cracking and loss of prestress. Atmospheric temperature is an important factor in shrinkage strain. However, current research does not provide much attention to the effect of atmospheric temperature on shrinkage of early age concrete. In this paper, a laboratory study was undertaken to present the time-dependent shrinkage of early age concrete under temperature variation. A newly developed Material Deformation Tester (MDT), which can simulate consecutive variation of atmospheric temperature, was used to collect the shrinkage strain of specimens and temperature data. A numerical model was established to describe the thermoelastic strain of a specimen. The results show that (1) there are several sharp shrinkages up to 600 for early age concrete in the first 3 days; (2) the absolute value of shrinkage strain is larger than thermal strain; and (3) the difference of shrinkage strain under temperature variation or constant temperature is up to 500 .

show abstract

Curing effect in the shrinkage of a lower strength self-compacting concrete

Cited by 56 publications

References 14 publications

Effects of Shrinkage Reducing Agent and Expansive Additive on Mortar Properties

Effects of Shrinkage Reducing Agent and Expansive Additive on Mortar Properties

Influence of the dry and hot climate conditions on the technology of concrete works

Time-Dependent Behavior of Shrinkage Strain for Early Age Concrete Affected by Temperature Variation

Contact Info

Product

Resources

About