Study on effects of solar radiation and rain on shrinkage, shrinkage cracking and creep of concrete

Asamoto, Shingo; Ohtsuka, Ayumu; Kuwahara, Yuta; Miura, Chikako

doi:10.1016/j.cemconres.2011.03.003

Cited by 52 publications

(21 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Moisture interaction between the concrete specimen and the environment is prevented throughout the duration of temperature changes. This aims to assess the cracking potential of a cementitious system due to autogenous deformations (autogenous shrinkage/expansion and thermal dilation) and has been used in several occasions thereafter 60–68 . The temperature and strain histories, as well as cracking age, are used to evaluate the cracking sensitivity of a potential mix, whilst tensile stresses in concrete can be calculated based on the obtained strain histories 59 .…”

Section: State Of the Art Review Of Longitudinal Testing Devicesmentioning

confidence: 99%

“…A schematic drawing of the rig recommended by JCI is illustrated in Figure 7. It has to be noted that although JCI initially suggested a 1.5‐m‐long beam to be considered in order to ensure adequate anchorage length for concrete and rebar, relatively recent studies indicated that specimen length can be reduced to 1 m or even less, 60,64–68 without compromising for sufficient bonding between the concrete and the rebar, which also depends on the shrinkage and tensile strength characteristics of the investigated concrete, as well as on the diameter of the reinforcing bar used.…”

Section: State Of the Art Review Of Longitudinal Testing Devicesmentioning

confidence: 99%

See 1 more Smart Citation

Longitudinal restraining devices for the evaluation of structural behaviour of cement‐based materials: The past, present and prospective trends

Kanavaris

Azenha

Schlicke

et al. 2020

Strain

View full text Add to dashboard Cite

The problem of thermal and shrinkage cracking in concrete has been long recognised by researchers and engineers as it can jeopardise the intended serviceability of a concrete structure. This has led researchers to develop testing devices which aim to simulate the behaviour of concrete under restrained deformations. Such devices are discerned in passive and active, depending on how concrete's movement is restrained, whilst a new type of devices has been developed to account for the combined effects of intrinsic restrained deformations and externally imposed actions. This paper presents a detailed and critical literature review on the developed restraining devices and an analysis of the capabilities, complexities and peculiarities associated with their use. Further to this, the challenges the developers of testing devices are faced with, the gaps and uncertainties with the methods found in the literature and recommendations for potential improvements in the field are discussed. K E Y W O R D Screep and shrinkage, heat of hydration, restraining devices, restraint, shrinkage cracking, thermal cracking, viscoelasticity

show abstract

Section: State Of the Art Review Of Longitudinal Testing Devicesmentioning

confidence: 99%

Section: State Of the Art Review Of Longitudinal Testing Devicesmentioning

confidence: 99%

Longitudinal restraining devices for the evaluation of structural behaviour of cement‐based materials: The past, present and prospective trends

Kanavaris

Azenha

Schlicke

et al. 2020

Strain

View full text Add to dashboard Cite

show abstract

“…Degradation of concrete applied in concrete structure, the reinforced concrete structure, the steel‐concrete composite structures, etc., which has been frequently occurred due to the initiation and propagation of cracks, has attracted more and more attention in recent years although concrete was once treated as a durable maintenance‐free construction material. The reduction of mechanical property and deleterious volume change in constrained condition, due to external loading and shrinkage actions, respectively, easily leads to the initiation and propagation of cracks, which may provide a direct path for penetration for the water and chloride ions into concrete. Accordingly, mechanical and shrinkage properties of concrete are two important parameters for the design of concrete structures, and thereby it is essential to investigate the two properties of concrete to improve the serviceability, durability, and the aesthetic quality of concrete structures.…”

Section: Introductionmentioning

confidence: 99%

Experimental study on the compressive strength and shrinkage of concrete containing fly ash and ground granulated blast‐furnace slag

Zhang

2019

Structural Concrete

View full text Add to dashboard Cite

This paper presents an experimental investigation on the compressive strength and shrinkage (drying shrinkage and plastic shrinkage) property of concrete specimens with fly ash (FA) and ground granulated blast-furnace slag (GGBS), and moreover, the content level and curing age were considered in this experiment. The resultsshow that the addition of FA and GGBS has a significant effect on the compressive strength and shrinkage properties of concrete. It indicated that the compressive strength of specimens decreases gradually due to the reduction of cement hydration products, when the curing age is less than 14 days. Nevertheless, once the curing time exceeds 7 days, the compressive strength increases initially and then decreases. Similarly, the compressive strength of concrete with GGBS increases slightly at first and then decreases, when the content level exceeds the critical value. The variety rule of plastic shrinkage cracks with FA and GGBS is similar to that of compressive strength; however, the variety rule of drying shrinkage strain is contrary to the above experimental results. Furthermore, in the early stage of curing, the GGBS is the main factor on improving strength and drying shrinkage properties, though for the later stage, the FA becomes the main factor instead of GGBS. K E Y W O R D S compressive strength, drying shrinkage, fly ash, ground granulated blast-furnace slag, plastic shrinkage

show abstract

“…The analytical point of this study is how to treat the precipitation including snow cover (Asamoto et al 2011;Shimomura 2015). The upper surface of each segment was assumed to be exposed to the stagnant condensed water for every hour when it rains.…”

Section: Preliminary Experiments For Precipitation Boundarymentioning

confidence: 99%

Long-Term Differential and Averaged Deformation of Box-Type Pre-stressed Concrete Exposed to Natural Environment

Chijiwa

Hayasaka

Maekawa

2018

ACT

View full text Add to dashboard Cite

Middle-scale box-sectional hollow PC ducts, which consist of heterogeneous concrete with different mix proportions, were exposed to natural environments for about three years, and the long-term curvature and axial mean deformation, which have much to do with deflection of long span bridge viaducts, was gaged for verification of coupled thermo-hygral and multi-scale models. The associated internal moisture and the local climate inside micro-pores were measured and the effect of precipitation was quantified over yearly four seasons. The moisture migration linked with concrete multi-scale mechanics was analyzed and the simulation results are compared with the field exposure tests. The reliability of the thermo-hygral analysis, which has been used for estimating the long-term serviceability of bridges, was made firmer.

show abstract

Study on effects of solar radiation and rain on shrinkage, shrinkage cracking and creep of concrete

Cited by 52 publications

References 10 publications

Longitudinal restraining devices for the evaluation of structural behaviour of cement‐based materials: The past, present and prospective trends

Longitudinal restraining devices for the evaluation of structural behaviour of cement‐based materials: The past, present and prospective trends

Experimental study on the compressive strength and shrinkage of concrete containing fly ash and ground granulated blast‐furnace slag

Long-Term Differential and Averaged Deformation of Box-Type Pre-stressed Concrete Exposed to Natural Environment

Contact Info

Product

Resources

About