Influence of key parameters on drying shrinkage of cementitious materials

Bissonnette, Benoı̂t; Pierre, P.; Pigeon, M.

doi:10.1016/s0008-8846(99)00156-8

Cited by 310 publications

(98 citation statements)

References 9 publications

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“…This concrete shrinkage may influence the performance of the CFFT columns in the long term, and hence it is important to quantify and understand the shrinkage behavior of these members. This is of particular importance for CFFTs manufactured with HSC due to the potential of higher levels of shrinkage associated with higher strength concretes [27,28].…”

Section: Introductionmentioning

confidence: 99%

An Experimental Study on Shrinkage Strains of Normal- and HighStrength Concrete-Filled FRP Tubes

Vincent¹

2018

Nanomaterials, Functional and Composite Materials

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Abstract.It is now well established that concrete-filled fiber reinforced polymer (FRP) tubes (CFFTs) are an attractive construction technique for new columns, however studies examining concrete shrinkage in CFFTs remain limited. Concrete shrinkage may pose a concern for CFFTs, as in these members the curing of concrete takes place inside the FRP tube. This paper reports the findings from an experimental study on concrete shrinkage strain measurements for CFFTs manufactured with normal-and high-strength concrete (NSC and HSC). A total of 6 aramid FRP (AFRP)-confined concrete specimens with circular cross-sections were manufactured, with 3 specimens each manufactured using NSC and HSC. The specimens were instrumented with surface and embedded strain gauges to monitor shrinkage development of exposed concrete and concrete sealed inside the CFFTs, respectively. All specimens were cylinders with a 152 mm diameter and 305 mm height, and their unconfined concrete strengths were 44.8 or 83.2 MPa. Analysis of the shrinkage measurements from concrete sealed inside the CFFTs revealed that embedment depth and concrete compressive strength only had minor influences on recorded shrinkage strains. However, an analysis of shrinkage measurements from the exposed concrete surface revealed that higher amounts of shrinkage can occur in HSC. Finally, it was observed that shrinkage strains are significantly higher for concrete exposed at the surface compared to concrete sealed inside the CFFTs.

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Section: Introductionmentioning

confidence: 99%

An Experimental Study on Shrinkage Strains of Normal- and HighStrength Concrete-Filled FRP Tubes

Vincent¹

2018

Nanomaterials, Functional and Composite Materials

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“…Cracks allow water and chemical agents, such as deicing salt, to go through the cover layer to make contact with the reinforcement, leading to reinforcement corrosion and rupture in steel reinforced concrete. The magnitude of the shrinkage strain is normally proportional to the amount of moisture loss (Bissonnette et al 1999;Baroghel-Bouny et al 1999;Ayano and Wittmann 2002;Zhang et al 2010). In general, environmental drying and cement hydration are the two major processes causing moisture loss inside the concrete.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Shrinkage Induced Cracking in Concrete with Impact of Internal Curing and Water to Cement Ratio

Zhang

Han

Zhang

2016

ACT

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In this paper, the effect of internal curing with pre-soaked lightweight aggregate (PSLWA) on shrinkage and interior relative humidity of four series concretes with compressive strength at 28 days around 30MPa, 60MP, 90MPa and 100MPa is investigated. The shrinkage induced cracking performance of concretes is evaluated with concrete-steel composite ring tests. The results show that the development of the internal relative humidity of concrete since casting exhibits first a vapor saturated stage (RH=100%, stage I), followed by gradually reducing stage (RH<100%, stage II). Under sealing, internal relative humidity at the center of the specimen for a given age is obviously decreased with increase of concrete strength. Under drying, similar internal relative humidity value is observed at 28 days for all concretes without internal curing. As PSLWA was added, the reduction rate on interior humidity in stage II is significantly decreased. But the efficiency on internal humidity rising is greatly influenced by concrete strength. The autogenous shrinkage is increased with increase of concrete strength. The drying shrinkage is decreased with increase of concrete strength. The total shrinkage of concrete is increased with increase of concrete strength. As PSLWA was added, the shrinkage reduction in both autogenous and drying shrinkages is obviously in high strength concretes, such as 90MPa and 100MPa concretes. The shrinkage reduction of internal curing on relatively low strength concrete, such 30MPa and 60MPa concrete is not obvious. Internal curing with PSLWA can greatly improve the shrinkage induced cracking performance. All concrete rings without internal curing are cracked under drying. The compressive strain in the steel ring at the concrete ring cracking is about 75 to 101μm/m. By contrast, the stable compressive strain at the inner steel ring for the concretes with internal curing becomes 10 to 40μm/m and no visible cracks were found on the specimens.

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“…Although all mechanisms are not yet described at microscale, the phenomena at mesoscale are quite well understood: (i) water bleeding occurs simultaneously to material segregation, (ii) when bleeding water disappears due to drying, menisci appear at material surface and capillary pressure increases into the material, (iii) leading eventually to cracking [1][2][3].…”

Section: Introductionmentioning

confidence: 99%

Plastic shrinkage of inert and cement-based materials: characterization and comparison

Luo¹,

Bégaud²,

Delaplace³

et al. 2016

Proceedings of the 9th International Conference on Fracture Mechanics of Concrete and Concrete Structures

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Abstract. The plastic behavior of inert and cement-based materials is analyzed in this study. We show that a Cam-Clay-based model is relevant to describe the consolidation regime of the material during the plastic regime. For inert materials, the model is successfully used to evaluate the capillary pressure corresponding to the plastic cracking. To assess the cracking risk of the material, the volumetric deformation, the mechanical behavior in the plastic regime and the air entry pressure have to be characterized.

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Influence of key parameters on drying shrinkage of cementitious materials

Cited by 310 publications

References 9 publications

An Experimental Study on Shrinkage Strains of Normal- and HighStrength Concrete-Filled FRP Tubes

An Experimental Study on Shrinkage Strains of Normal- and HighStrength Concrete-Filled FRP Tubes

Evaluation of Shrinkage Induced Cracking in Concrete with Impact of Internal Curing and Water to Cement Ratio

Plastic shrinkage of inert and cement-based materials: characterization and comparison

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