Characterization of hydraulically bound base materials through digital image correlation

Barišić, Ivana; Dokšanović, Tihomir; Draganić, Hrvoje

doi:10.1016/j.conbuildmat.2015.03.033

Cited by 24 publications

(12 citation statements)

References 24 publications

(27 reference statements)

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“…In addition, there was an improvement in this parameter with curing time, since hydration is a time-dependent process. The development rate of UCS, in general, is proportional to the amount of cement because the more cement in the mixture the more the hydration products (Barišić et al 2015) and hence the more the strengthening and binding effect.…”

Section: Accepted M Manuscriptmentioning

confidence: 99%

Effect of cementation level on performance of rubberized cement-stabilized aggregate mixtures

2016

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An investigation and comparison is made of the effect of cement content on the performance of rubberized cement-stabilized aggregate mixtures and on cement-stabilized aggregate mixtures containing no rubber (RCSAMs and CSAMs). These materials are intended to be used as a base course for pavement structures. Three cement contents (3%, 5%, and 7% by dry weight of aggregate) were investigated. Rubberized mixtures were manufactured by replacing 30% of one aggregate fraction that has a similar gradation of crumb rubber.Performance was evaluated under static and dynamic testing. The investigated properties are unconfined compressive strength, indirect tensile strength, indirect tensile static modulus, toughness, dynamic modulus of elasticity, dynamic modulus of rigidity and dynamic Poisson's ratio. Increasing cement content increases strength of both types of mixtures, especially in the CSAMs. It is found that using crumb rubber at low cement content is more feasible than with high cement contents. Stiffnesses increased for both types of mixture as cement content increased but decreased on incorporation of crumb rubber. Energy absorption capacity was inversely related to stiffness. Mesostructural investigation revealed that the cracks were propagated through the rubber particles for all cement contents.

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Section: Accepted M Manuscriptmentioning

confidence: 99%

Effect of cementation level on performance of rubberized cement-stabilized aggregate mixtures

2016

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“…However, due to unusual aspects of behaviour and based on results obtained on bio-ash stabilised soil, as elaborated in the previous sections, E was measured during compressive strength testing. In order to obtain the most accurate results and to eliminate problems with surface conditions and adequate specimen-instrument contact throughout loading [21], rigid ring extensometers are replaced by “virtual” extensometers, i.e., DIC. Such an application highlights the primary advantages of utilising a 3D DIC system, the possibility to monitor stress and strain of an entire surface, and the possibility to gain insight into deformation distribution and redistribution with load increase.…”

Section: Resultsmentioning

confidence: 99%

“…DIC is a non-destructive, non-contact method used for determination of loaded object surface deformation, i.e., it allows us to track displacements in a field of view of applied cameras (Figure 2). It can be utilised using a single camera (2D) or two camera (3D) setup, and further details on this method and its potential application are presented in [21]. Spatial DIC measurements for the purpose of this study were implemented using a GOM Aramis 3D optical deformation analysis system, along with its corresponding software package.…”

Section: Methodsmentioning

confidence: 99%

Feasibility of Agricultural Biomass Fly Ash Usage for Soil Stabilisation of Road Works

et al. 2019

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Agricultural biomass ash is a waste material produced by incineration of residue from fields after harvesting crops. The use of agricultural biomass in industry produces large quantities of ash that represent an ecological problem. Another ecological problem is the dependency of road building on natural materials, which has been traditionally used for all pavement layers. Today, roads are built on less accessible and suitable terrains, increasing the need for improving the mechanical characteristics of locally available materials by various means of stabilisation. Within this research, three agricultural biomass fly ashes are used as lime substitutes for hydraulically stabilised soil. The purpose of this research is evaluation of potential use of agricultural biomass fly ash for the soil stabilisation of road works, i.e., for embankment and subgrade purposes. The results indicate that there is a potential of using barley, sunflower seed shells and wheat fly ash as lime substitutes in the soil stabilisation of road works. The strength characteristics of stabilised soil incorporating biomass fly ash are highly dependent on its chemical composition. Using a three-dimensional digital image correlation technique, it is concluded that the elastic properties of stabilised soil correlate to a fracture mechanism that can be efficiently defined by this modern research tool.

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“…The biggest challenge is the correct measurement of the displacement given the rough, uneven, and, at times, loose surface of the samples (Figure 4). As pointed out in [44], test results can be inconsistent, varying greatly among samples within the same mixture, making this method difficult and time-consuming. Therefore, in this research, the 3D-DIC method was applied for the non-contact measurement of sample displacements and deformations with the calculation of the modulus of elasticity according to the specified norm.…”

Section: Spatial Digital Image Correlation (3d-dic System)mentioning

confidence: 99%

Pavement Structure Characteristics and Behaviour Analysis with Digital Image Correlation

2023

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Digital image correlation (DIC) is a method of point displacement measurement by an optical system. If two cameras are used for capturing the same point displacement, three-dimensional data are obtained using the 3D-DIC method. The areas of application of this method in pavement construction are diverse, but it is mainly used for displacement monitoring during standard tests of the failure of specimens due to load application. Furthermore, DIC technology was used only for testing particular material characteristics and assuming their influence on the overall pavement system. Within this research, DIC was applied in two areas: defining material mechanical characteristics and analyses of pavement structure behaviour under cyclic loading. The scope of this research was to gain more insights into DIC’s potential application within pavement behaviour analyses, specifically on cement-bound granular material (CBGM) characterisation. Results from this study confirm the suitability of 3D-DIC technology for pavement material characterisation. Furthermore, it is shown that certain trends of material behaviour defined on the simple material level of each independent pavement layer will significantly differ when it is placed in the system, and this kind of complex analysis is possible by using 3D-DIC technology.

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Characterization of hydraulically bound base materials through digital image correlation

Cited by 24 publications

References 24 publications

Effect of cementation level on performance of rubberized cement-stabilized aggregate mixtures

Effect of cementation level on performance of rubberized cement-stabilized aggregate mixtures

Feasibility of Agricultural Biomass Fly Ash Usage for Soil Stabilisation of Road Works

Pavement Structure Characteristics and Behaviour Analysis with Digital Image Correlation

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