Experimental studies in Ultrasonic Pulse Velocity of roller compacted concrete pavement containing fly ash and M-sand

Rao, Sreenivasa; Sravana, P.; Rao, T. C.

doi:10.1016/j.ijprt.2016.08.003

Cited by 103 publications

(43 citation statements)

References 25 publications

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“…As can be seen from Figure 8, the elastic modulus at 28 days of age of all RCCP mixtures in this study was in the range of 30 GPa to 36 GPa. This range of values is found to be similar to that of conventional RCCP provided by a number of former scholars [28,33,34]. Therefore, the delay in compaction slightly affected the elastic modulus of RCCP.…”

Section: Elastic Modulus Of Rccpsupporting

confidence: 80%

EAF Slag Aggregate in Roller-Compacted Concrete Pavement: Effects of Delay in Compaction

Lam

Jaritngam

2018

Sustainability

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This study investigates the effect of delay in compaction on the optimum moisture content and the mechanical propertie s (i.e., compressive strength, ultrasonic pulse velocity, splitting tensile strength, and modulus of elasticity) of roller-compacted concrete pavement (RCCP) made of electric arc furnace (EAF) slag aggregate. EAF slag with size in the range of 4.75-19 mm was used to replace natural coarse aggregate in RCCP mixtures. A new mixing method was proposed for RCCP using EAF slag aggregate. The optimum moisture content of RCCP mixtures in this study was determined by a soil compaction method. The Proctor test assessed the optimum moisture content of mixtures at various time after mixing completion (i.e., 0, 15, 30, 60, and 90 min). Then, the effect of delay in compaction on the mechanical properties of RCCP mixtures at 28 days of age containing EAF slag aggregate was studied. The results presented that the negative effect on water content in the mixture caused by the higher water absorption characteristic of EAF slag was mitigated by the new mixing method. The optimum water content and maximum dry density of RCCP experience almost no effect from the delay in compaction. The compressive strength and splitting tensile strength of RCCP using EAF slag aggregate fulfilled the strength requirements for pavement with 90 min of delay in compaction.

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Section: Elastic Modulus Of Rccpsupporting

confidence: 80%

EAF Slag Aggregate in Roller-Compacted Concrete Pavement: Effects of Delay in Compaction

Lam

Jaritngam

2018

Sustainability

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“…The increased ultrasonic velocity of RHAPMC reveals that cracks are sealed and blocked by polymers, thus improving the quality of concrete more than that of RHA blended concrete. From the results, UPV of the RHAPMC ranges from 4.24 to 4.26 mm/s which falls within the prescribed limit of medium to excellent quality (3.660{4.575 mm/s) [21]. Based on the provided range, RHAPMC falls in the excellent quality of concrete.…”

Section: Materials and Methods 21 Materialsmentioning

confidence: 63%

A New Approach to Improve Durability of Rice Husk Ash Blended Concrete with Re-Dispersible Polymer Powder

et al. 2018

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An experimental investigation was conducted to improve the limitation of Rice Husk Ash (RHA) blended concrete in terms of durability by incorporating re-dispersible polymer powder. To investigate the durability properties of Rice Husk Ash Polymer-Modi ed Concrete (RHAPMC) matrix, the RHAPMC mix of 1:2:3 proportions was used to prepare specimens. To prepare Rice Husk Ash-Modi ed Mix (RHAMM), 10% of RHA was replaced with cement. RHAPMC was made with the inclusion of polymer at a ratio of 1 to 7.5% by the weight of cement. The most common durability-related properties including water absorption, density, water permeability, ultrasonic pulse velocity, and compressive strength were experimentally investigated. The results showed a remarkable improvement in durability characteristics in the newly developed matrix of RHAPMC, which could be used as a repair material in an aggressive environment.

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“…There are many studies in the literature that presented the use of NDT in different applications such as to find a defect in polymers and a metallic structure [33]. Among the available methods of NDT, ultrasonic pulse velocity has been effectively used for the detection of cracks in a concrete structure for many decades but in the literature, the use of this technology is not too much in the testing asphalt concrete [34][35][36]. The time of travel is measured electronically with a device when the ultrasonic wave is passed through the specimen.…”

Section: Ultrasonic Pulse Velocity Testmentioning

confidence: 99%

Symmetric Performance Analysis for Mechanical Properties of Sustainable Asphalt Materials under Varying Temperature Conditions: An Application of DT and NDT Digital Techniques

Anwar¹,

Shah²,

Sadiq³

et al. 2020

Symmetry

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During the development of symmetric asphalt concrete material samples, aggregates play a vital role in the performance of its production. Shape characteristics and aggregates geology are two major factors influencing strength parameters of the asphalt concrete mix. In this study, two different geological sources of aggregates with different shape characterizations have been utilized for the development of the asphalt concrete mix. In addition to that, the stability analysis has been performed under different temperature conditions ranging between 25 and 60 • C. By the application of the destructive technique (DT) and non-destructive technique (NDT), the performance of the asphalt concrete mix has been analyzed and compared based on the geology of aggregates under various temperatures. Furthermore, a statistical model has been developed to analyze the stability and performance of the developed asphalt concrete mix with reference to regional climatic conditions. This study will help in the development of symmetric formation of sustainable asphalt materials.Symmetry 2020, 12, 433 2 of 12 bound and unbound condition come from part of or the whole engineering or building structure [4]. The mechanical performance of an aggregate in asphalt pavement has been studied in previous research and presented an approach to find out its response of an unbound coarse aggregate [5]. Damages to highways mostly takes place on surface roads, one of the main reasons is the weakness of a bond between the bitumen binding and the aggregates. Thus, a bond should be enhanced and to improve the antistripping properties of asphaltic concrete. Stripping is the phenomenon of surface tension between the aggregates and binder. The failure of the asphalt pavement due to several distress such as rutting on the variation of rut depth due to traffic load have been studied using statistical analysis [6]. The several types of distress including creep, rutting, shoving, cracking, and low stability are resulting in stripping due to the ingredient's compatibility. When the ingredients are used in correct proportions, they provide the best-expected service quality [7,8]. The performance of asphalt concrete by using the design method and rehabilitation timing and the result revealed that the road surface was greatly influenced due to traffic load and environmental conditions [9]. The temperature effect is also a key factor that has a direct influence on the viscosity of bitumen, which affects its ability to bond and provide adequate bonding for aggregates in Hot Mix Asphalt (HMA) paving mixes. Therefore, the performance of the asphalt mixture under the effect of increasing and decreasing temperatures is needed to be studied. Low stability in the asphalt mixture leads to various types of distress [10,11]. The maximum load resisting by the specimen before failure is the stability strength of that specimen. An arrangement of the Marshall test [12] is like an indirect tensile strength test [13], but the sample placed in the Marshall test head is within a certa...

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Experimental studies in Ultrasonic Pulse Velocity of roller compacted concrete pavement containing fly ash and M-sand

Cited by 103 publications

References 25 publications

EAF Slag Aggregate in Roller-Compacted Concrete Pavement: Effects of Delay in Compaction

EAF Slag Aggregate in Roller-Compacted Concrete Pavement: Effects of Delay in Compaction

A New Approach to Improve Durability of Rice Husk Ash Blended Concrete with Re-Dispersible Polymer Powder

Symmetric Performance Analysis for Mechanical Properties of Sustainable Asphalt Materials under Varying Temperature Conditions: An Application of DT and NDT Digital Techniques

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