Laboratory evaluation of seashells used as fine aggregate in hot mix asphalt

Ruiz, Gaby; Chávez, Francisco Andrade; Santamaría, Stephanie; Araujo, William; Timaná, Jorge; Schmitt, Robert

doi:10.1080/10298436.2018.1502435

Cited by 10 publications

(8 citation statements)

References 19 publications

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“…Moreover, following the SDGs, an additional improvement was introduced in this academic year. Apart from the standardized design of the pavement structure, some new research about more sustainable materials or construction procedures in pavements was presented, including the reutilization of previous pavements to manufacture some layers in new pavements [48][49][50][51][52][53] or the introduction of waste materials in the production of some materials [54][55][56][57][58][59][60][61][62][63][64]. Hence, students had to choose one of the recently investigated materials or procedures to propose a more sustainable pavement structure.…”

Section: Transport Infrastructurementioning

confidence: 99%

Sustainable Civil Engineering: Incorporating Sustainable Development Goals in Higher Education Curricula

et al. 2021

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In the current climate emergency context, many national and international organizations have adopted measures to integrate sustainability and Sustainable Development Goals (SDGs) in all their fields of action. Within education, steps have been taken to incorporate the perspective of sustainability at all levels. This process has also started at the university since it plays a fundamental role in the strategy for the implementation of specific policies to promote sustainability. However, sometimes it is difficult to include this type of knowledge in the curriculum, due to the lack of flexibility of the university structure or the lack of time to cover the syllabus. In this scenario, civil engineering plays a main role as a fundamental activity in the creation of services and infrastructures with a high environmental impact. The objective of this study is to show a multidisciplinary approach to working on sustainability in a transversal way in the civil engineering degree and to analyze the impact that this type of initiative can have from the learning point of view. The study shows a curricular trajectory supported by problem-based learning and project-based learning designed to promote sustainability in the practice of civil engineering. The good results obtained in the evaluation of the project and the growing incorporation of the SDGs in the final degree projects suggest that this methodology can be implemented by other university degrees.

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Section: Transport Infrastructurementioning

confidence: 99%

Sustainable Civil Engineering: Incorporating Sustainable Development Goals in Higher Education Curricula

et al. 2021

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“…On the other hand, seashell can be categorized as a good binder in asphalt mixture. However, seashell aggregate asphalt needs more asphalt content as compared to natural aggregate [4].…”

Section: Introductionmentioning

confidence: 99%

Performance of Porous Asphalt Mixture Containing Seashell as Aggregate Replacement

2021

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Porous asphalt pavement is mainly used for parking lots which able to let water to drain through the pavement surface into a stone recharge bed and infiltrate into soils under the pavement. This study is to investigate the performance of seashell in porous asphalt and determine the image analysis. The seashell used in this study is cockle shell. The strength of seashell was determined through the Aggregate Impact Value Test (AIV) and Aggregate Crushing Value Test (ACV). The grade of bitumen used was grade 60/70. The porous asphalt volumetric properties was determined through Marshall Stablity Test. The permeability coefficient of sample that contain seashell as aggregate replacement was determined through Permeability Test. Generally, the results shows that the seashell’s percentage loss (AIV and ACV) is suitable use for porous asphalt mixture, where the percentage of loss for AIV and ACV was 27.84% and 7.65% respectively. Based on the Marshall Test, porous asphalt that containing seashell as aggregate replacement shows a different result, where it had lower stability value and it can increase the bulk density of porous asphalt mixture. Furthermore, the permeability coefficient also increase. The surface of seashell able to bond with bitumen. Lastly, the trend of VFA and VTM value is effected by the surface and position of seashell in the porous asphalt sample.

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“…The stress, strain, displacement, strength, fatigue, stiffness, geometry, crack paths, two cross-section interaction, uniaxial loading, multiaxial loading, material characteristics, and embedded footings that have been investigated and reported in the literature are directly and indirectly related to strain energy dissipation and damping of the material, [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18] all of these concepts are required to apply on strain displacement of timber structure to enhance seismic design.…”

Section: Introductionmentioning

confidence: 99%

The effect of nonlinearity of acceleration histories to timber beam seismic response

Namdar

Dong

Liu

2019

Mat Design Process Comm

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The single‐span timber frame has been subjected to near‐fault ground motion. The timber beam as a structural element has numerically been analyzed. The relationship between the acceleration histories of earthquake used in the numerical analysis with strain displacement has been discussed. For the analysis on acceleration histories of the earthquake, the specific part of acceleration histories of earthquake used in the numerical analysis has been zoomed in order to deeply analyze the effect of nonlinearity of acceleration histories to timber beam seismic response. The results have shown that the nonlinearity of acceleration histories of an earthquake before it reaches the peak is different compared with after reaching the peak. The nonlinearity of acceleration histories of an earthquake phenomenon has a direct relationship with the seismic response on timber beam and the influence to the energy dissipation and nonlinear deformation of the beam.

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Laboratory evaluation of seashells used as fine aggregate in hot mix asphalt

Cited by 10 publications

References 19 publications

Sustainable Civil Engineering: Incorporating Sustainable Development Goals in Higher Education Curricula

Sustainable Civil Engineering: Incorporating Sustainable Development Goals in Higher Education Curricula

Performance of Porous Asphalt Mixture Containing Seashell as Aggregate Replacement

The effect of nonlinearity of acceleration histories to timber beam seismic response

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