Log in

Relevant bibliographies by topics / Virgin aggregates / Journal articles

To see the other types of publications on this topic, follow the link: Virgin aggregates.

Journal articles on the topic 'Virgin aggregates'

Author: Grafiati

Published: 3 June 2025

Last updated: 31 July 2025

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the top 50 journal articles for your research on the topic 'Virgin aggregates.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Browse journal articles on a wide variety of disciplines and organise your bibliography correctly.

1

Zhang, Ji Zhong, Wei Qiang Wang, and Na Li. "Self-Organization Behavior of Sub-Micron CdO Grains Grown during Vapour-Solid Transition." Defect and Diffusion Forum 278 (July 2008): 45–54. http://dx.doi.org/10.4028/www.scientific.net/ddf.278.45.

Full text

Abstract:

Various deposits of CdO grains were observed on the surface of N 100 silicon crystals heated at 580 °C and 620 °C for 1 hour in an evaporation-deposition device, respectively. The ball-shaped crystals, and regular-prism-shaped crystals were found on top of bush-like long crystals. Two types of CdO self-organization aggregates were also observed, that is, regular circular-shaped dense aggregate and long-chainshaped aggregate. The self-organization aggregates were composed of numerous submicron CdO grains. The relationship between self-organization aggregates and surface defects of virgin N 1

APA, Harvard, Vancouver, ISO, and other styles

2

Chelelgo, Kiplagat, Zachary C. Abiero Gariy, and Stanley Muse Shitote. "Laboratory Mix Design of Cold Bitumen Emulsion Mixtures Incorporating Reclaimed Asphalt and Virgin Aggregates." Buildings 8, no. 12 (2018): 177. http://dx.doi.org/10.3390/buildings8120177.

Full text

Abstract:

Bitumen emulsion asphalts, especially those incorporating marginal and secondary aggregates, are energy efficient, environment friendly, and sustainable alternatives to hot-mix asphalts. This study set out to compare engineering properties of a bitumen emulsion asphalt composed entirely of virgin aggregates with another composed of 55% reclaimed asphalt and 45% virgin aggregates. The aggregates were bound with a slow setting cationic bitumen emulsion composed of 65% base bitumen and 35% water. Marshall specimens molded at varying pre-mix water and bitumen emulsion contents were cured in molds

APA, Harvard, Vancouver, ISO, and other styles

3

O.A.U, UCHE. "INFLUENCE OF RECYCLED CONCRETE AGGREGATE (RCA) ON COMPRESSIVE STRENGTH OF PLAIN CONCRETE." Continental J. Engineering Sciences 3 (July 22, 2008): 30–36. https://doi.org/10.5281/zenodo.833667.

Full text

Abstract:

This paper presents the findings of an investigation on the influence of recycled aggregate concrete (RCA) as a substitute for virgin coarse aggregate in the compressive strength of `plain concrete. Recycled aggregate concretes were produced together with virgin coarse aggregates and subjected to empirical tests which include grading, specific gravity, bulk density, water absorption, aggregate impact value (AIV) and aggregate crushing value (ACV) to ascertain their performances. Mix design was carried out for grade 30 concrete according to DoE (1975) and RCA percentages of 0, 25, 50, 75, and 1

APA, Harvard, Vancouver, ISO, and other styles

4

Zuluaga-Astudillo, Daniel Alberto, Hugo Alexander Rondón-Quintana, and Carlos Alfonso Zafra-Mejía. "Mechanical Performance of Gilsonite Modified Asphalt Mixture Containing Recycled Concrete Aggregate." Applied Sciences 11, no. 10 (2021): 4409. http://dx.doi.org/10.3390/app11104409.

Full text

Abstract:

Hot-mix asphalts exposed to hot weather and high traffic volumes can display rutting distress. A material that can be used to increase the stiffness of asphalt binders is gilsonite. On the other hand, from an environmental point of view, the virgin natural aggregates of asphalt mixtures can be replaced with recycled concrete aggregates. For these reasons, this study modified the asphalt binder with gilsonite by wet-process to improve rutting resistance, and replaced (by mass and volume) part of the coarse fraction of the aggregate with recycled concrete aggregate in two hot-mix asphalts with d

APA, Harvard, Vancouver, ISO, and other styles

5

Plati, Christina, Maria Tsakoumaki, and Andreas Loizos. "Quality Assurance of Steel Slag Asphalt Mixtures for Sustainable Pavement Surface Courses." Recycling 9, no. 5 (2024): 91. http://dx.doi.org/10.3390/recycling9050091.

Full text

Abstract:

The present study investigates the use of electric arc furnace (EAF) steel slag, a by-product of the steel industry, in asphalt pavement surface courses instead of virgin aggregates (VAs). Therefore, a general performance evaluation of such mixtures compared to conventional mixtures is carried out through laboratory and in situ tests, while both mixtures are environmentally assessed using the life cycle assessment (LCA) tool. The results of the laboratory and in situ tests show that asphalt mixtures containing granulated EAF slag aggregates perform as well as mixtures containing only VA. In ad

APA, Harvard, Vancouver, ISO, and other styles

6

Navaz, Aaliya, and Anju Paul. "A review on characteristics of pervious concrete using recycled aggregate." Sustainability, Agri, Food and Environmental Research 10, no. 1 (2021): 1–8. http://dx.doi.org/10.7770/safer-v10n1-art2451.

Full text

Abstract:

Pervious concrete is a mixture of cement, coarse aggregate mixed with water. The absence of fine aggregate helps increase the voids and water can pass through these gaps and reaches to ground level. The use of recycled coarse aggregates from construction and demolition is a sustainable solution with many environmental benefits and also reduces the number of virgin aggregates to be created, hence reducing the extraction of natural resources. This paper reviews the research developments of pervious concrete by replacing natural aggregates with different percentages of recycled coarse aggregate.

APA, Harvard, Vancouver, ISO, and other styles

7

De Pascale, Beatrice, Piergiorgio Tataranni, Alessandra Bonoli, and Claudio Lantieri. "Comparative Life Cycle Assessment (LCA) of Porous Asphalt Mixtures with Sustainable and Recycled Materials: A Cradle-to-Gate Approach." Materials 16, no. 19 (2023): 6540. http://dx.doi.org/10.3390/ma16196540.

Full text

Abstract:

The road and construction sectors consume a large number of natural resources and energy, contributing significantly to waste generation and greenhouse gas emissions (GHG). The use of recycled aggregate from construction and demolition waste as a substitute for virgin aggregate is a current practice in the construction of new road sections. Additionally, in recent years, there has been an increasing focus on finding alternatives to bitumen for binders used in asphalt mixes. This study investigates and compares the impacts associated with two porous asphalt mixtures produced with CDW aggregates

APA, Harvard, Vancouver, ISO, and other styles

8

Robert, B. Ataria, S. T. Orumu, and A. TrustGod John. "Durability of concrete made with recycled aggregates- Review." Journal of Scientific and Engineering Research 9, no. 12 (2022): 119–26. https://doi.org/10.5281/zenodo.10532037.

Full text

Abstract:

<strong>Abstract</strong> Due to the increasing demolition of existing civil engineering infrastructures, as well as the building industry's sustainability and carbon reduction ambitions, the necessity to use recycled aggregates from construction and demolition wastes for new projects cannot be overstated. The rapidly expanding construction industry necessitates the use of recycled aggregates to substitute natural aggregates for sustainability reasons and to save the environment from mining operations. Many studies have been conducted over the last few decades on the use of recycled aggregate

APA, Harvard, Vancouver, ISO, and other styles

9

Skocek, Jan, Alexandre Ouzia, Encarnacion Vargas Serrano, and Nicolas Pato. "Recycled Sand and Aggregates for Structural Concrete: Toward the Industrial Production of High-Quality Recycled Materials with Low Water Absorption." Sustainability 16, no. 2 (2024): 814. http://dx.doi.org/10.3390/su16020814.

Full text

Abstract:

Concrete recycling to produce aggregates is crucial in reducing the demand for virgin materials in the construction industry, particularly for the most widely used building material—concrete. A potential solution to enhance the quality of recycled aggregates involves the removal of the adhered cement paste from their surfaces. In this study, samples of industrial demolished concrete were selectively separated into recycled sands and aggregates while removing the hydrated cement paste. The recycled materials were characterized to assess their suitability for structural concrete production. The

APA, Harvard, Vancouver, ISO, and other styles

10

Velumani, Senthil Kumar, and Sreevidya Venkatraman. "Assessing the Impact of Fly Ash and Recycled Concrete Aggregates on Fibre-Reinforced Self-Compacting Concrete Strength and Durability." Processes 12, no. 8 (2024): 1602. http://dx.doi.org/10.3390/pr12081602.

Full text

Abstract:

Driven by the insatiable demand for construction materials, excessive quarrying for natural aggregates and the demand for raw materials for cement production pose significant environmental challenges, including habitat loss and resource depletion. To address these concerns, this study investigates the use of fibre-reinforced self-compacting concrete (FR-SCC) with high-volume fly ash (HVFA) and varying levels of recycled concrete aggregates (RCA) as substitutes for fine and coarse aggregates. This approach aims to simultaneously address environmental concerns by reducing reliance on virgin reso

APA, Harvard, Vancouver, ISO, and other styles

11

Kawakami, Atsushi, Kazuyuki Kubo, Iwao Sasaki, and Takashi Kano. "Study on the Recycling Method for Drainage Asphalt Pavement and Evaluation for its Durability." Advanced Materials Research 723 (August 2013): 664–69. http://dx.doi.org/10.4028/www.scientific.net/amr.723.664.

Full text

Abstract:

In Japan, drainage asphalt pavement (DAP) is widely used especially on the highway and the express way. However, because of the existing porous asphalt materials consist of DAP use polymer modified bitumen, and the aggregate gradation of DAP is differ from conventional mixture, it is difficult to use those porous asphalt materials as the recycled aggregate for reclaimed asphalt pavement. Therefore, the recycling method for recycled DAP which were consisted of recycled porous asphalt materials and virgin aggregates has not been established yet. This paper describes that the recycling method for

APA, Harvard, Vancouver, ISO, and other styles

12

Saghafi, Mahdi, Nader Tabatabaee, and Soheil Nazarian. "Performance Evaluation of Slurry Seals Containing Reclaimed Asphalt Pavement." Transportation Research Record: Journal of the Transportation Research Board 2673, no. 1 (2019): 358–68. http://dx.doi.org/10.1177/0361198118821908.

Full text

Abstract:

Preventive pavement maintenance methods such as slurry seals are cost-effective treatments that increase the longevity of pavements. The incorporation of recycled materials such as reclaimed asphalt pavement (RAP) into asphalt pavement helps to further reduce costs and energy consumption. The present research studied the feasibility of incorporating RAP into slurry seal mixtures or RAP slurry seals. Two slurry seal mixtures containing cement and hydrated lime as fillers were tested. The first mixture comprised slurry seal made with virgin aggregate and the second used RAP as the aggregate. The

APA, Harvard, Vancouver, ISO, and other styles

13

Jat, Arun Kumar. "Mix Design of Emulsion Treated Reclaimed Asphalt Pavement and Its Implementation at Field." International Journal for Research in Applied Science and Engineering Technology 9, no. 12 (2021): 2372–423. http://dx.doi.org/10.22214/ijraset.2021.39724.

Full text

Abstract:

Abstract: Reclaimed asphalt pavement (RAP) is a valuable, high quality material that can be replace over expensive virgin aggregates and binder that can be used for technical, economical and environmental reasons. Use of RAP can be favored all over the world over virgin material on the light of increasing cost of bitumen, the scarcity of high quality aggregates and the pressing need to preserve the environment. Overlay and maintenance resolve medium distress, but reconstruction may feasible and economical while Asphalt pavement are badly deteriorated with time and traffic. This requires the re

APA, Harvard, Vancouver, ISO, and other styles

14

Al-Bayati, Nadheer Khaled, and Mohammed Qadir Ismael. "Effect of differently treated recycled concrete aggregates on Marshall properties and cost-benefit of asphalt mixtures." Sustainable Engineering and Innovation 5, no. 2 (2023): 127–40. http://dx.doi.org/10.37868/sei.v5i2.id201.

Full text

Abstract:

Marshall properties are one of the major requirements for designing hot asphalt mixtures. These properties need to be evaluated to make sure that asphalt pavement performs well over its service life. The evaluation of the Marshall properties of asphalt mixtures containing coarse recycled concrete aggregates (RCA) was the study's main target. RCA properties differ from virgin aggregate in the presence of cement mortar. To improve RCA properties, two methods were adopted. The first, termed pre-soak treatment, consisted of soaking RCA in acetic acid for 24 hours at a concentration of 0.1 M. The s

APA, Harvard, Vancouver, ISO, and other styles

15

Saravanakumar, P. "Strength and Durability Studies on Geopolymer Recycled Aggregate Concrete." International Journal of Engineering & Technology 7, no. 2.24 (2018): 370. http://dx.doi.org/10.14419/ijet.v7i2.24.12087.

Full text

Abstract:

This paper aims to study the engineering and durability properties of fly ash-based geopolymer recycled aggregate concrete and the results were presented in this paper. The addition of recycled coarse aggregate (RCA) retrieved from construction and demolition(C&D) wastes showed promising function in construction industry as an alternative to natural aggregates. It conserves enormous quantities of natural resources and reduces the space required for the landfill disposal of C&D wastes. In this study an increment of 25% partial replacements by weight of natural aggregates with recycled a

APA, Harvard, Vancouver, ISO, and other styles

16

Galderisi, Antonio, Miguel Bravo, Gianluca Iezzi, Giuseppe Cruciani, Eleonora Paris, and Jorge de Brito. "Physico-Mechanical Performances of Mortars Prepared with Sorted Earthquake Rubble: The Role of CDW Type and Contained Crystalline Phases." Materials 16, no. 7 (2023): 2855. http://dx.doi.org/10.3390/ma16072855.

Full text

Abstract:

Construction and demolition waste (CDW) from earthquake rubbles was used here as recycled aggregates (RA) in cementitious binders. The materials were sorted in six groups: concrete (CO), natural stone (NS), tile (TI), brick (BR), perforated brick (PF) and roof tile (RT). The abundance (wt.%) of crystalline phases in each RA type was determined by X-ray Powder Diffraction (XRPD). Each group of RAs was used alone (100 wt.% of RA) and mixed with quartz-rich virgin aggregates (VA) to prepare 13 types of mortars (12 specimens per type): one reference mortar (RM) with only VA, six recycled aggregate

APA, Harvard, Vancouver, ISO, and other styles

17

Vivek, K. Viswanath, Sankar K. P. Vilas, P. S. Abhilasha, and Alosta M. "Performance of Self Compacting Concrete Replaced with Saturated Recycled Aggregate." International Journal of Engineering and Advanced Technology (IJEAT) 9, no. 6 (2020): 505–10. https://doi.org/10.35940/ijeat.C6369.089620.

Full text

Abstract:

The use of recycled aggregate in any concrete saves the virgin coarse and fine aggregates to create for the production of concrete. This concept will deliver an ecofriendly, reduced eviction of natural resources and produce a green concrete concept. Coarse aggregate consists of more than 60% of total volume in ordinary concrete but only 40% is required for Self Compacting Concrete (SCC) by weight. Demolished concrete wastes which are crushed and sieved to the size are used as substitute for natural coarse aggregates. In this paper natural coarse aggregate in self-compacting concrete is replace

APA, Harvard, Vancouver, ISO, and other styles

18

Huang, Baoshan, Guoqiang Li, Dragan Vukosavljevic, Xiang Shu, and Brian K. Egan. "Laboratory Investigation of Mixing Hot-Mix Asphalt with Reclaimed Asphalt Pavement." Transportation Research Record: Journal of the Transportation Research Board 1929, no. 1 (2005): 37–45. http://dx.doi.org/10.1177/0361198105192900105.

Full text

Abstract:

This paper presents a laboratory study in which the blending process of reclaimed asphalt pavement (RAP) with virgin mixture was analyzed through controlled experiments. One type of screened RAP was blended with virgin (new) coarse aggregate at different percentages. A blended mixture containing 20% of screened RAP was subjected to staged extraction and recovery. The result from this experiment indicated that only a small portion of aged asphalt in RAP actually participated in the remixing process; other portions formed a stiff coating around RAP aggregates, and RAP functionally acted as “comp

APA, Harvard, Vancouver, ISO, and other styles

19

Ali, Syed Ashik, Paul Cancino Arevalo, Musharraf Zaman, Royce W. Floyd, Zahid Hossain, and Javier Rojas-Pochyla. "Durability of Recycled Concrete Aggregate as a Pavement Base Material Including Drainage: A Laboratory and Simulation Study." Sustainability 17, no. 13 (2025): 6050. https://doi.org/10.3390/su17136050.

Full text

Abstract:

Recycled concrete aggregates (RCAs) have the potential to be used as a sustainable, cost-effective, and environmentally friendly material in pavement base construction. However, there is a lack of information on the durability, strength, and hydraulic properties of RCA. The primary purpose of this study was to evaluate the properties and performances of commonly available RCAs in Oklahoma as pavement bases through laboratory testing and AASHTOWare Pavement ME simulations. For this purpose, three RCAs (RCA-1, RCA-2, and RCA-3) and a virgin limestone aggregate (VLA-1) were collected from local s

APA, Harvard, Vancouver, ISO, and other styles

20

Odero, Brian Jacks, Raphael N. Mutuku, Timothy Nyomboi, and Zachary A. Gariy. "Contribution of Surface Treatment on Physical and Mechanical Properties of Recycled Concrete Aggregates." Advances in Civil Engineering 2022 (July 15, 2022): 1–17. http://dx.doi.org/10.1155/2022/4262020.

Full text

Abstract:

The demand for virgin aggregates for concrete production worldwide has been increasing. At the same time, there is an increase in the production of rubbles from construction-related activities. The residues are produced either due to leftovers or from the demolished structures. However, worldwide, the utilization of recycled concrete aggregate (RCA) material for structural concrete has been limited, often considered inferior due to distorted surfaces. The problems with RCA arise because it is a composite aggregate made of natural aggregate and cement, and adhered surface mortar is the disconti

APA, Harvard, Vancouver, ISO, and other styles

21

Arshad, Hussain, and Yan Jun Qiu. "Evaluation of Asphalt Mixes Containing Reclaimed Asphalt Pavement." Applied Mechanics and Materials 178-181 (May 2012): 1522–25. http://dx.doi.org/10.4028/www.scientific.net/amm.178-181.1522.

Full text

Abstract:

The use of Reclaimed Asphalt Pavement (RAP) has been enormously increased from the last two decades. In fact using RAP in pavement construction has now become common practice in many countries. Using RAP not only economical and environmental friendly but also preserve the natural resources and similar or even better in structural performance than virgin asphalt mixtures. This paper presents an experimental study to evaluate the effect of various types and percentages of RAP on the properties of asphalt mixtures. Four mixtures, which were the combination of two different virgin aggregates and t

APA, Harvard, Vancouver, ISO, and other styles

22

Zhi, Xiao, Umar Faruk Aminu, Wenjun Hua, et al. "Modeling the Dynamic Behavior of Recycled Concrete Aggregate-Virgin Aggregates Blend Using Artificial Neural Network." Sustainability 15, no. 19 (2023): 14228. http://dx.doi.org/10.3390/su151914228.

Full text

Abstract:

Construction and demolition waste (CDW) aggregates have increased as a result of the rise in construction activities. Current research focuses on recycling of CDW to replace dwindling natural aggregates but pays little attention to permanent deformation behavior due to the anisotropic nature of the blended CDW aggregates. Accordingly, this study performs repeated load triaxial tests to evaluate the permanent deformation mechanism of the blended materials under various shear stress ratios and moisture conditions. An artificial neural network (ANN) deformation prediction model that accounts for

APA, Harvard, Vancouver, ISO, and other styles

23

Saravanakumar, P., D. Manoj, and S. Jagan. "Properties of concrete having treated recycled coarse aggregate and slag." Revista de la construcción 20, no. 2 (2021): 249–58. http://dx.doi.org/10.7764/rdlc.20.2.249.

Full text

Abstract:

The possibility of using substitute materials for aggregates and cement in concrete were studied and reported in this paper. Concrete mixtures with untreated recycled coarse aggregates (URCA) and treated recycled coarse aggregates (TRCA) were used to prepare two mix groups of without slag (Mix I) and with slag (Mix II). The recycled aggregates were treated with hydrochloric acid (HCl) having different molarities (0.1M, 0.3M and 0.5M) before used as a substitute material for virgin aggregate in concrete. The concrete mechanical, durability properties and morphology of concrete were examined thr

APA, Harvard, Vancouver, ISO, and other styles

24

Triantafyllou, Dimitrios, Ash Ahmed, and John Kamau. "Performance of Recycled Aggregate Concrete after Washing Treatment of Aggregates." European Journal of Engineering Research and Science 2, no. 9 (2017): 49. http://dx.doi.org/10.24018/ejers.2017.2.9.468.

Full text

Abstract:

Retrieval and reuse of crushed concrete aggregates (CCA) in the concrete industry is a common practice that has gained popularity due to environmental concerns that identify the saturation of landfill areas as a harmful and costly by-product of construction, and has therefore become a necessity for a sustainable, more well-coordinated effort towards improving concrete preparation. This research examines a natural method of CCA-washing that aims to effectively segregate contaminants from healthy material by allowing CCAs to sit outdoors for a period of time thus being subjected to several rain-

APA, Harvard, Vancouver, ISO, and other styles

25

Triantafyllou, Dimitrios, Ash Ahmed, and John Kamau. "Performance of Recycled Aggregate Concrete after Washing Treatment of Aggregates." European Journal of Engineering and Technology Research 2, no. 9 (2017): 49–53. http://dx.doi.org/10.24018/ejeng.2017.2.9.468.

Full text

Abstract:

Retrieval and reuse of crushed concrete aggregates (CCA) in the concrete industry is a common practice that has gained popularity due to environmental concerns that identify the saturation of landfill areas as a harmful and costly by-product of construction, and has therefore become a necessity for a sustainable, more well-coordinated effort towards improving concrete preparation. This research examines a natural method of CCA-washing that aims to effectively segregate contaminants from healthy material by allowing CCAs to sit outdoors for a period of time thus being subjected to several rain-

APA, Harvard, Vancouver, ISO, and other styles

26

Terro, Mohamad, Moetaz El-Hawary, Rana Al-Fares, and Mark Goldstein. "Utilization of Six Sigma in Quality Improvement of Recycled Aggregates Concrete." Journal of Waste Management 2013 (November 30, 2013): 1–10. http://dx.doi.org/10.1155/2013/394912.

Full text

Abstract:

The use of recycled demolished concrete in producing new concrete is an established method to improve sustainability through reducing the environmental impact of using virgin aggregates and through reducing construction waste. Six sigma is a set of tools and strategies for process improvement. In this paper, the six sigma DMAIC methodology is utilized to optimize the design parameters in order to improve and assure the quality of the resulting recycled aggregate concrete. The project aims to produce concrete with compressive strength of 25 MPa without using additives. Five parameters were used

APA, Harvard, Vancouver, ISO, and other styles

27

Doostdar, Mahsa, Janus zum Brock, Annachiara Ceraso, Ariana Carolina Morales Rapallo, and Kerstin Kuchta. "Comparative life cycle assessment of different recycled concrete aggregates." Detritus, no. 25 (December 31, 2023): 65–70. http://dx.doi.org/10.31025/2611-4135/2023.18324.

Full text

Abstract:

Concrete is recognized as the second most consumed materials in the whole world. Therefore, applying circular solutions to concrete, like recycling or reusing can guarantee a considerable benefits in terms of environmental impacts. In this paper, a comparative life cycle assessment is done for different recipes of recycled concrete aggregates in comparison to a recipe of virgin concrete aggregate, which are used in a case study called “Musterbude”. The recycling rate of aggregates used in the recipes are 45%, 60%, and 100% and they are supplied from different resources. For environmental impac

APA, Harvard, Vancouver, ISO, and other styles

28

Pernebekova, Gulnur, Alfrendo Satyanaga, Rezat Abishev, Sung-Woo Moon, and Jong Kim. "Water characteristic curve and permeability function of recycled concrete aggregate." E3S Web of Conferences 382 (2023): 12005. http://dx.doi.org/10.1051/e3sconf/202338212005.

Full text

Abstract:

Construction and demolition waste are one of the major waste streams in the world. Aggregates must be used in significant quantities during road construction and maintenance as base and sub-base materials. Government and local businesses are promoting the use of recycled material in old pavement andconstruction material due to the high cost of virgin aggregates. Concrete, road subgrade, and railroad ballast materials can all be made from recycled concrete aggregate (RCA), a type of recycled material. The engineers must properly comprehend the material's qualities, including its unsaturated pro

APA, Harvard, Vancouver, ISO, and other styles

29

Li, Ping, Ziran Wang, Bo Men, Xiaopeng Ma, Guoqi Tang, and Riran Wang. "Use of Multi-Scale Investigation to Evaluate Adhesion Performance of Warm-Mix Polymer-Modified Asphalt." Materials 16, no. 1 (2022): 287. http://dx.doi.org/10.3390/ma16010287.

Full text

Abstract:

Warm Mix Asphalt (WMA) technology can effectively reduce carbon emissions and energy consumption during road project construction. However, it may have a negative impact on the binding properties of asphalt mixtures. In order to effectively evaluate the adhesion performance of asphalt binders and aggregates under the combined influence of WMA and traditional polymer-modified asphalt, this paper provides a comprehensive evaluation at the micro and macro levels. The adhesion between three different modified asphalts (warm mix crumb rubber/ Styrene-Butadiene-Styrene (SBS) composite modified aspha

APA, Harvard, Vancouver, ISO, and other styles

30

Pourtahmasb, Mohammad Saeed, and Mohamed Rehan Karim. "Performance Evaluation of Stone Mastic Asphalt and Hot Mix Asphalt Mixtures Containing Recycled Concrete Aggregate." Advances in Materials Science and Engineering 2014 (2014): 1–12. http://dx.doi.org/10.1155/2014/863148.

Full text

Abstract:

Environmental and economic considerations have encouraged civil engineers to find ways to reuse recycled materials in new constructions. The current paper presents an experimental research on the possibility of utilizing recycled concrete aggregates (RCA) in stone mastic asphalt (SMA) and hot mix asphalt (HMA) mixtures. Three categories of RCA in various percentages were mixed with virgin granite aggregates to produce SMA and HMA specimens. The obtained results indicated that, regardless of the RCA particular sizes, the use of RCA to replace virgin aggregates increased the needed binder conten

APA, Harvard, Vancouver, ISO, and other styles

31

Grant, C. D., D. A. Angers, R. S. Murray, M. H. Chantigny, and U. Hasanah. "On the nature of soil aggregate coalescence in an irrigated swelling clay." Soil Research 39, no. 3 (2001): 565. http://dx.doi.org/10.1071/sr99073.

Full text

Abstract:

Aggregate coalescence in irrigated cracking clays constrains crop yields, yet little is known about it or how it can be managed. A measure of coalescence is introduced to separate the effects of natural aggregate-bed densification from those of age-hardening; this measure, χ, comprises a ratio of the net change in (tensile or penetrometer) strength, Y, that occurs in relation to the corresponding net change in dry bulk density, ρb, as follows: χ = ΔY/Δρb. A laboratory study was conducted to illustrate the variation in χ for a virgin and cultivated cracking clay exposed to 16 weekly cycles of w

APA, Harvard, Vancouver, ISO, and other styles

32

Albayati, Nadheer, and Mohammed Qadir Ismael. "The Feasibility of RCA Treatments Utilised in Asphalt Mixtures to Enhance their Properties and Performance: Narrative Review." Journal of Studies in Science and Engineering 4, no. 2 (2024): 228–44. https://doi.org/10.53898/josse2024432.

Full text

Abstract:

Recycled concrete aggregates (RCA) can be utilised instead of virgin aggregates to produce hot asphalt mixtures. This contributes to solving the difficulty of construction waste disposal and mitigates the supply-demand dilemma associated with implementing the sustainability strategy. Nevertheless, the presence of cement mortar in the recycled concrete aggregate leads to changes in its mechanical and physical characteristics, posing a major challenge. Therefore, researchers investigated methods to mitigate the harm caused by this cement mortar through various treatments. This paper offers a nar

APA, Harvard, Vancouver, ISO, and other styles

33

Jiménez, Luis F., José A. Domínguez, and Ricardo Enrique Vega-Azamar. "Carbon Footprint of Recycled Aggregate Concrete." Advances in Civil Engineering 2018 (May 30, 2018): 1–6. http://dx.doi.org/10.1155/2018/7949741.

Full text

Abstract:

Carbon footprint is one of the most widely used tools for assessing the environmental impacts of the production and utilization of concrete as well as of the components derived from it, representing the amount of carbon dioxide and other greenhouse gases associated with this product, expressed as CO2 equivalents. In this paper, carbon footprint was used to compare the environmental performance in the production phase of a concrete made with both recycled and crushed virgin limestone aggregates, using a life cycle analysis methodological approach. Research outcomes revealed, as expected, that c

APA, Harvard, Vancouver, ISO, and other styles

34

Phefadu, Kopano Conferance, and Lawrence Munjonji. "Assessing the Impact of No-Tillage Duration on Soil Aggregate Size Distribution, Stability and Aggregate Associated Organic Carbon." Agronomy 14, no. 11 (2024): 2482. http://dx.doi.org/10.3390/agronomy14112482.

Full text

Abstract:

Soil aggregation results from the rearrangement, flocculation and cementation of primary soil particles. Furthermore, the aggregates undergo transformation under no-tillage (NT) overtime. Soil organic carbon (OC) is the major component of soil organic matter and is protected within aggregates and can serve as a proxy for soil structural stability. Organic matter contributes significantly to the formation of soil aggregates and the carbon within them is protected against degradation. This study assessed the impact of tillage systems, soil depth and no-till duration on soil aggregate size distri

APA, Harvard, Vancouver, ISO, and other styles

35

Corinaldesi, Valeria, and Giacomo Moriconi. "Recycled Aggregate Concretes for Structural Applications: From Investigation to Design." Advanced Materials Research 548 (July 2012): 209–14. http://dx.doi.org/10.4028/www.scientific.net/amr.548.209.

Full text

Abstract:

In this paper an investigation of mechanical behaviour and, in particular, elastic properties of recycled aggregate concrete (RAC) is presented. RACs were prepared by using a coarse aggregate made of old concrete particles coming from a recycling plant in which rubble from demolition of reinforced concrete structures is collected and suitably treated. Several concrete mixtures were prepared by using either the only virgin aggregates (as reference) or 30% recycled concrete aggregates replacing gravel, and by using two different kinds of cement. Different water to cement ratios were adopted rang

APA, Harvard, Vancouver, ISO, and other styles

36

Osuolale, O.M., K.O. Amoo, O.Z. Anifowoshe, M.A. Adeyemi, and R.B. Ayinde. "Recycling of Reclaimed Asphaltic Concrete for Highway Construction." Journal of Advances in Civil Engineering and Management 4, no. 3 (2021): 1–15. https://doi.org/10.5281/zenodo.5792925.

Full text

Abstract:

The aim of the study was to investigate the potential reuse of reclaimed asphaltic concrete in highway pavement construction. The specific objectives were to determination of the percentages of various constituent materials of the reclaimed asphaltic concrete (RAC) to evaluation of the properties of the constituent materials from the reclaimed asphaltic concrete (RAC) to determination of the particle distribution of the mineral filler, fine, and coarse aggregates, to design of mix for the new asphaltic concrete, to production and evaluation of the new asphaltic concrete with various percentage

APA, Harvard, Vancouver, ISO, and other styles

37

Khaudiyal, S., M. A. Gour, N. Garg, S. K. Das, and S. Kumar. "Optimising partial replacement of coarse and fine aggregates with medical PP plastic and HIPS plastic waste to develop lightweight concrete." IOP Conference Series: Earth and Environmental Science 1086, no. 1 (2022): 012050. http://dx.doi.org/10.1088/1755-1315/1086/1/012050.

Full text

Abstract:

Abstract Climate change, land scarcity, overexploitation of natural resources, generation of vast amount of trash, and the difficulty to dispose off that trash in an effective and safe manner are just some of the issues that modern society is now dealing with. Inevitably, as the need for new construction rises, so does the demand for the materials needed to make new buildings. Incorporating waste components into the concrete will alleviate some of the pressure placed on the virgin building materials and will also contribute to the removal of a sizeable amount of garbage from the surface of the

APA, Harvard, Vancouver, ISO, and other styles

38

Lamas Chavez, Andre Jhoel, Alvaro Fabrizio Aliaga Guevara, and Pablo Jhoel Peña Torres. "Evaluation of the Mechanical Properties of Recycled Coarse Aggregate Concrete against the Action of Fire." Materials Science Forum 1123 (July 18, 2024): 29–38. http://dx.doi.org/10.4028/p-k0uuxp.

Full text

Abstract:

Growing concerns about sustainability and the search for greener alternatives in construction have led to a renewed interest in recycled concrete as a building material. Recycled concrete is produced using recycled aggregates, such as construction and demolition debris, instead of virgin aggregates, which reduces the demand for natural resources and the accumulation of waste. However, the viability of recycled concrete in high-temperature applications, such as fires or exposure to extremely high temperatures, has come under critical scrutiny. In this study we are going to talk about the differ

APA, Harvard, Vancouver, ISO, and other styles

39

Sharma, Navee, and Aditya Tiwari. "Use of Reclaimed Aggregates in Flexible Pavement." E3S Web of Conferences 596 (2024): 01023. http://dx.doi.org/10.1051/e3sconf/202459601023.

Full text

Abstract:

A strong road system is essential for a nation's economy to develop quickly since it connects outlying locations to the rest of the country for use in many types of transportation. Reclaimed asphalt pavement (RAP) is a suitable substitute for virgin material since it lessens the requirement for virgin material. In this investigation, sample of recovered asphalt pavement was gathered and examined to determine whether it would work well as flexible pavement. In this experimental study, bituminous concrete mixtures containing 10%, 20%, 30%, 40%, 50%, and 60% RAP material were the focus. These mix

APA, Harvard, Vancouver, ISO, and other styles

40

Rahman, Md Mizanur, Simon Beecham, Asif Iqbal, Md Rajibul Karim, and Abu Taher Zillur Rabbi. "Sustainability Assessment of Using Recycled Aggregates in Concrete Block Pavements." Sustainability 12, no. 10 (2020): 4313. http://dx.doi.org/10.3390/su12104313.

Full text

Abstract:

The mechanistic design of a concrete block pavement (CBP) can be very complicated and often requires the use of computer programs. This paper presents a new mechanistic-empirical method, which is implemented in a computer program (DesignPave) that calculates base course/sub-base thicknesses for a range of design inputs such as traffic load, interlocking properties, and material stiffness. A range of virgin and recycled unbound granular materials were also experimentally tested to characterize them for possible use as base course or sub-base materials. Combining the new mechanistic-empirical me

APA, Harvard, Vancouver, ISO, and other styles

41

Al-Azzawi, Zaid, and . "Utilizing Recycled Concrete and Stone Aggregate as Replace-ment for Natural and Crushed Virgin Aggregate." International Journal of Engineering & Technology 7, no. 4.37 (2018): 90. http://dx.doi.org/10.14419/ijet.v7i4.37.23623.

Full text

Abstract:

The mechanical properties of recycled concrete aggregate form Al-Anbar province in Iraq is presented in this paper. Recycled concrete and stone aggregates were utilized as replacements for both natural and crushed virgin aggregate. Four series of tests were conducted to study various replacement ratios (0.25, 0.50, 0.75 and 1.0) effect on compressive strength, splitting tensile strength and modulus of rupture. Density of concrete in addition to its water absorption were also investigated. Results of this work show that replacing natural and crushed virgin aggregate with waste concrete aggregat

APA, Harvard, Vancouver, ISO, and other styles

42

Llopis-Castelló, David, Carlos Alonso-Troyano, Pablo Álvarez-Troncoso, Aida Marzá-Beltrán, and Alfredo García. "Design of Sustainable Asphalt Mixtures for Bike Lanes Using RAP and Ceramic Waste as Substitutes for Natural Aggregates." Sustainability 14, no. 23 (2022): 15777. http://dx.doi.org/10.3390/su142315777.

Full text

Abstract:

The European Union is promoting a circular economy in which waste management plays an essential role. Although many studies focusing on the use of recycled materials in the manufacture of asphalt mixtures for roads have been developed, studies related to the use of recycled materials for the construction of bike lanes are scarce. In this context, the main objective of this research is to explore the behaviour of asphalt mixtures with high replacement rates of recycled materials—reclaimed asphalt pavement (RAP) and ceramic waste—by natural aggregates for the construction of bike lanes. A total

APA, Harvard, Vancouver, ISO, and other styles

43

Söderholm, Patrik. "Taxing virgin natural resources: Lessons from aggregates taxation in Europe." Resources, Conservation and Recycling 55, no. 11 (2011): 911–22. http://dx.doi.org/10.1016/j.resconrec.2011.05.011.

Full text

APA, Harvard, Vancouver, ISO, and other styles

44

Cordero, Joaquín G., Ramón García-Escudero, Jesús Avila, Ricardo Gargini, and Vega García-Escudero. "Benefit of Oleuropein Aglycone for Alzheimer’s Disease by Promoting Autophagy." Oxidative Medicine and Cellular Longevity 2018 (2018): 1–12. http://dx.doi.org/10.1155/2018/5010741.

Full text

Abstract:

Alzheimer’s disease is a proteinopathy characterized by accumulation of hyperphosphorylated Tau and β-amyloid. Autophagy is a physiological process by which aggregated proteins and damaged organelles are eliminated through lysosomal digestion. Autophagy deficiency has been demonstrated in Alzheimer’s patients impairing effective elimination of aggregates and damaged mitochondria, leading to their accumulation, increasing their toxicity and oxidative stress. In the present study, we demonstrated by microarray analysis the downregulation of fundamental autophagy and mitophagy pathways in Alzheim

APA, Harvard, Vancouver, ISO, and other styles

45

Wagner, Seth, Gabrielle Wickizer, Douglas Cleary, et al. "Use of Coarse Recycled Concrete Aggregate in Ternary Blended Portland Cement Concrete." Transportation Research Record: Journal of the Transportation Research Board 2674, no. 10 (2020): 705–14. http://dx.doi.org/10.1177/0361198120935876.

Full text

Abstract:

The purposes of this study were to (a) investigate concrete pavement mixtures with recycled concrete aggregates using ternary blended cementitious binders, (b) measure the fresh and hardened properties of the concrete mixtures, and (c) assess the durability of concrete implementing the use of recycled coarse aggregates with ternary binders. Mixtures had recycled concrete aggregates at varying replacement rates. The binders were combinations of Portland cement, Class C and F fly ashes, and ground granulated blast furnace slag. At 50% replacement of virgin aggregates, some specimens showed compa

APA, Harvard, Vancouver, ISO, and other styles

46

Aplin, J. D., and L. J. Foden. "Defective adhesion to extracellular matrix leads to altered social behaviour in cultured fibroblasts." Journal of Cell Science 76, no. 1 (1985): 199–211. http://dx.doi.org/10.1242/jcs.76.1.199.

Full text

Abstract:

We describe the properties of variant mouse fibroblasts selected for poor adhesion to growth substratum containing subcellular matrix accumulated by adherent cells at confluence. The variant cells adhere to virgin plastic and grow normally to confluence in the presence of serum. After subculture and reseeding onto the same surface the cells initially adhere, but after a further 2 days of growth they retract into aggregates and detach. If the aggregates are dispersed and cells reseeded onto the same surface they remain rounded. However, if the same cells are added back to virgin plastic they ad

APA, Harvard, Vancouver, ISO, and other styles

47

Banerji, Arijit Kumar, Pijush Topdar, and Aloke K. Datta. "Structural Performance of Cement-treated Base Layer by Incorporating Reclaimed Asphalt Material and Plastic Waste." Jordan Journal of Civil Engineering 17, no. 2 (2023): 259–71. http://dx.doi.org/10.14525/jjce.v17i2.08.

Full text

Abstract:

The reuse of reclaimed asphalt material (RAM) and polyethylene terephthalate (PET) plastic waste is a reliable approach to limit the use of virgin aggregates for road construction and mitigate environmental challenges. This study highlights the structural performance of the cementitious base or cement-treated base (CTB) layer by incorporating reclaimed asphalt and plastic waste material. Structural compatibility of CTB layer with different proportions of RAM (20%, 45%, 70% and 95%), virgin aggregates and plastic waste (5%) is recognized by the moisture-density relationship, unconfined compress

APA, Harvard, Vancouver, ISO, and other styles

48

Tenzin, Rigden Yoezer, Leki Drakpa, Tashi Deki, et al. "RECYCLED AGGREGATE CONCRETE (RAC): A viable solution for sustainable construction." Journal of Applied Engineering, Technology and Management 3, no. 1 (2023): 63–69. http://dx.doi.org/10.54417/jaetm.v3i1.111.

Full text

Abstract:

Construction activities are booming in and around the cities with development and modernization. As a result of these constructions, natural aggregates are being extracted. Simultaneously, there is a significant amount of construction and demolition waste (CDW) generated due to the demolition of structures either due to the structure attaining service life or fashion and the ongoing trend of reconstruction. Therefore, recycling coarse aggregate from CDW in concrete is one of the sustainable solutions to prevent a serious threat to the environment due to the extraction of virgin aggregates and

APA, Harvard, Vancouver, ISO, and other styles

49

Grigorjev, Vadim, Miguel Azenha, and Nele De Belie. "Second Life for Recycled Concrete and Other Construction and Demolition Waste in Mortars for Masonry: Full Scope of Material Properties, Performance, and Environmental Aspects." Materials 17, no. 20 (2024): 5118. http://dx.doi.org/10.3390/ma17205118.

Full text

Abstract:

This review presents the scope of current efforts to utilize recycled construction and demolition waste in mortars for masonry. More than 100 articles are divided into groups pertaining to the type of mortar, different binder systems, the type of construction and demolition waste (CDW), and its utilization specifics. Cement-based mortars dominate this research domain, whereas recycled concrete is the main material employed to replace virgin aggregates, followed by recycled masonry and recycled mixed waste aggregates. Such application in cement-based mortars could increase water demand by 20–34

APA, Harvard, Vancouver, ISO, and other styles

50

Tzibulsky, Mark, and Vladimir Frid. "Effect of Gravel Size, Microwave Irradiation (1 to 2.5 min), Moisture, and Quenching on Aggregate Properties of Chert Gravel: Valorizing a “Waste” Byproduct of Sand Quarrying." Clean Technologies 7, no. 2 (2025): 29. https://doi.org/10.3390/cleantechnol7020029.

Full text

Abstract:

Chert gravel, a byproduct of sand quarrying, remains an underutilized material in construction due to its low microwave (MW) absorption and high mechanical strength. The present study deals with the potential of MW irradiation as a novel, energy-efficient method for processing chert gravel into high-quality aggregates, reducing reliance on virgin materials. The research systematically examines MW exposure duration (1–2.5 min), rock size (150–800 g), moisture conditions, and cooling methods (air vs. water quenching) to optimize fragmentation. Experimental results indicate that larger rock sizes

APA, Harvard, Vancouver, ISO, and other styles

We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!