Results 41 to 50 of about 888,293 (179)

Investigation of Fragmentation and Abrasion Resistance of Basalt and Limestone Aggregates in Bitlis Region and the Relationship between MgSO4 and Flatness Index Values

Firat University Journal of Experimental and Computational Engineering
The mechanical characteristics of aggregates have a direct impact on the performance of asphalt mixtures. The aggregates used in road construction must possess certain essential qualities; they should be clean, hard, durable, resistant to abrasion, of ...
Alev Akıllı El
doaj   +1 more source

Investigation of evaluation indicators of agglomeration degree of recycled asphalt pavement materials

Frontiers in Materials
High-content reclaimed asphalt pavement (RAP) utilization is becoming a promising direction to achieve sustainable pavement maintenance. However, the agglomerate degree of RAP materials is hard to be accurately quantified.
Zhixin Lu, Fucheng Guo, Peilin Liu, Peilin Liu   +3 more
doaj   +1 more source

The Public's Expectations of Development Policy: Findings of the DEval Opinion Monitor for Development Policy 2021 [PDF]

, 2021
This policy brief summarises the findings of the DEval Opinion Monitor for Development Policy 2021. It investigated which partner countries the general public perceives as particularly worthy of support and what socioeconomic and political ...
Sassenhagen, Nora, Bruder, Martin, Eger, Jens, Schneider, Sebastian H.   +3 more
core  

From Practitioner to Scholar: A Collaborative Autoethnography of PhD Students' Research on Evaluation Journeys

New Directions for Evaluation, Volume 2025, Issue 187, Page 67-82, Fall 2025.
ABSTRACT There has been limited attention to the role of research on evaluation (RoE) in PhD‐level evaluator education. Previous research suggests that evaluator education doctoral programs have multiple purposes to prepare practitioners and researchers, thus creating an unnamed tension where evaluation practice is the focus and RoE has not been ...
Amanda Sutter, Allison Prieur, Valerie Marshall, Rachael R. Kenney, Kari Ross Nelson, Christine Abagat Liboon   +5 more
wiley   +1 more source

Nachhaltiger Konsum angesichts globaler Herausforderungen: Chancen und Hindernisse; Ergebnisse des DEval-Meinungsmonitors Entwicklungspolitik 2022 [PDF]

, 2023
Nachhaltiger Konsum leistet einen Beitrag zu einer nachhaltigen globalen Entwicklung. Aufgrund der Wechselwirkungen zwischen Konsumverhalten in Industriestaaten und menschlichen Lebensbedingungen in Ländern des globalen Südens hat das Thema auch eine ...
Sassenhagen, Nora, Zille, Helge, Bruder, Martin, Schneider, Sebastian H.   +3 more
core  

Laboratory-to-field geotechnical suitability assessment of granular lateritic materials-crushed rock aggregate mixture for tropical pavements

Discover Civil Engineering
Granular lateritic materials (GLM), widely used in tropical regions for their availability and low cost, often exhibit high variability and inadequate bearing capacity to satisfy pavement design requirements.
Arnaud Ngo’o Ze, Jean Francis Lobe Bille, Hervé Nyassa Ohandja, Hermann Dimitri NgeuadjeuNgandou, Benjamin Atanne, Aloys Thierry Ndzié Mvindi, Vincent Laurent Onana   +6 more
doaj   +1 more source

Wear of sharp aggregates in a rotating drum

EPJ Web of Conferences, 2017
Aggregates constituting ballast layer wear due to the continuous passage of trains and during the necessary maintenance operations of the track. In order to develop efficient solutions for ballasted tracks design and maintenance, a proper knowledge of ...
Deiros Quintanilla Ivan, Combe Gaël, Emeriault Fabrice, Toni Jean-Benoît, Voivret Charles, Ferellec Jean François   +5 more
doaj   +1 more source

Physico‐Mechanical, Mineralogy, and Microstructural Properties and Durability of Mortars Made With Alluvial Sands

Advances in Civil Engineering, Volume 2025, Issue 1, 2025.
Concrete structures built from local materials are prolific, and mastery of their intrinsic properties is a guarantee of rational use. This study, based on an experimental approach, analyzes the construction potential of three alluvial sands (Mandikoum [MA], Ndom [ND], and Vack [VA]) used in Adamawa.
Seunkole Bila Lamou Cyrille, Manjia Marcelline Blanche, Tchapga Gniamsi Guy Molay, Mambou Ngueyep Luc Leroy, Mache Jacques Richard, Tiegoum Wembe Japhet, Mazié Gilbert, Tchinzie Emmanuel, Arnab Biswas   +8 more
wiley   +1 more source

Germany’s contribution to the forest and climate protection programme REDD+ [PDF]

, 2020
Deforestation and forest degradation are major contributors to climate change. The international REDD+ framework aims to mitigate climate change by rewarding developing countries for conserving and sustainably managing their forests and for enhancing ...
Michaelowa, Axel; https://orcid.org/, Weber, Anne-Kathrin; https://orcid.org/, Schnepf, Simone, Christensen, Johanna, Reineke, Sabine   +4 more
core   +1 more source

Mix and measure II: joint high‐energy laboratory powder diffraction and microtomography for cement hydration studies

Journal of Applied Crystallography, Volume 57, Issue 4, Page 1067-1084, August 2024.
Laboratory powder diffraction and microtomography techniques are sequentially used in the same volume of the same sample to study the process of cement hydration with time.Portland cements (PCs) and cement blends are multiphase materials of different fineness, and quantitatively analysing their hydration pathways is very challenging.
Jaime Fernandez-Sanchez, Ana Cuesta, Shiva Shirani, Cinthya Redondo-Soto, Angeles G. De la Torre, Isabel Santacruz, Ines R. Salcedo, Laura Leon-Reina, Miguel A. G. Aranda   +8 more
wiley   +1 more source