Results 101 to 110 of about 95,262 (313)

Lightweight concrete containing recycled aggregates

open access: yesMagazine of Civil Engineering
This study investigated the replacement of fine concrete aggregates with recycled aggregate. The results showed that the effect of recycled aggregate, so that, replacing 25, 50, 75 and 100 % of natural aggregate led to an 8, 23, 15 and 11 %, respectively,
Ahmed Anees Ahmed
doaj   +1 more source

Shear strength of reinforced recycled aggregate concrete beams without shear reinforcements

open access: yesJournal of Civil Engineering and Management, 2017
As the demand for sustainable construction materials has risen over recent years, researchers have conducted several studies to expand the practical application of recycled construction materials, such as recycled aggregate.
Won-Chang Choi, Hyun-Do Yun
doaj   +1 more source

Kesediaan bakal guru DPLI terhadap kursus elektromekanikal untuk mengajar di sekolah menengah: kajian di UTHM [PDF]

open access: yes, 2013
Perkembangan pendidikan begitu pesat, mencabar dan canggih, memerlukan perhatian serius dalam kalangan guru. Maka tugas sebagai bakal guru di Malaysia kini kian mencabar. Oleh yang demikian kajian ini dijalankan khusus untuk mengenal pasti kesediaan
Nordin, Norhuzayanti
core  

Dual‐Mode Film Based on Highly Scattering Nanofibers and Upcycled Chips‐Bags for Year‐Round Thermal Management

open access: yesAdvanced Functional Materials, EarlyView.
Intelligent radiative cooling devices, adaptable to various weather conditions, have the potential for year‐round energy savings. This study introduces a sustainable dual‐mode film made from polycaprolactone nanofibers and upcycled chip bags for effective thermal management.
Qimeng Song   +4 more
wiley   +1 more source

Uniaxial Compression Performance of Recycled Brick Aggregate Concrete with Basalt Fibers and its Bonding Performance with Steel Bars

open access: yesMedžiagotyra
This paper systematically analyzes the basic mechanical properties, uniaxial compression performance, and bonding performance of recycled brick aggregate concrete treated with basalt fibers with steel bars.
Shu SUN   +3 more
doaj   +1 more source

Effects of Recycled Aggregate on Concrete Mix and Exposure to Chloride

open access: yesAdvances in Materials Science and Engineering, 2019
Construction and demolition waste has dramatically increased in the last decade, and most of it goes into landfills, increasing the burden on landfill loading and operations.
Ammar Ben Nakhi, Jasem M. Alhumoud
doaj   +1 more source

Fine recycled concrete aggregate as a material replacement in concrete production [PDF]

open access: yes, 2020
As a fast and rapid growing nation, Malaysia undergoes a lot of development especially in construction field. Most of the building nowadays are being made mainly using concrete as it provides many favorable features such as satisfactory compressive ...
Shahidan, Shahiron   +2 more
core  

Life cycle assessment of completely recyclable concrete [PDF]

open access: yes, 2014
Since the construction sector uses 50% of the Earth. s raw materials and produces 50% of its waste, the development of more durable and sustainable building materials is crucial.
De Belie, Nele   +3 more
core   +3 more sources

MnI‐Functionalized Covalent Organic Framework as Efficient Electrocatalyst for CO2 Reduction in a Catholyte‐Free Zero‐Gap Electrolyzer

open access: yesAdvanced Functional Materials, EarlyView.
This work demonstrates the successful integration of a phenanthroline‐based 2D COF with MnI catalytic sites into a catholyte‐free membrane‐electrode‐assembly cell for CO2 electroreduction. The crystalline COF actively suppresses Mn⁰–Mn⁰ dimerization, achieving a turnover frequency of 617 h⁻¹ at 2.8 V (full‐cell potential), and enabling stable operation.
Laura Spies   +8 more
wiley   +1 more source

Experimental Study on a Prediction Model of the Shrinkage and Creep of Recycled Aggregate Concrete

open access: yesApplied Sciences, 2019
The significant difference between recycled aggregate and natural aggregate is the content of the attached mortar layer. With the increase of the replacement rate of recycled aggregate, the shrinkage and creep of recycled aggregate concrete is ...
Zhenyuan Lv   +4 more
doaj   +1 more source

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