Results 21 to 30 of about 13,771 (226)

Strength performance and life cycle assessment of high-volume low-grade kaolin clay pozzolan concrete: A Ghanaian scenario

open access: yesCase Studies in Construction Materials, 2022
Concrete, the highest consumed construction material in the world is known to be the third leading contributor to carbon dioxide and other greenhouse gas emissions (GHG) aside from energy generation and transportation.
Mark Bediako, Luca Valentini
doaj   +1 more source

STUDI PENGGUNAAN PASIR DAN POZZOLAN ALAM TERHADAP DAYA TAHAN API PAPERCRETE

open access: yesTeras Jurnal: Jurnal Teknik Sipil, 2016
Penelitian ini bertujuan untuk mengetahui pengaruh komposisi pozzolan alam terhadap daya tahan api beton kertas (papercrete). Penelitian terdahulu terhadap campuran papercrete komposisi volume semen dan pasir 1 : 3,5 menunjukkan bahwa penggunaan variasi ...
Surya Bermansyah   +3 more
doaj   +1 more source

An investigation of the beneficial effects of adding carbon nanotubes to standard injection grout [PDF]

open access: yes, 2018
Mortar grouting is often used in masonry constructions to mitigate structural decay and repair damage by filling cracks and voids, resulting in an improvement in mechanical properties.
Ferro GA   +4 more
core   +1 more source

Pemanfaatan Fly Ash Limbah Pembakaran Batubara sebagai Zat Mineral Tambahan (Additive) terhadap Perbaikan Kualitas dan Kuat Tekan Semen

open access: yesMedia Komunikasi Teknik Sipil, 2021
Serangkaian pengujian dilakukan untuk menentukan pengaruh penambahan fly ash limbah pembakaran batubara sebagai zat mineral tambahan (additive) terhadap perbaikan kualitas dan kuat tekan semen sesuai Standar Nasional Indonesia (SNI 15-2049-2004).
Roni Adi Wijaya   +2 more
doaj   +1 more source

A review on some of mechanical properties and durability of high- performance self- compacting concretes [PDF]

open access: yesJournal of Structural and Construction Engineering, 2020
Concrete density is always a problem that occurs during concrete and it affects the strength, durability and apparent qualities of hardened concrete. Vibration is a practical thing that comes with a lot of noise and requires trained workers, and failure ...
Fathollah Sajedi, Milad Orak
doaj   +1 more source

Influence of thermal activation of natural pozzolan on the mechanical behavior of cement pastes

open access: yesJournal of Materials and Engineering Structures, 2022
This experimental work focused on the thermal activation of natural pozzolan (NP) from the town of Beni-Saf, in order to improveits reactivity. The present study consists of using natural pozzolan as partial replacement of ordinary Portland cement, with ...
souad MECHEBEK   +2 more
doaj  

Potential of Orange Peel Ash as a Cement Replacement Material [PDF]

open access: yes, 2019
The potential of Orange peel ash (OPA) as a cement replacement material was investigated with focus on the effect of OPA content on the physicomechnical properties such as consistency, setting times, soundness, compressive and flexural strengths of OPA ...
Abdullahi, Basiru   +2 more
core   +2 more sources

PENGARUH SUBSTITUSI PASIR POZZOLAN SEBAGAI AGREGAT HALUS TERHADAP KUAT TEKAN BETON PASCA BAKAR DENGAN DAN TANPA PERENDAMAN

open access: yesTeras Jurnal: Jurnal Teknik Sipil, 2019
Salah satu kegagalan pada konstruksi beton adalah saat terjadi kebakaran pada konstruksi tersebut, hal ini mempengaruhi kualitas/kekuatan struktur beton. Beton mutu tinggi merupakan beton dengan kuat tekan lebih besar dari 41,4 Mpa.
syarifah asria nanda   +2 more
doaj   +1 more source

Effect of Chemical Additives on Carbon Dioxide in the Sustainable Production of Portland Pozzolanic Cement [PDF]

open access: yesمحیط زیست و مهندسی آب
This research aims to investigate the reduction of CO2 emissions in the cement production process by producing pozzolanic portland cement (PPC) with the characteristics of ordinary portland cement (OPC) using quality-improving chemical additives ...
Aliakbar Derakhshani   +2 more
doaj   +1 more source

Multi-objective optimization of a steady-state rotary dryer

open access: yesCLEI Electronic Journal, 2021
The multi-objective optimization of a direct current rotary dryer that operates with pozzolan in a Paraguayan company is detailed in this article. Three objective functions in steady state are minimized using a NSGA-II algorithm, these are: (1) moisture ...
César Oviedo   +2 more
doaj   +1 more source

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