Results 31 to 40 of about 18,605 (255)
Zeolita, estudio de aptitud como una puzolana natural aplicada a hormigón estructural [PDF]
, 2015 Nowadays, concrete is one of the most widely used construction materials due to its low price, appropriate mechanic characteristics and durability. Also, due to its ease to adopt diverse forms and sizes (Najimi et al., 2012).
Locati, Francisco +4 more
core +2 more sources
Media 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]
Journal 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
Journal 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]
, 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
Teras 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
Cements based on kaolinite waste [PDF]
, 2018 The cement industry involves high-energy consumption that generates high CO2 emissions into the atmosphere. Environmental concerns can be addressed by replacing parts of Portland cement clinkers with pozzolanic materials in mortars and concrete.
Fernández Carrasco, Lucía +5 more
core +8 more sources
Compressive Strength of Volcanic Ash/Ordinary Portland Cement Laterized Concrete [PDF]
, 2010 This study investigates the effect of partial replacement of cement with volcanic ash (VA) on the compressive strength of laterized concrete. A total of 192 cubes of 150mm dimensions were cast and cured in water for 7, 14, 21, and 28 days of hydration ...
Olawuyi, B. J, Olusola, K. O
core +2 more sources
Effect of Chemical Additives on Carbon Dioxide in the Sustainable Production of Portland Pozzolanic Cement [PDF]
محیط زیست و مهندسی آبThis 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
CLEI 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