Results 81 to 90 of about 4,199 (222)

Alkali-Activated Natural Pozzolan/Slag Binder for Sustainable Concrete

open access: yes, 2016
This study aimed to fully replace Portland cement (PC) with environmentally friendly binders capable of improving longevity of concrete. The new binders consisted of different proportions of natural Pozzolan and slag which were alkaline-activated with ...
Najimi, Meysam
core   +1 more source

Studies on the behaviour of different spent fluidized-bed catalytic cracking catalysts on Portland cement

open access: yesMateriales de Construccion, 2009
The fluidized-bed catalytic cracking catalyst (FCC) it is a residue from the industry of the petroleum that shows a high pozzolanic reactivity and, in cementing matrix, it significantly improves their mechanical behaviour as well as durability.
J. Payá   +3 more
doaj   +1 more source

Strength, Sulfate Resistance, and Microstructural Characteristics of Concrete With Partial Cement Replacement Using Eggshell Powder and Wheat Straw Ash

open access: yesAdvances in Materials Science and Engineering, Volume 2026, Issue 1, 2026.
This study explores the partial replacement of ordinary Portland cement (OPC) with a composite of eggshell powder (ESP) and wheat straw ash (WSA) in C‐25 concrete, focusing on mechanical performance and durability. Cement was replaced with varying proportions of ESP and WSA, and the concrete mix was prepared following ACI guidelines.
Abdulsemad Jemal Jema   +2 more
wiley   +1 more source

Investigation of pozzolanic activity of volcanic rocks from the northeast of the Black Sea

open access: yesScience and Engineering of Composite Materials, 2016
Mineralogical and chemical properties, as well as the pozzolanic activities, of the volcanic rocks in the northeast of the Black Sea were examined. Physical and mechanical tests were conducted on samples collected from the study area and the feasibility ...
Çullu Mustafa   +3 more
doaj   +1 more source

Pozzolanic Reaction of a Biomass Waste as Mineral Addition to Cement Based Materials: Studies by Nuclear Magnetic Resonance (NMR)

open access: yesInternational Journal of Concrete Structures and Materials, 2019
Non-fossil alternative fuels from biomass (agro-industrial, forestry and fodder plants) focus on getting cleaner, cheaper and more environmentally friendly energy sources directly related to the sustainable development of future societies.
Sagrario Martínez-Ramírez   +3 more
doaj   +1 more source

Properties of natural pozzolan and its potential utilization in environmental friendly concrete

open access: yes, 2011
In Saudi Arabia, locally available natural pozzolanic material has the potential for use in environmental friendly concrete as a partial cement replacement.
Khan, Alhozaimy, A.M. M.I.,
core   +2 more sources

DURABILITY OF NATURAL POZZOLAN-BASED MORTAR EXPOSED TO SULFATE ATTACK

open access: yes, 2016
Cement is a strategic commodity in the civil engineering for the construction of reinforced concrete structures. But its production generates around 5% of toxic gases such as CO2 responsible for environmental degradation.
Laoufi, L   +11 more
core   +1 more source

Composite cements containing natural pozzolan and granulated blast furnace slag

open access: yesMateriales de Construccion, 2006
For reasons of market demand and Portland cement production,the manufacture of cements with two or more separately ground additions to produce customized cements is becoming common practice.
V. L. Bonavetti   +4 more
doaj   +1 more source

Experimental Research on Natural Pozzolan as Cement Replacement

open access: yes, 2018
This paper presents the properties of motor and concrete with natural pozzolan as partial replacement of cement. In this research, natural pozzolan from Twin Taung, Sagaing Region and local cement (Crown) are used.
Aye, Dr. Nilar, Ko, Tin Ni Ni
core  

The initial reactions of lime-pozzolan pastes for conservation of masonry [PDF]

open access: yes, 2019
Throughout the lifetime of historic buildings the masonry will often undergo at least one conservation intervention. The need for conservation arises from the different elements of the building and to this end mortars have a very important role to play ...
Ball, Richard   +2 more
core   +1 more source

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