Results 41 to 50 of about 4,574,504 (206)

DURABILITY BEHAVIOR OF BANANA FIBER-REINFORCED NATURAL POZZOLAN GEOPOLYMER

open access: yesJournal of Green Building, 2023
ABSTRACT This research investigates the durability of waste banana fiber (BF) reinforced Earth of Datça (ED)-based geopolymer (EDBG) mortar under consecutive cycles of freeze-thaw, wetting-drying, and sulfate attack tests. ED is the volcanic tuff of the Datça Peninsula in Türkiye and was utilized as an aluminosilicate source, while sodium ...
Ekiz Barış, Kübra, Tanaçan, Leyla
openaire   +3 more sources

Study of effects of natural pozzolan on properties of cement mortars

open access: yes, 2006
Natural pozzolans, also known as trass, can be used in cement manufacturing due to their cementitious properties after reaction with calcium hydroxide. At different mixture proportions, the strength, setting time, workability, and soundness of the cement
Yetgin, Suekrue, Cavdar, Ahmet
core   +1 more source

The Influence of Water Content on the Fresh and Hardened State Properties of Lime–Pozzolan Grouts

open access: yesHeritage, 2022
Lime–pozzolan grouts concern a specific type often applied in the restoration of historic structures. Their water content, a crucial factor of their applicability, has a significant impact on their fresh and hardened state properties. In this study, four
Vasiliki Pachta
doaj   +1 more source

The effect of natural pozzolan on delayed ettringite formation of the heat-cured mortars

open access: yes, 2013
International audienceDelayed Ettringite Formation (DEF) is an internal sulfate attack caused by early age heating to a temperature of over 70 degrees C.
Nguyen, van Huong   +3 more
core   +1 more source

Engineered soil and the need for lime-natural pozzolan mixture percentage approximation [PDF]

open access: yes, 2020
The topic, engineered soil and the need for lime-natural pozzolan mixture percentage approximation is tried to be realized with the basic objective of initiating the identification of the percentage range for lime-natural pozzolan amender mixture ...
Admassu , Kassahun
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

Optimising the Workability and Strength of Concrete Modified with Anacardium Occidentale Nutshell Ash

open access: yesFibers, 2021
Strength failure persists both in structural and mechanical analysis. One of its prominent characteristics is the adequate provision for parameters that minimise or maximise strength objectives while satisfying boundary conditions.
Solomon Oyebisi   +5 more
doaj   +1 more source

High temperature fracture behavior and damage evolution of recycled aggregate concrete produced from metakaolin modified parent concrete

open access: yesStructural Concrete, EarlyView.
Abstract The increasing use of recycled aggregate concrete (RAC) offers significant environmental benefits by reducing construction and demolition waste; however, its fracture performance and damage evolution under elevated temperatures remain insufficiently understood, particularly when recycled aggregates are derived from metakaolin modified parent ...
Zubair Yousuf, Viktor Hlavička
wiley   +1 more source

Evolution of the hydration in cements with additions

open access: yesMateriales de Construccion, 2002
In this paper, the hydration mechanism of portland cement pastes with limestone, quartz and natural pozzolan (80/20 weight) was analized. The techniques used were nonevaporable water content, pozzolanic activity and X-ray diffraction.
V. L. Bonavetti   +2 more
doaj   +1 more source

Performance of structurally viable green concrete derived from natural Pozzolan and Nanosilica

open access: yesMagazine of Civil Engineering, 2021
The effect of admixing nanosilica on the fresh and hardened properties of natural pozzolan (NP) based alkali activated concrete (AAC) was examined. The workability, setting times, engineering properties, durability characteristics and pore structure of ...
Ibrahim Mohammed   +4 more
doaj   +1 more source

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