Results 21 to 30 of about 20,445 (250)

Characteristics of Wood Ash Cement Mortar Incorporating Green-Synthesized Nano-TiO2

open access: yesInternational Journal of Concrete Structures and Materials, 2021
This paper presents the findings of an investigation into the influence of green-synthesized nano-TiO2 on the characteristics of wood ash (WA) cement mortar.
Bolanle Deborah Ikotun   +1 more
doaj   +1 more source

Synchrotron Microtomography and Neutron Radiography Characterization of the Microstruture and Water Absorption of Concrete from Pompeii [PDF]

open access: yesCement and Concrete Research 139 (2021) 106282, 2020
There is renewed interest in using advanced techniques to characterize ancient Roman concrete. In the present work, samples were drilled from the "Hospitium" in Pompeii and were analyzed by synchrotron microtomography (uCT) and neutron radiography to study how the microstructure, including the presence of induced cracks, affects their water adsorption.
arxiv   +1 more source

USES OF DRY VINASSE AS A FRIENDLY ENVIRONMENTAL MATERIAL TO IMPROVE PROPERTIES OF CEMENT MORTAR AND CONCRETE [PDF]

open access: yesJES: Journal of Engineering Sciences, 2020
This study aims at using the sugar by-product (dry vinasse), as one of the concrete production requirements, instead of getting rid of them in vain. Dry vinasse was obtained by drying liquid vinasse at 250 ° C.
A. Megahed Ahmed   +2 more
doaj   +1 more source

Experimental and Numerical Investigation of the Fracture Behavior of Particle Reinforced Alkali Activated Slag Mortars [PDF]

open access: yesJournal of Materials in Civil Engineering, 2019, 2019
This paper presents fracture response of alkali-activated slag (AAS) mortars with up to 30% (by volume) of slag being replaced by waste iron powder which contains a significant fraction of elongated particles. The elongated iron particles act as micro-reinforcement and improve the crack resistance of AAS mortars by increasing the area of fracture ...
arxiv   +1 more source

Experimental Assessment of Using Micro-Non Air Bubble (MINAB) and Super-Plasticizer on Setting Time and Compressive Strength of Cement Mortar [PDF]

open access: yesJournal of Structural and Construction Engineering, 2021
One of the latest innovations in nano-technology is the use of Micro-Nano Air Bubbles (MINAB) as a substitute for water in concrete. Using MINAB as a substitute for water used in concrete can be used to improve the properties of concrete.
Jalil Shafaei   +2 more
doaj   +1 more source

Inhibition of Cracks on the Surface of Cement Mortar Using Estabragh Fibers

open access: yesAdvances in Materials Science and Engineering, 2013
The influence of adding Estabragh fibers into the cement composites of mortar on surface cracks and mechanical properties of mortar has been studied at various fiber proportions of 0.25%, 0.5%, and 0.75%.
Tahereh Soleimani   +3 more
doaj   +1 more source

Scalable computational kernels for mortar finite element methods [PDF]

open access: yes, 2022
Targeting simulations on parallel hardware architectures, this paper presents computational kernels for efficient computations in mortar finite element methods. Mortar methods enable a variationally consistent imposition of coupling conditions at high accuracy, but come with considerable numerical effort and cost for the evaluation of the mortar ...
arxiv   +1 more source

Hierarchical meta-modelling of stone injected with CNT/cement mortar [PDF]

open access: yesarXiv, 2023
This paper presents an innovative hierarchical meta-modelling approach for predicting the effective elastic properties of stone injected with composite cement grouts containing Carbon NanoTubes (CNTs) for structural rehabilitation purposes. The study first addresses the homogenization of the nano- and micro-scales through numerical representative ...
arxiv  

Comparison Study of Dynamic Elastic Moduli of Cement Mortar and No-cement Slag Based Cementitious Mortar Activated with Calcined Dolomite with Impulse Excitation Technique

open access: yesMATEC Web of Conferences, 2018
This paper presents the comparison of an experimental investigation on compressive strength and dynamic elastic moduli of mortars made of Ordinary Portland Cement (OPC) and ground granulated blast furnace slag (GGBFS) incorporating with calcined dolomite.
Djayaprabha Herry Suryadi   +2 more
doaj   +1 more source

The research progress and Hotspot analysis of polymer cement mortar based on bibliometrics

open access: yesFrontiers in Materials
Ordinary cement mortar is commonly used in building engineering due to its high strength, affordability, and easy access to raw materials. However, it suffers from high shrinkage and poor impermeability, which result in reduced building service life and ...
Peng Wang, Fei Wang, Mingquan Ma
doaj   +1 more source

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