Results 1 to 10 of about 38 (36)

Microstructure characterization of sustainable light weight concrete using trapped air additions.

open access: yesFracture and Structural Integrity, 2022
Light-weight aggregate and trapped air additions (TAD) affect concrete performance and lead to the production of light-weight concrete (LWC). In this research, fourteen mixes were designed to study the effects of TAD type and content and pozzolanic ...
Said Maaty, Ahmed Elshami, Fryal Kamel
doaj   +5 more sources

Efficiency of natural pozzolan and natural perlite in controlling the alkali-silica reaction of cementitious materials

open access: yesCase Studies in Construction Materials, 2022
Pozzolanic materials have generally been found to be useful in reducing the effects of alkali-silica reaction (ASR) in cementitious composites by reacting with hydroxyl ions and portlandite to produce new phases that trap alkali ions.
Ramdane Chihaoui   +5 more
doaj   +1 more source

Service life of reinforced concrete structures made with blended cements and exposed in urban environment

open access: yesStructural Concrete, Volume 23, Issue 2, Page 694-705, April 2022., 2022
Abstract Carbonation‐induced corrosion is one of the main causes of degradation of reinforced concrete (RC) structures exposed outdoor in urban environment. To prevent steel corrosion, a durability design, that considers both the initiation and the propagation time, is of fundamental importance.
Federica Lollini, Elena Redaelli
wiley   +1 more source

Alkali‐Active Sand Slate Powder for Use as Mineral Admixture in Mass Hydraulic Concrete: Technical and Economic Analysis

open access: yesAdvances in Materials Science and Engineering, Volume 2021, Issue 1, 2021., 2021
This work has launched a comprehensive investigation on the macro performance and micro structure of mass concrete produced with alkali‐active sand slate powder (ASSP) for use as the mineral admixture and a thorough analysis on its technical and economic effects is also conducted. Results indicated ternary blend with hybrid of 5–8 wt.% silica fume (SF)
Xia Chen   +4 more
wiley   +1 more source

The Combined Effect of the Initial Cure and the Type of Cement on the Natural Carbonation, the Portlandite Content, and Nonevaporable Water in Blended Cement

open access: yesAdvances in Materials Science and Engineering, Volume 2017, Issue 1, 2017., 2017
The aim of this work is to better understand the physical and chemical phenomena involved in hydrated mix (clinker + addition) during the natural carbonation process, to characterize cement with supplementary cementitious materials (SCMs) under various curing environment. The prepared cement pastes were characterized by thermogravimetric analysis.
Saida Boualleg   +5 more
wiley   +1 more source

Wet‐Treated MSWI Fly Ash Used as Supplementary Cementitious Material

open access: yesAdvances in Materials Science and Engineering, Volume 2015, Issue 1, 2015., 2015
Municipal solid waste incineration (MSWI) is a common technique in treatment of domestic waste. This technique annually produces approximately 25 Mt solid residues (i.e., bottom and fly ash) worldwide which is also a major issue in current research. In this research we are concerned with reusing the fly ash (FA) as supplementary cementitious material ...
Martin Keppert   +4 more
wiley   +1 more source

Marble Filler: Does It Retard the Dissolution of Cement Constituents?

open access: yesInternational Scholarly Research Notices, Volume 2011, Issue 1, 2011., 2011
We showed In previous studies, that partial substitution of Portland cement with fillers from industrial by‐products, slag and marble, have enabled the development of new hydraulic cements (ternary or quaternary) with a good mechanical performance, in addition to their economic and ecological benefits.
Ibrahim Messaoudene   +3 more
wiley   +1 more source

Microscopic and elemental characterization of hydrated dental pulp capping agents. [PDF]

open access: yesJ Conserv Dent, 2021
Anthrayose P   +4 more
europepmc   +1 more source

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