Results 21 to 30 of about 8,572 (229)

Compressive strength variation of alkali activated fly ash/slag concrete with different NaOH concentrations and sodium silicate to sodium hydroxide ratios

open access: yesJournal of Sustainable Construction Materials and Technologies, 2019
Waste disposal becomes a crucial issue for both the environment and the economy. One of the solutions for waste disposal is to utilize waste materials in concrete production.
Anıl Ni̇ş
doaj   +1 more source

Modeling the phase evolution in alkali-activated slag cements upon interaction with seawater

open access: yesCase Studies in Construction Materials, 2022
The stability of different phases in a binder exposed to seawater is essential when assessing the performance of structures in a marine environment. The understanding of stability of alkali-activated slag upon interaction with seawater is insufficient ...
Kamasani Chiranjeevi Reddy   +2 more
doaj   +1 more source

External Sulphate Attack on Alkali-Activated Slag and Slag/Fly Ash Concrete [PDF]

open access: yesBuildings, 2022
Two types of alkali-activated material (AAM) concretes were exposed to various sulphate bearing-solutions for over two years. Physical changes to the concrete specimen and chemical changes in the exposure liquid were studied in an attempt to understand how sulphate attack occurs in such binders and the role the mix variables play in offering resistance
Dali Bondar, Sreejith Nanukuttan
openaire   +5 more sources

Surface characteristics and electrochemical behaviors of passive reinforcing steel in alkali-activated slag

open access: yes, 2021
In alkali-activated slag (AAS), the passive film significantly influences the corrosion behavior of the reinforcing steel. The relationship between the surface characteristics and electrochemical performance of the passive reinforcing steel was ...
Wang, Yangyang   +10 more
core   +1 more source

Mechanical Properties Investigation and Optimization of Ambiently Cured Alkali-Activated Concrete

open access: yesCommunications, 2023
The mechanical, microstructural and statical interpretation of the Alkali Activated Concrete (AAC), prepared using fly ash with crushed granulated corex slag as the binder ingredient, are examined in this work.
Kothoju Saibaba, B Kondraivendhan
doaj   +1 more source

A review on alkali-activated slag concrete

open access: yesAin Shams Engineering Journal, 2021
Alkali-activated concrete (AAC) has attracted considerable attention since its first use as an alternative material to the well-known traditional Portland cement concrete (PCC) due to their superior properties and environmental impact. In this paper, a comprehensive review on the present knowledge about the AAC in terms of historical background ...
Ismail Amer   +4 more
openaire   +2 more sources

The relationship between chloride resistance and microstructure of alkali-activated flyash-slag concrete [PDF]

open access: yes, 2022
Due to the threat of global warming, the development of sustainable construction and building materials has attracted extensive attention. Alkali-activated materials (AAMs) are considered as a promising candidate to ordinary Portland cement (OPC).
Zhang, Jingxiao
core   +1 more source

Study on Mechanical Properties and Durability of Alkali-Activated Silicomanganese Slag Concrete (AASSC)

open access: yesBuildings, 2022
Alkali-activated materials are produced by chemically polymerizing the aluminosilicate materials using alkaline activators, which can effectively lower the greenhouse-gas emissions (approximately 73%) released by ordinary Portland cement (OPC ...
Baifu Luo   +2 more
doaj   +1 more source

Effect of Carbonation on Alkali‐Activated Slag Paste

open access: yesJournal of the American Ceramic Society, 2006
Carbonation on waterglass‐ and NaOH‐activated slag pastes was analyzed and compared with carbonation in Portland cement pastes to determine possible differences. Thermogravimetry‐differential thermal analysis (TG/DTA), Fourier‐transform infrared spectrometry, and nuclear magnetic resonance were used to ...
Palacios, Marta, Puertas, Francisca
openaire   +2 more sources

Mechanism of Alkali‐Activated Copper‐Nickel Slag Material [PDF]

open access: yesAdvances in Civil Engineering, 2020
A copper‐nickel slag‐based alkali‐activated cementing material (CNSCM) for backfilling was prepared using copper‐nickel slag as a raw material and sodium silicate (SS) as an activating agent. The effects of SS content (6%, 8%, and 10%) and curing humidity on the compressive strength of CNSCM were investigated using an electronic universal testing ...
Tingting Zhang   +6 more
openaire   +3 more sources

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