Results 211 to 220 of about 55,446 (258)

Theoretical Investigation on the Mechanism of Ni⁰(enolate)-Ate Complex-Catalyzed C(sp²)-F Bond Activation and the Origin of Alkali Metal Cations Modulating Enantioselectivity. [PDF]

JACS Au
You XX, Zhong RL, Su ZM.
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Paste-Level Evaluation of a Hybrid Silicomanganese Slag-Steel Slag-OPC-Activated Binder: Mechanical Performance, Simplified Carbon Footprint and Mn Leaching Reduction. [PDF]

Materials (Basel)
Duan J, Zhang X, Zhao J, Hua S, Li H.
europepmc   +1 more source

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Properties of alkali-activated lightweight concrete

2022
This chapter presents a brief overview of the properties of alkali-activated lightweight concrete. Nowadays, the production of lightweight concrete has great attentions due to its extraordinary advantages such as reduced mass, improved sound and thermal insulation properties.
Colangelo F., Farina I., Travaglioni M., Salzano C., Cioffi R., Petrillo Antonella   +5 more
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Effect of Alkali-Activators on the Strength Development and Drying Shrinkage of Alkali-Activated Binder

Advanced Materials Research, 2012
The purpose of this study is to investigate the effect of various contents and modulus ratios of alkali activators on strength development and drying shrinkage of alkali-activated slag pastes. Experimental results show that the alkali-modulus ratio is the key factor influencing pH value and drying shrinkage.
Mao Chieh Chi, Jiang Jhy Chang, Ran Huang, Zai Long Weng   +3 more
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Decalcification resistance of alkali-activated slag

Journal of Hazardous Materials, 2012
This paper analyses the effects of decalcification in concentrated 6M NH(4)NO(3) solution on mechanical and microstructural properties of alkali-activated slag (AAS). Portland-slag cement (CEM II/A-S 42.5 N) was used as a benchmark material. Decalcification process led to a decrease in strength, both in AAS and in CEM II, and this effect was more ...
Miroslav M, Komljenović, Zvezdana, Baščarević, Nataša, Marjanović, Violeta, Nikolić   +3 more
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Collagenolytic Activity of Alkali-Burned Corneas

Archives of Ophthalmology, 1969
Collagenolytic activity of alkali-burned corneas of rabbits was investigated using a tissue-culture assay technique. The technique was standardized, and in every instance, tissues from the immediate vicinity of the ulcers or perforations showed substantial collagenase production, while generally, tissues more than 2 mm away from the lesions were free ...
S I, Brown, C A, Weller, H E, Wassermann
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Fracture properties of alkali activated mortars

Proceedings of the 10th International Conference on Fracture Mechanics of Concrete and Concrete Structures, 2019
In this paper, three different coal fly ash-based alkali activated mortars are studied. The three different mortars are obtained using the same binding system but different types (i.e. silica sand or expanded perlite) and sizes of aggregates. Small-scale beams are constructed together with additional specimens for material characterization.
GIULIA BAIETTI, LORENZA CARABBA, GIOVANNI QUARTARONE, CHRISTIAN CARLONI, STEFANIA MANZI, MARIA CHIARA BIGNOZZI   +5 more
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Effect of the inherent alkalis of alkali activated slag on the risk of alkali silica reaction

Cement and Concrete Research, 2017
Abstract Alkali silica reaction (ASR) occurred in the alkali activated slag (AAS) concrete was evaluated by a revised mortar prism method. The mortars were made of blast furnace slags activated by alkali silicate solution possessing different modulus (0.5, 0.75, 1 and 2) as well as cations (sodium and potassium) and standard sand with a volume ...
Ricarda Tänzer, Yu Jin, Dietmar Stephan
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Immobilisation of iodide in alkali-activated materials

Chemosphere
At the Fukushima Daiichi Nuclear Power Station (FDNPS), continuous water circulation cools fuel debris, leading to the presence of radionuclides such as Sr-30, Cs-137, and I-129 in the cooling water. These radionuclides are adsorbed and co-precipitated by various materials.
Raudhatul Islam Chaerun, Manami Ishimura, Pramesti Prihutami, Xiaobo Niu, Yusuke Ohya, Kazuma Kuroda, Kanako Toda, Ryosuke Kikuchi, Tsubasa Otake, John L. Provis, Yogarajah Elakneswaran, Tsutomu Sato   +11 more
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Application of nanomaterials in alkali-activated materials

2019
This chapter provides a comprehensive overview on the application of nanomaterials in alkali-activated materials. During the last decades alkali-activated materials have gained great attention as a promising alternative to Portland cement, which is associated with the great primary resources and energy consumption, and greenhouse gas emission.
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