Results 211 to 220 of about 55,242 (253)

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
openaire   +2 more sources

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
openaire   +1 more source

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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Properties of alkali-activated clinoptilolite

Cement and Concrete Research, 2000
Abstract Materials made by hydrating the natural zeolite clinoptilolite with calcium hydroxide (Ca(OH)2) have been characterised and compared to other alkali-activated waste-derived and naturally occurring pozzolana. Compressive strength is dependent on the Ca(OH)2 content, clinoptilolite particle size, and curing conditions. Optimising each of these
Elena Alcantara Ortega, Chris Cheeseman, Jonathan Knight, Maria Loizidou   +3 more
openaire   +1 more source

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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Alkali activation of basalt

2014
To further reduce the emission of greenhouse gasses, raw materials that can be directly alkali activated are looked for. In this study the reaction of basalt with concentrated NaOH or KOH solutions to form geopolymer like materials is investigated. A comparison with alkali activated kaolinite is made.
Rahier, Hubert, Esaifan, Muayad, Wastiels, Jan, Khoury, Hani   +3 more
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Alkali-Activated Cement Subject to Alkali-Aggregate Reaction

ACI Materials Journal, 2021
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Alkali-aggregate reaction in alkali-activated cement concretes

2022
Mijia Yang, Zhili (Jerry) Gao
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Alkali-hydrothermal activation of tailings with red mud as a supplementary alkali source to synthesize one-part geopolymer

Advanced Composites and Hybrid Materials, 2023
Chen Zhenyu, El-Bahy Zeinhom M, Ibrahim Mohamed M   +2 more
exaly  

Effect of Alkali Content and Activator Modulus on Mechanical Properties of Alkali Activated Mortars

2020
Alkali activation is a promising method of reducing cement production considerably without further significant investments. Utilizationof these materials are of extreme importance when environmental aspects such as CO2 emissions and energy consumptions areconsidered.
openaire   +1 more source