Microstructural characterisation of lightweight granules made from masonry rubble
Microstructural characterisation of lightweight granules made from masonry rubble
复制标题
砌体碎石制成的轻质颗粒的微观结构特征
DOI:
10.1016/j.micromeso.2014.08.060
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发表时间:
2015
影响因子:
5.2
通讯作者:
A. Zimathies
中科院分区:
文献类型:
--
作者:
K. Rübner;S. Hempel;M. Lindemann;B. Peplinski;N. Vogler;A. Zimathies
The pore structure of lightweight granules made from masonry rubble was studied in order to better understand their engineering properties. Thermally and hydrothermally hardened granules were tested. Analysis by ESEM, mercury porosimetry and sorption methods yield important insight into their microstructure. The thermal granules are characterised by partly melted vitreous areas and large internal macropores that are connected via narrow throats. They show a marginal specific surface area along with a hydrophobic behaviour. In contrast, the hydrothermal granules have an accessible mesoporous system containing plate-like and ink-bottle pores. The shape of their water isotherms depending on the granules’ CaO content is sensitive to the morphology of calcium silicate hydrate phases (CSH). The hysteresis changes from a narrow loop that closes at low pressures, which can be attributed to coarser more crystalline CSH, to a large triangular-shaped loop along with a low pressure hysteresis, which is characteristic for fine fibre-like CSH with ink-bottle and plate-like pore morphologies. Granules with fibre-like CSH have the higher specific surfaces areas but those with more crystalline CSH show stronger physisorption of water molecules.
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DOI:
--
发表时间:
1996
期刊:
影响因子:
--
作者:
J. Adolphs;M. Setzer
通讯作者:
M. Setzer
DOI:
--
发表时间:
2013
期刊:
影响因子:
--
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Anette Müller;Alexander Schnell;Katrin Rübner
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Katrin Rübner
DOI:
--
发表时间:
1995
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作者:
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D. Cassel
DOI:
--
发表时间:
2012
期刊:
影响因子:
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作者:
Katrin Rübner;Alexander Schnell;F. Haamkens;Petra Jakubcová;Anette Müller
通讯作者:
Anette Müller
影响因子:
10.5
作者:
R. Wasserman;A. Bentur
通讯作者:
R. Wasserman;A. Bentur