IN SITU XRD AND SOLID-STATE NMR ANALYSIS ON TOBERMORITE FORMATION：EFFECT OF γ-Al&lt;sub&gt;2&lt;/sub&gt;O&lt;sub&gt;3&lt;/sub&gt; AND GYPSUM ADDITION

久仁雄, 松井; 晃博, 小川; 信也, 松野; 三依, 名雪

doi:10.14250/cement.67.10

Cited by 4 publications

(1 citation statement)

References 17 publications

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“…Amorphous phase of tiles waste and pot shards waste in this study contains several mass% of Al 2 O 3 . In many studies, Al ion is reported as accelerator and stabilizer for tobermorite formation . The shift of the basal spacing of tobermorite‐1.1 nm at around 7.8° (CuKα 2θ) in XRD patterns indicates substitution ratio of Al ions to Si ions in silicate‐chains of tobermorite .…”

Section: Resultsmentioning

confidence: 99%

Aluminum silicate recycling raw materials for production of autoclaved aerated concrete

et al. 2018

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Aluminum silicate recycling raw materials such as tiles and pot shards waste, in which the main phases were Al-Si-O amorphous with Mullite and -Quartz, were subjected to the utilization for the production of autoclaved aerated concrete (AAC). In case of adding silica gel or fine-grinded quartz sand for production of AAC, tobermorite formation is declined. By adding tiles waste up to 33% substitution for silica sand, tobermorite formation is improved. Tobermorite formation is not altered by fineness of tiles waste. The possibility of replacing silica sand by tiles and pod shards waste at the amount of up to 27% for AAC panels and blocks is confirmed.

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Section: Resultsmentioning

confidence: 99%

Aluminum silicate recycling raw materials for production of autoclaved aerated concrete

et al. 2018

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EFFECT OF CURING TEMPERATURE ON THE CRYSTAL STRUCTURES OF C-（A）-S-H and Al-TOBERMORITE

SAITO

Mitsumori

Suzuki

et al. 2022

Cement Science and Concrete Technology

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Evaluation of the Crystal Structure of C-A-S-H in the Zeolite and Tobermorite Formation Zone

MAWATARI,

SAITO,

KAMIMURA

et al. 2024

J. Soc. Mat. Sci., Japan

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This paper reports on the chemical behavior of the C-A-S-H, tobermorite, and zeolite,. C-A-S-H, zeolite and tobermorite blend gel were prepared with different temperature (80℃ and 120℃) and characterized by Ca/Si ratio. As a result, the formation of zeolite structure was suppressed and the formation of C-A-S-H was more likely to occur as the amount of Ca added increased at both temperatures. In addition, the three-dimensional network bonding of SiO4 and AlO4 tetrahedra caused by zeolite was more likely to occur at high temperatures than at low temperatures, and the zeolite framework structure was more likely to be maintained. In addition, regardless of the temperature conditions, when the Ca/Si ratio in the system was 0.4, the bonding states of the products, SiO4 tetrahedrons, and AlO4 tetrahedrons in the system were similar.

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IN SITU XRD AND SOLID-STATE NMR ANALYSIS ON TOBERMORITE FORMATION：EFFECT OF γ-Al<sub>2</sub>O<sub>3</sub> AND GYPSUM ADDITION

Cited by 4 publications

References 17 publications

Aluminum silicate recycling raw materials for production of autoclaved aerated concrete

Aluminum silicate recycling raw materials for production of autoclaved aerated concrete

EFFECT OF CURING TEMPERATURE ON THE CRYSTAL STRUCTURES OF C-（A）-S-H and Al-TOBERMORITE

Evaluation of the Crystal Structure of C-A-S-H in the Zeolite and Tobermorite Formation Zone

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