Stability of cementless building units based on oil shale fly ash binder in various conditions

Constantin Freidin

doi:10.1016/S0950-0618(01)00032-0

Stability of cementless building units based on oil shale fly ash binder in various conditions

Constantin Freidin

Research output: Contribution to journal › Article › peer-review

7 Scopus citations

Abstract

The long-term aging processes of cementless building units based on oil shale binder in water, moist and ambient air conditions were studied. The composition and the microstructure of the cured binder were also examined. An initial increase up to 3 months and then a reduction in strength of specimens with OSFA binder were noticed in ambient air. The disintegration of the hardened system was related to the transformation of ettringite - one of the most important crystal phases of cured binder. The investigation demonstrated a positive effect on the stability of the material when it was exposed to ambient air, if low-calcium coal fly ash was included in its composition.

Original language	English
Pages (from-to)	23-28
Number of pages	6
Journal	Construction and Building Materials
Volume	16
Issue number	1
DOIs	https://doi.org/10.1016/S0950-0618(01)00032-0
State	Published - 1 Feb 2002

Keywords

Aging process
Cementless building unit
Water, moist and ambient air conditions

ASJC Scopus subject areas

Civil and Structural Engineering
Building and Construction
General Materials Science

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10.1016/S0950-0618(01)00032-0

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abstract = "The long-term aging processes of cementless building units based on oil shale binder in water, moist and ambient air conditions were studied. The composition and the microstructure of the cured binder were also examined. An initial increase up to 3 months and then a reduction in strength of specimens with OSFA binder were noticed in ambient air. The disintegration of the hardened system was related to the transformation of ettringite - one of the most important crystal phases of cured binder. The investigation demonstrated a positive effect on the stability of the material when it was exposed to ambient air, if low-calcium coal fly ash was included in its composition.",

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note = "Funding Information: This research has been supported by a grant from the Rushi Foundation (Israel). The authors would like to express their gratitude to the Jacob Blaustein Institute for Desert Research, Ben-Gurion University of the Negev (Israel) for making laboratory investigations possible. ",

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N2 - The long-term aging processes of cementless building units based on oil shale binder in water, moist and ambient air conditions were studied. The composition and the microstructure of the cured binder were also examined. An initial increase up to 3 months and then a reduction in strength of specimens with OSFA binder were noticed in ambient air. The disintegration of the hardened system was related to the transformation of ettringite - one of the most important crystal phases of cured binder. The investigation demonstrated a positive effect on the stability of the material when it was exposed to ambient air, if low-calcium coal fly ash was included in its composition.

AB - The long-term aging processes of cementless building units based on oil shale binder in water, moist and ambient air conditions were studied. The composition and the microstructure of the cured binder were also examined. An initial increase up to 3 months and then a reduction in strength of specimens with OSFA binder were noticed in ambient air. The disintegration of the hardened system was related to the transformation of ettringite - one of the most important crystal phases of cured binder. The investigation demonstrated a positive effect on the stability of the material when it was exposed to ambient air, if low-calcium coal fly ash was included in its composition.

KW - Aging process

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Stability of cementless building units based on oil shale fly ash binder in various conditions

Abstract

Keywords

ASJC Scopus subject areas

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