Ultrasonic sound speed of hydrating calcium sulphate hemihydrate; Part 2, The correlation of sound velocity to hydration degree

A.C.J. Korte, de; H.J.H. Brouwers

Ultrasonic sound speed of hydrating calcium sulphate hemihydrate; Part 2, The correlation of sound velocity to hydration degree

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Academic › peer-review

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Abstract

In this article the sound velocity through a mix is correlated to the hydration degree of the mix. Models are presented predicting the sound velocity through fresh slurries and hardened products. These two states correspond to the starting and finishing point of the hydration process. The present research shows that a linear relation between the amount of hydration-product (gypsum) formed (Smith et al., 2002) and sound velocity can be used to describe this process. To this end, the amount of hydration-product formed is determined by the using the equations of Schiller (1974) for the hydration process and of Brouwers (2010) for the volume fractions of binder, water and hydration products during the hydration process. The presented model shows that the induction time and gypsum growth rate are linear related to the water/gypsum-ratio.

Original language	English
Title of host publication	Tagungsbericht 1. Weimarer Gipstagung, 30. - 31. März 2011, Weimar, Bundesrepublik Deutschland
Editors	H.B. Fischer, Chr. Mattes, C. Beutha
Place of Publication	Germany
Publisher	F.A. Finger-Institut für Baustoffkunde
Pages	65-71
ISBN (Print)	9783000340741
Publication status	Published - 2011
Event	conference; The Weimar gypsum conference; 2011-03-30; 2011-03-31 - Duration: 30 Mar 2011 → 31 Mar 2011

Conference

Conference	conference; The Weimar gypsum conference; 2011-03-30; 2011-03-31
Period	30/03/11 → 31/03/11
Other	The Weimar gypsum conference

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Korte, de, A. C. J., & Brouwers, H. J. H. (2011). Ultrasonic sound speed of hydrating calcium sulphate hemihydrate; Part 2, The correlation of sound velocity to hydration degree. In H. B. Fischer, C. Mattes, & C. Beutha (Eds.), Tagungsbericht 1. Weimarer Gipstagung, 30. - 31. März 2011, Weimar, Bundesrepublik Deutschland (pp. 65-71). F.A. Finger-Institut für Baustoffkunde.

Korte, de, A.C.J. ; Brouwers, H.J.H. / Ultrasonic sound speed of hydrating calcium sulphate hemihydrate; Part 2, The correlation of sound velocity to hydration degree. Tagungsbericht 1. Weimarer Gipstagung, 30. - 31. März 2011, Weimar, Bundesrepublik Deutschland. editor / H.B. Fischer ; Chr. Mattes ; C. Beutha. Germany : F.A. Finger-Institut für Baustoffkunde, 2011. pp. 65-71

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title = "Ultrasonic sound speed of hydrating calcium sulphate hemihydrate; Part 2, The correlation of sound velocity to hydration degree",

abstract = "In this article the sound velocity through a mix is correlated to the hydration degree of the mix. Models are presented predicting the sound velocity through fresh slurries and hardened products. These two states correspond to the starting and finishing point of the hydration process. The present research shows that a linear relation between the amount of hydration-product (gypsum) formed (Smith et al., 2002) and sound velocity can be used to describe this process. To this end, the amount of hydration-product formed is determined by the using the equations of Schiller (1974) for the hydration process and of Brouwers (2010) for the volume fractions of binder, water and hydration products during the hydration process. The presented model shows that the induction time and gypsum growth rate are linear related to the water/gypsum-ratio.",

author = "{Korte, de}, A.C.J. and H.J.H. Brouwers",

year = "2011",

language = "English",

isbn = "9783000340741",

pages = "65--71",

editor = "H.B. Fischer and Chr. Mattes and C. Beutha",

booktitle = "Tagungsbericht 1. Weimarer Gipstagung, 30. - 31. M{\"a}rz 2011, Weimar, Bundesrepublik Deutschland",

publisher = "F.A. Finger-Institut f{\"u}r Baustoffkunde",

note = "conference; The Weimar gypsum conference; 2011-03-30; 2011-03-31 ; Conference date: 30-03-2011 Through 31-03-2011",

}

Korte, de, ACJ & Brouwers, HJH 2011, Ultrasonic sound speed of hydrating calcium sulphate hemihydrate; Part 2, The correlation of sound velocity to hydration degree. in HB Fischer, C Mattes & C Beutha (eds), Tagungsbericht 1. Weimarer Gipstagung, 30. - 31. März 2011, Weimar, Bundesrepublik Deutschland. F.A. Finger-Institut für Baustoffkunde, Germany, pp. 65-71, conference; The Weimar gypsum conference; 2011-03-30; 2011-03-31, 30/03/11.

Ultrasonic sound speed of hydrating calcium sulphate hemihydrate; Part 2, The correlation of sound velocity to hydration degree. / Korte, de, A.C.J.; Brouwers, H.J.H.

Tagungsbericht 1. Weimarer Gipstagung, 30. - 31. März 2011, Weimar, Bundesrepublik Deutschland. ed. / H.B. Fischer; Chr. Mattes; C. Beutha. Germany : F.A. Finger-Institut für Baustoffkunde, 2011. p. 65-71.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Academic › peer-review

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T1 - Ultrasonic sound speed of hydrating calcium sulphate hemihydrate; Part 2, The correlation of sound velocity to hydration degree

AU - Korte, de, A.C.J.

AU - Brouwers, H.J.H.

PY - 2011

Y1 - 2011

N2 - In this article the sound velocity through a mix is correlated to the hydration degree of the mix. Models are presented predicting the sound velocity through fresh slurries and hardened products. These two states correspond to the starting and finishing point of the hydration process. The present research shows that a linear relation between the amount of hydration-product (gypsum) formed (Smith et al., 2002) and sound velocity can be used to describe this process. To this end, the amount of hydration-product formed is determined by the using the equations of Schiller (1974) for the hydration process and of Brouwers (2010) for the volume fractions of binder, water and hydration products during the hydration process. The presented model shows that the induction time and gypsum growth rate are linear related to the water/gypsum-ratio.

AB - In this article the sound velocity through a mix is correlated to the hydration degree of the mix. Models are presented predicting the sound velocity through fresh slurries and hardened products. These two states correspond to the starting and finishing point of the hydration process. The present research shows that a linear relation between the amount of hydration-product (gypsum) formed (Smith et al., 2002) and sound velocity can be used to describe this process. To this end, the amount of hydration-product formed is determined by the using the equations of Schiller (1974) for the hydration process and of Brouwers (2010) for the volume fractions of binder, water and hydration products during the hydration process. The presented model shows that the induction time and gypsum growth rate are linear related to the water/gypsum-ratio.

M3 - Conference contribution

SN - 9783000340741

SP - 65

EP - 71

BT - Tagungsbericht 1. Weimarer Gipstagung, 30. - 31. März 2011, Weimar, Bundesrepublik Deutschland

A2 - Fischer, H.B.

A2 - Mattes, Chr.

A2 - Beutha, C.

PB - F.A. Finger-Institut für Baustoffkunde

CY - Germany

T2 - conference; The Weimar gypsum conference; 2011-03-30; 2011-03-31

Y2 - 30 March 2011 through 31 March 2011

ER -

Ultrasonic sound speed of hydrating calcium sulphate hemihydrate; Part 2, The correlation of sound velocity to hydration degree

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