Drying of Concrete

Kurt Kielsgaard Hansen; Mette Rica Geiker; Peter Vagn Nygaard; Ane Mette Kjeldsen

Drying of Concrete

Kurt Kielsgaard Hansen
, Mette Rica Geiker
, Peter Vagn Nygaard
, Ane Mette Kjeldsen

Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research

Abstract

Estimated and measured relative humidity (RH) change during drying are compared for two concretes, 1: w/c=0.46 and 2: w/(c+0.5fa+2sf)=0.50. The estimations were undertaken by means of the Swedish program TorkaS 1.0. Measurements were performed by RH-sensors type Humi-Guard. Drying of 150 mm thick samples from sides at 60% RH and 22 °C took place from 4 to 56 days after casting. At the end of the drying period the measured RH was about 4% lower than the estimated RH at 1/5th depth from the exposed surface for both concretes. In the middle of the samples, the measured RH of concretes 1 and 2 were 2% lower and 2% higher, respectively, than estimated values.

Original language	English
Title of host publication	Proceedings of Nordic Concrete Research Meeting
Publisher	Helli Grafisk AS, Oslo
Publication date	2002
Pages	283-285
ISBN (Print)	82-91341-56-7
Publication status	Published - 2002
Event	XVIII Symposium on Nordic Concrete Research - Helsingør, Denmark Duration: 12 Jun 2002 → 14 Jun 2002 Conference number: 18

Conference

Conference	XVIII Symposium on Nordic Concrete Research
Number	18
Country/Territory	Denmark
City	Helsingør
Period	12/06/2002 → 14/06/2002

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@inproceedings{952ed150d0f940d88eb0eb36a5c5bcaa,

title = "Drying of Concrete",

abstract = "Estimated and measured relative humidity (RH) change during drying are compared for two concretes, 1: w/c=0.46 and 2: w/(c+0.5fa+2sf)=0.50. The estimations were undertaken by means of the Swedish program TorkaS 1.0. Measurements were performed by RH-sensors type Humi-Guard. Drying of 150 mm thick samples from sides at 60\% RH and 22 °C took place from 4 to 56 days after casting. At the end of the drying period the measured RH was about 4\% lower than the estimated RH at 1/5th depth from the exposed surface for both concretes. In the middle of the samples, the measured RH of concretes 1 and 2 were 2\% lower and 2\% higher, respectively, than estimated values.",

keywords = "Concrete, drying, relative humidity, estimation, measurements",

author = "Hansen, \{Kurt Kielsgaard\} and Geiker, \{Mette Rica\} and Nygaard, \{Peter Vagn\} and Kjeldsen, \{Ane Mette\}",

year = "2002",

language = "English",

isbn = "82-91341-56-7",

pages = "283--285",

booktitle = "Proceedings of Nordic Concrete Research Meeting",

publisher = "Helli Grafisk AS, Oslo",

note = "XVIII Symposium on Nordic Concrete Research ; Conference date: 12-06-2002 Through 14-06-2002",

}

TY - GEN

T1 - Drying of Concrete

AU - Hansen, Kurt Kielsgaard

AU - Geiker, Mette Rica

AU - Nygaard, Peter Vagn

AU - Kjeldsen, Ane Mette

N1 - Conference code: 18

PY - 2002

Y1 - 2002

N2 - Estimated and measured relative humidity (RH) change during drying are compared for two concretes, 1: w/c=0.46 and 2: w/(c+0.5fa+2sf)=0.50. The estimations were undertaken by means of the Swedish program TorkaS 1.0. Measurements were performed by RH-sensors type Humi-Guard. Drying of 150 mm thick samples from sides at 60% RH and 22 °C took place from 4 to 56 days after casting. At the end of the drying period the measured RH was about 4% lower than the estimated RH at 1/5th depth from the exposed surface for both concretes. In the middle of the samples, the measured RH of concretes 1 and 2 were 2% lower and 2% higher, respectively, than estimated values.

AB - Estimated and measured relative humidity (RH) change during drying are compared for two concretes, 1: w/c=0.46 and 2: w/(c+0.5fa+2sf)=0.50. The estimations were undertaken by means of the Swedish program TorkaS 1.0. Measurements were performed by RH-sensors type Humi-Guard. Drying of 150 mm thick samples from sides at 60% RH and 22 °C took place from 4 to 56 days after casting. At the end of the drying period the measured RH was about 4% lower than the estimated RH at 1/5th depth from the exposed surface for both concretes. In the middle of the samples, the measured RH of concretes 1 and 2 were 2% lower and 2% higher, respectively, than estimated values.

KW - Concrete, drying, relative humidity, estimation, measurements

M3 - Article in proceedings

SN - 82-91341-56-7

SP - 283

EP - 285

BT - Proceedings of Nordic Concrete Research Meeting

PB - Helli Grafisk AS, Oslo

T2 - XVIII Symposium on Nordic Concrete Research

Y2 - 12 June 2002 through 14 June 2002

ER -

Drying of Concrete

Abstract

Conference

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