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Effect of napier grass ash on the autogenous shrinkage of low water binder ratio cement based materials

Yang Lyu UGent, Guang Ye UGent and Geert De Schutter UGent (2016) Microstructure Related Durability of Cementitious Composites. RILEM PRO 117. p.434-441
abstract
This work presents an experimental investigation on the effect of Napier grass ash (NGA) on the early age autogenous shrinkage of NGA blended cement paste with low water/binder ratio. Further burnt process was conducted on the as received raw NGA to decrease the carbon content, and comparison study was performed. Comprehensive tests were performed on the sealed samples to evaluate the behavior of autogenous shrinkage and self-desiccation in NGA blended cement pastes with low water/binder ratio 0.25. The autogenous shrinkage was conducted according to the standard method ASTM C1698. Setting time was determined by the Vicat needle apparatus according to the standard method ASTM C191. Internal RH measurement was performed to reveal the self-desiccation process of the sealed cement pastes at very early age. Considering the relationship between the self-desiccation and autogenous shrinkage of cementitious materials, a new ‘time zero’ was proposed. The effect of replacement of cement by NGA on the autogenous shrinkage of low water/binder ratio cement pastes was revealed by comparison study between the autogenous shrinkage measured from final setting time as defined in standard method ASTM C1698 and the new ‘time zero’.
Please use this url to cite or link to this publication:
author
organization
year
type
conference (other)
publication status
published
subject
keyword
Autogenous shrinkage, Self-desiccation, Internal RH, Napier grass ash
in
Microstructure Related Durability of Cementitious Composites
editor
Changwen Miao, Wei Sun, Jiaping Liu, Huisu Chen, Guang Ye UGent and Klaas Van Breugel
volume
RILEM PRO 117
pages
434 - 441
publisher
RILEM
place of publication
Paris (France)
conference name
3rd International RILEM Conference on Microstructure Related Durability of Cementitious Composites
conference location
Nanjing (China)
conference start
2016-10-24
conference end
2016-10-26
ISBN
978-2-35158-188-9
978-2-35158-189-6
language
English
UGent publication?
yes
classification
C1
copyright statement
I have transferred the copyright for this publication to the publisher
id
8531028
handle
http://hdl.handle.net/1854/LU-8531028
date created
2017-09-13 08:38:21
date last changed
2017-09-18 08:12:26
@inproceedings{8531028,
  abstract     = {This work presents an experimental investigation on the effect of Napier grass ash (NGA) on the early age autogenous shrinkage of NGA blended cement paste with low water/binder ratio. Further burnt process was conducted on the as received raw NGA to decrease the carbon content, and comparison study was performed.
Comprehensive tests were performed on the sealed samples to evaluate the behavior of autogenous shrinkage and self-desiccation in NGA blended cement pastes with low water/binder ratio 0.25. The autogenous shrinkage was conducted according to the standard method ASTM C1698. Setting time was determined by the Vicat needle apparatus according to the standard method ASTM C191. Internal RH measurement was performed to reveal the self-desiccation process of the sealed cement pastes at very early age.
Considering the relationship between the self-desiccation and autogenous shrinkage of cementitious materials, a new {\textquoteleft}time zero{\textquoteright} was proposed. The effect of replacement of cement by NGA on the autogenous shrinkage of low water/binder ratio cement pastes was revealed by comparison study between the autogenous shrinkage measured from final setting time as defined in standard method ASTM C1698 and the new {\textquoteleft}time zero{\textquoteright}.},
  author       = {Lyu, Yang and Ye, Guang and De Schutter, Geert},
  booktitle    = {Microstructure Related Durability of Cementitious Composites},
  editor       = {Miao, Changwen and Sun, Wei and Liu, Jiaping and Chen, Huisu and Ye, Guang and Van Breugel, Klaas},
  isbn         = {978-2-35158-188-9},
  keyword      = {Autogenous shrinkage,Self-desiccation,Internal RH,Napier grass ash},
  language     = {eng},
  location     = {Nanjing (China)},
  pages        = {434--441},
  publisher    = {RILEM},
  title        = {Effect of napier grass ash on the autogenous shrinkage of low water binder ratio cement based materials},
  volume       = {RILEM PRO 117},
  year         = {2016},
}

Chicago
Lyu, Yang, Guang Ye, and Geert De Schutter. 2016. “Effect of Napier Grass Ash on the Autogenous Shrinkage of Low Water Binder Ratio Cement Based Materials.” In Microstructure Related Durability of Cementitious Composites, ed. Changwen Miao, Wei Sun, Jiaping Liu, Huisu Chen, Guang Ye, and Klaas Van Breugel, RILEM PRO 117:434–441. Paris (France): RILEM.
APA
Lyu, Y., Ye, G., & De Schutter, G. (2016). Effect of napier grass ash on the autogenous shrinkage of low water binder ratio cement based materials. In C. Miao, W. Sun, J. Liu, H. Chen, G. Ye, & K. Van Breugel (Eds.), Microstructure Related Durability of Cementitious Composites (Vol. RILEM PRO 117, pp. 434–441). Presented at the 3rd International RILEM Conference on Microstructure Related Durability of Cementitious Composites, Paris (France): RILEM.
Vancouver
1.
Lyu Y, Ye G, De Schutter G. Effect of napier grass ash on the autogenous shrinkage of low water binder ratio cement based materials. In: Miao C, Sun W, Liu J, Chen H, Ye G, Van Breugel K, editors. Microstructure Related Durability of Cementitious Composites. Paris (France): RILEM; 2016. p. 434–41.
MLA
Lyu, Yang, Guang Ye, and Geert De Schutter. “Effect of Napier Grass Ash on the Autogenous Shrinkage of Low Water Binder Ratio Cement Based Materials.” Microstructure Related Durability of Cementitious Composites. Ed. Changwen Miao et al. RILEM PRO 117. Paris (France): RILEM, 2016. 434–441. Print.