Paper Title:
Water Absorbing and Releasing of Lightweight Aggregate and its Influence on Frost-Resistance of Combined Aggregate Concrete
  Abstract

Water absorbing and releasing property of lightweight aggregate (LWA) in concrete and its influence on microstructure of interfacial zone as well as frost-resistance of combined aggregate prepared with different water absorption LWA and w/b ratios were investigated. The results show that, as for concrete with low w/b ratio, the 28d frost-resistance of concrete prepared with high water absorption LWA is worse, however with the increase of curing age, the 90d frost-resistance of concrete improves obviously, which is due to the water releasing of LWA that leads to the recovery of its air entraining effect as well as the densification and thicken of interfacial zone. So the LWA with moderate water absorption should be selected to prepare the low w/b ratio concrete. As for concrete with high w/b ratio, the frost-resistance of concrete prepared with low water absorption LWA is the best. This is account for the dense shell of ceramsite that could reduce the soakage from loose cement paste under frozen pressure.

  Info
Periodical
Advanced Materials Research (Volumes 217-218)
Edited by
Zhou Mark
Pages
51-56
DOI
10.4028/www.scientific.net/AMR.217-218.51
Citation
L. X. Gao, L. J. Kong, Y. Ge, "Water Absorbing and Releasing of Lightweight Aggregate and its Influence on Frost-Resistance of Combined Aggregate Concrete", Advanced Materials Research, Vols. 217-218, pp. 51-56, 2011
Online since
March 2011
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Xiao Yan Xiong, Miao Zhang, Xiao Ping Li, Shao Juan Yu
Abstract:Based on chaotic characteristics in vertical direction of vibrating screen sides, nonlinear methods were proposed to diagnose crack of...
1258
Authors: Ying Lin Li, Li Hui Cao, Lian He Yang
Abstract:Weft knitted pattern design is one of the most important compositions of textile CAD. Traditional pattern design has a higher request on...
576
Authors: Yong Hua Zhang, Jian Hui He, Guo Qing Zhang
Abstract:This paper aims to understand influence of the obliquity of fin ray on its motion performance. An environment-friendly propulsion system...
267
Authors: Ioana Pintilie, Francesco Moscatelli, Roberta Nipoti, Antonella Poggi, Sandro Solmi, Lars S. Løvlie, Bengt G. Svensson
Abstract:The effect of nitrogen (N) introduced by ion implantation at the SiO2/4H-SiC interface on the capacitance of the MOS capacitors is...
326
Authors: Yi Mei, Fang Ping Wang, Qiao Ying Liu, Yu Tao Mao
Abstract:To solve the thermal deformation caused by thermal load of heavy machinery gearbox, it is established that coupled analysis model to carry...
651