|
|||||
|
|
Water absorption in internally cured mortar made with water-filled lightweight aggregate |
|
| Authors: | Ryan Henkensiefken Javier Castro Dale Bentz Tommy Nantung Jason Weiss |
| Affiliation: | a US Concrete, 755 Stockton Ave, San Jose, CA 95126, USA b Purdue University, School of Civil Engineering, 550 Stadium Mall Drive, West Lafayette, IN 47906, USA c National Institute of Standards and Technology, Materials and Construction Research Division, Building and Fire Research Laboratory, 100 Bureau Drive, Stop 8615, Gaithersburg, MD 20899-8615, USA d Indiana Department of Transportation, Office of Research and Development, 1205 Montgomery St, West Lafayette, IN, 47906, USA |
| Abstract: | The increased propensity for shrinkage cracking in low water-to-cement ratio (w/c) concrete has inspired the development of new technologies that can reduce the risk of early-age cracking. One of these is internal curing. Internal curing uses saturated lightweight aggregate to supply ‘curing water’ to low w/c paste as it hydrates. Significant research has been performed to determine the effects of internal curing on shrinkage and stress development; however, relatively little detailed information exists about the effects of internal curing on fluid transport properties such as water absorption or diffusivity. This study examines the absorption of water into mortar specimens made with saturated lightweight aggregates (SLWA). These results indicate that the inclusion of SLWA can reduce the water absorption of mortar specimens. This observation was reinforced with electrical conductivity measurements that exhibited similar reductions. |
| Keywords: | Interfacial transition zone Internal curing Lightweight aggregate Sorptivity |
| 本文献已被 ScienceDirect 等数据库收录！ | |