X-ray CT monitoring of macro void development in mortars exposed to sulfate attack
Abstract
This study reports the results of nondestructive monitoring of macro void developments in mortars manufactured with both ordinary Portland cement and sulfate resistant cement. Two types of curing were utilized; tap water curing and another curing environment that contains 5% Na2(SO4) solution. Being the primary objective of this study, macro void developments of the mortar specimens were monitored by X-ray Medical Computerized Tomography. Compressive strength tests and water absorption tests were conducted on specimens that were kept in both curing environments for a duration of 560 days. Data analyses yielded consistent results among the three tests used in this experimental study. Macro void ratios of mortars decreased at the beginning of experiments for a certain period; afterwards, macro void ratios increased. The objective of this study was accomplished as anticipated since X-CT image analysis was able to nondestructively monitor macro void development process in cement mortars. Copyright © 2018 Techno-Press, Ltd.
Source
Computers and ConcreteVolume
21Issue
4Collections
Related items
Showing items related by title, author, creator and subject.
-
Monitoring macro voids in mortars by computerized tomography method
Tekin I.; Birgul R.; Ozgur Yaman I.; Gencel O.; Yilmaz Aruntas H. (Elsevier B.V., 2015)This study aims to investigate the use of ground pumice powder (PP) in cement production and to monitor void developments in mortars by X-ray Computerized Tomography (CT) which is a nondestructive test method. PP-blended ... -
High temperature resistance of boron active belite cement mortars containing fly ash
Gökçe H.S. (Elsevier Ltd, 2019)Boron allowing stability of reactive belite phase in clinker production enhances neutron shielding capability of cement. In the study, neutron attenuation factor of boron active belite cements at various fly ash introduction ... -
Engineering properties of medium-to-fine sands injected with microfine cement grout
Mollamahmutoglu M.; Yilmaz Y. (2011)This article investigates the penetrability of microfine cement suspensions prepared with Rheocem 900 with and without superplasticizer additive into various graded fine-to-medium sands into which chemical grout permeation ...