Journal article
Microbial damage mitigation strategy in cementitious materials exposed to calcium chloride
Construction & building materials, v 195, pp 1-9
20 Jan 2019
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
Deterioration of concrete pavements in the United States has increased over the past decade. This damage is triggered by two possibilities: classic freeze-thaw behavior, as well as the formation of calcium oxychloride (CAOXY) that originates from calcium chloride (CaCl2) in deicing salt. CAOXY is an expansive phase leading to damage and cracking in the cementitious matrix. This study investigates use of alkaliphilic, spore-forming bacteria to mitigate formation of CAOXY. Cementitious samples were made with ordinary portland cement (OPC); OPC combined with nutrients; and OPC combined with bacteria and nutrients. Low-temperature differential scanning calorimetry, thermogravimetric analysis, sorption analyzer, and acoustic emissions were used to quantify the amount of CAOXY, calcium hydroxide, microstructural change, and damage caused by CaCl2 salt in the cementitious samples, respectively. It was observed that the addition of bacteria changes in the micropore structure of cement pastes and significantly reduces the formation of CAOXY. (C) 2018 Elsevier Ltd. All rights reserved.
Metrics
Details
- Title
- Microbial damage mitigation strategy in cementitious materials exposed to calcium chloride
- Creators
- Maissoun Ksara - Drexel UniversityRayna Newkirk - Drexel UniversitySaeed Keshani Langroodi - Drexel UniversityFadi Althoey - Drexel UniversityChristopher M. Sales - Drexel UniversityCaroline L. Schauer - Drexel UniversityYaghoob Farnam - Drexel University
- Publication Details
- Construction & building materials, v 195, pp 1-9
- Publisher
- Elsevier
- Number of pages
- 9
- Grant note
- Drexel University
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Civil, Architectural, and Environmental Engineering; Materials Science and Engineering
- Web of Science ID
- WOS:000457659600001
- Scopus ID
- 2-s2.0-85056455150
- Other Identifier
- 991019168832204721
UN Sustainable Development Goals (SDGs)
This publication has contributed to the advancement of the following goals:
InCites Highlights
Data related to this publication, from InCites Benchmarking & Analytics tool:
- Web of Science research areas
- Construction & Building Technology
- Engineering, Civil
- Materials Science, Multidisciplinary