Impact of thermal transfer on hydration heat of a Soundless Chemical Demolition Agent

Files in This Item:
Access to this item has been restricted by the copyright holder until:2020-10-30
File Description SizeFormat 
Impact of thermal transfer on hydration heat of a Soundless Chemical Demolition Agent.pdf14.73 MBAdobe PDFDownload    Request a copy
Title: Impact of thermal transfer on hydration heat of a Soundless Chemical Demolition Agent
Authors: Laefer, Debra F.
Natanzi, Atteyeh S.
Zolanvari, S. M. Iman
Permanent link:
Date: 30-Oct-2018
Online since: 2019-03-27T10:35:43Z
Abstract: This paper explores thermal transfer effects in Soundless Chemical Demolition Agents (SCDA). In a 10°C water bath, quadrupling the volume of SCDA in a pipe accelerated peak hydration onset and resulted in a 700% increase in expansive pressure and a 20% increase in volumetric expansion. An equivalent sample in a constant temperature chamber showed an almost 5°C greater hydration heat than in the water bath, which resulted in a six-fold expansive pressure difference after 4 days of testing and an order of magnitude more pressure in the first 24 h, thereby demonstrating limitations of previous SCDA experimental work and providing a temperature-based reason for discrepancies between large-scale testing and manufacturers’ predictions. Since most construction projects have scheduling requirements, understanding how to achieve sufficiently high pressures within a single work shift is important for evaluating the field viability of SCDAs on a particular project.
Funding Details: Enterprise Ireland
Science Foundation Ireland
Type of material: Journal Article
Publisher: Elsevier
Journal: Construction and Building Materials
Volume: 187
Start page: 348
End page: 359
Copyright (published version): 2018 Elsevier
Keywords: Soundless Chemical Demolition AgentExpansive cementAmbient temperatureBorehole diameterNon-expansive demolition agentThermal transferBristarHeat of hydrationVolumetric expansionExpansive pressure
DOI: 10.1016/j.conbuildmat.2018.07.168
Language: en
Status of Item: Peer reviewed
Appears in Collections:Civil Engineering Research Collection

Show full item record

Citations 50

Last Week
Last month
checked on May 19, 2019

Google ScholarTM



This item is available under the Attribution-NonCommercial-NoDerivs 3.0 Ireland. No item may be reproduced for commercial purposes. For other possible restrictions on use please refer to the publisher's URL where this is made available, or to notes contained in the item itself. Other terms may apply.