NMR spectroscopy-supported design and properties of air lime-white cement injection grouts for strengthening of historical masonry buildings

Luzar, Jože (author), Padovnik, Andreja (author), Štukovnik, Petra (author), Marinšek, Marjan (author), Jagličić, Zvonko (author), Bokan-Bosiljkov, Violeta (author), Dolinšek, Janez (author)

We present design and properties of combined air lime-white cement structural injection grouts containing 17.5% of air lime, 7.5% of cement and 75% of limestone filler, using white Portland cement. Time evolution of the grout setting process during hydration from early to late stages was monitored by NMR spectroscopy and compared to pure cement-paste control samples. The grout setting is significantly slowed down (by more than 10 days). The compressive strengths of the grouts were found in the range 1.5%2.5 MPa, making them efficient materials for the strengthening of historical masonry buildings in Slovenia.

• Language: English
• Keywords: compressive strength, civil engineering materials, injection grouts, composite lime-cement structural grouts, NMR spectroscopy, NMR hydration curves, compressive strength
• Work type: Scientific work
• Typology: 1.01 - Original Scientific Article
• Organization: FGG - Faculty of Civil and Geodetic Engineering
• Publication status: Published
• Publication version: Author Accepted Manuscript
• Year: 2020
• Number of pages: Str. 1-11
• Numbering: Letn. 250
• PID: 20.500.12556/RUL-116747
• UDC: 691
• ISSN on article: 0950-0618
• DOI: 10.1016/j.conbuildmat.2020.118937
• COBISS.SI-ID: 9109601
• Publication date in RUL: 08.06.2020

Record is a part of a journal

• Title: Construction & building materials
• Shortened title: Constr. build. mater.
• Publisher: Scientific & Technical Press
• ISSN: 0950-0618
• COBISS.SI-ID: 25270784

Licences

• License: CC BY-NC-ND 4.0, Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International
• Link: http://creativecommons.org/licenses/by-nc-nd/4.0/
• Description: The most restrictive Creative Commons license. This only allows people to download and share the work for no commercial gain and for no other purposes.
• Licensing start date: 08.06.2020

Secondary language

• Language: Slovenian
• Keywords: gradbeni materiali, injekcijske mešanice, apneno-cementne konstrukcijske mešanice, spektroskopija NMR, hidratacijske krivulje NMR, tlačna trdnost