120.55
ICV
8
MNiSW
 
 

Effect of dedolomitization on the physico-mechanical properties of mortar - comparative studies

 
1
Instytut Techniki Budowlanej
Mining Science 2012;134(Special Issue 41):3–13
ABSTRACT
This paper presents research carried out on carbonate aggregate – on three dolomite aggregates, one dolomitic limestone and one limestone – reference. Their physical and mechanical properties, structure and chemical composition were determined, and then made from them a samples of mortar and alkali reactivity tests were performed according to the AAR-2 method (developed by RILEM), keeping the reference samples in water. On the samples after the alkali–reactivity test and on the reference samples the comparative studies were performed, including compressive strength, porosity, phase composition by X-ray diffraction and thermal analysis. Based on the results of tests it can be said that with more advanced dedolomitization reaction, the porosity of mortar and a decrease in compressive strength after testing is less.
CORRESPONDING AUTHOR
Joanna Babińska   
Instytut Techniki Budowlanej, 00-611 Warszawa, ul. Filtrowa 1
 
REFERENCES (9):
1. Bilans zasobów kopalin i wód podziemnych w Polsce wg stanu na 31 XII 2010 r., PIG-PIB, Warszawa 2011.
2. DENG M., TANG M., Mechanism of dedolomitization and expansion of dolomitic rocks, Cement and Concrete Research, 23, 1993.
3. GÓRALCZYK S., Reaktywność alkaliczna kruszyw węglanowych, Prace Naukowe Instytutu Górnictwa PWr. nr 108, Wrocław 2004.
4. GÓRALCZYK S., KUKIELSKA D., Jakość kruszyw, Górnictwo i geologia XV, Prace Naukowe Instytutu Górnictwa PWr. 132, Wrocław 2011.
5. GRATTAN-BELLEW P.E., MITCHELL L.D., MARGESON J., MIN D., Is alkali-carbonate reaction just a variant of alkali–silica reaction ACR=ASR?, Cement and Concrete Research, 40, 2010.
6. KATAYAMA, T., The so-called alkali–carbonate reaction (ACR) – Its mineralogical and geochemical details, with special reference to ASR, Cement and Concrete Research, 40, 2010.
7. LIANG,T., MINGSHU T., Correlation between reaction and expansion of alkali–carbonate reaction, Cement and Concrete Research, 25, 1995.
8. RILEM TC 106-AAR (AAR-2) Detection of potential alkali reactivity of aggregates – The ultra accelerated mortar bar test, Draft method, 2002.
9. SWENSON E.G., GILLOTT J.E., Alkali–carbonate rock reaction, Highway Research Record, 45, 1964.
Copy url
Share
 
 
Sign up for email alerts
 
eISSN:2353-5423
ISSN:2300-9586