Hydromagnesite development in magnesian lime mortars

Dheilly, Rose-Marie; Bouguerra, Ahmed; Beaudoin, B.; Tudo, J.; Quéneudec, M.

doi:10.1016/s0921-5093(99)00085-4

Cited by 53 publications

(31 citation statements)

References 14 publications

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“…As it has already been pointed out, contrary to what it is noticed in several works of specialised literature [6][7][8]13,25], that it has not been able to determine the presence of hydromagnesite Table 4, together the semiquantitative results of XRD.…”

Section: Preparation and Study Of Simulated Standardsmentioning

confidence: 78%

“…Surprisingly, the previously cited works [7,8] have not shown problems in the determination of HY by XRD in samples with important contents of calcite.…”

Section: Xrd Studiesmentioning

confidence: 88%

“…Botha and Strydom [11] state as conclusion in their work that HY only can be prepared from magnesium hydroxide if the experimental conditions are chosen carefully (and with a CO 2 flow of 190 mL min -1 ). Also the work by Dheilly et al [7] has shown HY obtained after curing in a CO 2 atmosphere, and Caceres and Attiogbe [12] have produced HY after recarbonation of Mg(OH) 2 -from calcined dolomite -in a CO 2 excess.…”

Section: Introduction and Objectivesmentioning

confidence: 98%

“…Certain discrepancies in the specialised literature have also motivated this work. The controversy is about the occurrence of phases originated during the setting of this type of mortars (for example hydromagnesite, HY): whereas Bruni et al [6] and Dheilly et al [7] have indicated that the carbonation of a dolomitic lime (that is, containing magnesium hydroxide -brucite, Mg(OH) 2 ) can originate usually hydromagnesite, and Vecchio et al [8] have determined the presence of HY in Italian dolomitic mortars (11 th and 14 th centuries), Newton and Sharp [9] have only found magnesite and brucite in some dolomitic mortars and Alessandrini et al [10] have not determined hydromagnesite in the binder fraction from some dolomitic mortars. Botha and Strydom [11] state as conclusion in their work that HY only can be prepared from magnesium hydroxide if the experimental conditions are chosen carefully (and with a CO 2 flow of 190 mL min -1 ).…”

Section: Introduction and Objectivesmentioning

confidence: 99%

See 3 more Smart Citations

Study of ancient dolomitic mortars of the church of Santa Marı́a de Zamarce in Navarra (Spain): comparison with simulated standards

et al. 2003

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Section: Preparation and Study Of Simulated Standardsmentioning

confidence: 78%

“…Surprisingly, the previously cited works [7,8] have not shown problems in the determination of HY by XRD in samples with important contents of calcite.…”

Section: Xrd Studiesmentioning

confidence: 88%

Section: Introduction and Objectivesmentioning

confidence: 98%

Section: Introduction and Objectivesmentioning

confidence: 99%

See 2 more Smart Citations

Study of ancient dolomitic mortars of the church of Santa Marı́a de Zamarce in Navarra (Spain): comparison with simulated standards

et al. 2003

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“…In the present work, special conditions have not been applied to the specimens, the possible formation of these different magnesium carbonates or the brucite crystallization could affect to the mechanical behavior of the mortar [15].…”

Section: Introductionmentioning

confidence: 99%

Mechanical properties of masonry repair dolomitic lime-based mortars

Lanas

Bernal

Bello

et al. 2006

Cement and Concrete Research

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180 different mortars made with a dolomitic lime and different aggregates were prepared in order to be used in restoration works. This paper focuses on the effect of technological variables on pore structure and mechanical properties of dolomitic lime-based mortars. Compressive and flexural strengths of the specimens were discussed according to curing time, binder:aggregate ratios, attributes of the aggregates and porosity, at long-term tests.A strong increase in the strength of mortars has been found after 365 curing days as compared to 28 curing days. The strength has been mainly attributed to the portlandite carbonation, because no significant changes have been observed in the brucite. However, higher strengths than similar aerial lime-based mortars led to think in other mechanism which increases the strength: the calcite formation through a reaction of dedolomitization (alkali carbonate reaction, ACR) and the brucite crystallization were discussed.The pore structure has presented a significant influence on the strength. More binder amounts mean more strength due to the higher values of open porosity, which allows the carbonation process. The aggregate characteristics have been correlated with the strength and porosity. Limestone and angle-shaped aggregates, reducing large pores, cause a strength increment.

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Historical materials from the post-Cistercian abbey in Kamieniec Ząbkowicki (southwestern Poland)—application of mineralogical methods for identification of source of raw materials

Bartz

Kierczak

Gąsior

et al. 2015

Archaeol Anthropol Sci

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In this paper, we use a set of methods applied for geosciences to reveal the provenance of raw materials and historical aspects of technology of lime production from the post-Cistercian church (southwestern Poland). Two types of building stones (mica schists and sandstones) and two groups of mortars, related with two different construction phases (Gothic and Baroque), were used for construction of the church façade. Principal difference between binding materials involves the presence of Mg-rich phase within Baroque mortars as a result of carbonation of a dolomitic lime whereas Gothic mortars are devoid of hydromagnesite. Mineral composition of the fillers of both mortars is similar, suggesting the same origin represented by local eluvium. Binders of studied mortars are composed of calcite and/or hydromagnesite and rich in lime lumps suggesting incomplete calcination. Studied mortars are weathered which is manifested by presence of gypsum. However, there is no evidence of commonly occurring Mg-rich secondary phases within Baroque mortar probably due to higher solubility of these salts comparing to gypsum. Mineralogical study combined with archeological and geological information enables us to indicate potential sources for the studied building materials. Metamorphic rocks, prevailing within the façade, come from abandoned quarries located in the closest vicinity of the church, whereas sandstones were acquired from the deposits located at a distance of tens of kilometers from the Kamieniec Ząbkowicki. Raw materials used for lime burning were gathered from Przeworno (Gothic mortars) and Złoty Stok area (Baroque mortars) located approximately 25-30 and 12 km from studied church.

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Hydromagnesite development in magnesian lime mortars

Cited by 53 publications

References 14 publications

Study of ancient dolomitic mortars of the church of Santa Marı́a de Zamarce in Navarra (Spain): comparison with simulated standards

Study of ancient dolomitic mortars of the church of Santa Marı́a de Zamarce in Navarra (Spain): comparison with simulated standards

Mechanical properties of masonry repair dolomitic lime-based mortars

Historical materials from the post-Cistercian abbey in Kamieniec Ząbkowicki (southwestern Poland)—application of mineralogical methods for identification of source of raw materials

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