Durability assessment of Gerdoi and red travertines from Azarshahr, East Azerbaijan province, Iran

Zalooli, Ahmad; Khamehchiyan, Mashalah; Nikudel, Mohammad Reza

doi:10.1007/s10064-018-1249-y

Cited by 18 publications

(11 citation statements)

References 55 publications

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“…A study with two limestones by Al-Omari et al [34] found mass losses that were slightly above 5% for one of them, but results were clearly affected by the mass of crystallized salt (in several tests, there was mass gain). Zalooli et al [35] reported mass loss around 9% and 3% for two limestone (travertine) types that showed, respectively, granular disintegration and significant fracturing (which might not be associated with marked weight loss as there was no separation from the specimen body).…”

Section: On Sodium Chloride and Seawatermentioning

confidence: 99%

Salt Weathering of Natural Stone: A Review of Comparative Laboratory Studies

et al. 2021

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Natural stone is an important component of historical heritage (buildings and art objects such as sculptures or rock engravings), and it is still widely used in contemporary works. Soluble salts are the main erosive agent in the built environment, and we review here comparative studies that subject the same rock type to testing with different salt solutions. The results mostly support the accepted notion of the major impact of sodium sulphate, although there are some exceptions. The effects of sodium chloride and calcium sulphate deserve specific discussion given field information on the relevance of these specific salts in the built environment. We relate the information collected to the issues of risk assessment (considering both geochemical conditions and salt effects) and conservation interventions (highlighting the interest of tests that do not produce damage to susceptible materials) and present some methodological suggestions to avoid a case study culture.

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Section: On Sodium Chloride and Seawatermentioning

confidence: 99%

Salt Weathering of Natural Stone: A Review of Comparative Laboratory Studies

et al. 2021

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“…The higher resistance to acid solutions of dolomitic limestone, when compared with calcium carbonate sedimentary rocks, has been explained by coarser texture, lower porosity, and higher mechanical strength [57]. Explanations joining mechanical strength and bulk properties of the pore system, such as porosity, water absorption, and capillarity coefficient, with higher values of microporosity have been presented for higher susceptibility to salt crystallization of travertines [81] and pyroclastic rocks, with the variations in this last study being related to welding degree [43]. A comparison of rhyodacite and andesite found the former more susceptible than andesite because of the lower strength, higher porosity, and also higher microporosity [58].…”

Section: Multiple Factorsmentioning

confidence: 99%

Rock Features and Alteration of Stone Materials Used for the Built Environment: A Review of Recent Publications on Ageing Tests

2020

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This work presents a review of recent publications, with publication date between 2017 and 2019, with information on the relation between rock characteristics and the effects of diverse agents associated with alteration of stone materials in the built environment. It considers information obtained from ageing tests performed under laboratory conditions and by exposure to outdoor agents. Several lithological groups were considered, with sedimentary carbonate rocks being the most frequently studied lithotypes and silicate metamorphic rocks being the group with scarcer information. In terms of ageing tests, salt weathering was the most frequent one while there was a noticeable lesser amount of information from tests with biological colonization. The collected data showed the influence of diverse features, from specific minerals to whole-rock properties and the presence of heterogeneities. These information are discussed in the context of formulating a general framework for stone decay.

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“…It is known that salt crystallization plays an important role in the deterioration of the building stones [7, [17][18][19][20][21]. The most important aim of the salt crystallization test is to provide experimental similarity of pressures effects on building stones resulting from salt crystallization.…”

Section: Salt Crystallization Testmentioning

confidence: 99%

Tahribatsız Yöntemlerle Farklı Kireçtaşlarının Mermer Olarak Kullanılabilirliğinin Belirlenmesi

Özvan

Akkaya

Bor

et al. 2018

Çukurova Üniversitesi Mühendislik-Mimarlık Fakültesi Dergisi

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Currently, the usability of building stones is determined by direct physical and mechanical tests. Dry unit weight, water absorption by weight, post-frost weight loss, uniaxial compressive strength and post-frost uniaxial compressive strength values are compared with the limiting values as specified in TS 10449 and ASTM standards in order to be used as a building stone. This study proposes a new method that can be used to evaluate building stones to be used in construction industry by use of Vp and Vs wave velocity values gathered using a nondestructive test method. Within the scope of this study, Vp and Vs wave velocities of building stones with six different textures were measured on 144 original and weathered cube samples of 7x7x7 cm 3. The results from conventional test methods were compared with the proposed nondestructive test method results and a criteria that can be adopted to current relevant standards using Vp and Vs values was proposed. It was concluded that limestones samples with Vp higher than 5000 m/s and Vs higher than 2750 m/s can be used as building stone.

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Durability assessment of Gerdoi and red travertines from Azarshahr, East Azerbaijan province, Iran

Cited by 18 publications

References 55 publications

Salt Weathering of Natural Stone: A Review of Comparative Laboratory Studies

Salt Weathering of Natural Stone: A Review of Comparative Laboratory Studies

Rock Features and Alteration of Stone Materials Used for the Built Environment: A Review of Recent Publications on Ageing Tests

Tahribatsız Yöntemlerle Farklı Kireçtaşlarının Mermer Olarak Kullanılabilirliğinin Belirlenmesi

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