Salt Corrosion of Masonry Mortar

Zapoyev, Mikhail; Krivoy, Sergey Aleksandrovich; Belyaeva, Svetlana

doi:10.4028/www.scientific.net/amm.725-726.523

Cited by 1 publication

(1 citation statement)

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“…The effect of moisture, freeze-thaw cycles and environment pollution are the basic reasons for degradation of architectural elements. In the maritime climate, ageing is related to chemical attack of salts [5]. In Nordic regions, moisture and freeze-thaw cycles are the dominant destroying agents, but in the Southern regions, especially in desert regions, erosion weathering and sand abrasive effect dominate.…”

Section: Introductionmentioning

confidence: 99%

Experience of Application High Performance Cement Composites for Creating Durable Sculptural Elements

Šahmenko

Aispurs

Korjakins

2017

ETR

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Traditionally, sculptural and decorative elements of building facades are created from mortar mixes based on lime, gypsum or Portland cement. Generally these materials have porous and permeable structure, which determines their accelerated degradation, especially in the aggressive environment of modern cities. High performance cement composites (HPCC) have been considered for production and restoration of sculptural elements in historical buildings. For this purpose, fine-graded, multi-component and highly workable mixes were elaborated. Mix compositions were modified with micro-fillers, plasticizing and stabilizing admixtures, as well as fibers to improve material ductility and control shrinkage cracking. Basic mechanical properties and durability (such as water absorption, frost resistance) were determined and two types of HPCC were compared (>50 MPa: HPCC and >120 MPa: UHPCC). It has been confirmed that cement composite mixes are characterized by self-consolidating effect, high compressive strength, extremely high resistance versus freezing and thawing cycles and low water absorption. Surface quality was evaluated and initial water absorption (tube tests) were performed for laboratory samples and real sculptural elements after 5 years of exploitation. The results confirmed good potential for using HPCC for creating more attractive and durable architectural shapes and façade elements compared to elements made using traditional cement and lime mortar.

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Section: Introductionmentioning

confidence: 99%