4.6 Article

Flexural Strengthening of Stone Masonry Walls Using Textile-Reinforced Sarooj Mortar

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MATERIALS
卷 16, 期 16, 页码 -

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MDPI
DOI: 10.3390/ma16165703

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strengthening; historical; stone masonry; TRM; textile

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This research investigates the deterioration of historical buildings in Oman and explores an innovative strengthening method using local materials. The experimental study shows that using basalt textile-reinforced sarooj mortar (TRM) effectively strengthens stone masonry walls, increasing their resistance to bending moments and deformations.
The majority of historical buildings and structures in Oman were built using unreinforced stone masonry. These structures have deteriorated due to ageing of materials, environmental degradation, and lack of maintenance. This research investigates the physical, chemical, and mechanical properties of local building materials and the results of an experimental study on the out-of-plane bending effectiveness of an innovative strengthening method applied to existing masonry walls. The technique consists of the application of a basalt textile-reinforced sarooj mortar (TRM) on one face of the walls. Bending tests of masonry wall samples (1000 mm width, 2000 mm height, and 350 mm depth) were carried out on one unreinforced specimen and three different cases of reinforced specimens. The performance of unreinforced and reinforced specimens was analyzed and compared. The strengthened specimens were able to resist moments of out-of-plane bending 2.5 to 3 times greater than those of unreinforced specimen (160-233% increase). Moreover, the strengthened walls were able to sustain higher deformations (deflections) than the unreinforced specimen ranging from 20 to 130%. The results showed that using TRM was effective for the out-of-plane strengthening of stone masonry using a local material (sarooj) that is compatible with existing stone masonry building materials.

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