Load Carrying Capacity of Mosonry Vaults- Experimental Investigation on Scaled Masonry

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Load Carrying Capacity Of Mosonry Vaults- Experimental Investigation On Scaled Masonry

Load Carrying Capacity of Mosonry Vaults- Experimental Investigation on Scaled Masonry

Abstract

Unreinforced masonry is the construction system of most historic structures and a considerable percentage of existing residential buildings in Egypt. One of the major disadvantages of Load Carrying Capacity Of Mosonry Vaults- Experimental Investigation On Scaled Masonry unreinforced masonry construction is its low resistance to tensile stresses and lateral loads, so there is frequently a need for appropriate reinforcement for such structures.

Their excellent strength-to-weight ratio and easy installation make them an attractive alternative to traditional methods of strengthening. The use of glass fiber composites also makes it as cheap as other techniques.

The least effective technique was using polymer mortar. Strengthening of masonry wall specimens using confining FRP layer was also found to be a very efficient method where the failure load was double that of the unstrengthened specimens. The present research presents experimental investigation of various schemes for strengthening unreinforced masonry wallets and vaults.

Two wallets (W1 and W2) were used as control samples, while the other four were reinforced by 200 mm wide glass FRP rovings. The wallets have been tested in typical indirect tension tests. The pattern of strengthening adopted is similar to that reported in the literature

Conclusion

The experimental results for vaults showed that the ultimate load was increased by using steel reinforcement and placed ferro-cement layers. The use of polymer mortar was the least effective technique.

In addition to its excellent strength-to-weight ratio, easy installation and relatively low cost when using glass fiber composites, the use of externally adhered FRP sheets gave a higher reinforcement level and better failure mode. Their excellent strength-to-weight ratio and easy installation make them an attractive alternative to traditional methods of strengthening. The use of glass fiber composites also makes it as cheap as other techniques.