Retrofitting unreinforced masonry buildings with a strain-hardening cement-based composite to enhance seismic resistance M Kotze (Univ. Stellenbosch); G C van Rooyen (Univ. Stellenbosch); G P A G van Zijl (Univ. Stellenbosch) 01.06.2019 Earthquake Engineering, Masonry and Historical Contructions