Ismail, Amalina Hanani, Kusbiantoro, Andri, Chin, Siew Choo, Muthusamy, Khairunisa, Islam, Mukhlis and Tee, Kong Fah ORCID: https://orcid.org/0000-0003-3202-873X (2019) Pozzolanic reactivity and strength activity index of mortar containing palm oil clinker pretreated with hydrochloric acid. Journal of Cleaner Production, 242:118565. ISSN 0959-6526 (doi:10.1016/j.jclepro.2019.118565)