Condor Jaramillo A, Soto Vega J. Evaluation of Physical and Mechanical Properties of Concrete Using Coffee Husk Ash and Ichu as Cement Substitutes. LACCEI [Internet]. 2026 July 27 [cited 2026 Oct. 3];1(14). Available from: https://proceedings.laccei.org/index.php/laccei/article/view/7877