Economical desert sand engineered cementitious composites (DS-ECCs) using a mixture of cement, fly ash, local sand, water, low-cost PVA fibers, and chemical additives were developed, aiming for further enhancement in ductility toughness. The mechanical behavior DS-ECCs two samples (from Mu Us Tengger deserts, China) was determined uniaxial tension/compression tests three-/four-point bending tes...