Intrinsic self-stressing and low carbon Engineered Cementitious Composites (ECC) for improved sustainability

Engineered Cementitious Composites (ECC) is an emerging cementitious composite material with ultra-high ductility. However, its higher cement dosage limits greenness and leads to concerns drying shrinkage. In this research, ECC utilizing limestone calcined clay (LC3) calcium sulphoaluminate (CSA) investigated, focusing on minimizing the material's embodied carbon while enhancing durability intrinsic self-stressing functionality. A criterion theoretically established experimentally verified. X-ray diffraction patterns reveal ettringite quantity that modulates initial expansion later expansion-reversal of LC3-CSA-ECC support a persistent mechanism. has lower (64%) footprint similar energy compared conventional concrete. When combined advantage (tiny crack, high ductility 5.5%, function), low holds promise as sustainable repair lowers operational in civil infrastructure.