A precast segmental pier reinforced with both conventional steel bars and high-strength steel bars according to one or more embodiments of the present invention includes a footing, a segmental pier, longitudinal bars and unbonded post-tensioned tendons, characterized in that: the segmental pier is comprised of one or more precast segments, the longitudinal bars are comprised of both the conventional steel bar and the high-strength steel bar, connecting the footing and the segmental pier together with unbonded post-tensioned tendons to form an entire pier.

A new civil infrastructure construction scheme is provided that is capable of meeting various objectives, including reducing climate change, addressing labor shortage issues, and enhancing construction productivity. Methods of forming load-bearing structures include placing a first reusable load-bearing element adjacent to a second reusable load-bearing element. The first reusable load-bearing element is fixed with respect to the second reusable load-bearing element without any adhesive or mortar. The first reusable load-bearing element and the second reusable load-bearing element respectively have a compressive strength of greater than or equal to about 25 MPa. The first and second reusable load-bearing elements optionally may be formed by additive manufacturing with a printable cementitious composition, such as an engineered cementitious composite.

A precast segmental pier reinforced with both conventional steel bars and high-strength steel bars according to one or more embodiments of the present invention includes a footing, a segmental pier, longitudinal bars and unbonded post-tensioned tendons, characterized in that: the segmental pier is comprised of one or more precast segments, the longitudinal bars are comprised of both the conventional steel bar and the high-strength steel bar, connecting the footing and the segmental pier together with unbonded post-tensioned tendons to form an entire pier.