Ultra-High Performance Concrete (UHPC) is a new generation of concrete characterized by its high strength, durability, and stiffness. Autogenously shrinkage represents one the issues UHPC that occurred at early ages. It occurs particularly during first 48 hours after casting. This paper focuses on ways can be depended to mitigate autogenously obtain outstanding mechanical properties UHPC. The r...

Abstract The performances of expanded clay aggregate and wood ash as internal curing water reservoirs were studied in the mortar phase a hypothetical high performance concrete with low water-to-binder ratio. two materials substituted 15 30% sand volume. Two different binders, Portland cement high-volume fly blended cement, used. compressive strength volume stability mortars sealed air-drying co...

Concrete inherently contains pores and microcracks that can adversely impact its mechanical properties long-term durability. However, characterising is difficult due to their complex, multiscale three-dimensional (3D) nature. This paper presents an evaluation of 3D imaging techniques for induced by different mechanisms. Seven cement pastes, mortars concretes subjected drying shrinkage, autogeno...

Magnesium silicate hydrate (M-S-H) cement, a type of green building material, has poor volume stability (i.e., large shrinkage deformation), which limits its application. As new admixture, the behavior shrinkage-reducing admixture (SRA) in M-S-H cement not been studied. Therefore, this research, effect SRA on properties system was evaluated. The mechanism investigated by surface tension measure...