Title:
Monitoring of the E-modulus of 3D Concrete Made with Recycled Aggregates From Very Early Ages to the Hardened State
Author(s):
Claudia Pomahuallca Chahua
Publication:
Web Session
Volume:
ws_S25_ClaudiaPomahuallca.pdf
Issue:
Appears on pages(s):
Keywords:
DOI:
Date:
3/30/2025
Abstract:
The main objective of this research project is to propose and validate a methodology to collect quantitative data about the evolution of concrete E-modulus from very early ages, i.e., immediately after mixing up, to the hardened state (7 days of age). The methodology is composed of concrete penetration tests (ASTM C403/C403M-23) and novel techniques such as oscillatory rheology tests and E-moduli Monitoring through the Ambient Resonance Method (EMM-ARM). The proposed tests will allow monitoring of the concrete E-modulus in the liquid, transition, and hardened states. This methodology will be validated by analyzing two printable concretes: concrete with natural aggregates and concrete with recycled aggregates. The impact of the research project is significant as a useful framework to monitor the E-modulus evolution over time will be validated. This tool can be applied to study the buildability of a wide range of printable concretes and evaluate the effectiveness of chemical admixture for improving it, such as accelerating admixtures and viscosity modifiers.