SELF-HEALING & SELF-SENSING
NANO-COMPOSITE CONSERVATION MORTARS
Information Leaflet
.png)
Research Papers
1st Research paper
Synthesis and integration of cement-based capsules modified with sodium silicate for developing self-healing cements
This paper focuses on the development and characterization of cement-based macro-capsules, made by the pan-coating technique, consisted of a reactive OPC core and a durable shell produced by the reaction of OPC with sodium silicate (SS). Two types of capsules in the range of 2–5 mm were produced in order to evaluate the effect of SS concentration on the microstructure and mechanical performance of the shell.
Healing assessment revealed that the addition of 20% capsules can reduce the sorptivity coefficient up to 80% after a 28 days healing period.
2nd Research paper
Critical Aspects in the Development and Integration of Encapsulated Healing Agents in Cement and Concrete
.png)
Self-healing cement composites are considered to be an effective solution towards the enhancement of sustainability and service-life of cement and concrete structures, as well as the reduction of repair and maintenance cost. Among the several self-healing technologies, encapsulated healing agents present benefits that include healing of larger cracks and timeless healing potential upon damage. This paper presents a critical overview of the progress made in the development of encapsulated healing agents, along with the main achievements related to their integration in the cement mixtures.
3rd Research paper
Quantitative evaluation of self-healing capacity in cementitious materials
In the present study, the strength recovery of ordinary Portland cement (OPC) mortars because of the autogenic self‐healing mechanism was examined following two experimental approaches: compression tests and ultrasonic pulse velocity (UPV) measurements. The results have shown that the compressive strength values can be correlated with the UPV measurements by an exponential relationship, which suggests that the use of a nondestructive technique, such as UPV, can be a fast and reliable method for the evaluation of damage degree as well as the quantification of healing capacity.
4th Research paper
Effect of processing temperature on growing bamboo-like carbon
nanotubes by chemical vapor deposition
The present article demonstrates a simple, eco-friendly route for the fabrication of carbon nanotube (CNTs) with different morphologies, including the fascinating bamboo-like structures without complex catalyst/support preparation procedures.
5th Research paper
Mechanical and electrical properties of hydraulic lime pastes reinforced with carbon nanomaterials
The aim of the present work is to study a binary paste matrix applied for the development of Cultural Heritage restoration mortars, which incorporates modified carbon nanomaterials as reinforcement. In specific, a mixture of natural hydraulic lime and metakaolin was examined. The incorporation of two different, nanomaterials was studied, namely reduced graphene oxide and carboxylated carbon nanotubes. Both types of nano-reinforcement were added at a concentration of 0.15 wt % of the binder.
.png)
Participation in events
Researchers' Night 2018
Presentation to the public of the technological achievements and solutions utilized for the development of modern multi-functional mortars and grouts for the restoration, structural reinforcement and monitoring of the mechanical stresses of the bearing organism in the architectural monuments and in the traditional buildings.
AKEISTHAI official logo
