The deterioration of a particular material depends on how and to what extend it interacts with its surrounding. Thus, durability is definitely one of the main concerns in designing as it directly relates to the maintenance of the structural integrity of a structure throughout its service life.
Malaysia's tropical climate can pose hazard to many concrete structures as high temperature and high humidity can affect the chemical interaction between concrete's alkaline property and its surrounding. In this case, concrete durability is related to its ability to withstand exposure to condition such as UV radiation, temperature, rain and wind.
In many advanced countries, epoxy resins concrete are used in many applications such as aircraft, aerospace, and composite reinforcing concrete products which includes repair and appraisal works in civil engineering particularly as reinforcement in concrete.
The resin is formed by the chemical reactions of epoxy groups with amines, alcohols, phenols and others.
Epoxy resin concretes exposure to four season's climate has been investigated and significant effect was found on the strength properties of the concretes. There is a need to understand the behaviour of epoxy resin concrete under Malaysia climatic stress. When the behaviour of its strength is understood, design durability and repair works for structures with epoxy resins in this region can be predicted.
The objectives of this research, therefore, are to construct a correlation between atmospheric exposure and wet-dry condition with the durability of epoxy resins concrete; to predict durability from the permeability, porosity, and shrinkage testing; and to compare atmospheric exposure with laboratory conditions.
This research is conducted by Idawati Ismail, Mohd Ibrahim Safawi M Zaid and Azida Rashid of Universiti Malaysia Sarawak and Abdul Aziz Ismail of Universiti Teknologi Malaysia.
Move over, Superman! NIST method sees through concrete to detect early-stage corrosion
27.04.2017 | National Institute of Standards and Technology (NIST)
Control of molecular motion by metal-plated 3-D printed plastic pieces
27.04.2017 | Ecole Polytechnique Fédérale de Lausanne
More and more automobile companies are focusing on body parts made of carbon fiber reinforced plastics (CFRP). However, manufacturing and repair costs must be further reduced in order to make CFRP more economical in use. Together with the Volkswagen AG and five other partners in the project HolQueSt 3D, the Laser Zentrum Hannover e.V. (LZH) has developed laser processes for the automatic trimming, drilling and repair of three-dimensional components.
Automated manufacturing processes are the basis for ultimately establishing the series production of CFRP components. In the project HolQueSt 3D, the LZH has...
Reflecting the structure of composites found in nature and the ancient world, researchers at the University of Illinois at Urbana-Champaign have synthesized thin carbon nanotube (CNT) textiles that exhibit both high electrical conductivity and a level of toughness that is about fifty times higher than copper films, currently used in electronics.
"The structural robustness of thin metal films has significant importance for the reliable operation of smart skin and flexible electronics including...
The nearby, giant radio galaxy M87 hosts a supermassive black hole (BH) and is well-known for its bright jet dominating the spectrum over ten orders of magnitude in frequency. Due to its proximity, jet prominence, and the large black hole mass, M87 is the best laboratory for investigating the formation, acceleration, and collimation of relativistic jets. A research team led by Silke Britzen from the Max Planck Institute for Radio Astronomy in Bonn, Germany, has found strong indication for turbulent processes connecting the accretion disk and the jet of that galaxy providing insights into the longstanding problem of the origin of astrophysical jets.
Supermassive black holes form some of the most enigmatic phenomena in astrophysics. Their enormous energy output is supposed to be generated by the...
The probability to find a certain number of photons inside a laser pulse usually corresponds to a classical distribution of independent events, the so-called...
Microprocessors based on atomically thin materials hold the promise of the evolution of traditional processors as well as new applications in the field of flexible electronics. Now, a TU Wien research team led by Thomas Müller has made a breakthrough in this field as part of an ongoing research project.
Two-dimensional materials, or 2D materials for short, are extremely versatile, although – or often more precisely because – they are made up of just one or a...
28.04.2017 | Event News
20.04.2017 | Event News
18.04.2017 | Event News
28.04.2017 | Medical Engineering
28.04.2017 | Earth Sciences
28.04.2017 | Life Sciences