Evaluating in situ thermal transmittance of green buildings masonries—A case study

This article is written by Francesco Asdrubali , Francesco D’Alessandro, Giorgio Baldinelli and Francesco Bianchi from University of Perugia, Department of Engineering, Via G. Duranti 65, 06125 Perugia, Italy. The topic of the article is «Evaluating in situ thermal transmittance of green buildings masonries—A case study». Authors touch upon the problem of determination of the thermal properties of buildings and correction of design of energy efficient constructions. The article begins with abstract where the main problem is given and consist of 5 main parts including and introduction and conclusion.

In introduction authors give general information about thermal insulation, types of walls and their insulating capacity. Also in introduction they tell about their declarations, issued on the basis of current regulations, report values obtained by laboratory measurements in 1991, 1994, 2010, 2011 and 2012. Therefore, in situ thermal transmittance measurements become strategic to evaluate the correctness of masonry installation and to determine its behavior during the use of the building.

In part «Methodology for in situ thermal transmittance measurements» authors give us the information about main parameters to assess building efficiency and show formulas, graphs and histograms.

The part «Description of the tested walls» describes buildings that selected as case studies and 6 walls for tests. It’s shown the table 1 «Stratigraphy and description of the six case studies», table 2 «Calculated and measured thermal transmittance values» and picture of installation of the sensors on a tested wall.

In the 4^th part «Results of in situ thermal transmittance measurements» authors tell about measurements were performed following the procedures given by standards and results; each wall was monitored for at least seven days. Internal conditions were kept constant by the floor heating systems of the apartments.

The conclusion of the article summarizes the topic. The main purpose and importance are given in introduction, «Methodology for in situ thermal transmittance measurements», «Description of the tested walls» and «Results of in situ thermal transmittance measurements» by paraphrasing. Also it tells about benefits of experiments and what they allow.

During the research authors used various source of information including but not limited to extracts from journals as well as publications. Overall, the structure of this article is coherent and concise which makes it easy to follow even for readers with small knowledge of the topic.

Analysis 6

Induction healing of fatigue damage in asphalt test samples

This article is written byAlessandro Menozzi, Alvaro Garcia, Manfred N. Partl, Gabriele Tebaldi, Philipp Schuetz

The qualifications of the author'sare engineers of civil constructions andBuilding Materials

Audience of this article are students, master's students, professors, scientists and engineers of constructions and mechanics.

This article is aboutAsphalt mixture suffers damage by many factors such as traffic loads, weather, oxidation, UV light, etc, which may be the cause of cracks. Initially, cracks in asphalt mixture have a micrometric size, but they may grow very fast due to traffic circulation and environmental stresses. For this reason, preventive maintenance treatments must be used to extend the life of asphalt pavements.

Sources that author's used are:Symposiums, International and National Journals.

The author's statment of purposeto have a first insight of when and for how long asphalt mixture under fatigue damage has to be induction-heated to recover part of its original properties.

Methods used in the articleare encapsulated rejuvenators[4], or induction healing [5–8]. To use this last method, electrically conductive and magnetically susceptible particles (e.g. steel) must be added during the mixing process [8].

Date: 2016-01-03; view: 711