Featured Research

from universities, journals, and other organizations

Cements that self-repair cracks and store latent heat energy?

Date:
March 2, 2011
Source:
Basque Research
Summary:
Cement (and derivatives thereof) is one of the materials most commonly used in construction, given its good performance at low cost. Over recent years, one part of scientific and technological research is aimed at incorporating additional functions into these materials. Researchers have studied the possibility of adding capacities to the cement such as the self-repair of cracks as well as the storing of latent heat energy.

Cement (and derivatives thereof) is one of the materials most commonly used in construction, given its good performance at low cost. Over recent years, one part of scientific and technological research is aimed at incorporating additional functions into these materials. Specifically, Doctor Idurre Kaltzakorta studied the possibility of adding capacities to the cement such as self-repair of cracks as well as storing latent heat energy.

Related Articles


Her PhD thesis, undertaken at Tecnalia's Construction Unit, was presented at the University of the Basque Country (UPV/EHU) and entitled: Synthesis of silica microcapsules encapsulating different organic compounds for addition in the cement paste.

As the title of her research suggests, Dr Kaltzakorta created silica (it is, for instance, the base of glass) microcapsules with organic material inside, the idea being to provide the cement with new functions. She opted for two types of organic materials, each corresponding to one of the two added features mentioned above. Thus, on the one hand, the microcapsules were filled with various epoxy resins (used in the manufacture of adhesives), to provide the cement with the capacity for the self-repair of cracks. On the other, phase change materials were encapsulated. These are materials which absorb or free a great quantity of heat on the phase of the material changing (from solid to liquid or liquid to gas and vice-versa), and enable the storage of latent heat energy in the cement material.

Sol-gel and emulsion

Ms Kaltzakorta studied the synthesis of the encapsulated material, opting for synthesising microcapsules by combining sol-gel chemistry with emulsion technology. This route enabled the encapsulation of organic material, difficult with other routes, under mild temperature and pressure conditions.

Once the microcapsules were obtained, the thesis analysed the effect of the addition of these to the cement matrix, to verify the viability of the technique. With this in mind, Ms Kaltzakorta used a number of techniques with which the features of the new cement material could be studied, techniques such as X-ray tomography, scanning electron microscopy, mechanical testing and differential scanning calorimetry.

In conclusion, the thesis shows the viability of the development of a new generation of cements capable of the self-repair of cracks as well as storing latent heat energy, based on the application of silica microcapsules with various organic materials. In fact, the research for developing the new cement with the capacity for self-sealing of cracks has given rise to a patent. Moreover, according to Ms Kaltzakorta, the proposal presented in this thesis is a commitment to sustainability. On the one hand, getting the cement material to self-repair increases the useful life of the structures. On the other, using a material capable of regulating the temperature within the buildings will enhance their energy efficiency.


Story Source:

The above story is based on materials provided by Basque Research. Note: Materials may be edited for content and length.


Cite This Page:

Basque Research. "Cements that self-repair cracks and store latent heat energy?." ScienceDaily. ScienceDaily, 2 March 2011. <www.sciencedaily.com/releases/2011/03/110302075957.htm>.
Basque Research. (2011, March 2). Cements that self-repair cracks and store latent heat energy?. ScienceDaily. Retrieved March 30, 2015 from www.sciencedaily.com/releases/2011/03/110302075957.htm
Basque Research. "Cements that self-repair cracks and store latent heat energy?." ScienceDaily. www.sciencedaily.com/releases/2011/03/110302075957.htm (accessed March 30, 2015).

Share This


More From ScienceDaily



More Matter & Energy News

Monday, March 30, 2015

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Solar Impulse Departs Myanmar for China

Solar Impulse Departs Myanmar for China

AFP (Mar. 30, 2015) Solar Impulse 2 takes off from Myanmar&apos;s second biggest city of Mandalay and heads for China&apos;s Chongqing, the fifth flight of a landmark journey to circumnavigate the globe powered solely by the sun. Duration: 00:42 Video provided by AFP
Powered by NewsLook.com
Internet Giants Drive Into the Electric Vehicle Space

Internet Giants Drive Into the Electric Vehicle Space

Reuters - Business Video Online (Mar. 30, 2015) Internet companies are looking to disrupt the auto industry with new smart e-vehicles, but widespread adoption in Asia may not be cured by new Chinese investments. Pamela Ambler reports. Video provided by Reuters
Powered by NewsLook.com
Inspectors Found Faulty Work Before NYC Blast

Inspectors Found Faulty Work Before NYC Blast

AP (Mar. 27, 2015) An hour before an apparent gas explosion sent flames soaring and debris flying at a Manhattan apartment building, injuring 19 people, utility company inspectors decided the work being done there was faulty. (March 27) Video provided by AP
Powered by NewsLook.com
Facebook Building Plane-Sized Drones For Global Internet

Facebook Building Plane-Sized Drones For Global Internet

Newsy (Mar. 27, 2015) Facebook on Thursday revealed more details about its Internet-connected drone project. The drone is bigger than a 737, but lighter than a car. Video provided by Newsy
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:

Strange & Offbeat Stories


Space & Time

Matter & Energy

Computers & Math

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins