Unusual building materials

Unusual building materials

Сообщение HainanWel.com(e)! » 11 ноя 2012, 04:36

Self-healing bio-concrete and asphalt can repair the walls and roads- VIDEO

Monday, 05 November 2012 11:34


Scientists from the Technical University of Delft began testing a new type of bio-organic concrete and asphalt, which can independently fix of cracks on the surface, as this type of concrete and asphalt contains a special bacteria, that in contact with water produces a limestone, which fills the cracks. According to researchers from the Technical University of Delft in the Netherlands, the new technology will be able to quickly rid the streets of the pits, and the city budget will not need to allocate any funds for road maintenance. Self-healing materials for bio-organic concrete and asphalt, which were created by scientists of Technical University of Delft, contains a specific granules of bacteria of the genus Bacillus spores and calcium lactate, which is a nutrient, which is necessary for the rapid growth of bacteria. Bacteria are dormant in the bio-bio-concrete and asphalt, while a crack into the asphalt or concrete become wet, which dissolves the nutrients and cause of the bacteria to produce a calcite, the main component of limestone, which fills all the cracks and restores the shape of the structures of concrete or asphalt, the bacteria fix as major defects and microcracks about 0.2 millimeters, THE VIDEO: http://hainanwel.com/en/unusual-world/2 ... crete.html
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Re: Unusual building materials

Сообщение HainanWel.com(e)! » 14 май 2014, 12:56

Plastic can recover as body tissue- VIDEO PDF Print E-mail
Tuesday, 13 May 2014 14:00
Looking for a smooth plastic sheet lying in one of the laboratories of the University of Illinois (University of Illinois), it is impossible to guess that recently gaping hole in it . The researchers were able to develop a material with an incredible ability to regenerate. Previously, self-healing materials could fight only with microscopic cracks and holes. But U.S. scientists created on plastic heals itself impressive " injured " . " We have shown that non-living system of synthetic materials can regenerate like some living biological systems ," - says one of the authors of the study chemistry professor Jeffrey Moore (Jeffry S. Moore). Creating a self-healing plastic was made possible by the previous development team - a special vascular material. Formed using fibers , the researchers created a material with a network of capillaries . Scientists drew inspiration from watching biological circulatory system. Two neighboring capillary, running parallel to each other, filled with special chemicals that flow in case of damage " vessels ." The two liquids are mixed and form a gel which covers the gap caused by injury , filling the cracks and holes . This is similar to how our circulatory system platelets and protein fibrin blood clot . Then, the gel hardens , becoming a sturdy polymer , reducing the mechanical strength of plastic. " Vascular service allows sum to place a large amount of deformation therapeutic agents and cover significant areas of damage - says professor of materials science and engineering Sottos Nancy (Nancy Sottos). - Moreover, this approach provides several cycles of restoration if the damage was repeated " . During the experiment, the gel filled the gap width exceeding 35 millimeters in 20 minutes , and the mechanical function of the material recovered by more than half to three hours . " In order to successfully carry out the regeneration , we had to overcome a number of external factors , including gravity , - says the head of a research professor of aerospace engineering at Scott White (Scott White). - Reactive liquid that we use to gel quickly enough , so that he begins to harden immediately. If this will not happen , just pour out the liquid beyond the damaged area. Education gel retains reactants in the liquid state , and since the material is still solid enough , the recovery process can be continued by bringing more fluid into the hole . " The team demonstrated its regeneration system on two famous types of plastics : thermoplastics . Researchers also have learned to "tune " the chemical reactions to control the rate of formation and the rate of solidification of the gel ( depending on the type of damage .) For example, when hit by a bullet material except for the central hole formed yet and the series of radial cracks . Therefore, the reaction of the gel can be slowed to a chemical has penetrated into all the cracks until it solidifies . Scientists believe that this technology is self-healing plastic, similar to the biological healing, can be introduced into production in the very near future. A simple and effective method of making vascular materials already exist, now need to optimize the composition of regenerating chemicals for different types of materials. This ability can be very useful for commercial goods ( for example, a scratched bumper car could recover himself for a few minutes after the accident ) . But more importantly the invention to those parts and products which are difficult to repair or replace, for example, those used in the aerospace industry or in the bottom of deep wells. Since the present work was partially funded by the U.S. Air Force , it is possible that the American army sooner or later will have at its disposal , such as self-healing shields for military, VIDEO:
http://ss.hainanwel.com/en/unusual-worl ... cover.html
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Сообщение HainanWel.com(e)! » 24 май 2014, 21:50

Created material, the surface of which is impossible to moisten-VIDEO
Saturday, 24 May 2014 13:17
A research team from Brigham Young University (BYU), led by Professor Julie Crockett, created a superhydrophobic surface, which is almost impossible to wet. This surface can be used in almost any product - from plumbing fixtures and medical devices to vehicles and different gadgets . It is also expected, that the new method for maximum waterproof material for a long time in the future will protect the hull of ships and aircraft. Unable to obtain superhydrophobic surface using only one or Teflon wax. Need to give it some structure. Water in contact with the surface, like a ball bounces off it. Drops under the influence of artificial structures are going to balls until the water has gone with a waterproof surface. In addition, the new technology, according to scientists, can be used to produce more clean and efficient energy. Power plants generate energy by burning coal or natural gas. When using the condensation products resulting from combustion - can reduce the production costs, VIDEO:
http://hwww.hainanwel.com/en/unusual-wo ... isten.html
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Сообщение HainanWel.com(e)! » 12 июн 2014, 11:53

Stronger than steel are biodegradable wood pulp fibers- VIDEO
Thursday, 12 June 2014 03:00
A group of scientists from the Royal Institute of Technology in Stockholm was the first who created wood pulp fibers. The new material can be used as a biodegradable replacement for many substances used today in the industry, such as polyester, fiberglass or metal. The uniqueness of the material is the ease method thereof: for "cooking" biodegradable fibers requires water, wood pulp and salt. The team took the individual cellulose fibers and break them into their component strands called fibrils. Then again every thread tied with others, but not in their natural configuration, and in a special way, giving the fiber strength of wire rope. In previous studies, scientists have successfully separated to separate the cellulose fibers and fibrils are even used to strengthen their composite materials. But the reconfiguration of the fiber structure previously could not be anyone that makes Swedish pioneers. "We have learned from natural fibrils of cellulose fibers, and then gathered them again in a very strong thread. Resulting fiber has a diameter of 10-20 micrometers, that is, it is almost thick as a human hair," - says the study's lead author Fredrik Lundell. Fibril assembly after mixing with water and sodium chloride was carried out using a special device "focusing flow" (flow-focusing), similar to an extrusion die in 3D-printer. Careful adjustment of pressure when applying flow has created a solid sequential fiber fibrils. The strength and stiffness of the final product depends not only on the level of pressure during extrusion, but also on the angle at which fibrils are connected to the fiber. For example, if the fibrils are oriented parallel to each other, the material will rigid and inflexible, and if they are joined at an angle relative to each other, the material will be more resilient and flexible. Authors methods argue that their biodegradable fibers can replace cotton in the textile industry, or even an alternative to glass filaments used in the manufacture of fiberglass. The new material is more eco-friendly, which gives him a distinct advantage over peers. "Our task today is to scale up the production process. We must keep up the fiber to produce on an industrial scale and do it much faster than it is today," - concludes Lundell in a press release. About technology commercialization speech does not go, but in the absence of visible defects biodegradable fibers can become part of daily production process in many industries. Detail the method of construction ultraprochnyh wood fibers is described in an article in Nature Communications, VIDEO: http://hainanwel.com/en/unusual-world/4 ... steel.html
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