what is nano concrete?
553992
here is something:\nwww.mmsconferencing.com/nanoc/\npdf/finalcircular.pdf\nand here is something else:\nNano-concrete is an example of a non-exotic material made better through nanotechnology and coming to market.  The ability to see and analyze material at the nano-scale means that concrete can now be  manufactured in such a way as to enable 3-inch thick highway bridge decks.  There are 150,000 obsolete bridges in the U.S. alone.  Nano-concrete can enable them to be rebuilt more cheaply and faster, and to be stronger and longer lasting.  The key impediment will be standard aversion to new ideas in the construction industry.\nanyway, google it for more info
1118504
that's what it takes for the concrete to "cure".
1136258
That doesn't exist. There is, however, nanotechnology. Read all about it...
965678
Nanotechnology is the engineering of functional systems at the molecular scale. This covers both current work and concepts that are more advanced. In its original sense, 'nanotechnology' refers to the projected ability to construct items from the bottom up, using techniques and tools being developed today to make complete, high performance products. \nNanotechnology is often referred to as a general-purpose technology. That's because in its advanced form it will have significant impact on almost all industries and all areas of society. It offers better built, longer lasting, cleaner, safer, and smarter products for the home, for communications, for medicine, for transportation, for agriculture, and for industry in general. \n\nImagine a medical device that travels through the human body to seek out and destroy small clusters of cancerous cells before they can spread. Or a box no larger than a sugar cube that contains the entire contents of the Library of Congress. Or materials much lighter than steel that possess ten times as much strength. \n\nWhen K. Eric Drexler (right) popularized the word 'nanotechnology' in the 1980's, he was talking about building machines on the scale of molecules, a few nanometers wide—motors, robot arms, and even whole computers, far smaller than a cell. Drexler spent the next ten years describing and analyzing these incredible devices, and responding to accusations of science fiction. Meanwhile, mundane technology was developing the ability to build simple structures on a molecular scale. As nanotechnology became an accepted concept, the meaning of the word shifted to encompass the simpler kinds of nanometer-scale technology. The U.S. National Nanotechnology Initiative was created to fund this kind of nanotech: their definition includes anything smaller than 100 nanometers with novel properties.
285963
Altair Nanoteechhnologies (ALTI) has a nano-product that is used for water and air treatment.  That woould include water supplies, waste water and swimming pools, etc.
496915
Check out nanotechnology, the science and technology of building electronic circuits, devices, etc., from single atoms and molecules. \n\nThe science of construction in which dimensions of the components are less than 100 nanometers (nm; 10−9 of a metre), this is 100,000 times thinner than a human hair.\n\n The term was introduced by Nomo Taniguchi in 1974 to refer to mechanical machining methods. \n\nTop-down nanotechnology concentrates on manufacturing on this very small scale. Techniques such as photo lithography are used to make transistors for integrated circuits; the smaller the transistor, and the closer together they are packed, the higher the processing power of the chip. An Intel Pentium chip has about 1·5 million transistors. A specialized Dynamic Random Access (DRAM) chip carries 64 million transistors. \n\nBottom-up nanotechnology builds with individual atoms. \n\n\nThis area of new technology may hold the most promise on the horizon.
645895
A monolithic concrete floor is poured completely before finished, and hardens as a single concrete structure.   The exceptions to "monolithic" would be a structure that has concrete footings upon which a wood or concrete floor is added later.  There is no "adding later" when you do a monolithic slab ... any stiffening beams or footings are ONE with the floor, and vica-versa.
612809
A precast concrete frame(pcf) is a frame casted at a place other than the place where it has to be fixed.Sometimes due to certain reasons ie shortage of space,raw material,congenial atmosphere etc. a pcf is better in durability,stability and provides human comfort,environmental efficiency and is aesthetic also.
159338
Nanotechnology is a hybrid science combining engineering and chemistry. Atoms and molecules stick together because they have complementary shapes that lock together, or charges that attract. Just like with magnets, a positively charged atom will stick to a negatively charged atom. As millions of these atoms are pieced together by nanomachines, a specific product will begin to take shape. The goal of nanotechnology is to manipulate atoms individually and place them in a pattern to produce a desired structure. \n\nSome upcoming technology you might be interested in: Pervasive computing, mobile computing, biotechnology
13646
Molecular nanotechnology ("MNT") is an anticipated manufacturing technology that would allow precise control and positional assembly of molecule-sized building blocks through the use of nano-scale manipulator arms. Molecular nanotechnology is usually considered distinct from the more inclusive term "nanotechnology", which is now used to refer to a wide range of scientific or technological projects that focus on phenomena or properties of the nanometer scale (around 0.1-100nm). Nanotechnology is already a blossoming field, but molecular nanotechnology - the goal of productive, molecular-scale machine systems - is still in the preliminary research stage.\n\nNanotechnology was first introduced in 1959, in a talk by the Nobel Prize-winning physicist Richard Feynman, entitled "There's Plenty of Room at the Bottom". Feynman proposed using a set of conventional-sized robot arms to construct a replica of themselves, but one-tenth the original size, then using that new set of arms to manufacture an even smaller set, and so on, until the molecular scale is reached. If we had many millions or billions of such molecular-scale arms, we could program them to work together to create macro-scale products built from individual molecules - a "bottom-up manufacturing" technique, as opposed to the usual technique of cutting away material until you have a completed component or product - "top-down manufacturing".\n\nFeynman's idea remained largely undiscussed until the mid-80s, when the MIT-educated engineer K. Eric Drexler published "Engines of Creation", a book to popularize the potential of molecular nanotechnology. Because MNT would allow manufacturers to fabricate products from the bottom up with precise molecular control, a very wide range of chemically possible structures could be created. Since MNT systems could put every molecule in its specific place, molecular manufacturing processes could be very clean and efficient. Also, because every little bit of matter in an molecular nanotechnology system would be part of a nano-scale manipulator, nanotechnological systems could be far more productive and maintain much higher throughputs than modern manufacturing techniques, which use macro-scale manipulators to fabricate products.\n\nTo initiate an MNT revolution would require an "assembler" - a reprogrammable nano-scale manipulator capable of creating a wide range of molecular structures, including a complete copy of itself. The first assemblers will only function effectively in lab-controlled environments, such as a vacuum. The advent of self-replicating molecular nanomachines could quickly lead to "desktop nanofactories", tabletop appliances that consume modest amounts of power and contain the software required to manufacture an interesting range of useful products. The arrival of MNT would revolutionize wide sectors of human activity, including manufacturing, medicine, scientific research, communication, computing, and warfare. When full-blown molecular nanotechnology will arrive is currently unknown, but many experts foresee its arrival between 2010 and 2020.\n\n\nNANOTECHNOLOGY INTRODUCTION\nWhat is Nanotechnology?\nLast Updated: Tuesday, 03-May-2005 16:46:15 PDT \nThe term "nanotechnology" has evolved over the years via terminology drift to mean "anything smaller than microtechnology," such as nano powders, and other things that are nanoscale in size, but not referring to mechanisms that have been purposefully built from nanoscale components. See our "Current Uses" page for examples. This evolved version of the term is more properly labeled "nanoscale bulk technology," while the original meaning is now more properly labeled "molecular nanotechnology" (MNT), or "nanoscale engineering," or "molecular mechanics," or "molecular machine systems," or "molecular manufacturing
48832
Nano means "dwarf" in Greek and deals with technology (nanotech) on the truly small acale, like one billionth.\n\nNanotechnology tries to find new uses for material that is often highly pure and put together at the electron-microscopic scale.\n\nFor examply carbon Buckyballs are molecules that consist of 60 carbon atoms arranged by vapor deposition into what looks like tiny soccer balls.  It may be possible for these to hold and release medications, etc.\n\nSome say that when putting atoms together using nanotech, it is like adding new elements to the periodic table, thus predicting how they will react with other materials.\n\nMother Nature has always used her own nanotech to put together amazing substances (consider the diamond formed perhaps sixty miles down in a volcanic lab!).  Now we hope to do amazing things too in our much "coooler" labs.  Albany, NY is fast becoming a new center for the study and application of nanotechnology.  One company (Daystar) plans to start manufacturing cheaper film photovoltaic cells that could provide all the power we need if we shingled all our buildings with them.
973442
It is the cross disciplinary study of merging nanotechnology and genetics; i.e using nanostructure to create nanometer size machine. For example, a nanosize red blood cell would be used to cure some ailments.
474521
Nanotech engineering.
729463
Robin Williams "nano--nano"
1174103
"nano" is  a word like "dance".  Aside from size, there are many different expressions of it. For instance, getting a string of DNA to bend on command is a recent accomplishment in nano-tech.  Does that have an immediate application to medicine? No. Does it tell us a little about the behavior of DNA? Yes. This world can change faster now than any other time in history, so I'm not about to make a hard decision on the future.\n\nYou get a great big quantum MAYBE from me on your question.
379808
It's an hydration reaction wherein the water molecules attach themselves to the cement. This causes bonds to form between the cement molecules and the other materials, such as sand and stones.
473314
The Assyrians and Babylonians used clay as cement in their concretes. The Egyptians used lime and gypsum cement. In the Roman Empire, concrete made from Quicklime, pozzolanic ash/pozzolana and an aggregate made from pumice was very similar to modern portland cement concrete. In 1756, British engineer John Smeaton pioneered the use of portland cement in concrete, using pebbles and powdered brick as aggregate. In the modern day, the use of recycled/reused materials as concrete ingredients is gaining popularity due to increasingly stringent environmental legislation. The most conspicuous of these is pulverized fuel ash, recycled from the ash by-products of coal power plants. This has a significant impact in reducing the amount of quarrying and the ever-attenuating landfill space.