A "Green" Brick | Clipmarks


	A "Green" Brick

dorine

6-5-2007 9:54 AM

426 views

tags:

invention, green, environment, science, research, discovery

dorine says:

He's sure the brick companies won't like this.

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<div style="margin: 12px 0px; font-family: arial; color: #333333; background: #ffffff; border: solid 4px #e5e5e5; width: 100%; clear: left;"><div class="CM_CTB_Content_Wrap" style="margin: 0px; padding: 0px;background-color: #ffffff;"><div style="border-bottom: solid 1px #dcdcdc; white-space: nowrap; margin-bottom: 8px; background-color: #eeeeee ;background-image: url(http://clipmarks.com/images/source-bg.gif); background-repeat: repeat-x; height: 24px; line-height: 24px; vertical-align: middle; padding-bottom: 4px; color: #666666; font-size: 10px;" ><a href="http://clipmarks.com/clip-to-blog/" title="see clips that are hot right now"><img src="http://content.clipmarks.com/blog_embed/c69f254b-68c5-4084-9367-96d32aa96003/74237CB2-524C-4BAE-9824-595D8F275857/" alt="" width="19" height="19" border="0" style="vertical-align: middle; margin: 0px 4px; display: inline; border: none; float:none;" /></a>clipped from <a title="http://www.popsci.com/popsci/technology/b987485a9f492110vgnvcm1000004eecbccdrcrd.html" href="http://www.popsci.com/popsci/technology/b987485a9f492110vgnvcm1000004eecbccdrcrd.html" style="font-size: 11px;">www.popsci.com</a></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://www.popsci.com/popsci/technology/b987485a9f492110vgnvcm1000004eecbccdrcrd.html"><div align="center"><img src="http://content7.clipmarks.com/blog_cache/www.popsci.com/img/76EF4FDE-4908-4EA9-B40C-8F15ACCD6290" alt="" /></div></blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://www.popsci.com/popsci/technology/b987485a9f492110vgnvcm1000004eecbccdrcrd.html"><DIV>
							<FONT color="#cc6600" class="medium"><STRONG>A new building block made from the pressurized byproducts of coal-power plants saves energy and cuts down on pollutants</STRONG></FONT></DIV></blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://www.popsci.com/popsci/technology/b987485a9f492110vgnvcm1000004eecbccdrcrd.html"><FONT color="#333333" class="medium">Liu, a 70-year-old retired civil engineer with a sober, matter-of-fact demeanor, spent most of his career using hydraulic presses to make industrial freight easier and cheaper to move by squashing it into compact blocks. In 1999 a power plant he was working with gave him some free fly ash, and Liu decided to run it through his hydraulic rig "just to see what would come out." </FONT></blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://www.popsci.com/popsci/technology/b987485a9f492110vgnvcm1000004eecbccdrcrd.html">Liu took the whitish powder, mixed it with water, and stamped it with 4,000 psi of pressure. Within two weeks (or, he later discovered, one day in a 150°F steam bath), the mixture set into blocks as strong as concrete. </blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://www.popsci.com/popsci/technology/b987485a9f492110vgnvcm1000004eecbccdrcrd.html">Meeting federal safety standards, however, took Liu another eight years and $600,000 </blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://www.popsci.com/popsci/technology/b987485a9f492110vgnvcm1000004eecbccdrcrd.html">Finally, he blended in a type of chemical known as an air-entrainment agent</blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://www.popsci.com/popsci/technology/b987485a9f492110vgnvcm1000004eecbccdrcrd.html">extending the lifetime of fly-ash bricks to more than 100 freeze-thaw cycles.</blockquote></div><div style="margin: 0px 6px 6px 4px;"><table style="font-size: 11px;border-spacing: 0px;padding: 0px;" cellpadding="0" cellspacing="0" width="100%"><tr><td style="background:transparent;border-width:0px;padding:0px;">&nbsp;</td><td align="right" style="background:transparent;border-width:0px;padding:0px;width:107px" width="107"><a href="http://clipmarks.com/share/74237CB2-524C-4BAE-9824-595D8F275857/blog/" title="blog or email this clip"><img src="http://content8.clipmarks.com/images/c2b-foot.png" border="0" alt="blog it" width="107" height="17" style="border-width:0px;padding:0px;margin:0px;" /></a></td></tr></table></div></div>

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