Cancer Posted June 1, 2011 Report Share Posted June 1, 2011 Re: The Last Word The idea of trying to pre-fab buildings by putting temperature-resistant concrete forms in the way of a lava flow is interesting, too. Though concrete isn't all that temperature-resistant, actually. Quote Link to comment Share on other sites More sharing options...
L. Marcus Posted June 1, 2011 Report Share Posted June 1, 2011 Re: The Last Word ... Sounds idiot proof. Quote Link to comment Share on other sites More sharing options...
Mister E Posted June 1, 2011 Report Share Posted June 1, 2011 Re: The Last Word The idea of trying to pre-fab buildings by putting temperature-resistant concrete forms in the way of a lava flow is interesting' date=' too. Though concrete isn't all that temperature-resistant, actually.[/quote'] The following suffers from the fallacy of laziness on my part: HEAT-RESISTANT CONCRETE "Concrete pavement exposed to high temperatures from aircraft jet blast or from auxiliary power units can suffer damage. If the concrete is wet when the heat is suddenly applied, the production of steam within the concrete can cause spalling. If the concrete is dry or the heat is applied slowly, relatively little permanent damage is done with concrete temperatures up to 400 to 500 degrees Fahrenheit (204 to 260 degrees Celsius). At concrete temperatures above this, water of hydration is lost, and the concrete strength decreases. At about 1,000 degrees Fahrenheit (538 degrees Celsius), compressive strength loss can be 55 to 80 percent of the original strength. At the time of heating, the degree of saturation of the concrete influences the severity of strength loss, and repetitions of heating and cooling cycles further degrade the concrete. At a temperature of around 1,060 degrees Fahrenheit (571 degrees Celsius), silica in the concrete aggregates undergoes a crystal change and expands, and in the range of 1,300 to 1,800 degrees Fahrenheit (704 to 982 degrees Celsius), carbonate aggregates undergo a chemical change. As the concrete surface is heated, a large temperature gradient develops between the surface concrete and the cooler slab depths that can lead to separation and spalling. The behavior of concrete exposed to high temperatures is complex. Typical concrete pavement damage resulting from high temperatures of jet blast includes spalling, aggregate popouts, scaling, cracking, and loss of joint sealant. The time that the concrete is exposed to the jet engine or auxiliary power unit exhaust is critical, since there is considerable thermal lag in concrete." [edit]:& a bit of wiki... "When first erupted from a volcanic vent, lava is a liquid at temperatures from 700 °C to 1,200 °C (1,300 °F to 2,200 °F)." Quote Link to comment Share on other sites More sharing options...
Mister E Posted June 1, 2011 Report Share Posted June 1, 2011 Re: The Last Word I chalk that up to concrete thinking. Quote Link to comment Share on other sites More sharing options...
Cancer Posted June 1, 2011 Report Share Posted June 1, 2011 Re: The Last Word The following suffers from the fallacy of laziness on my part: HEAT-RESISTANT CONCRETE "Concrete pavement exposed to high temperatures from aircraft jet blast or from auxiliary power units can suffer damage. If the concrete is wet when the heat is suddenly applied, the production of steam within the concrete can cause spalling. If the concrete is dry or the heat is applied slowly, relatively little permanent damage is done with concrete temperatures up to 400 to 500 degrees Fahrenheit (204 to 260 degrees Celsius). At concrete temperatures above this, water of hydration is lost, and the concrete strength decreases. At about 1,000 degrees Fahrenheit (538 degrees Celsius), compressive strength loss can be 55 to 80 percent of the original strength. At the time of heating, the degree of saturation of the concrete influences the severity of strength loss, and repetitions of heating and cooling cycles further degrade the concrete. At a temperature of around 1,060 degrees Fahrenheit (571 degrees Celsius), silica in the concrete aggregates undergoes a crystal change and expands, and in the range of 1,300 to 1,800 degrees Fahrenheit (704 to 982 degrees Celsius), carbonate aggregates undergo a chemical change. As the concrete surface is heated, a large temperature gradient develops between the surface concrete and the cooler slab depths that can lead to separation and spalling. The behavior of concrete exposed to high temperatures is complex. Typical concrete pavement damage resulting from high temperatures of jet blast includes spalling, aggregate popouts, scaling, cracking, and loss of joint sealant. The time that the concrete is exposed to the jet engine or auxiliary power unit exhaust is critical, since there is considerable thermal lag in concrete." [edit]:& a bit of wiki... "When first erupted from a volcanic vent, lava is a liquid at temperatures from 700 °C to 1,200 °C (1,300 °F to 2,200 °F)." Yeah, you'd need something with better thermal stability than concrete. Hmm. Aluminum oxide would do, though good luck getting that shaped into something useful as a lava casting mold. Sapphire building blocks, anyone? Quote Link to comment Share on other sites More sharing options...
Mister E Posted June 1, 2011 Report Share Posted June 1, 2011 Re: The Last Word What about emerald building blocks? Just curious. Quote Link to comment Share on other sites More sharing options...
Bazza Posted June 2, 2011 Author Report Share Posted June 2, 2011 Re: The Last Word OK' date=' looks like free-floating Jupiter-mass planets (which have a mass of about 1/300 that of the Sun) are about twice as numerous as main sequence stars, on an object-per-cubic-parsec basis, between here and the Galactic Center. The reference is Nature Vol 473, pp. 349–352, (19 May 2011). They don't do much speculation about what that means for planet-formation theories, though the number is consistent with the idea that the planets all originally formed with stars and were subsequently ejected.[/quote'] Not paying their rent' date=' then? Slackers?[/quote'] The second Big Bang? Quote Link to comment Share on other sites More sharing options...
L. Marcus Posted June 2, 2011 Report Share Posted June 2, 2011 Re: The Last Word No, those guys aren't slackers, but nerdy geeks. Quote Link to comment Share on other sites More sharing options...
Bazza Posted June 2, 2011 Author Report Share Posted June 2, 2011 Re: The Last Word You mean just geeks then Quote Link to comment Share on other sites More sharing options...
L. Marcus Posted June 2, 2011 Report Share Posted June 2, 2011 Re: The Last Word Oh no, those two categories does not necessarily overlap. Quote Link to comment Share on other sites More sharing options...
Cancer Posted June 2, 2011 Report Share Posted June 2, 2011 Re: The Last Word Quite so. Nerdy guys hardly ever bite the heads off live chickens. Quote Link to comment Share on other sites More sharing options...
L. Marcus Posted June 2, 2011 Report Share Posted June 2, 2011 Re: The Last Word Hardly ever. Quote Link to comment Share on other sites More sharing options...
Cancer Posted June 2, 2011 Report Share Posted June 2, 2011 Re: The Last Word * (roars of inarticulate fury) * Quote Link to comment Share on other sites More sharing options...
L. Marcus Posted June 2, 2011 Report Share Posted June 2, 2011 Re: The Last Word How's the articulation now, then? Quote Link to comment Share on other sites More sharing options...
Cancer Posted June 2, 2011 Report Share Posted June 2, 2011 Re: The Last Word Better. Had to reconstruct something that was lost to timeout (reference: Cranky Thread), but I did get it posted (reference: DM dice thread in General Roleplaying). Hope I got my point across. Quote Link to comment Share on other sites More sharing options...
L. Marcus Posted June 2, 2011 Report Share Posted June 2, 2011 Re: The Last Word I'll go check. Quote Link to comment Share on other sites More sharing options...
Cancer Posted June 2, 2011 Report Share Posted June 2, 2011 Re: The Last Word OK, the graduating seniors have officially been pizzaed. Quote Link to comment Share on other sites More sharing options...
L. Marcus Posted June 2, 2011 Report Share Posted June 2, 2011 Re: The Last Word Mmmm, reward! Quote Link to comment Share on other sites More sharing options...
Tim Posted June 3, 2011 Report Share Posted June 3, 2011 Re: The Last Word eitehr that or turned into the pizzas for a hunger cannibalistic staff. Quote Link to comment Share on other sites More sharing options...
Bazza Posted June 3, 2011 Author Report Share Posted June 3, 2011 Re: The Last Word Oh no' date=' those two categories does not necessarily overlap.[/quote'] Yeah they do. Quote Link to comment Share on other sites More sharing options...
Bazza Posted June 3, 2011 Author Report Share Posted June 3, 2011 Re: The Last Word Quite so. Nerdy guys hardly ever bite the heads off live chickens. And geeks do? Quote Link to comment Share on other sites More sharing options...
L. Marcus Posted June 3, 2011 Report Share Posted June 3, 2011 Re: The Last Word Carnival geeks, yes. The original and best! Quote Link to comment Share on other sites More sharing options...
Bazza Posted June 3, 2011 Author Report Share Posted June 3, 2011 Re: The Last Word Oh, so you are one of those. Quote Link to comment Share on other sites More sharing options...
L. Marcus Posted June 3, 2011 Report Share Posted June 3, 2011 Re: The Last Word Just striving for self-improvement. Quote Link to comment Share on other sites More sharing options...
Cancer Posted June 3, 2011 Report Share Posted June 3, 2011 Re: The Last Word I'm not sure where this ought to go, so I'll put it here and several other places. The National Academies Press put all their PDFs up as free downloads yesterday. Now, NAP isn't going to be a rich source of gaming material, but there may be stuff that HEROphiles would want to grab at that price. Quote Link to comment Share on other sites More sharing options...
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