psi

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gravyval Participant Join Date: Apr 2008 Location: 36 degrees north lattitude Posts: 4	psi 04/07/2008 1:16 PM
	i am currently in an r&d stage of a new type of building material, that is i am working in my garage and back yard. ther is a test for adobes where you pile ten on top of one supported by bricks on top of concrete,this is a simplified test for tensile strength as well as compressive. the product i am working on will be built two ways by pouring into forms much like a pumice crete and also as blocks. i posted a question about what size of sample i should use and about a design idea for a container which can rest atop the sample which i can pour sand until failure, then weigh the sand. once my mixture is in the building code ballpark, i am also looking for an interested qualified party to do actual lab testing for pay or as a business venture. i thank the people that answered my question the first time and hope to hear from you again g.valencia taos n.m usa __________________ If you can't dazzle them with brilliance, baffle them with bullshit. no piensas en chingar porque en chingar te chingas
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ozzb Guru Join Date: Mar 2007 Location: Rosedale, Maryland USA Posts: 5197 Good Answers: 266	#1 Re: psi 04/07/2008 6:49 PM
	For the test I would use a shop press. Steel plates can be made to distribute the pressure over a known area. __________________ Life is not a journey to the grave with the intention of arriving in a pretty, pristine body but rather to come sliding in sideways, all used up and exclaiming, "Wow, what a ride!"
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gravyval Participant Join Date: Apr 2008 Location: 36 degrees north lattitude Posts: 4	#2 In reply to #1 Re: psi 04/08/2008 12:18 AM
	should the steel plates be the same dimension as the sample? i.e. a 6"x6" cu in have a 6x6 plate on top and bottom of the press? should there be a cushion between the plates as not to have two brittle products against each other? remember i am trying to get in ballpark of building codes while maintaining superior insulative value. i totally appreciate your input and look forward to your educated opinions as we bring this to a marketable and viable superior building material that our environment and future generations can enjoy!q1`Q1` __________________ If you can't dazzle them with brilliance, baffle them with bullshit. no piensas en chingar porque en chingar te chingas
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EnviroMan Guru Join Date: Nov 2007 Location: Gone to Alabama with my banjo on my knee... Posts: 5595 Good Answers: 20	#3 In reply to #2 Re: psi 04/08/2008 11:24 AM
	You'd start with what's called a 'cube test'. Make 2"x2"x2" cubes, let cure for 28 days (ave. cure to max. strength) and use shop press to find the material failure pressure. This will determine the material strength as is done for concrete and grout. I have a QC friend who will check the ACI specs to see what the test, if any, would be for the finished product, but that may just be an engineering calculation. More answers as I get them. Hope this helps, and cheers! __________________ Veni, vidi, video - I came, I saw, I got it on film.
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gravyval Participant Join Date: Apr 2008 Location: 36 degrees north lattitude Posts: 4	#4 In reply to #3 Re: psi 04/08/2008 5:08 PM
	thanks for your reply i think were getting on the right track. keep me posted as you get more info. the bulk of my mixture is gypsum based, do i still need a 28 day cure? __________________ If you can't dazzle them with brilliance, baffle them with bullshit. no piensas en chingar porque en chingar te chingas
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EnviroMan Guru Join Date: Nov 2007 Location: Gone to Alabama with my banjo on my knee... Posts: 5595 Good Answers: 20	#5 In reply to #4 Re: psi 04/08/2008 5:52 PM
	Good question for which I have no immediate answer. The 28 days is for typical concrete or grout, as that's when the hydration (setting) is about maxed out and most (80+%) of the maximum strength is achieved. Will see what I can find out. In the meantime, you can start on the 2"³ molds... __________________ Veni, vidi, video - I came, I saw, I got it on film.
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RCE Guru Join Date: Dec 2007 Location: California Posts: 2363 Good Answers: 63	#6 In reply to #5 Re: psi 04/09/2008 7:43 PM
	Contact a geotechnical testing laboratory, they will have compressive, tensile and flexural strength testing equipment and can provide the proper ASTM testing for the materials.
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EnviroMan Guru Join Date: Nov 2007 Location: Gone to Alabama with my banjo on my knee... Posts: 5595 Good Answers: 20	#7 In reply to #6 Re: psi 04/10/2008 8:11 AM
	Easily enough done - we have two of them under contract on this current project... Plus our own QC inspectors... __________________ Veni, vidi, video - I came, I saw, I got it on film.
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EnviroMan (3); gravyval (2); ozzb (1); RCE (1)

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