Lightweight Concrete Strength Testing - Perlite 2:1 Mix Ratio
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- Опубликовано: 12 сен 2024
- Watch as we put the next lightweight concrete block in our Lightweight Concrete Showdown to the test. We are testing the strength to weight ratio of a 2:1 perlite to portland cement test panel. After curing to its full strength for a full month it is ready to test to its breaking point! And we like to break things, for science of course.
We have made lightweight concrete panels, each 28 inches long by 1 inch thick, with different mix ratios and lightweight aggregates to find out just how much weight they can bear before cracks and fails. To compare lightweight concrete mixes based on strength performance, we first made and tested a regular (full weight) concrete / mortar control test block. Full strength concrete will be stronger than every lightweight concrete mix design but how close can we get the strength to weight ratio is very useful information.
Do any of the lightweight mix recipes hold up to the results of the full strength block? See the results of this strength to weight ratio testing and how it compared to the full strength control block as well as the other lightweight concrete test panels by watching the full Lightweight Concrete Showdown series:
Making Full Strength Mortar Control Test Block - • Lightweight Concrete S...
Concrete Strength Testing - Control Block 3:1 Mix Ratio - • Concrete Strength Test...
Making Lightweight Concrete With Perlite (4:1) - • Making Lightweight Con...
Lightweight Concrete Strength Testing - Perlite 4:1 Mix Ratio - • Lightweight Concrete S...
Making Stronger Lightweight Concrete With Perlite (2:1) - • Making Stronger Lightw...
Making High-Strength Lightweight Concrete - • Making High-Strength L...
Mixing Vermiculite Concrete (3:1 mix) - • Mixing Vermiculite Con...
Lightweight Concrete Strength Testing - 3:1 Vermiculite Mix Ratio - • Lightweight Concrete S...
Mixing Concrete With Vermiculite (6:1) - • Mixing Concrete With V...
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Definitely enjoying seeing the results of each mixture. Are you ever going to test with structure reinforcement’s with mixtures? Rebar, wire, Etc.?
Loving these. Looking forward to the final comparison edit to see how they all compare.
Great test! I think this makes sense, actually. Portland cement isn't all that strong, by itself. It's the mix with the aggregates that make it stronger. Sand and gravel aren't just added to make the cost lower. Although that's a part of it, there's a point where the mix doesn't get any stronger.
Here's the test I would love to see, just to bring it into perspective for folks that might not have the engineering experience. Find the best strength/weight ratio mix from your 1" tests. Then, pour whatever that is into a panel with the same length and width, but with the thickness needed to make it weigh the same as the 3:1 sand mix. My bet - that's going to be about 2.5" think, and it's going to end up supporting about 4 times the weight of the 1" concrete. Then if you want, make another version, with some 1x1" cutouts, running long ways, in the bottom of the panel. So that it looks like the underside of a pre-cast bridge deck, kind of. Then, I bet you get a panel that's 20-30% lighter than normal concrete, more or less, and maybe 2x as strong.
Good video, your experiments helped me to build my pizza oven and I appreciate that. I have another question, I'm trying to build firebricks for the bottom of the pizza oven, I'm looking something that I can replace with the time but durable to the use, fire etc., I found some videos that are mixing stucco, and sand but they crumble after some fires in the oven, do you have any idea or materials?
Good content! Can you sum it up and present table with all your dicferent results plus explanation?
Good content! Can you sum it up and present a table with all your different results plus explanation?
I do intend to do this but also this is a long term project I am working on. I intend to build and test more mix designs before I summarize the results.
@@creatingconcretei am still dont get it why always do a bearing test like in a flat surface w/o rebar as reinforced or even having a large spam... if you do the same test with a square o rectabgular material will be diffeent resualt... ypu should do a compresion test over a falt surface instead... its like you use foamumlar NDX foam ypu will get diferent point of view...
I would be very interested in a compressive strength test. Also, have you considered testing a shredded expanded polystyrene mix?
I have not considered but I am not opposed to trying different mix formulations and aggregates
try more perlite and less concrete. wrape the whole thing with fiber cloth. Should be much lighter and stronger
you measure it the same way three times, obviously it is the same.
If you substitute some of the perlite for sand you may get a better result
Can you "dry pour" your mixes? Using vermiculite, pearlite, granulated styrofoam?
Hello sir. Please Can you help me on an investigation of the bond behavior of the lightweight concrete beam?
What is the volume of block?
can it replace drywall?
I would not. I am confident you would not get a professional quality finish and cracking would certainly be an issue.