Let's Talk Building Systems | Doug Lacy Interview |

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11 ай бұрын

Let's Talk Building Systems | Doug Lacy Interview | #aircreteharry #buildingsystem #interview #talk #knowledge #information #buildingoptions
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Пікірлер: 55

@AircreteHarry 3 ай бұрын

Welcome All, Like our work? Please support us by LIKING & Commenting on our videos. Thank you very much - Subscribe & Enjoy! - Mr. & Mrs. Aircrete-Harry

@nobreighner 10 ай бұрын

Want to see more projects by Doug Lacy!

@ShambhalaVillage 11 ай бұрын

Really enjoyed our talk, Harry. Very excited about doing more projects and getting others to learn how to do the free-form framing and shell mix for their own homes. Doug

@off-griddomeliving8018 11 ай бұрын

Great Interview, indeed! 🌱 Lots of Knowledge & Advice 👍

@MichaelHonsinger 11 ай бұрын

Thank you Doug: that was very fascinating!

@AircreteHarry 11 ай бұрын

Great connecting with you, Doug. Awesome, looking forward to it, indeed. Great interview 👍 Here is to spreading the Knowledge!

@rongray4118 8 ай бұрын

I did not know that you and Harry had produced this video!! Awesome!!

@Pierrericheart 11 ай бұрын

very cool to see the two of you sharing ideas. I was just asking Doug about his mix and aircrete for the insulation and low and behold you two are having a pow wow online. Doug is super friendly and generous with his acquired knowledge and as are you. Thanks for making your discoveries and progress available.

@AircreteHarry 11 ай бұрын

Awesome!! You are very welcome, brother - I appreciate your great feedback! Glad you enjoyed the video 👍

@earthnhand 11 ай бұрын

Awesome info here! Reactive powder concrete recipe: portland cement, fly ash, silica flume, titanium slag, steel fiber, quartz sand, quartz powder, and superplasticizers. Optional other ingredient is rice husk ash. Rpc's improve microstructure, particle packing, toughness, and durability, self healing! Wow, and have been around since the 90's. Fascinating!

@ShambhalaVillage 10 ай бұрын

It is much better to replace the flyash with an ultra refined flyash that is 80 % 3 microns or less. That alone reduces water demand. If you check out my response to Michael Hosinger above it gives a little more details on the history. Also there is a recent recipe and mixing sequence in the comments on my folding machine video. Boral Materials LLC really contributed to the Ductal Mix design style that eliminates the need for the hard-to-get items. Getting that proper ratio of the special refined flyash and silica fume is the key to making the same consolidation. A small percent of sand blasting sand (quartzite) also really allows all those nano particles to react between the larger particles that do not ever react. Even the cement only reacts on the cement particle surface. Consistency of compressive strength is achieved by a mixing technique for minimum hydration. You have to respond to rheology measurements you make while mixing, timing how long it takes for the mix to stop moving. The metal fibers should be replaced with the PVA and Forta Ferro at max dose 2 percent cement to allow a better range of movement. The foam really helps with those nano and pozzolanic reactions while preventing chemical expansion damage. The foam increases impact resistance but weakens the compressive strength but not near as much as it should because the foam binds with extra gel water and supports the micro crystals around the bubbles because they are closed-cell and spherical. Yeah, it is really cool stuff and the six gallon batches really open up possibilities for furniture, art and ultra thin designs based upon sturdy fluid curves and light frame that is perfect reinforcing compliment to the shell material. Going to try roof compartment for my daughter's van but there are some non-moving dwelling type workshops coming up.

@rongray4118 8 ай бұрын

Harry - great to see you are speaking with Doug. I had the heart attack in February and I am getting my strength back... trying to get things back on track next year. Hope you are Fantastic as well!!

@AircreteHarry 8 ай бұрын

Glad to know you overcame the serious condition - may you get your Health back & continue to enjoy Life, healthy & in good spirit. Appreciate your hopeful words - thank you & glad to have you here, brother!!

@rongray4118 8 ай бұрын

@@AircreteHarry ❤ thank you, Harry! Good to be here!! I'll catch back up to you and Doug and see what the two of you are cooking up!! LOL!! Blessings!

@AircreteHarry 8 ай бұрын

@@rongray4118 Awesome, brother!! Thank you for your feedback!! Enjoy the new video - posted today. Very good information. 👍

@johnweidemann3148 10 ай бұрын

Thank you so much for bringing great minds together

@AircreteHarry 10 ай бұрын

Welcome to the channel John 👍 Glad to have you join! You are very Welcome - we greatly appreciate your meaningful words!! Thank you! Just posted a NEW video on the channel - Enjoy!

@SustainableCraig 10 ай бұрын

Loving these interviews! Doug's work is really interesting. I'm gonna have to check out one of his workshops.

@AircreteHarry 10 ай бұрын

Awesome, feel free to reach out to Doug. Glad you love the videos! NEW one out today - Enjoy!

@SkyGizmmo 11 ай бұрын

As always brilliant innovation. Manage the water and everything else takes care. Bullet and fire proof.

@AircreteHarry 11 ай бұрын

Yes! Great option, indeed 👍 👍

@LiteShaper1 11 ай бұрын

Fantastic conversation! Amazing these column structures avoid the need for traditional foundation and uses less cement!

@AircreteHarry 11 ай бұрын

Welcome to the channel 👍 Thank you very much for your great feedback, greatly appreciate you! - Glad you enjoyed the video! Yes, it is such a great option for building. The more choices we have, right.

@ShambhalaVillage 11 ай бұрын

A column foundation can be designed for long term stability in most situations, including sand, swamp, clay and coastline. Using a retaining wall to level a thinshell-capped pad, one that extends well beyond the interior of the building, frees up infinite possibilities for entry wall design for the Core Monolith Flex-Shell Pavilion. This also protects those columns from erosion and protects the building from flood damage caused by soil heave from saturated clay expanding. This kind of damage was a significant portion of the damage costs after the Houston floods, according to our engineer brother Mike in Houston. Channeling runoff into secondary pads (gardens) around the main one or into high-quality check damns in nearby ravines, reverses erosion in the building area, builds soil, supports diversity and allows precious water to be stored below the soil in a way it can be used. All massive Reinforced Concrete designs, weather it is a slab, wall, truss or column, has a thinshell reactive powder equivalent that uses vastly less material to achieve the same structural goal, but the alternate provided in thinshell for retaining walls makes more enduring eco-friendly foundations and cutting-edge erosion control methods more cost accessible.

@danaharden6283 11 ай бұрын

Helical Piers are much quicker than columns and common machinery can be adapted to drive them in. Also remember to use non-conductive rebar!!

@AircreteHarry 11 ай бұрын

Welcome to the channel Dana 👍 Helical Piers are great - depending on the soil conditions. In our area, for example, is too much rock to be able to apply this system. Overall yes - great option, I agree 👍

@rongray4118 8 ай бұрын

Love this video Harry!! Thank you so much for sharing thoughts and keeping the flow going!!

@AircreteHarry 8 ай бұрын

Thank you very much, Ron - my pleasure, Sir! Glad you enjoyed the content - feedback like yours makes it all worth it!!

@MichaelHonsinger 11 ай бұрын

Fascinating! I’m going you have to research this reactive powder cement! Thanks Harry!

@off-griddomeliving8018 11 ай бұрын

Pleasure!! Happy to introduce great & different varieties of building techniques - the more options we have, the more possibilities! Glad you enjoyed the video! 👍

@AircreteHarry 11 ай бұрын

You are very Welcome!!

@ShambhalaVillage 11 ай бұрын

The Ductal mix design by a person from Lafarge in France, the ones who brought us Portland cement, was the first. Their mix was a 26,000 psi mix that really hit the scene in the late 90’s. Their super compact consolidation was achieved by blending different sized silica like quartz flour, micro silica fly ash and the new polycarboxylate super high-range water reducer/super plasticizer. It flowed like molasses or molten tar. It drips in a stringy non-Newtonian rheology that forms thin dense puddles on the ground. Boral Materials technology made a real breakthrough by replacing that complex gradation for densification, that was like mixing basket balls, grapefruits, ping pong balls, marbles and BB s to achieve a consolidation where everything touches, with an ultra-refined fly ash that can be used in a much smaller portion of 12-14 percent portland. That was the dark grey Boral Micron 3 that is no longer available. The STAR M3 from Spherix Mineral Products replaced it. It is a light reddish brown color and refined from a North Carolina Flyash reserve that is from Anthracite so has higher iron content and less impurities but is the same spherical Silicate that is 80 percent less than 3 microns. The refined flyash works by replacing that complex array of particles with a more simple complement of particle sizes that creates the same densifying compaction. It is more like lots of basketballs (micron 60 Portland) a few marbles (micron 3) and a few BB s -the Eucon MSA (silica fume). The other real breakthrough made by Boral was their improvement of the polycarb. They blended it with old-school densified calcium and Mg lignosulfonates derived from the Japanese Cyprus. This prevented segregation and added polymer bonding compounds. This combo of Boral Micron 3 and “SPJ” (Super Plasticizer plus the ‘J’, the Japanese water reducer) resulted in a 17,500 psi pea gravel mix that was available to everyone. They didn’t realize that not many could really fathom the benefit of changing to a new stronger concrete. Boral sold their chemical division to Euclid Chemical Co and the super P turned from Boral SPJ to Plastol 5000. Euclid refined their Silica Fume into a product that is safe and consistent. That is now added at 10 percent cement. Sand blasting sand is added, 20-80 silica sand at 10 percent of the 2.5 gallon ASTM C-144 mortar sand, to continue in that key style consolidation that Boral started. I dialed in the complementing fibers at max dose, the PVA-RESC 15 ml and the Forta Ferro 3/4 inch. Two complimenting fibers was something that Antoine Naaman later studied after we corresponded on the subject. He confirmed the complementing enhancement in a paper. He is the professor who wrote Ferrocement and LamInated Cementitious Composites which is a good research resource. Also, I added the 8 to 11 percent closed spherical cell aeration that binds with extra gel water, water not reacted, and converts it to closed spherical cells. This unique water bonding characteristic of Mearlcell 3532 removes the capillaries that cause water intrusion and replaces those capillaries with spherical closed cells that repel water while channeling crystal expansion to the interior of those bubbles and also densifies the area around the bubbles to channel water electrically to cracks that become exposed to CO2 in the atmosphere. The rust, ice and sulphide expansion grows inside of these cells instead of weakening the cement by wedging apart bonds within capillaries. Other foaming compounds created pockets of densified material surrounded by suds but the Mearlcell 3532 bubbles blended right in as a multi sized micro aggregate. This unique water bonding effect causes other foamed concrete mix designs to have unpredictable compressive strength because of variable water content affecting density so it is not advertised as available but Airex Industries still makes about 10,000 gallons per month for people like me who appreciate it's unique water-bonding micro sphere aeration benefit. For the Ultra High Strength Reactive Powder mix, the water content is minimum and the Mearlcell ensures that by bonding to extra water. It does not have a significant unpredictability factor for this kind of plaster as long as it is foamed perfectly, very slightly runny, and kept in that 6 to 11 percent range. The 6 percent has a compressive strength that exceeds 15,000 psi which should not be possible because of the foam but this foam does not weaken the mix as much as it should. Portland cement hydration produces lime as a byproduct: calcium silicate hydrate (the hard stuff) lime + CaO, or also called calcium hydroxide, slaked lime, in the presence of water. The lime that is mostly a wasted by-product, reacts initially with the micro silica and then reacts in a second wave for that late-strength gain and crack healing effect. Besides the Calcium Silicate Hydrate reaction derived from Lime Carbonate reactions also occur where lime water is directly observed precipitating calcite in cracks. The water and lime are observed to be transferred to cracks via some kind of electrical effect that occurs as the PH lowers and the pozzolan reactions shift the use of the calcium hydroxide to carbonate reactions that fill cracks. Ironically, the strongest mix happens to be the softest most spreadable plaster. Something interesting happens when you dial in minimum hydration. Instead of getting a runny drippy mix, which happens if you add too much water, you get a workable render. It Seems meant to be.

@jamesw7072 11 ай бұрын

Greetings Harry, hope you and Mrs. Aircrete are well and enjoying the summer. I look forward to an update video on how the home build is going.

@AircreteHarry 11 ай бұрын

Greetings James, Thank you for the kind note, we appreciate you 👍 Sending our Best right back at you! Life happens - we'll have more videos in the future. Stay Awesome!

@RedefineLiving 11 ай бұрын

Awesome upload

@AircreteHarry 11 ай бұрын

Thank You! Glad you enjoyed it 👍

@cratylusco5270 2 ай бұрын

So where do we go to find out how to mix this cement together to try? I like the latex roof cement and the batches done for the domes.

@AircreteHarry 2 ай бұрын

Welcome to the channel, For the Stucco/Latex mix Recipe, visit: aircreteharry.com/product/latex-cement-recipe-mixing-instructions-tools-needed-links-aircrete-harry/ To get in touch with Doug, please see the tag in the video description - mention this video.

@blaisemorris1301 11 ай бұрын

Have you experimented with Waterglass and cement mixes?

@AircreteHarry 11 ай бұрын

Not in that way, no. What are you having in mind?

@blaisemorris1301 11 ай бұрын

@@AircreteHarry Hi Harry, I was building simple aircrete/ vermiculite or perlite structures and by adding waterglass ( which is very easy to make yourself) you can control the "setting" time or by painting on afterwards you can make it water resistant and give it a lot of strenth esp in areas that take heat, it just seems like something simple to add that is pretty cheap but is sort of a catalyst multiplier? if that is even a term?