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A new standard type 2 storey house has started construction next door. I noticed they are using ALC panels. Look like 2mt x 1mt and 2mt x 1/2 mt. Started yesterday morning and by nightfall all ground floor walls completed around 10 hours. Started first floor wall construction this morning.

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A picture is worth a thousand words....ALC blocks ? ?

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Autoclave Lightweight Concrete.

 

What are the panels attached to for lateral strength?

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A few hotels in CM have used this method.

Its basically a  thin concrete cladding panel that the West have been using for 30+yrs.

Think Slenderwall. 

Compnany here VCon use CLCcellular lightweight.

 

I have seen them hanging from concrete beams and bolted through eyelets, profiled of course so they overlap.

No render,just filled and painted.

 

Quite a typical method of system build really.

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19 hours ago, johng said:

A picture is worth a thousand words....ALC blocks ? ?

Wrongly named. Should be AAC panels.

IMG_7846.JPG.8906901f14ff5a3250b73ce30c16f08e.JPG

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So they don't use concrete posts and beams with these blocks ?

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Ahh ok.they do use concrete posts and beams.

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Great idea, notice the staircase landing built into the wall.

I would of course be paranoid about not seeing those hairline cracks typical in aac. If a full panel is cracked its an expensive job.

Panels gotta be 500-1000bt each?

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The product is Aerated Concrete, (CLC) this is my understanding .

There are two processes (maybe more) for making Aerated Concrete, the Autoclaved Aerated Concrete (AAC) and Aerated Concrete(CLC cellular lightweight concrete) 

the only difference in product produced under similar quality  control is the compression strength. ACC block has a much higher compressive strength than CLC and can be used for load bearing construction, where CLC is not.

The AAC process is scalable and can be used for mass production maintaining consistent quality, where the CLC process is not scalable and quality varies from batch to batch.

below is a video explaining the differences ,also I will try to find a video on how to make a foam machine and make your own CLC,

to make your own you need a foam generator, you can purchase one on Amazon,or you can make your own, search Youtube for instructional vid if interested.

the following video will give you an idea about foam generators and how to make Aerated  Concrete. If I did the only thing I would make would be a mess.

IMO much easier and safer  to go to your local home improvement store and buy AAC

block

 

Edited by sirineou

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1 hour ago, sirineou said:

The product is Aerated Concrete, (CLC) this is my understanding .

Unlikely 

IMG_7847.thumb.PNG.1641bfad4bde43d28d1a9790b44c8a08.PNG

it looks exactly like the Q-Con AAC panels.

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2 minutes ago, sometimewoodworker said:

Unlikely 

IMG_7847.thumb.PNG.1641bfad4bde43d28d1a9790b44c8a08.PNG

it looks exactly like the Q-Con AAC panels.

It does, except for the differences explained in the video.

I don't have first hand experience with CLC, so I am regurgitating information a learned when I build my house and was researching my options. I went with AAC as the safest option.

  but as explained in the video the compression rating is a lot lower, so not good for load bearing applications. but for applications where the load bearing is supported by the columns and beams it should be ok.

The other problem is inconsistency in production since the CLC process is claimed to not be scalable. And because the CLC product is not consistent it is not widely sold and easy to find. where good quality AAC is available everywhere.

Other than that , I know as much or less on the subject , that everyone else.

 

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On 8/15/2019 at 6:54 AM, Toosetinmyways said:

If anyone is interested in doing costing on different systems all internal and external walls took 3 people 3.5 days.

OP great thread. I am embarking on a house build now and have a quote from a builder who proposes AAC 75mm thick blocks - which looks to be the width of the panels I see in those photos.

Have any comments on how the place looks now, almost exactly a year later? Do you know if they used a single wall, or did they double it up? I have seen a few places this builder has done now and they look good, and the weather here I find not too extreme - not like where I am from anyway and from what I read I think 75mm might be more than up to the task, but would like to hear what others have experienced.

Cheers

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