覆盖物在板坯上覆盖物的热质量？
I have a passive solar off-grid home that works extremely well with a 2 in. concrete slab that is finished with decorative concrete stain/paint. However, the slab and stain/sealer are completely defective and very likely have to be replaced, but one party is proposing a concrete overlay product be put atop the existing slab. The overlay product (ArtCrete Deck Coat, I think it is) consists of two parts–1) Portland cement, aggregate, and a stain, and 2) a modified acrylic latex resin. My belief is this is not good thermal mass (atop the concrete) as the resin component synthetic or at best partly plant material and only earth materials such as stone, clay, water, concrete, provide optimal thermal mass. That in fact the entire slab needs to be removed and the floor rebuilt from scratch to resolve the serious problems and still provide me with optimal thermal mass.
I’ve also been told there’s a table that shows even natural tile atop a slab causes a loss of thermal mass, but I have been unable to find that table. If anyone is aware of this or similar, please let me know.
Note also the slab has severe cracking–cracks at least 3/8 in wide in multiple locations.
Does anyone have experience or knowledge about this? Using or not using a concrete overlay product for the top layer of a floor for thermal mass, vs. a plain darkly stained concrete slab–whether there would be any loss of thermal efficiency.
GBA Detail Library
由气候和房屋部件组织的一千个建筑细节的集合
答复
k tot.,
It seems to me that if the entire slab needs to be removed, then you have the opportunity to replace it with any kind of slab you want -- including a concrete slab with dark stain.
我不熟悉那种具体的添加剂，你指的 - “改性丙烯酸乳胶树脂” - 但我猜测任何混凝土混合物的树脂成分将是混合物的小百分比，因此不太可能干扰混凝土板的性能作为热质量。
当然，如果删除平板，我可以以任何方式重做，但是这项工作的承包商可能争辩覆盖。正如我所做的更多和更多的研究，除了覆盖产品问题的非地球材料成分外，有些人认为（并且一个引用桌子但不能记住的来源）放置两个不同的层次（任何东西）会降低最大的热量需要从（在这种情况下）从（在这种情况下）转移到覆盖物（如果是足够的热质量）到覆盖裂缝的某种网状物，并且最终向下到作为主热质量元件的板坯。
k tot.,
您是否与此叠加制造商的链接 - 到描述产品的网页？
Most likely it is艺术甲板外套.
Scroll down that page and you'll see some links to sheets about both the powder and resin, plus others, though when I've tried them some of the links did not work.
k tot.,
我看了看点。我无法想象用作添加剂的小树脂将对这些板坯作为热质量的差异产生大大差异。
Do you know why the slab cracked? what is the spawn of the slab ? is it on grade or on beams?
谁对这款板坯是责任的？
有人需要在3/8“裂缝... 3/8”中的宽度非常大，看起来像机械故障。
你能拍一张板的照片并描述它的设置吗？
I surely wouldn't accept a cracked slab that has openned up by 3/8" as a floor slab in a house where the slab is decoreated and act as a finish
金喀扎山, can you please elaborate on your last sentence? That's the kind of thing I need as much detail about--factual information--as possible. I agree it's unacceptable but the concrete contractors are trying to claim it's common and normal (one said 99% of their jobs have cracks at least 1/4 in. wide, the other said 50% do--for residential and commercial stained slabs, i.e., decorative finishes on the slabs.
专家博士专业技术人员已经看到了裂缝，报告即将到来。
The cracks are due to way too much water added on-site during the pour, probably an improper mix, and the trucks sitting around too long. I don't know if the expert report will say the following or not, but my view is the improper finishing/curing processes and techniques, sealing the floor with a non-breathable sealer only nine days after the pour with inadequate testing before doing so (in fairly cool weather in the northern Rockies in April before the house had heat on, i.e., when it was still under construction), and a few other things also may have contributed to the problem.
The floor is overbuilt with 11-7/8 in. joists. The engineering report on this has been done and it's a fact that the floor itself is fine. There has been zero settling of the house in two years--no drywall cracking, no sticking windows/doors, and so on that would be possible signs of settling (again, this is based on comments by an expert as well as observation by me and others).
So can you please elaborate on what you mean by "looks like a mechanical failure"?
板坯升高，而不是等级。混凝土承包商倒入板，以及染色/密封。我的建造者当然在混凝土进入之前建造了地板。
I'm not positive what you mean by spawn of the slab. The house isn't rectangular but it's probably more square than elongated (it just has more than four sides) and is about 1300 sq. feet on the main level, give or take. So if spawn is the diagonal, it's around 51 feet, roughly.