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What are the disadvantages of lightweight concrete, compared to typical concrete?

Lightweight Concrete Materials
In the lower density ranges lightweight concrete does not develop the compressive strength of plain concrete. While this may be a disadvantage in plain concrete applications, it is an advantage in a lightweight concrete application. It should be considered that lightweight concrete and plain concrete are typically used for different types of applications. Each form of concrete exhibits a unique family of performance characteristics. Each should be utilized in the appropriate type of project.
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What are the advantages and disadvantages of concrete compared to other countertop materials?

Innovative Concrete Creations - Concrete Countertop Frequent...
bull;Custom: Concrete's biggest advantage is that it is completely custom. Your countertop will be unique and highly personalized. bull;Versatile: Concrete is extremely versatile. It can enhance any style, from country to contemporary. Traditional to Modern. The possibilities are endless. bull;Imperfections: We believe that this is an advantage. Concrete countertops are hand made and hand finished.
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What are the disadvantages as compared to the LapBAND?

vsgBand FAQ
The LapBAND is reversible; the VSG is not. Unfortunately this turns out not to be much of an advantage of the LapBAND, as the only reason to remove a LapBAND is for complications. If you have questions that have not been answered by this FAQ, please send them to me and I will try to answer them for you.
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Where do I purchase lightweight concrete?

Lightweight Concrete Materials
Lightweight concrete is purchased from LCM and all technology and know how will be transfer to any parties willing to be train in the field of lightweight concrete installation. Those interested will have access to a LCM Foam Generator and all methods of applications. These people purchase their liquid foam concentrates directly from LCM.
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How is lightweight concrete placed?

Lightweight Concrete Materials
The pre-formed foam is added to the cement slurry and mixed in the concrete mixer or in a continuous process. >From that point, lightweight concrete is placed in any way that a fluid mix can be transported. Pumping is the most common method of placement. Tailgate ready mix truck delivery, bucket cranes, wheelbarrows, hand carried buckets and any other acceptable method of delivering a fluid mix works well.
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Can lightweight concrete be under mixed??

Lightweight Concrete Materials
The cement and water slurry should be mixed until there are no dry clumps or balls of cement. The pre-formed foam mixture is then added into the mixture. The foam mixes quite rapidly into the slurry and only requires modest mixing times depending upon the mixing equipment.
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How far can lightweight concrete be pumped?

Lightweight Concrete Materials
Lightweight concrete is a very easily pumped, highly fluid mixture. The bulk of lightweight concrete is placed by pumping. Lightweight concrete typically will move through the pump lines using less pressure than typical heavier grout mixes
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How do you finish lightweight concrete?

Lightweight Concrete Materials
Most lightweight concrete is left to self-seek a level and not surface "finished" in the traditional sense. Much lightweight concrete is covered by another material. A floor overlayment type smoother tool can be used simply to break the surface air cells and create a more uniform and polished look to the surface in the rare case when a more uniform surface appearance is desired.
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What are the disadvantages as compared to gastric bypass?

vsgBand FAQ
The main disadvantage is that we don't have long-term data to document that weight loss will be maintained. The sleeve may stretch out, resulting in weight regain. Another disadvantage is that the operation is not reversible, in that part of the stomach is removed and thrown away. It can never be replaced. (On the other hand, there should be no reason to want to put it back).
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Is this product made from lightweight concrete?

Siteworks - Frequently Asked Questions
No. Our cast limestone is made using real limestone and is similar to the weight of natural stone. This should be taken into consideration when ordering and planning off loading of your mantel.
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Can tile be installed over lightweight concrete or gypcrete?

Design Stone Gallery - FAQ
It is not recommended to install tile over gypsum products. The moisture in the setting materials has a tendency to deteriorate the gypsum cement.
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What type of cement is appropriate for lightweight concrete?

Lightweight Concrete Materials
Lightweight concrete may be produce with any type of portland cement or portland cement & fly ash mixture. The performance characteristics of type II, type III and specialty cements carry forward into the performance of the lightweight concrete.
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How does lightweight concrete compare in price to plain concrete?

Lightweight Concrete Materials
A typical concrete structure project will be much less expensive cubic meter to cubic meter when compared to plain concrete due to labor savings, less cost of forming works, less steelworks, eliminate brickworks, cement renderings work and the price savings is very substantial when compare to conventional methods. We should note that lightweight concrete is seldom ever used in an application where plain concrete would be applicable.
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Is lightweight concrete a suitable material for a concrete canoe?

Lightweight Concrete Materials
Once again, similar in scope to the above question regarding marine float applications, lightweight concrete could be used for the fill in a concrete canoe but should probably be encased in a waterproof membrane
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Is lightweight concrete chemically compatible with common admixtures?

Lightweight Concrete Materials
Lightweight concrete is compatible with common concrete construction admixtures; however, most common admixtures are added to plain concrete to effect a change in the characteristics of the concrete that are not applicable to lightweight concrete application performance. As an example, lightweight concrete needs no air entrainment or finishing aids; however, color admixtures and strength enhancing admixtures work well if they are applicable to the project.
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Do lightweight concrete mix designs contain either fine or course aggregate?

Lightweight Concrete Materials
Lightweight concrete may also contain normal or lightweight, fine and/or coarse aggregates. The rigid foam air cell system differs from conventional aggregate concrete in the methods of production and in the more extensive range of end uses. Lightweight concrete may be either cast-in-place or pre-cast. Lightweight concrete mix designs in general are designed to create a product with a low density and resultant relatively lower compressive strength (when compared to plain concrete).
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Is it appropriate to add fly ash to the cement and water slurry for lightweight concrete?

Lightweight Concrete Materials
Fly ash added to the cement does not adversely affect the basic hardened state of lightweight concrete. Infusing and supporting the lightweight concrete with the air cell system is a mechanical action and is not problematic with fly ash or admixture concrete chemistry. Note that some fly ash mixes may take longer to set than pure portland cement applications. Mixes with large percentages of fly ash may take an very extended time to set up.
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Do the bubbles in lightweight concrete collapse, reducing its volume?

Lightweight Concrete Materials
Not with well engineered liquid foam concentrates. The pre-formed foam lightweight concrete products made from top quality LCM liquid foam concentrates do not collapse. Air cell stability is the mark of a superior foam concentrate and foam generator combination. Which is not to say that all lightweight concrete products are stable. Particular care should be taken to test foams from water pressure type foam generators, and gas-off chemical products.
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Is lightweight concrete suitable for long-term use as a marine float device?

Lightweight Concrete Materials
the lower densities, lightweight concrete will float, and in many cases float indefinitely. Because of its limited impact and abrasion resistance, lightweight concrete used for marine flotation should be encased and used for the fill of a float. For example, a superior marine float could be made with sealed 55-gallon drums full of low-density lightweight concrete.
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How do I test lightweight concrete to determine it is performing to specs?

Lightweight Concrete Materials
Test procedures for lightweight concrete are beyond the scope of this short document; however, lightweight concrete LCM representatives will be happy to assist you in the actual testing or furnishing descriptions of common tests. Properties commonly tested are for its compressive strength The majority of regular concrete produced is in the density range of 2400 kg permeter cube.
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Can I install ceramic tile over lightweight concrete or gypcrete?

Port St. Lucie, Florida Tile and Marble Contractor: Chris Bo...
No, tile installation is not recommended over gypsum products. The moisture in the setting materials will deteriorate the gypsum cement.
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What are the advantages and disadvantages of sandstone versus concrete?

City of Shaker Heights - Public Works
Sandstone is considered to have more aesthetic appeal by some residents. Sandstone is a natural material and concrete is manmade, so some people have preferences for one or the other. Sandstone is at least twice the price of concrete and can be very slippery when wet. Concrete tends to be safer as it has a coarser texture and gives more traction in wet, snowy or icy conditions. Both are similar in terms of wear and tear.
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What Are The Disadvantages Of A Living Trust Compared To Probate?

Probate Court - FAQs on Living Trusts
Lifetime Effort. The implementation of a "living trust" is likely to be more time consuming and far more tedious than would be the case with only a will. The single most common defect in the implementation of a "living trust", where the goal is to avoid probate, is the failure to transfer ownership and title of assets into the name of the trustee.
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What about concrete?

Frequently Asked Questions
Concrete is a commonly requested material. To be honest, we don't know much about gluing to concrete. You could check with some building sites. Cement is the adhesive that holds concrete together. It will take some research on our part but we are thinking about doing concrete. A very cool and specialized glue! It does its job then you can roll it into ball and ... well, have a ball with it. The glue that is used for "tip ins" (magazine jargon) is referred to as a Peel and Stick glue.
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How strong is a typical pervious concrete pavement?

FAQ's - The Concrete Network
Its possible to achieve pervious concrete compressive strengths of 3000 to 4000 psi and flexural strengths of 500 to 600 psi, which are on par with conventional concrete. With the use of admixtures, todays pervious concrete mixes can be made with less water, which improves strength and durability. Also, better placement methods have resulted in tighter pavements that maintain point-to-point contact of all the aggregates while providing the necessary void content.
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Is a lightweight racquet a good idea?

Tennis Racquet FAQs - Racket Information and Advice
Tennis elbow is a big concern when you discuss lightweight rackets. Light, stiff and head-heavy racquets are bad for tennis elbow, so you should steer clear of them. A heavy racket with a light head is best for avoiding tennis elbow while maximizing performance. A light racket with a heavy head gives the opposite effect. Sum it up this way: Here is another way to look at it.
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What are the disadvantages of MISS compared to traditional, open surgery?

MISS Frequently Asked Questions from UCSD Medical Center
Minimally invasive spine surgery holds significant promise, in terms of less pain and more rapid recovery. However, it is important to keep in mind that this is relatively new technology, and all new techniques are associated with some degree of uncertainty. Furthermore, certain minimally invasive techniques are highly technical and require significant training, and in cases where there is a lack of training, complications may occur.
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What are the disadvantages of FIR Filters (compared to IIR filters)?

Finite Impulse Response FAQ: Basics
Compared to IIR filters, FIR filters sometimes have the disadvantage that they require more memory and/or calculation to achieve a given filter response characteristic. Also, certain responses are not practical to implement with FIR filters.
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Question: Can we install fleece back RM membrane directly to lightweight concrete deck?

GenFlex
Answer: Yes if there is a metal pan under the lightweight concrete it must be a vented pan. Then the fleece back membrane can be adhered to the lightweight concrete with Solvent Based Fleece Back Bonding Adhesive. The contractor / building owner rep is responsible to ensure that the lightweight concrete is smooth, dry, and appropriate to adhere the membrane to.
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How does concrete effect the environment compared to wood and steel?

Sustainability FAQs | PCA Press Center
Concrete is one of the most inert building materials in use today. It does not rot, burn or rust, providing durability that significantly outlasts many other building materials including wood and steel. The cement industry utilizes industrial byproducts like fly ash and consumes less energy than its competitors. According to the U.S. Department of Energy, U.S. cement production accounts for 0.33 percent of energy consumption—lower production levels than steel production at 1.
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