How Are Mechanical Anchors Different From Chemical Anchors?

A fastener or an anchor bolt is a device that is used to attach objects or structures to concrete. Though there are many types of anchor bolts and designs, they are mostly proprietary to the manufacturing companies. The fastener usually comprises a threaded end, which can be attached to a nut and washer for the external load. Anchor fasteners can be categorized into two types essentially, mechanical anchor fasteners and chemical anchor fasteners.

Let us now delve further to understand the different types of anchor fasteners available and how they work.

Types of Anchor Fasteners

Mechanical Anchor Fasteners

Mechanical anchors physically leverage friction anchor themselves in place. Often, the base of an anchor is designed to expand in diameter when it is inserted into the hole, such that, the expansion strongly grips the base material and wedges the anchor firmly in place. The force used in pushing the anchors the screw in place and prevents it from falling out.

In the world of mechanical anchors, the diameter of the hole drilled plays a critical role. It is important that the hole diameter is just right, because, if it is too large then it fails to sufficiently grip the sides of the hole and thus collapse when it is put to loading.

Chemical Anchor Fasteners

Chemical anchor fasteners come with a special injectable adhesive that helps to stick the anchor into the hole. The most load-affecting and time-consuming step in the installation process is cleaning the hole before injecting adhesive. Therefore, Hilti has brought in a range of tools that can help install adhesive anchors more quickly and reliably using SafeSetâ„¢ Technology. It includes hollow drill bits, vacuum cleaners, HIT-HY 200 and the HIT-Z anchor rod that can help you to accomplish tasks effectively. Once the hole is cleaned of all dust and debris, it is then filled with the chemical adhesive.

The chemical is then left to set. Quick setting chemicals may set in an hour, while the more common ones may take up to 24 hours. One must not apply load on the anchor until the chemical has set completely.

Mechanical vs. Chemical Anchor Fasteners – Which one should you choose?

The fundamental differences between chemical and mechanical fasteners are listed below:

Speed: Load can only be applied to chemical fasteners once the chemical has set completely, whereas, a load can be applied on mechanical fasteners immediately upon installation. So, in case of speed-critical projects, it would be ideal to choose mechanical fasteners. However, there are quick-setting anchor epoxies (chemicals) on the market that take about 45 min to 1 hour to set, while regular epoxies take around 12-24 hours.

Waterproofing: Most mechanical anchors leave a slight gap between the fastener and the base material. In case of fastener installations outside the building like fixing an external AC unit, signage, or TV antenna, a mechanical fastener version may cause leakage into the building. In such a scenario, a chemical fastener is superior as the epoxy chemical fills up the recess between the bolt and base material, rendering a water-tight connection. Chemical fasteners are therefore suitable for external fastenings where leakage may be a pertinent factor.

Load Capacity: Regarding load capacity, it is not that one version of the fastener can bear more load than the other. Both the versions i.e. chemical and mechanical fasteners are available in a wide range of load ratings and capacities.

How to Select the Best Air Compressor for Use

Buying an air compressor requires careful thought and consideration. An ideal compressor requires focusing on many performance factors. An Air Compressor Buying Guide is the starting point before you make this decision. This article discusses the factors you need to consider before making your last choice.

Check the needed Standard Cubic Feet per Meter output – S.C.F.M.

This is one of the most important factors. It is the Standard Cubic Feet per Meter output of a compressor. This is also the volumetric output of a compressor. It is normally higher than or almost equal to your consumption. A high output is achieved with a bigger compressor.

Check the pressure capacity of your compressor

In order for the targeted flow rate to be achieved, pressure is needed. This pressure is normally given in pound per square inch. It changes according to the compressor size, brand and design. If it is needed for heavier applications, the pressure should be higher. With an increased pressure, even the flow rate or output is also increased. Most importantly, the flow rate has to match your targeted consumption.

Why do you need that compressor?

The usage of your compressor dictates the ratings you should be looking for. If you only need it for some domestic purposes, something smaller would be enough. However, if you have a number of air tools and other equipment to use the same source, then you need a bigger compressor. The rating of each tool is easy to check from the indicated values. Add up the capacities of all the tools and include a 30% allowance.

From where are you going to tap electric power?

Your source of power is critical because it even dictates the size of compressor you can use. If there is a constant supply of electricity, then a single stage reciprocating compressor can be a good choice. But if you are in an area that is persistently hit with power cuts, shut downs and load shedding, the reservoir type is your right choice. You can run it when there is power, and use it whenever there is need. It will keep the needed pressure for long hours depending on your usage.

How much space do you have for your compressor?

Before your compressor is installed, you need to arrange enough space for it. This means that if you have enough space, a bigger compressor would be ideal. But if there is no space to accommodate a bigger compressor, buy a portable one. However, space considerations need to come only after you are satisfied with the performance. In some cases, you may even need to create space.

What are some common horse power ratings?

The horse power rating of a compressor needs to be considered just like the other factors. A variety of compressors may have their ratings ranging from 1.6 to 6 horsepower. However, this factor is normally governed by the pressure and S.C.F.M. of the compressor. The power rating should not be a standalone factor. It should meet the requirements for your usage.

Summary of requirements

In conclusion, your compressor should match the usage you are buying it for. Therefore, the best Air Compressor Buying Guide you need should answer your performance questions. Most manufacturers provide the needed details. With the best guidance, you will stand a chance of buying the best equipment to work for many years to come.

7 Tips For The Best Portable Air Compressors You Can Buy Right Now

With a good portable air compressor, you can make your journey more enjoyable. These machines come in handy when you get a flat tire while on the move and no tire shop is around. You can fill the tire with air with the air compressor while searching for the nearest tire shop. Given below are some tips that may help you choose the best portable air compressor.

1. Size of the machine

If you have a big car, space won’t be an issue for you. On the other hand, if you have a small car, we suggest that you get an air compressor that can fit easily in your vehicle. Big machines take up a good deal of space and you won’t be able to fit in other things that you may want to carry with you. Therefore, we suggest that you look for a compact compressor.

2. Selection of an air compressor

Nowadays, you can find air compressors made by different companies. Each brand has its own features and specifications. The variety of brands, features and specs make it hard for a common user to make a choice.

The features you should look for when buying the machine are listed below:

  • A reliable pump and motor
  • Make sure the product is maintenance free
  • Air pressure of the pump
  • Pressure gauge

3. Power supplyDifferent air compressors come with different power supply adapters. You can find some devices that run on 120 volts. Others run on 240 volts. In a car, you don’t have access to a 240 or 120 volt power outlet. All you have is a DC car battery. So, what you need to do is get a DC air compressor.

4. Air hose and other accessories

You may want to consider the space factor when choosing an air hose. Ideally, you should go for a short but high quality pipe for the machine. As far as the accessories are concerned, we suggest that you buy a product that can use standard accessories and tools.

5. Warranty

You may want to get a product that comes with a guarantee. Even limited warranty is better than no warranty. As a matter of fact, warranty is a proof that high quality material has been used in the production of the machine.

6. Customer reviews

If you want to know more about all of the points that we have mentioned above, we suggest that you read customer reviews. This will help you find out if the product can meet your needs. For good and reliable reviews, you may want to check out Amazon reviews.

7. Price

Once you have decided on a brand and other things, your next and final step is to choose a product that is reasonably priced. After all, it’s a good idea to save money on buying the stuff you need. Your goal is to get the cheapest but highest quality product.

Long story short, you should consider these 7 tips when buying a portable air compressor for your car.