By admin Construction • • • • 0 Comments

7 Critical Checks for Parking Lot Drains

Business owners commonly think about cracks and damage that lead to asphalt repair; however, it is just as important to think about parking lot drains as well because parking lot repair can be expensive. Water is a good thing when it comes to parking lots; however, too much water can also lead to serious damage. Even shallow puddles can cause the surface to become slippery. Cars can lose control and collide with other vehicles, leading to both personal injuries and property damage. This can cause the reputation of the business to suffer. This is where it is important to check parking lot drainage, starting with the drains themselves.

Checking for Parking Lot Drainage: The Drains

Some of the most important items that need to be on this checklist regarding parking lot drains include:

Water Collection: First, take a look around the drain. Make sure there isn’t any water ponding around the drain. If water starts to pool around the drain, it will collect along the sides. As a result, pressure around the drain will start to increase. During the winter, this water will freeze. When water freezes, it expands. This will cause the drain and concrete to crack, leading to damage.

Flush with the Surface: All parking lot drains need to be flush with the asphalt surface. If it is not, this is a major concern. If the drain is not flush with the asphalt, this can cause water to pool. It can also lead to flooding.

Ring Popping Up: Another potential issue that people might notice with their parking lot drains is that the ring is popping up a little bit. In this case, a small asphalt patch can fix the issue. Just make sure the patch is level. This will prevent a collar from forming that will stop the water from draining correctly.

Inside: Be sure to check inside the drain as well. Take the time to look for gunk, foul smells, and debris. If there is a clog inside the drain, this can also lead to a mosquito nest, which is a major nuisance. To look inside the drain, test the drain by pouring water into it. It should drain properly.

Blockage: Of course, it is also important to make sure that parking lot drains are not blocked by either debris of vegetation. If the drain is blocked, water cannot reach it properly. This will lead to flooding.

Loose Material: Sometimes, there is loose material that forms around the drain. This could be sand, gravel, or other materials. This is a major problem if the drain is near a major road. This aggregate can be brought in by runoff and heavy rain. Ensure this is not accumulating within t the drain.

Pooling: Finally, look at the center of the parking lot. Does the water pool in this location? Parking lots usually slope from one end to the other to help water drain. If water is pooling in the center, this means the center of the parking lot has dropped, causing water to pool and preventing it from draining properly. This will require a parking lot repair.

These are the most important elements when it comes to checking parking lot drains. This is important for making sure that all moisture drains properly. It will prevent property damage from arising down the line and save people money on asphalt repair.

By admin Construction • • • 0 Comments

The Top Ways to Remove Paint from Concrete

Do you need to remove paint on concrete, but you aren’t sure where to start? There are a number of methods for stripping it. These create a clean surface ready for repainting or concrete repair. Some important factors include:

  • How much surface area you’re dealing with
  • What condition the paint is in
  • Your technical skill level

Here are five methods for removing unwanted paint from commercial concrete:

Elbow Grease

If you have a small spill of wet or badly weathered paint, you may be able to simply scrub it off. You’ll need a scraper, a wire brush, some upper body strength, and plenty of patience.

Sweep the area and apply a cleaning solution. Diluted trisodium phosphate works well here. If you don’t have that or aren’t comfortable working with it, try soap and water. Wet the area down and let it sit for a few minutes before beginning to work. Re-wet the concrete as you go. If nothing else, you may be able to remove enough paint that you’ll only need one round of paint stripper to take off the rest.

Power Washer

If you have a commercial power washer, there is a chance that it can handle this problem. Power washers can be very effective for still-wet paint from spills. It may also be used to remove old, cracked, or peeling paint. However, dry and cured paint in good condition may require more aggressive methods of removal.

Paint Stripper

Paint strippers are very effective and can clear off large areas of paint. However, these chemicals can be dangerous, so follow the instructions carefully.

Start the process with a thorough concrete cleaning. Use a broom or vacuum. If necessary, scrub off sticky residue with soap and water.

Next, get a chemical paint stripper from your local building supply or home improvement company. If you know whether the paint is oil based or water based, use a paint stripper formulated for that. Otherwise, try products intended for oil based paint.

Apply the paint stripper. Make sure that you wear protective gear. Once the stripper has set for enough time (this varies by the brand), scrape up softened paint and scrub the area with a wire brush. If some paint remains, repeat the process.

Scouring Paste

To make a scouring paste, simply mix a chemical paint stripper with something absorbent. Many people use crushed cat litter or powdered clay. Next, apply the paste and wait. Fast acting paint strippers may require 20 minutes to soak in, while slower formulations may need several hours.

Scrape the excess paste off and then scrub the area. The combination of an abrasive with the chemicals should help lift the paint in one or two applications.

Soda Blasting

This is a ‘dry’ form of scouring that blasts the area with chemical powders. Like with paint strippers, this is effective for larger areas. Baking soda is the most commonly used chemical. You’ll need to rent a pot blaster and purchase some coarser soda. Sand blasters cannot handle this job, and household baking soda is too fine to be effective. You should be able to buy the right kind of soda from the same place where you got the pot blaster. Follow the directions carefully, and don’t forget to use a respirator or dust mask while working.

By admin Construction • • • • • • 0 Comments

Hot Weather Concreting: How to Avoid the Problems that it Presents

The Perils of Concreting During
Hot Weather And How To Avoid Them

Hot weather concrete pouring can cause a myriad of problems. Many people think it is just about the heat itself but there is more to it than that. Many factors affect the quality and success of concreting during hot weather conditions. Hot weather, as defined by ACI 305R is any combination of the following:

  • High ambient temperature above 90 degrees
  • High concrete temperature
  • Low relative humidity
  • High wind speed
  • Solar radiation

The heat is not the problem as concrete cures through hydration and not temperature. However, when the concrete becomes hotter than 77 degrees, it speeds up the hydration timing. If the concrete isn’t hydrated properly, it will be weak, crack easily and be more susceptible to damage from freezing and thawing. Construction crews must prepare for hot weather concrete placement.

Ways to Prepare for Pouring Concrete in “Hot Weather”

  • Crews should avoid pouring the concrete during the hottest part of the day. Tracking hour by hour temps can assist with this determination. It is also wise to avoid extreme temperature changes. Pouring concrete on a hot day when followed by a cool night can cause thermal cracking to ensue.
  • A team of workers should be available to ensure that the work is finished quickly and efficiently. Truck delivery should occur early in the day and a group of laborers ready to start immediately. Check for any potential delays so that the task will be completed in a timely manner.
  • Sunshades, windbreaks or mist fogging can be used to protect and slow down the process of the concrete curing too quickly.
  • Extended set additive, moderate heat cement and blended cements can provide solutions to pouring concrete in difficult conditions.
  • Keeping concrete in the shade before pouring or using an evaporative retarder may help as well.
  • Once the water is added to the mix, reduce the mixing time.
  • Ice or cold water can be added to the mixture to cool down the concrete. Cold water can reduce the heat of the concrete by about 10 degrees and ice by approximately 20 degrees.
  • If a slab is being poured, putting cool water on the sub-grade is another neat trick.
  • Control-joints can be spaced closer together to aid in strengthening.
  • Steel Fiber Concrete can be used to make slabs to add after walls and roofs are built out. Adding steel fiber to concrete has advantages and disadvantages so do your homework before choosing this method.
  • Extreme weather conditions may require the infusion of liquid nitrogen into the mixers. This solution can be costly as there are concerns about damage to blades and precautions must be taken.
  • There are several curing methods that can be used. Understanding these methods directly impacts how successful your curing process is.  Concrete companies will want to have a plan ahead of time as to the correct method for each individual situation and to follow through with recommended procedures.

Setting concrete in difficult situations is a complicated process. However, with a little research and a lot of preparation, a concrete job can have favorable results.

By admin Construction • • • • • • 0 Comments

Common Concrete Issues

Concrete is a common material used due to its durability and versatility. Under the right conditions, it is a sustainable material. But, there are numerous common concrete problems, which can prevent concrete from attaining its longevity. Recognizing these problems and understanding the solutions can improve the overall performance of concrete. The common concrete problems include dusting, blistering, plastic shrinkage cracking, discoloration, and scaling.

Dusting

Dusting on concrete occurs when a hardened concrete surface appears as a powdery material. Laitance, which is a layer of cement, water, and fine aggregates is the primary reason why dusting occurs on concrete. The laitance layer is weak, porous, and thin. As a result, the laitance makes the hardened concrete surface vulnerable and weak.

Other reasons why dusting appears include improper cure of the concrete surface, exposing the concrete to carbon dioxide while it is in a plastic state, and conducting finish operation on the concrete surface while it still has bleed water—this is water that separates itself from the concrete.

To avoid these problems, proper concrete curing procedures should always be followed; equipment that produces carbon dioxide should always be vented while the surface is in the plastic state, and the finishing operation should always be conducted on the concrete surface after bleed water has been removed.

Blistering

Blistering appears on a hardened or fresh concrete surface as bumps. These blisters occur when bleeding water or entrapped air rises to the sealed concrete surface. Blistering of concrete surfaces is problematic, as it causes the concrete to break easily under stresses like traffic. Other reasons why blistering occurs include excessive or inadequate use of vibration during concrete compaction, setting concrete surfaces over the vapor barrier, and sealing the concrete surface early.

To prevent blistering from occurring, appropriate concrete compaction procedures have to be followed, if possible, concrete should not be placed over vapor barriers, and trowel blades must be kept flat at all times to avoid sealing the concrete surface early.

Plastic Shrinkage Cracking

Plastic shrinkage cracking occurs when a crack appears on fresh, hardened concrete surfaces. Like the name suggests, these cracks develop while the surface is still in the plastic state. These cracks occur when the concrete surface experiences a rapid loss of water before it sets. Although plastic shrinkage cracking is an aesthetics issue and not a structural issue, these cracks end up allowing chemicals to penetrate the surface, and this can result in structural problems later on.

The loss of water on concrete surfaces can occur due to several reasons like low relative humidity, high winds, and high concrete temperature or ambient air. To avoid these conditions, ensure you use fog spraying equipment, windscreens and windbreaks should be installed, and always avoid placing concrete at midday.

Discoloration

Discoloration of concrete can occur due to various reasons like material exposure, weather conditions, and even the curing time. Although concrete discoloration may look aesthetically unpleasing, there are numerous ways you can repair these issues. The first method is using a concrete cleaner. These will help give the concrete a better and natural look. If that does not work, you consider using a concrete stain.

Scaling

Scaling on concrete surfaces occurs when the surfaces start to chip or flake away. This is usually because of freeze-thaw, water seepage, poor concrete finishing, or weak concrete surfaces. To repair scaling issues, use trowel-grade light coat, as it helps fill the scaled area. Also, ensure that you seal your concrete at all times, as this helps to reduce scaling significantly.

By admin Construction • • • • • 0 Comments

The Top Reasons You Should Be Sealing & Finishing Your Concrete

When properly installed and maintained, concrete has a lot to offer to business owners. This manmade substance is affordable, durable, attractive, and easy to keep clean. Having your concrete finished and sealed is key to getting the best results.

So what are finishing and sealing? Finishing is a process that smooths down the surface of the concrete. It’s typically done when the material has had time to partially dry but is still soft and workable. Sealing, meanwhile, is the application of various substances like acrylics, epoxies, and silicates. When applied to clean and dry concrete, they form a protective barrier. If these two jobs are skipped or rushed, you may find yourself with an expensive headache on your hands.

Here are the top five reasons why you need to have your concrete finished and sealed to keep it looking and functioning great:

1: Finished Concrete is Safer

The process of finishing concrete creates a smooth and level surface. It eliminates most of the micro-ridges and hollows that roughly poured concrete can have. This means that the surface doesn’t have hidden tripping hazards which your employees or customers could stumble over. Liquids will also glide away instead of pooling and creating slick spots. Finally, a smooth surface will not damage tires or objects placed on it.

2: Finished Concrete is Stronger

This advantage is due to several effects. Properly finished concrete has shed its excess water while maintaining the mix’s integrity. When the water evaporates, a highly durable form of concrete is left behind.

A flat or gently banked surface also does not collect rainwater, spilled chemicals, and other such substances. These liquids can eat into the concrete, creating pits that may turn into potholes over time. If the spills happen in freezing winter temperatures, the concrete will become damaged even faster. Although heavily damaged concrete can be repaired or resurfaced, these are major expenses that a savvy business owner can avoid.

3: Sealed Concrete is Protected From the Climate

Concrete companies urge you to seal your new concrete floors, parking lots, and sidewalks for good reason. Rain, ice, and snow are more likely to get into tiny cracks and pits in unsealed concrete. Sealing creates a water-resistant barrier that adds to the longevity of this material.

Certain kinds of sealers will also chemically penetrate the concrete. This creates a denser and stronger material. Your concrete contractor can advise you on the best products for your business’s needs.

4: Sealed Concrete is Easier to Keep Clean

You don’t want to work in an unsightly environment or have your customers see mystery stains on the concrete. Sealant can protect this surface from discoloration due to road salts, motor oil, spilled chemicals, etc. These dry and sealed surfaces also resist hard-to-remove mildew and staining mold growth.

5: Sealed Concrete is Stylish

Different concrete sealers can create different effects. One type may have an attractive high shine gloss reminiscent of polished marble. Another might create a matte finish that reduces glare from the sun. This can be a great feature in sunny working areas.

You can also order tinted concrete sealers. These come in a wide variety of color options, from neutrals to brighter shades. However, tinted sealers aren’t just for looks. Ask your concrete company to lay down strategic stripes or boxes of contrasting color and you can mark out walking paths, dangerous loading zones, and more.