What causes bug holes in concrete?

Bugholes are surface voids that result from the migration of entrapped air (and to a lesser extent water) to the fresh concrete-form interface. These surface defects manifest themselves mostly in vertical surfaces.
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What causes small holes in concrete?

Problem:Small pop outs or holes that occur on concrete slabs are often the result of lignite or shale carbons that were in the sand when the concrete was mixed. The lignite or shale particles are lightweight and float near the surface of the slab when the concrete is installed and troweled.
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How do you get rid of bug holes in concrete?

The number of visible bug holes can be reduced by using smooth forms, free of dents, holes, or build-up, along with the proper form release agent. The right form shape also gives air voids at formed surfaces the opportunity to move upward more freely as it is displaced by the concrete.
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What are the round holes in concrete?

Mudjacking, sometimes called slabjacking or pressure grouting, is the lifting of a concrete slab or foundation, usually slabs, by pumping a concrete grout slurry under high pressure, beneath the existing concrete. Evidence of mudjacking is usually a group of holes around 1 5/8 inch to 2 inches in diameter.
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How do you fix bug holes?

How to Repair Surface Defects
  1. Outline the surface defect with a ½- to ¾-inch-deep saw cut.
  2. Remove defective concrete down to sound concrete.
  3. When chipping, leave chipped edges perpendicular to surface or slightly undercut. ...
  4. Clean substrate and remove all loose material, dust, etc.
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How to Prevent Bugholes in Concrete?



What are the small holes in sidewalk?

Holes in a concrete sidewalk appeared at first to be popouts. However, they were regularly spaced and it's more likely that they were caused by a soil aerator.
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Why are there holes drilled in my foundation?

What Are Weep Holes? Weep holes are tiny openings that allow water to drain from within your foundation walls. They're usually drilled into the base of foundation walls to allow moisture to escape. Whenever water gets into the foundation, it will drip down the back of the wall and pass through the weep holes.
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What are the holes in my foundation for?

A weep hole is a small hole that's drilled on the base of your foundation wall to provide aeration and an escape route for water. The weep hole also does the following: Improves drainage: Rainwater or moisture that gets into the concrete block or brick cavity needs to escape.
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How do you prevent pinholes in concrete?

Lower the viscosity of cement by adding sand or fly ash. This allows large aggregate to move more freely and reduces the amount of air entrapment. Use aggregate that is more uniform in shape. Irregular shaped pieces of aggregate tend to make the concrete less fluid.
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What are the causes of bug holes?

Bugholes are surface voids that result from the migration of entrapped air (and to a lesser extent water) to the fresh concrete-form interface. These surface defects manifest themselves mostly in vertical surfaces.
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What are concrete mites?

Concrete mites, also called sidewalk mites, are another tiny, bright-red mite commonly seen in Alabama. They are a complex of various species belonging to the genus Balaustium in the Erythraeidae mite family. They are called concrete mites because of the locations where they tend to aggregate.
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Can you fix pitted concrete?

Once the surface begins to pit, filling the divots with concrete is usually a temporary fix that loosens over time. You can fill pits with a bonding concrete repair material, which is similar to caulk. Restoring the porch to a more original appearance requires dressing it with a special resurfacing concrete mixture.
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Why is my new concrete driveway pitting?

Too much water can wash away the soil supporting your concrete. Too little and it can cause the soil to shrink. And when water freezes and thaws over and over and over and over again, it can cause the surface of your concrete driveway to crack, pit, and crumble.
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Why is there a small hole in my basement floor?

Unfinished Basements Have Drainage Holes

Since basements are usually the dampest floor of the home, as well as the one most likely to flood first, drainage holes are often necessary. Drainage holes are also important for the collection of excess water from baths, sinks, toilets, and other home items that may flood.
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What are the holes in my basement?

Weep holes are drilled in the concrete blocks at the lowest level. Once the block has been drilled, water exits at the holes and flows directly into the drainage system. Weep holes have the added benefit of helping alleviate pressure on your foundation walls.
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What does hole in the basement mean?

The hole is the house crumbling. UG indicated that bringing her back into the house was causing it to rot from the inside out. The episode where she's locked in and pissed as hell upstairs, Dorothy is taking a shower as you see the pipes break and burst.
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Can termites penetrate concrete?

How large of a crack in concrete is needed for termites to access? Answer: Termites cannot eat through concrete. The issue is that no matter how well poured, concrete will crack as it settles. When poured around plumbing, it will retract or shrink from around the pipes.
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What is the square hole in my basement floor?

Foundation drains are pipes that are installed under your foundation or basement floor to collect water and move it off-site to prevent your basement from filling with water.
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How do you seal holes in foundation?

  1. Go into your crawl space with a box of toothpicks or wooden matches and look for holes on each foundation wall. ...
  2. Measure holes larger than a ½ inch with a tape measure. ...
  3. Hold the hardware cloth flat over the hole and apply cement patch over the cloth with a putty knife.
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What causes concrete Popouts?

Popoffs can be a result of a poor quality concrete mixture, improper finishing, or inadequate curing practices that result in a poor bond between mortar and coarse aggregate particles. Popoffs are typically caused by pressure buildup associated with freezing of moisture in the mortar above the aggregate.
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What does spalling concrete look like?

Spalling concrete can look like round or oval depressions along surfaces or joints. Spalling tends to be most common in cold climates when de-icing chemicals are applied or when seasonal freeze-thaw cycles damage the concrete.
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Can you repair pitted concrete driveway?

Fill all cracks and large holes with concrete patch or the material you're using to resurface the driveway. If the cracks and holes are deep, fill with them with sand until they're 1/2 inch deep, then patch. Be sure to smooth it flat with a trowel, and allow the patch to dry.
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What should I use to seal my concrete driveway?

For most projects, we recommend a Siliconate penetrating sealer, like V-SEAL 101. This chemically reactive deep penetrating sealer is ideal for residential driveways, as well as ponds, fountains, statues, and other structures.
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