What causes a Dusting Concrete Surface

Dusting, chalky or powder concrete slabs or floors are a problem in many respects. Dusty concrete surfaces are not only a construction problem, it is also dangerous to have around the home or on the construction site. Dusting concrete can be caused by a number of things;

  • Extra water added to premix delivery at the site
  • Working the surface at the wrong time during installation
  • Rain affected new concrete pours
  • Rushed finishing of the concrete by concreters
  • Rapid moisture loss
  • Incorrect curing methods

The Health Risks of Concrete Dust (from the CEP Civil Engineering Portal)

Many types of cement contain other hazardous substances like lime, nickel, cobalt, and chromium compounds. Alkaline substances are corrosive to human tissues and small amounts of chromium can cause an allergic reaction.

Concrete dusting may irritate the nose, throat, and respiratory tract by mechanical abrasion, causing coughing, sneezing, and shortness of breath. Concrete dust may cause chronic bronchitis or aggravate pre-existing lung diseases such as emphysema, bronchitis and asthma.

After prolonged exposure, respirable concrete dust can cause severe damage to human lungs. Crystalline silica has been classified as a human lung carcinogen. In addition, it can cause silicosis, which is incurable. More commonly, silica dust causes the formation of scar tissue in the lungs, reducing their ability to take in oxygen.

How to Prevent a Dusting Concrete or a Powdery Concrete Slab

  • Do not add extra water to premix delivery
  • Cover with plastic before rain effects the concrete pour
  • Rushed finishing of the concrete by concreters
  • Prevent Rapid moisture loss by using a curing aid
  • Use Pro Seal 896 to seal and cure assist new concrete day of pour, plain concrete only

How to Fix a Dusting or Powdery Concrete Slab using Concrete Doctor

This problem is easily remedied and quick action is recommended. This service is best left in the hands of a Professional Certified Concrete Doctor Applicator.

Water Based Sealers only recommend Concrete Doctor for-

  • Concrete Dusting Prevention
  • Same Day of Pour Plain Concrete
  • Dusting Concrete Repairs
  • Chalky Concrete Slabs
  • Treating Powdery Concrete
  • Treating Dusting Concrete