Standard Specifications For Pressure Cleaning Concrete Pavement.pdf
PDF 2 MB Posted
- Attached to
- Maxwell AFB - Airfield Repairs - Amendment 0006
- Solicitation number
- FA330026R0003
About this file
This document is a Standard Specification for Pressure Cleaning Concrete Pavement at Maxwell Air Force Base in Alabama. The specification details comprehensive requirements for cleaning concrete surfaces, including removing stains, dirt, pollution, leachates, oil, grease, unauthorized paint marks, invasive vegetation, and other discolorations. The cleaning objective is to restore concrete surfaces to their original color without damaging the structural integrity.
The specification mandates using pressure water blasting equipment capable of delivering nozzle pressures between 3,000-5,000 psi, with a range of nozzle types and stream patterns. Brushes used must have natural, non-ferrous, or stainless-steel bristles. The cleaning process involves pressure water blasting, with manual and automatic brushing allowed at the Engineer's discretion. If discoloration persists, surfaces will be brushed and the water blasting repeated as necessary. Measurement for the cleaning work will be on a single lump sum basis, covering all exposed concrete surfaces of the structure's beams.
View the file
Other files
Show all 26
On GovTribe
Work with this file
- Download the original file
- Contacts named in this file
- Similar government files
- Ask GovTribe AI about this file
Text version
STANDARD SPECIFICATIONS
FOR
PRESSURE CLEANING CONCRETE PAVEMENT
MAXWELL AFB, AL
1.General
The work shall consist of cleaning concrete surfaces by removing all stains, dirt, dust, deposits, pollution, leachates, oil, grease, efflorescence, calcium carbonate deposits and build-up, unauthorized paint marks, undifferentiated spills, tail pipe emission pollutants, moss, lichen and other invasive vegetation; animals and animal wastes, and any other discolorations from the exposed concrete surfaces; and to contain and dispose of the waste stream and all materials and solvents used in the cleaning process in a safe and approved manner. “Cleaning” shall also mean removing loose concrete surface material that has resulted from scaling and spalling.
The objective of cleaning is to return the color of all exposed concrete surfaces to the original color, as closely as possible, of the newly built condition, recognizing that different structural elements had different original colors and architectural finishes.
The performance of the work should clean all the exposed concrete surfaces without removing sound structural concrete or diminishing in any way the existing structural sections of the structural members. The methods, techniques, and equipment used in the cleaning, and in the containment and disposal of waste processes shall always be at the discretion of the Engineer.
The Contractor shall not use equipment, methods, or solvents that will cause spreading of existing stains, drive existing surface pollutants further into the concrete, or add new areas of discoloration. The cleaning methods to be used shall be pressure water blasting; manual brushing; and automatic brushing.
2. Materials
The Contractor shall use fresh water from a potable water source.
3. Equipment
The pressure water blasting equipment shall be capable of delivering nozzle pressures between 3,000 psi and 5,000 psi. The Contractor shall provide, and have on hand, a full range of nozzle types and stream patterns from a flat fan to a straight jet tip. Nozzle pressures more than 5,000 psi will likely cause damage to the concrete pavement and will not be allowed. Brushes used to loosen dirt, pollutants, and calcium deposits shall have natural, non-ferrous, or stainless-steel bristles. Brushes that have ferrous bristles shall not be used. Both manual and automatic brushing will be allowed at the discretion of the
Engineer.
4. Construction Requirements
Surfaces to be cleaned shall be pressure water blasted. If discoloration persists on the surface, the surfaces shall be brushed and then the pressure water blasting procedure shall be repeated as many times as necessary to remove the dirt, pollution, rust stains and calcium deposits, or until the Engineer directs otherwise.
After pressure water blasting, the surface shall be allowed to thoroughly dry before a final determination is made as to the necessity of repeating the procedure. Once a surface has been cleaned, subsequent cleaning operations shall be conducted to not get the newly cleaned surface dirty.
5. Method of Measurement
The measurement for cleaning concrete surfaces shall be on a single lump sum basis, which lump sum shall include cleaning all exposed concrete surfaces of the structure.
beams.
File details come from the government source that posted it. Updated .