Description:
Carmeuse is proud to deliver high-performing products to meet your specific needs. This could not be truer than with Construction Quicklime (CQL). CQL is an innovative approach to the manufacturing of quicklime designed to meet the evolving needs of the construction industry. At its core, CQL features fine particles of quicklime, chemically known as calcium oxide (CaO), or commonly referred to as lime, to drive chemical reactions desired in many soil applications. Lime is a widely used chemical compound that originates from calcium carbonate (limestone) and is primarily made up of calcium, magnesium and small amounts of other chemical compounds depending on the formation of the originating limestone.
Construction quicklime is derived from select limestone deposits and is routinely tested for quality and consistency, to ensure the right chemical and physical properties for construction applications.
Benefits:
- Compaction can be done in 4 hours or less, depending on soil type.
- Less mixing is required, especially in low to moderately plastic soils.
- Increased load capacity compared to traditional quicklime.
- Compatible with a broader range of spreader trucks, increasing spreading versatility.
- Accelerates project schedules with reduced mellow time and no need to remix before compaction.
- Early strength development ensures a stable platform for quicker building.
For additional information, to view our Product Typical Sheets or to discuss availability with our sales group, please contact us.
DOCUMENTATION
For additional information, to view our Product Typical Sheets, or to discuss availability with our sales group, please contact us.
Specifications
Typical Ranges are below.
General specifications are listed for your convenience but please contact us by email or phone for further guidance.
Calcium oxide and magnesium oxide (CaO + MgO): > 90%
Size range: 100% passing 3/16” >50% passing 50-mesh
Reactivity: 21.7 – 36.3 °C minimum 3-minute heat rise
CQL has a significantly higher surface area, allowing for faster hydration and accelerated chemical reactions, which reduces the time required for soil stabilization. Additionally, CQL’s finer particle size distribution, being twice as fine as traditional quicklime fines, enhances its ability to mix and homogenize with soil. This results in a more uniform mixture that speeds up the transformation of unsuitable soil into viable construction material, crucial for meeting demanding construction schedules.
A mellow period allows for the complete hydration of quicklime before final compaction. Utilizing a soil reclaimer and adequate water during mixing typically reduces the mellow period required to 4 hours or less. A cure period begins after final compaction and is required until adequate strength is obtained to produce a sufficient working platform capable of withstanding anticipated construction traffic.
For drying applications, where a rapid decrease in moisture content is desired to meet compaction goals, dose rates are usually 1% to 3%. For soil modification and stabilization, where improving engineering properties is needed, dose rates tend to be in the > 3% range. Lab testing (ASTM D6276) is needed to determine the minimum dose rate needed for stabilization.
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