- Scaling, Plugging & Grit Removal
- Reactivity & Consistency
- Materials, Equipment, Energy & Transportation Costs
- Environmental Problems
- Water & Wastewater Treatment
- Flue Gas Desulfurization
- Caustic Replacement
Hydrated Lime is used in various construction applications. Some of the most popular applications are:
Hot Mix Asphalt
In preparation of hot mix asphalt, hydrated lime is added primarily as an anti-stripping agent. More and more states are now requiring the addition of lime to reduce the effects of moisture on pavements. Pre-treating aggregates with lime helps asphalt cement to adhere to the aggregate.
Although most hot mix producers are presently using dry hydrated lime, there are a number of advantages of using hydrated lime slurry made from quicklime. The Lime-Save process has important handling characteristics that improve the process. These are:
Cold In-place Recycling
Hydrated lime slurry from quicklime is the common method of adding lime to Reclaimed Asphalt Pavement (RAP). Adding lime to RAP has become more popular as it helps reduce stripping and improves strength of pavements.
The Lime-Save process can improve existing processes in the following ways:
Again hydrated lime from quicklime is the common method of adding lime to soil for stabilizations and to existing pavement and subgrade for full depth reclamation. However, the Lime-Save process opens up a possibilities of adding lime slurry to stabilization and reclamation equipment in a way that greatly improves the ability to control rates of application.
The process allows low viscosity lime slurry that has been degritted to be pumped through mass flow meters to accurately mix the slurry in the mixing chamber of the reclaimer. The mixing equipment can be set at a constant speed. Additive rates can be pre-calculated so even the most inexperienced crew can produce a quality end result.
In addition to the foregoing, Lime-Save can improve existing processes in the following ways:
As quality aggregates become scarce, it is sometimes necessary to add lime to base course aggregates to lower the plasticity index (PI). Most existing methods use dry quicklime to production conveyors during stockpiling to accomplish PI reduction.
The Lime-Save process can improve quality control of adding lime to aggregates. In applying the process, it is important to delay the addition of the lime slurry until just before the product is loaded out to be placed on projects. The reason for this is that stockpile pressures combined with the high reactivity of wet lime slurry causes structures to be built prematurely between the aggregate particles resulting in loading problems.
The benefits of using Lime-Save are:
Lime Slurry in Hot Mix
Lime Slurry in Soil Stabilization & FDR
Phone: (602) 758-2815
Fax: (602) 391-2258