Abstract:
Soil stabilization has long been recognized as the proven solution to dramatically improve in-situ soil properties. It is the smart alternative to the traditional remove and replace option. By simply mixing lime or cement into in-situ material, one can eliminate costly export and import operations. Building pads, roadways, airports and all projects that require high strength and high modulus soil are ideal candidates for soil stabilization.
This same process can be applied to the construction of Load Transfer Pads (LTPs) . LTP construction using soil stabilization offers multiple benefits, including safer working platforms, cost savings, reduced schedule through improved construction operations, and a more sustainable solution for the environment. LTPs are traditionally constructed of reinforced concrete or granular structural fill (with or without layers of geosynthetics) to efficiently transfer loads, above an LTP, to ground improvement elements below an LTP.
The presentation will cover the design and construction of LTPs using traditional methods and then contrasted using the soil stabilization alternative. Several projects have been constructed in California using Soil stabilization LTPs. These projects will be showcased to illustrate the process for designing and verifying the soil stabilization mix design through construction and provide some design recommendations for future projects