PD CEN/TS 17693‑1 is the first part in the multi-series of documents, that is applicable to the earthworks for soil treatment tests.
PD CEN/TS 17693‑1 describes the reference method for the determination of the lime fixation point (LFP) in soil treatment for earthworks. The test consists in measuring the lowest quantity of lime to be added in a soil suspension in water that will result in a pH value of the soil-lime mix suspension of 12,4, measured at 25 °C ± 1 °C.
Note 1: PD CEN/TS 17693‑1 test method cannot be used to provide information about soil reactivity with lime, or other performance values (mechanical characteristics of soil-lime mixes) applicable for improvement or stabilization purposes. Those performance tests will be conducted in a laboratory from a specific study, the lime dosage to be applied being indicated from this method.
PD CEN/TS 17693‑1 on soil treatment tests is relevant to:
Earthworks are essential for road and traffic route construction, railway construction, water engineering, landfill and tunnel development. Professional earthworks necessitate good preliminary construction design, soil research, and, depending on the project's complexity, a stability analysis.
LFP (LMO) is the theoretical lime content from which can occur the setting and hardening of soil-lime mix, resulting from the pozzolanic reactions due to the combination of lime with clay components of the soil. PD CEN/TS 17693-1 describes the reference technique for finding the lime fixation point (LFP) of soils, often known as the lime modification optimum (LMO). It can be considered as the optimal lime amount to be added in a soil in order to perform its improvement, and the minimal lime amount from which stabilization can occur.
PD CEN/TS 17693-1 assists you with determining water content, plasticity, water and frost susceptibility, compactibility, and swelling potential by the addition of lime.
PD CEN/TS 17693-1 can thus provide indication on alkalinity the health of soil, and ultimately on the structural integrity of your engineering works.
CEN/TS 17693