BSI PD CEN/TS 17693-1:2021:2022 Edition
$102.76
Earthworks. Soil treatment tests – pH-test for determination of the lime requirement of soils for stabilization (Lime Fixation Point LFP, Lime Modification Optimum LMO)
| Published By | Publication Date | Number of Pages |
| BSI | 2022 | 20 |
This document 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. This 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.
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 2 | undefined |
| 7 | 1 Scope 2 Normative references 3 Terms, definitions, abbreviations and symbols 3.1 Terms |
| 8 | 3.2 Symbols and abbreviated terms |
| 9 | 4 Principle of the test 5 Reagents 5.1 Lime 5.2 Water |
| 10 | 6 Apparatus 7 Preparation of the test portions 7.1 If Dmax is greater than 50 mm 7.2 If Dmax is ranging between 5 mm and 50 mm |
| 11 | 7.3 If Dmax is smaller than or equal at 5 mm 8 Test procedure 8.1 Water calibration of the pH-meter |
| 12 | 8.2 Main test procedure 8.3 Alternative test procedure |
| 13 | 9 Expression of results and determination of the LFP (LMO) of the soil 9.1 General 9.2 pH vs added lime graph 9.3 Conversion of quicklime to hydrated lime concentration |
| 14 | 9.4 Abnormal or out of range pH results 10 Test report |
| 15 | Annex A (informative)Example of a test data sheet |
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