BSI PD CEN/TS 12390-9:2016
$167.15
Testing hardened concrete – Freeze-thaw resistance with de-icing salts. Scaling
| Published By | Publication Date | Number of Pages |
| BSI | 2016 | 36 |
This Technical Specification describes the testing of the freeze-thaw scaling resistance of concrete both with water and with sodium chloride solution. It can be used either to compare new constituents or new concrete compositions against a constituent or a concrete composition that is known to give adequate performance in the local environment or to assess the test results against some absolute numerical values based on local experiences.
Extrapolation of test results to assess different concretes, i.e. new constituents or new concrete compositions, requires an expert evaluation.
In some cases the test methods may not be suitable for testing special concretes e.g. high strength concrete or permeable concrete. In these cases the result needs to be treated with caution. Also, the testing methods included in this document may not identify aggregates that are subject to occasional ‘pop-outs’.
There is no established correlation between the results obtained by the three test methods. All tests will clearly identify poor and good behaviour, but they differ in their assessment of marginal behaviour. The application of different acceptance limits for test results enables assessment for different degrees of exposure severity. In case of justified modifications of the test parameters, precautions might apply. Some alternative applications are described in Annex A.
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 4 | Contents Page |
| 5 | European foreword |
| 6 | Introduction |
| 7 | 1 Scope 2 Normative references 3 Terms and definitions |
| 8 | 4 Making of test specimens 5 Slab test (reference method) 5.1 Principle 5.2 Equipment |
| 9 | 5.3 Preparation of test specimens |
| 10 | Figure 1 — Location of test specimen and test surface in sawn cube |
| 11 | Figure 2 — Sealing the test specimen Figure 3 — The test set-up used for the freeze–thaw test |
| 12 | 5.4 Test procedure Figure 4 — Time (t) -temperature (T) cycle in the freezing medium at the centre of the test surface |
| 13 | Table 1 — Points specifying the shaded area in Figure 4 |
| 14 | 5.5 Expression of results 5.6 Test report |
| 15 | 6 Cube test (alternative method) 6.1 Principle 6.2 Equipment |
| 16 | Figure 5 — Container with specimens |
| 17 | Figure 6 — Container with cubes and temperature sensor 6.3 Preparation of test specimen 6.4 Test procedure |
| 18 | Figure 7 — Temperature behaviour pattern in the centre of a cube |
| 19 | Table 2 — Points specifying the shaded area in Figure 7 6.5 Expression of the results |
| 20 | 6.6 Test report |
| 21 | 7 CF/CDF-test (alternative method) 7.1 Principle 7.2 Equipment |
| 22 | Figure 8 — Principle arrangement of the CF/CDF-test during the freeze–thaw cycles |
| 23 | 7.3 Preparation of test specimens Figure 9 — Arrangement of PTFE plates |
| 24 | 7.4 Test procedure Figure 10 — Temperature curve |
| 25 | Table 3 — Points specifying the shaded area in Figure 10 |
| 26 | 7.5 Expression of test results 7.6 Test report |
| 27 | 8 Precision data |
| 28 | Table 4 — Functional relation between scaling and repeatability and reproducibility of coefficient of variation (scaling with 3 %-sodium chloride solution) Table 5 — Precision data for appropriate scaling level |
| 29 | Annex A (informative) Alternative applications |
| 32 | Annex B (informative) Guideline for selection of brush B.1 General B.2 Construction data and characteristics of the brush B.2.1 Nature of the materials of hair, shore hardness, tip form B.2.2 Body dimensions B.2.3 Number of holes per brush, number of hairs per hole |
| 33 | Figure B.1 — Brush characteristics B.2.4 Shape B.2.5 Wear indicator (recommended, not mandatory) |
| 34 | Bibliography |
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BSI PD CEN/TS 12390-9:2016 – TC:2020 Edition
Tracked Changes. Testing hardened concrete – Freeze-thaw resistance with de-icing salts. Scaling Published By Publication…
