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BSI PD CEN/TS 12390-9:2016 – TC:2020 Edition

BSI PD CEN/TS 12390-9:2016 – TC:2020 Edition

$217.84

Tracked Changes. Testing hardened concrete – Freeze-thaw resistance with de-icing salts. Scaling

Published By Publication Date Number of Pages
BSI 2020 80
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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. NOTE 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. Change of parameters of the testing procedure may have artefacts, some of which explained in Annex A.

PDF Catalog

PDF Pages PDF Title
48 Contents Page
49 European foreword
50 Introduction
51 1 Scope
2 Normative references
3 Terms and definitions
52 4 Making of test specimens
5 Slab test (reference method)
5.1 Principle
5.2 Equipment
53 5.3 Preparation of test specimens
54 Figure 1 — Location of test specimen and test surface in sawn cube
55 Figure 2 — Sealing the test specimen
Figure 3 — The test set-up used for the freeze–thaw test
56 5.4 Test procedure
Figure 4 — Time (t) -temperature (T) cycle in the freezing medium at the centre of the test surface
57 Table 1 — Points specifying the shaded area in Figure 4
58 5.5 Expression of results
5.6 Test report
59 6 Cube test (alternative method)
6.1 Principle
6.2 Equipment
60 Figure 5 — Container with specimens
61 Figure 6 — Container with cubes and temperature sensor
6.3 Preparation of test specimen
6.4 Test procedure
62 Figure 7 — Temperature behaviour pattern in the centre of a cube
63 Table 2 — Points specifying the shaded area in Figure 7
6.5 Expression of the results
64 6.6 Test report
65 7 CF/CDF-test (alternative method)
7.1 Principle
7.2 Equipment
66 Figure 8 — Principle arrangement of the CF/CDF-test during the freeze–thaw cycles
67 7.3 Preparation of test specimens
Figure 9 — Arrangement of PTFE plates
68 7.4 Test procedure
Figure 10 — Temperature curve
69 Table 3 — Points specifying the shaded area in Figure 10
70 7.5 Expression of test results
7.6 Test report
71 8 Precision data
72 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
73 Annex A (informative) Alternative applications
76 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
77 Figure B.1 — Brush characteristics
B.2.4 Shape
B.2.5 Wear indicator (recommended, not mandatory)
78 Bibliography

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BSI PD CEN/TS 12390-9:2016 - TC
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