Om Materialprøvningens Udvikling i Norden
Og om Statsprøveanstaltens Virksomhed
År: 1909
Sted: Kjøbenhavn
Sider: 185
UDK: 6201(09)
Emne: Trykt hos J. Jørgensen & Co. (M. A. Hannover)
On the development of testing of materials in the north and on the work of the danish states testing laboratory in Copenhagen (english translation)
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134
through Seipp’s test of resistance to the weather, whereas the
Bremer-sandstones held their own much better than both of
Table IV. Tests of Resistance to Wear with Clinkers, Concrete-
Flags and Other Stone Materials.
Loss of height in mm Earthen- ware Concrete-flags and Cement-flags
Clinkers Flags
up to 1 mm . . . 1 2 12
from 1,1— 2 — . . . 30 4 43
_ 2,1— 3 — . . . 19 6 19
. 3,1— 4 — . . . 6 4 7
. 4,1— 5 — . . . 13 6 4
. 5,1— 6 — . . . 7 5 2
. 6,1—10 — . . . 12 7
- 10,1—16 — . . . 5 3
- 16,1—20 — . . . 3
Number of Sorts. . . 93 40 87
Granite and Gneiss Marble Lime-stone Asphalt Flint
16 12
3 2 12 2
1 2 7
1 4
1 1
1
altogether
19 4 2 26 14 285
Loss of weight
in g pr. sq. cm
of area subjected to
abrasion
from 0,1 —0,2g
- 0,21—0,3 -
. 0,31—0,4 -
- 0,41—0,5 -
- 0.51— 1 -
- 1,1-2-
-2,1—3-
-3,1—4-
-4,1—5-
- 5,1 — 6 -
- 6,1 — 7 -
- 7,1 — 8 -
4
6
14
16
25
22
6
3
2
1
13
2
9
3
4
1
1
1
7
20
15
19
25
1
9
10
1
4
19
2
16
Number of Sorts.
93 40 87 19
altogether
287
1
2
1
The loss of height has not been entered for two sorts of flint.
them. On the building being restored later on fluating was em-
ployed on a large scale in those stones that could be restored, but
where exchange was necessary, Bremer-sandstones were em-
ployed. According to researches made the Laboratory was able