ROAD CONSTRUCTION WITH RRP-SPECIAL
Test / Testemonials and Guarantees, AVI-File
MOVIE (complete)
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1. General
The firm of M. Tschache, Lampertheim, markets the soil stabilizing agent called Reynolds Roadpacker 235. This chemical so alters the properties of cohesive soils that the individual soil colloids are no longer able to absorb water in the form of interstitial pore water. Soils treated with RRP therefore cannot soften. The main effect, however, is that cohesive soils, when proces-sed in this way, can be compacted by rollers in the same way as non-cohesive soils. It is thus possible to construct road pavements on cohesive soils which otherwise woult become soft and impassable as a result of rain and vehicular traffic. The technique of this "chemical road-building" will not be considered here. The presen writer was entrusted with the investigation of a road in the grounds of the Johannes-Anstalt at Mosbach.
2. Test procedure and results
The road consisted of loam processed with RRP and comprising a 3 cm thick rolled-in wearing course of stone chippings.
The "Supplementary technical regulations and directives for earthwork in highway engineering" (ZTVE-StB 65) specify:
3.124.5 The compactness in cuttings or at ground level should be at least:
3.1247 c-) For a concrete surfacing resting directly on the subgrade and for medium to heavily trafficked roads the bearing capacity on the surface ot the sub-base (frost blanket) or, if no sub-base is provided, on the subgrade, must be:
E2 1200 kg/cm2
The bearing capacity E2 determined by plate bearing tests is allowed to be reduced to F 2 1000 kg/cm on lightly trafficked roads.
The plate bearing test was performed in accordance with the requirements of the Federal Highway Engineering Laboratory (Bundesanstalt fuer Strassenwesen) as published in "Soil testing methods for highway structures". The result has been plotted as a pressure/settle-ment curve in Appendix 1.
The bearing capacity was found to be Ev2 4000 kg/cm2. It thus attained a value which is many times higher than that required by ZTVE-StB 65 for heavily trafficked roads, e.g., motor-ways.
The bearing capacity Ev1 = 2250 kg/cm2 is almost twice as high as would be required for motorways. The compaction ratio Ev2 : Ev1 is thus of no significance in this case.
In conclusion it can therefore be stated that the base of the road processed with RRP attains bearing capacities which are sub-stantially higher than those required for motorways under the ZTVE-StB 65 regulations.
Here you can see the complete test with signature
and seal:
Plate Bearing Test Page 1 |
Plate Bearing Test Page 2 |
Plate Bearing Test Diagram |
Fresenius Test Page 1 |
Fresenius Test Page 2 |
Fresenius Test Page 3 |
Fresenius Test Page 4 |
ENVIRONMENT TESTS
FROM GERMAN AND SWISS AUTHORITIES (not translated)
Insurance Page 1 |
Insurance Page 2 |
Insurance Page 3 |
Insurance Page 4 |
1. The guarantee that soil correctly treated and
carefully compacted according to the application instructions and suitable
for the treatment with RRP-Special, can no longer suffer damage caused
by frost and water, which could affect the superstructure.
2. The bearing capacity of the soil treated with
RRP-Special can only be achieved by carefully compaction with the roller.
Accordingly, plate bearing test values can be ascertained, which are not
possible with untreated soils.
 |
3. In the case of soil, correctly treated and
compacted according to the instructions, damage caused by capillary water
can no longer occur.
4. Reynolds Roadpacker Special 1-3-5 cannot be washed out of soil treated and compacted according to the instructions. 5. When it is correctly diluted with water and applied according to the instructions, Reynold Roadpacker 2-3-5 Spezial is completely harmless and poison-free as regards humans, animals, plants and ground-water. |
Beside others do we have in German language (and not listed here):
| RRP Site | How does it work? | Scientific | Price + Conditions | RRP Downloads | CH Non-Food Import-Export Corp |
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