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See also : PALMER : D3O ... LAGIEWKA : Shock ABsorber
http://www.homelandsecuritynewswire.com/dr20131011-guardrails-made-safer-with-impactabsorbing-mediterranean-tapeweed-coating
11 October 2013
Guardrails made safer with impact-absorbing Mediterranean tapeweed coating
Researchers have developed protective guardrails from residue of Posidonia oceanica,commonly known as Neptune Grass or Mediterranean tapeweed, in order to minimize the risk of injuries on the roads. The waste material is useful for coating the support posts of guard rails on roads so they can absorb and dissipate much of the kinetic energy if a collision occurs, preventing lacerations and amputations in cases in which a human body hits the support post.
Researchers at the University of Alicante developed protective guardrails from residue of Posidonia oceanica, commonly known as Neptune Grass or Mediterranean tapeweed, in order to minimize the risk of injuries on the roads.
The technology, patented by the research group Tecnología de Materiales y Territorio, is useful for coating the support posts of guard rails on roads so they can absorb and dissipate much of the kinetic energy if a collision occurs, preventing lacerations and amputations in cases in which a human body hits the support post.
An RUVID release reports that the device consists of an impact-absorbing coating made from a mixture of Posidonia oceanica residue with organic or inorganic hydraulic binders.
This mixture, explains Professor José Miguel Saval Perez, who headed the research, “is done by kneading the previously dry waste components and binder, later adding water and prolonging their kneading. After the mixing, the material is introduced into a mold which produces compaction. Then we immediately proceed to the demolding of the part, allowing it to cure at room temperature. ”
“We also provide for the use of additives such as commercial dyes compatible with the binder used, so that the color can be varied depending on the absorber signaling needs and the environment through which the communication path passes” adds José Miguel Saval.
Tests have been conducted for the impact energy absorption of 4,116 joules, that is, the absorption of the impact of a body weighing 75 kg, which smashes into the bracket at an approximate speed of 38 km/hour. Additional tests were performed under load deformation, with results suggesting that the material absorbs about 40 percent of the load transmitted.
The option of using Posidonia oceanica residue feedstock for the shock absorber provides an alternative use of such waste, while avoiding raising the economic and environmental costs of manufacturing safer guardrails and barriers.
http://translate.google.com/translate?js=y&prev=_t&hl=es&ie=UTF-8&sl=es&tl=en&u=http://ruvid.webs.upv.es
10/08/2013
The UA patents a protective guardrails with Posidonia residues
UA-protector-Posidonia Researchers at the University of Alicante protector developed from waste guardarraíles Posidonia oceanica, in order to minimize the risk of injuries on the roads.
The technology, patented by the research group Materials Technology and Territory, is useful for coating the supports safety fences on the roads, and to absorb and dissipate much of the kinetic energy in a collision occurs, avoiding lacerations and amputations in cases where the human body is the one that hits the support.
The device consists of an impact absorbing member made from a mixture of Posidonia oceanica residue with organic or inorganic hydraulic binders.
This mixture, explains Professor José Miguel Saval Perez, head of research "is done kneading the components previously dry waste and binder, later adding water and prolong their kneading. After their mixing, is introduced into a mold which produces compaction. Immediately proceeds to the demoulding of the part, allowing it to cure at room temperature. "
"There is also provided the use of additives such as commercial dyes compatible with the binder used, so that the color can be varied depending on the absorber signaling needs and environment through which the communication path passes" adds José Miguel Saval.
Tests have been conducted for the impact energy absorption of 4116 joules, i.e., absorb the impact of a body whose weight was 75 kg, which impacts against the bracket at an approximate speed of 38 Km / hour. Additional test were performed under load deformation of which suggests that the material absorbs about 40% of the load transmitted.
The option of using Posidonia oceanica residue feedstock for the shock absorber provides an alternative use of such waste, while avoiding raising the economic and environmental costs of manufacturing safety fences barriers.
[ Espacenet machine translation ]
IMPACT ABSORBER WASTE FROM OCEAN POSIDONIA
ES 2405281
[0002] Impact Absorber waste from Posidonia Oceanica.
[0003] Field of the Invention
[0004] The present invention is in the field of security and refers to an item made from mixtures of Oceanic Posidonia residues and organic or inorganic binders, which allows the human body protection against the impact in an accident.
[0005] STATE OF THE PRIOR ART
[0006] Due to the swell, the Posidonia arribazones are deposited regularly on beaches.
The losses from the leaves of these plants are due to the same causes of deciduous forests emerge from his.
These contributions are treated almost exclusively as organic waste is transported to dumps quot; legalizadosquot, at best, resulting in significant economic and environmental costs.
Special mention deserves the difficulty posed by these waste compaction and sealing deposited in landfills due to the cushioning effect they produce.
[0007] On the other hand, the European Commission for Standardization (CEN) has recently updated the guidelines and specifications of containment systems in road vehicles.
This legislation remains open to technical innovations that could be developed in the future.
Among other things, points out the rules to the effect that, where possible, be recommended replacement or repositioning of type profiles quot; Cquot, in brackets safety fences barriers.
It is true that vehicle restraint systems work very well in terms of protection of the vehicle before an accident, given his behavior as energy sink, redirect enabler, possibility of being stamped, great deformity, etc..
However, all these properties have no effect when the impacting object is the human body, resulting in the same endless traumatic injuries, amputations, if not instant death.
[0008] The various known impact absorption systems use a base material coated supports safety fences.
For example, PVC elements are used to envelop the metal profile. In this way, it is true that protect the cut, however the sink and absorption effect is practically nil. To overcome this drawback we proceed to filled with sand.
Similarly, other known coating systems based metal support shaped elements made of expanded polyethylene, in which the damping effect is better than PVC coating but with high economic impact.
[0009] The option of using posidonia residue feedstock for the shock absorber provides an alternative use of said waste, while avoiding raising the economic and environmental costs of manufacturing safety fences barriers.
[0010] SUMMARY OF THE INVENTION
[0011] It is necessary in light of the above, looking for a
[0012] item that is designed to absorb and dissipate achieve much of
[0013] 5 the kinetic energy with which the collision with the stand, and his
[0014] Once avoid lacerations and amputations in cases where the body is
[0015] human that said supports hits.
[0016] The invention is a shock absorber element manufactured
[0017] 1O from a mixture of waste with posidonia
[0018] Organic or inorganic hydraulic binders. Said mixture
[0019] performed previously kneading dry components (waste and
[0020] binder), and later add the water and prolong
[0021] kneading. After their mixing, is introduced into a mold which produces
[0022] 15 compaction. Immediately proceeds to the demoulding of the part,
[0023] leaving the same cure temperature. Also envisaged
[0024] The use of additives such as commercial dyes, compatible
[0025] with the binder used, so that the color can be varied
[0026] absorber according to the needs of signage and environment by
[0027] 20 that passes the communication path.
[0028] The described absorber can be installed on the metal supports of the
[0029] barrier safety fences, providing the following advantages:
[0030] Reuse posidonia residue, thereby reducing the
[0031] 25 environmental impact of transport to landfills.
[0032] Minimizing the risk of injury from the supports
[0033] safety fences metal barriers.
[0034] Improvement of impact absorption properties compared to
[0035] Other materials such as PVC.
[0036] 30-Low cost of manufacturing the absorber.
[0037] BRIEF DESCRIPTION OF THE FIGURES
[0038] Figure 1. W-beam barrier metal bracket coated with impact absorber made from residue of Posidonia Oceanica.
[0039] Figure 2. Cross section of the metal support coated with the impact absorber made from posidonia residue.
[0040] DETAILED DESCRIPTION OF EMBODIMENTS
[0041] Given the large number of existing brackets on the roads and the cost involved in the disassembly of the beam or signage to introduce the absorber element, around the metal profile is adopted as shown in Figures 1 and 2, which coating allows all areas of possible impact of the body against the support without disconnecting.
The absorber 3 is placed covering the substrate 2, below the barrier bionda 1.
Such an arrangement involves placing an anchoring element ensuring fastening of the absorber with the carrier. This anchor consists of a thin sheet of PVC which is fixed by screw connection to the absorber.
[0042] The absorber is made by mixing residue Posidonia Oceanica with organic or inorganic hydraulic binder. The mixture is made by kneading previously dry components (residue and binder) for 30 seconds and subsequently adding water and mixing to prolong a time of two minutes. All, to obtain a mixture volume quantity of 500 liters.
The mixture obtained is filled a mold with the desired shape of the absorber and allowed to cure at room temperature for 3 days.
[0043] Independent of the object of the invention the various hydraulic inorganic or organic binders used in their manufacture, preferably by arranging for reasons of durability, economy and availability, hydraulic inorganic binders, which correspond to the following mixing ratio by weight:
[0044] binder: Posidonia: Water -7 1: 1: 2
[0045] Also, be independent of the subject invention, the shapes and dimensions of the absorber, as well as all the details that may arise, as long as it does not affect its essence.
However, we propose the following dimensions:
[0046] Outer diameter: 25 cm
[0047] Wall thickness: 8 cm
[0048] Height: as metal support
[0049] With these dimensions, there have been trials of impact energy absorption of 4116 joules, ie absorb the impact of a body whose weight was 75 kg, which golpease against the support at an approximate speed of 38 Km / hour. Moreover, trials have been conducted under load deformation which shows that the material absorbs about 40% of the load transmitted.
MORTERO DE CEMENTO CON CENIZA DE POSIDONIA OCEANICA
ES2405282
AGLOMERADO DE POSIDONIA OCEANICA PARA SU USO EN ELEMENTOS DE MOBILIARIO DE ZONAS DE PLAYA
ES2405280
USE OF THE MEDITERRANEAN SEA GRASS POSIDONIA OCEANICA FOR THE PRODUCTION OF ORGANIC COMPOST
GR99100348
Procedure for repopulating a sea bed with marine phanerogams
ES2069504
Procedure for transplanting cuttings of Posidonia Oceanica
FR2695536