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.
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