CRAS goes to the beach

Sometimes,   Nature   is   capricious   and produces surprising rock formations, while not always in the right place. This is the case   of   the   rock   shown   in   this   report, almost one hundred cubic meters of nearly spherical geometry, which would attract the curiosity if being in a safe location, but that has been a concern for years to neighbors and authorities at Playa de San Marcos, on the   island   of Tenerife,  over   whose   roofs -and head- has been hanging this stony and rounded “sword of Damocles”, located on the access road to the port and a residential area, not far from the beach.

In a first attempt, a few years ago, to keep safe the inhabited area under the rock, it has been held with steel cables. However, erosion was undoing the rock support, increasing the danger of detachment, so the authorities decided to demolish it.

 At this point, CRAS, non-explosive demolition cement manufactured by firm Kayati SL., came into play. Once gain, the ability of this product to demolish large blocks without explosions, noises and vibrations makes the CRAS an outperforming choice to demolish a rock located in the proximity of homes and roads, which could be affected by the use of explosives.

The first step, as always when you use the CRAS, consisted in drilling the rock. Perforation was made this time by using bits of 40 mm in diameter and 1.2 meters long. CRAS mortar was poured on these perforations, conveniently distributed throughout the rock.

Thanks to the effect of the chemical reaction of hydration, an expansive force of 7,000 Tm/m2 is generated. That crashed the rock to small fragments, which can be easily removed. And, of course, the area became a safer place for residents and visitors.

In the sequence of images included in this article can be seen how the rock was originally, and what was left after use of CRAS.

For more information about the CRAS, contact Kayati SL in the following address:
KAYATI SL
Magdalena, 14 - 5º B
E-01008 VITORIA-GASTEIZ (ESPAÑA/SPAIN)
Tel. +34 945 135 626
Fax +34 945 130 592
e-mail: kayati@kayati.com
www.kayati.com
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