ANDECE presents a series of recent works in cases where the use of precast concrete elements has contributed to the latter to meet requirements such as faster execution, better control of all processes, a drastic reduction in the generation of waste and a more aesthetically pleasing appearance.
1.1 Bridge structure over the Más de los Arcos -
L.P. Castellón (Fig. 1)
Precast concrete elements used (type of concrete in each case): Lightened piles using expanded polystyrene in octagonal section (HA-60), headers, prestressed double T-beams (HP-50), deck precast slab (HP-40) and cantilever plates (HP-40) manufactured and supplied by Precon.
Abutment of precast reinforced floor panels, supplied by Alvisa,
Project Engineering: FHECOR Ingenieros Consultores.
1.2 Bridge capacity expansion using box culverts (Fig. 2)
1.3 Pipes and other precast components for storm
tanks (Fig. 3)
Innovation and ongoing improvement are an essential part of many precast concrete product manufacturing companies‘ DNA. In this case we present the tubes and special parts that Arenzana Prefabricated has designed for a storm tank:
Receive pipes of DN 2,500 mm and collector pipes of DN 2200 mm
Capacities that can be sized according to customer needs, 400 m3, 800 m3 or 1,000 m3
2.1 Precast concrete panels for the largest resi-
dential complex in Spain (Fig. 4)
2.2 GRC, or how to lighten concrete effectively for
façade cladding (Fig. 5)
GRC (glassfiber reinforced concrete) has evolved relentlessly in recent years, and is increasingly becoming the preferred choice of many architectural firms for exterior façade cladding, due to the enormous aesthetic and functional possibilities offered by this material. Together with Daniel Padron & Asociados, Arquitectos SL and the construction company Satocan, the Antonio Afonso group built a new public school on the Canary Islands. For the cladding of this modern and accessible educational infrastructure the GlassyDurPana panel was chosen. A highly resistant GRC precast product with insulating qualities, both thermally and acoustically.
2.3 Residential with different precast concrete
elements for façade and structure (Fig. 6/7)
Houses built by Construcciones San Martín where Viguetas Navarras has supplied the following precast concrete elements: Double wall, precast slab and façade. Architect: Ángel Munarriz. Neighborhood Ripagaina located in Pamplona, an area rapidly growing in the south of the city.
2.4 Stadium remodeling with concrete blocks (Fig. 8/9)
3 Urban development
3.1 Development of drainage pavement solutions (Fig. 10)
Flooding caused by rainfall can have a huge environmental and economic impacts. To help to minimize its effects, Breinco has developed Filtra slab, a permeable pavement that incorporates drainage to manage rainwater. The combination of paving and drainage ensures a pleasant natural aesthetic of infinite lines, provides comfort to pedestrians and increases the permeability percentage up to 24,000 l/(s x ha), in addition to having the ability to reduce pollution and an enormous resistance to wear and tear. Its use is ideal for parking spaces, accesses and rural roads.
3.2 Pavement resurfacing to increase pavement
service life (Fig. 11)
In the port Molinar Marina in Palma de Mallorca, the construction company ACSA has carried out this remodeling with the main purpose of extending the durability of a pavement subjected to heavy wear and tear. For this purpose, the company Paviments Lloseta has supplied 3,000 m2 of concrete tiles of the Duromarés model, in 30x60x8 and 40x60x8 cm formats, yellow color and Durobrill treatment, which prevents from efflorescence and absorption, high-strength anti-slip texture. Its use is intended for paved areas with pedestrian traffic and light traffic, such as promenades, terraces, sidewalks, squares, boulevards, gardens, etc.
3.3 Precast concrete walkways for the improve-
ment of beach accessibility (Fig. 12)
The Municipal District of Vera (Almeria) has about 5 km of coastline, which main feature is that it is entirely a fine sandy beach, with an average width of about 200 m, so you have to walk a long distance on the sand to reach the seashore. Until now, the entire coastline has been equipped with wooden walkways, but their greater deterioration (weather, wear and tear due to the transit of people, maintenance and cleaning vehicles crossing them, and even vandalism) requires major investments in repair and maintenance. To solve this permanent problem, extending the durability of the walkways as long as possible, AG Premoldeados has designed and manufactured precast concrete slabs (HA=50), waterproofed and colored in mass, with a surface texture that resembles wood itself, but with the differentiating features of concrete.
In this summary of works with precast elements in the first half of 2021, we have tried to highlight the advantages offered by this construction technology, in a context of growing demand for increasingly industrialized solutions. Whether for the construction of buildings, the creation of civil engineering infrastructures or the development of urban areas, the common denominator of precast concrete elements is greater control throughout all phases of the construction process.