Buzzi Unicem S.p.A. is an Italian company, quoted on the Borsa Italiana, which produces cement, ready-mix concrete and construction aggregates. Its headquarters are in the town of Casale Monferrato which was once known as the Italian ‘cement capital’. Today it has subsidiaries, interests and operations in Italy, Luxembourg, Germany, Algeria and Eastern Europe as well as in North America.The company was formed in September 1999 when Buzzi Cementi took over Unicem , and took on the name of Buzzi Unicem.In 2004 the group acquired control of the German cement company Dyckerhoff .The current Chairman is Sandro Buzzi; Chief Executives are Pietro Buzzi and Michele Buzzi . Wikipedia.
Bassani M.,Polytechnic University of Turin |
Sacchi E.,Polytechnic University of Turin |
Canonico F.,Buzzi Unicem
Journal of Materials in Civil Engineering | Year: 2012
Surveys on innovative materials for aircraft arrestor beds are of great interest in airport safety research. In the event of a runway overrun, the arrestor bed has to provide for the complete stop of the aircraft. In doing so, the bed essentially collapses under the effect of the vertical load of the nose and main gears. Along the contact areas between the wheels and bed, the horizontal drag forces generated depend on the dissipative properties of the material used in the bed. The use of innovative materials in arrestor beds could lead to a significant improvement in the performance of same. In the paper, the authors propose a cellular mortar with expanded polystyrene spheres and the use of static and dynamic tests to determine its characterization. The aim is to optimize its composition in terms of mechanical properties, to evaluate its durability under the effects of environmental actions, and to estimate the stopping distances for selected aircrafts. The code arrestor provided by the Federal Aviation Administration (FAA) was used as a reference for distance calculations. © 2012 American Society of Civil Engineers.
Ganora M.,Buzzi Unicem
Geoingegneria Ambientale e Mineraria | Year: 2011
In Ivory Coast, 450 km west of Abidjan, was built in the late '70s, the hydraulic structure of Buyo, with a catchment of 8.4 billion m 3 of water and three 55 MW turbines power. The dam was built with a dam 2,612 m long in the land that needs a major maintenance. The first section of the maintenance works with a length of 400 m was sealed with a plastic diafram performed by Trevi SpA Company. For its construction has used 3,700 tons of cement SOLIDUR 274 Special ®, manufactured at the Settimello Buzzi Unicem plant (FI).
Buzzi S.,Buzzi Unicem
ZKG International | Year: 2014
Municipal Solid Waste (MSW) as well as pure fractionsof commercial industrial waste (CISW) can be pre-processed mechanically to "Carbon Verde (CBV)" CBV can subst.
Vigone M.C.,Vita-Salute San Raffaele University |
Caiulo S.,Vita-Salute San Raffaele University |
Di Frenna M.,Vita-Salute San Raffaele University |
Ghirardello S.,University of Milan |
And 3 more authors.
Journal of Pediatrics | Year: 2014
Objective To determine the evolution of congenital hypothyroidism in preterms and the clinical features of permanent forms. Study design We retrospectively evaluated 24 preterm children detected by newborn screening for congenital hypothyroidism: first screening with blood-thyroid stimulating hormone cutoff 10 mU/L and second screening with blood-thyroid stimulating hormone cutoff 5 mU/L. After the age of 2 years, patients with eutopic thyroid had diagnostic reevaluations, including thyroid function testing and thyroid ultrasonography after L-thyroxine therapy withdrawal. Results The first screening identified 21.7% of patients with thyroid stimulating hormone elevation, and the second screening identified 73.9% of patients. One patient (4.4%) was identified with a third screening test; 21 patients had an eutopic thyroid and 3 patients a thyroid dysgenesis. At reevaluation, 5 patients (23.8%) showed permanent hypothyroidism (serum-thyroid stimulating hormone [s-TSH] >10 mU/L) resulting in the need to reintroduce therapy, 5 patients (23.8%) showed persistent hyperthyrotropinemia (s-TSH 5-10 mU/L), and 11 infants (52.4%) transient hypothyroidism (s-TSH <5 mU/L). The main clinical features of patients affected by permanent hypothyroidism were 1 case of assisted reproduction, 2 twins, 2 small for gestational age, 1 maternal thyroiditis, and 2 patients with malformations/syndromes. Conclusions Premature birth is a significant risk for congenital hypothyroidism with eutopic thyroid. In preterm infants, the evolution of congenital hypothyroidism remains difficult to predict. Our data emphasizes the high incidence of transient hypothyroidism in preterm infants, and the importance of diagnostic reevaluation to determine the definitive diagnosis. © 2014 Elsevier Inc. All rights reserved.
Formia A.,Polytechnic University of Turin |
Irico S.,Buzzi Unicem
Cement International | Year: 2015
This paper shows the main results achieved during the DualCem project concerning the development of self-healing technology for concrete. The results were achieved through the collaboration between several industrial partners and an academic institute. The project aims to investigate two key technological factors of a self-healing concrete system: on one side the efficiency of different healing agents and, on the other side, the encapsulation technology. With regards to the first aspect, different healing agents such as sodium and potassium silicate, acrylic resins and tannins were tested and evaluated in terms of adhesion and mechanical strength properties. Concerning the encapsulation technology, two main solutions were investigated. One involved the encapsulation of sodium silicate solution with technical equipment specifically designed for this purpose. The second examined the use of extruded cementitious hollow tubes (CHT) with different diameters as containers and vehicles for cement mortar healing agents. This latter type of capsules showed good mechanical properties and were able to survive the mixing. Three-point-bending tests were performed to characterize the self-healing effectiveness of the systems with extruded cementitious hollow tubes and promising results have been achieved on concrete samples produced with the addition of the above-mentioned tubular capsules filled with sodium silicate. In terms of mechanical strength recovery, the self-healing effectiveness of the technology proposed was observed even in specimens presenting large cracks (> 1 mm). On the basis of these data, a self-healing concrete prototype has been developed.