QUARRY AND AGGREGATES
ANEFA report on aggregates sites. Landscape after the battle
By the end of 2014, ANEFA has made a report on the situation of the aggregates industry, which summarizes the replies to the survey made by the members of ANEFA and of three of its member associations (AFAPA, AFA- Andalusia and AFARCYL).
The report shows a sector hardly hit by the effects of the deep crisis, with sites operating below 20% of their nominal capacities. These and other data show a severely damaged landscape for this industrial sector that has to be recovered gradually in the coming years.
EQUIPMENT PROVIDERS 1
Modularization and portability, an interesting solution for the cement industry
Doing some of the most challenging projects during the last years, like the world largest grinding station for Lafarge Holcim Barroso (Brazil), or for Cement Australia, Port Kembla (Australia), where the whole grinding station was built in modules in North Spain and shipped to Australia in five vessels, today, we have the largest models of portable and modular grinding stations in the market. And the only ones that in a considerable number are running in more than a dozen countries all over the world.
Smallest time to market, small investment, small land size requierements, small and easy civil work, small human resources to run the plant, gives our Plug&Grind® the title of Modular and Portable Solution for the Cement Industry.
From 12 tph to more than 40 tph, Plug&Grind® system with ball mill or vertical mill is the solution for small, portable and modular grinding station.
EQUIPMENT PROVIDERS 2
Loesche’s new Compact Cement Grinding plant (CCG)
The CCG is a small-scale grinding plant designed to produce different types of cement. The CCG plant provides the answer for both start-up operations and where there is demand for locally produced cement in small but growing markets around the world, or you can use a CCG plant to increase the grinding capacity at your existing production facilities.
The CCG plant’s modular concept means short delivery times, with minimized installation and commissioning. The bottom line? You’re in the market quickly with profitable production, a new market emerges? No problem either, as the complete CCG plant can be relocated to start production wherever the market is!
EQUIPMENT PROVIDERS 3
Reliable energy supplier
Cement manufacturing is particularly energy-intensive. In order to reduce the use of expensive primary fuels like coal and oil, cement plant operators focus increasingly on alternative fuels and raw materials (AFR). The use is generally focused on the fuels. Neither the manufacturing process, the end product, nor the emissions may be affected. Therefore, high-caloric wastes that cannot be further recycled, e.g. from plastic and packaging residues, paper, composite material or textiles, have to be treated beforehand to be ready for co-processing.
EQUIPMENT PROVIDERS 4
Concrete Quality Control
MOVILOC®, the fleet management and location technological service designed and maintain by GMV, complies with EHE08 to get the Quality Distinctive. MOVILOC® service provides traceability information of the load as well as information of the parameters involved in the homogeneity and specifications of the concrete: The amount of water poured in the revolving drum, the force that the engine applies to the revolving drum and the speed and direction, indicating whether it is producing concrete mixing or discharge. Through a complete graph, the users can determine if the concrete has been transported to the appropriate quality.
Product category rules to obtain environmental product declarations for precast concrete products
Technical Report UNE 127757:2016 “Product category rules to obtain environmental product declarations for precast concrete products” has recently issued, representing a national milestone about the creation of a specific environmental assessment methodology for precast concrete products. Besides the acknowledge advantages of industrialized version of concrete construction in terms of durability, execution speed or greater control as result of more rigorous control along all the stages of an industrial process, just a reference framework was necessary to quantify the environmental impacts of these elements, being in a global context in which such concepts are being introduced within the market and society, who become more and more aware on emission reductions, the energy efficiency, responsible use of resources, or concepts such as life cycle or circular economy.
New technologies in superplasticizer market for concrete admixtures
The construction industry, with the various challenging projects, is demanding more and more workability time of the fresh concrete, in order to improve the concrete production and make it be as flexible as possible. On the other hand the initial setting time of the concrete shouldn’t be influenced in a negative way. The solution for this demand is a new polymer fulfilling challenging requirements, newest technology: Sika ViscoFlow.
Study on Corporate Social Responsibility (CSR) in the Spanish cement sector
This study, pioneer in the Spanish cement industry, aims to highlight the contribution made by the cement sector to the welfare of the communities where it operates. The study has been carried out by the CEMA Foundation, which is itself an initiative of Corporate Social Responsibility (CSR), since its three dimensions: economic, social and environmental, are integrated both in the Foundation statutes, and in their activities.
This report, involving all the cement groups of our country, has been carried out at a time when the sector is going through the worst economic crisis in its history. The study shows that the industry has and maintains a historic and ongoing commitment with issues arising from CSR. The study comes with a vocation to become an observatory on the evolution of CSR in the Spanish cement industry.
“Kiss Bridge”. White concrete pedestrian bridge in Pilar de la Horadada (Alicante)
This paper describes the “Kiss Bridge”. A unique folding structure that represents a kiss, a softy touch of structures. It consists in two beams that have been structurally designed as the Japanese art of paper folding called “origami”. The material used for the floating beams is white reinforced concrete presented in bended plates. The two parts of the bridge have different geometry and structural behavior. The length of the main path of both structures is over 60 m. The pedestrian bridge crosses an artificial rainwater channel with a veer of 45 º with respect to the referred channel.
The union between the cantilever structure and the Y-shaped one is located over the middle of the channel. Each stretch has different transversal sections. The pedestrian bridge is made with prestressed self-compacting reinforced concrete of 60 MPa. The foundation was performed using conventional concrete of 35 MPa, it is superficial and any part of the bridge has an independent foundation. The cantilever structure with its foundations could be considered as a semi-integral bridge. Special care has been taken in consideration of dynamic loads generated by pedestrians when they are walking on the structure, because the cantilevered part could present dynamic interaction. The bridge was recognized, in the 2014 edition of the fib Awards for Outstanding Concrete Structures, as making a valuable contribution to the image and promotion of concrete structures.