Vale S A : Sand

11/30/2021

Vale Sand

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At Vale, there are great investments in R&D because we are here to improve life and transform the future together! By combining innovation and sustainability, Vale Sand brings benefits to neighboring communities, to the environment and promotes the generation of new businesses. Vale Sand comes from the processing of iron ore and stands out for its chemical uniformity, particle size and absence of organic matter. Vale Sand is considered a fine aggregate, with fine particle size and with its composition mainly constituted by quartz. Characteristics suitable for various applications We contribute to the reduction in the exploitation of non-renewable natural resources by transforming the mining co-product into sustainable sand. Infrastructure and logistical expertise are our differential Vale has access to an enormous multimodal logistics network that integrates its mines with railroads, various terminals and ports, ensuring a broad reach in different markets, efficiency and safety in the product transport. This logistical infrastructure covers states such as Minas Gerais, São Paulo, Espírito Santo, Rio de Janeiro, Goiás, Brasília - DF, Bahia, among others, with a vast fleet of railroad cars, locomotives and terminals. Material characteristics Vale Sand has color and characteristics similar to other aggregates. Organic matter Lighter (<300 ppm) Specific mass 2,6 - 2,8 g/cm³ Fineness Module 0,30 - 0,70 Alkali-Aggregate Reactivity Potentially innocuous Maximum Diameter 0,3 - 0,6 mm Powder material(Pass through the 200# sieve - 75μ) 20 - 35% Clay clumps Absent SiO2 80 - 92% AI2O3 <0,7% Fe 5 - 14% Particle size distribuition Performance Validation An environment of open innovation was created, with more than 25 universities, laboratories and companies, in which approximately R$ 50 million have already been invested to study and evaluate Vale Sand's technical performance in various applications. Among these partners are UNIFEI, CEFET-MG, USP, UFMG, UFU, IPT, CTSS. Products Concrete Mortar Pre-fabricated Precast Cement Paving Concrete Vale Sand can be used in all types of concrete, both conventional and pumped concrete. Its physical characteristics can bring several benefits, such as the gain in mechanical strength of concrete. Use in concretes of different classes and consistencies Conventional or pumped concrete Self-compacting concrete Tests on concrete specimens Mortar Vale Sand can be used in the production of different types of mortar. Its use brings potential gains in the characteristics of this material. Mortar for bricklaying Adhesive mortar Coating mortar Projected mortar Pre-fabricated Vale Sand can also be used in high-flow concretes. Its use can contribute to the reduction of exudation and concrete segregation. Prefabricated elements Concrete walls Sleepers Beams and pillars Precast Vale Sand can be used in dry concrete, in the manufacture of various elements. In the Block Factory alone, launched in 2020, more than 65 types of precast are produced, including products for masonry, paving, foundation, drainage. Production of pavers at the Block Factory - Pico Mine/MG Cement Vale Sand can be used in the cement industry as an alternative to improve the characteristics and quality of the final product. Its use can generate cost reductions and production processes. Cement used for civil construction in general Bagged and bulk cements Paving Vale Sand can be applied on road pavements (hard or flexible) and in all its layers. Vale Sand increases its support capacity, reduces expansion and acts as a reduction agent for the cement consumption, lime and petroleum asphalt cement (PAC). Road paving of the Criando Caminhos Project Use in reinforcement layers of rigid pavements subgrade - Application on Highway BR-101- Contorno Mestre Álvaro in Vitória/ES Application on flexible road pavements - Experimental Track at Cauê/Itabira Mine - Minas Gerais Application on rigid pavements and cement base/sub-base floors Potential for application of Vale Sand in each layer of a flexible road pavement ​ ​​​​​​​​

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