PDF Sustainable use of mine waste and tailings with

Utilization of mine waste rocks and tailings in concrete as aggregates will help in sustainable and greener development The literature shows the potential use of iron ore tailings as

Cement mixtures containing copper tailings as an additive

ABSTRACT The effects of copper tailings as an additive on some durability properties of cement mixtures were investigated In each mixture copper tailings addition levels by mass were 0 5 and 10 Compared to the control samples copper tailings blended

Potential for reuse of tungsten mining waste rock in

A prototype study to reuse rock waste tailings of a local tungsten mine is presented Polymer based composites of non contaminated rock waste tailings were developed Potential for mineral wastes reuse as technical artistically products is discussed

Application of Discarded Rubber Car Tyres as Synthetic Coarse Aggregates in Light Weight Pavement Concretes

American Journal of Materials Science 2015 5 4 83 DOI 10 5923 j materials 20150504 01 Application of Discarded Rubber Car Tyres as Synthetic Coarse Aggregates in Light Weight Pavement Concretes David Dodoo Arhin 1 Sarah Akua Mensah 1 Abu Yaya

Current Issue

Membership In today s market it is imperative to be knowledgeable and have an edge over the competition ACI members have it they are engaged informed and stay up to date by taking advantage of benefits that ACI membership provides them Read more about

Recovering Iron from Iron Ore Tailings and Preparing Concrete

minerals Technical Note Recovering Iron from Iron Ore Tailings and Preparing Concrete Composite Admixtures Chang Tang 1 2 3 Keqing Li 1 2 Wen Ni 1 2 and Duncheng Fan 1 2 1 Key Laboratory of the Ministry of Education of China for High E cient Mining and Safety of Metal Mines

Study of reactive powder concrete using quartzite tailings

Quartzite mining in Minas Gerais Brazil represents an important part of the state s economy however the difficulties of miners in complying with environmental requirements have led to the closure of activity in many places reflecting a social problem increasing the class unemployment and in an environmental problem caused by large environmental liabilities by the tailings waste

Assessment of Environmental Impact of the Mineral Mining

The emissions from waste and tailings piles are similar in mineralized identity to those from primary storage piles but because the particles are finer they travel further Fugitive emissions associated with reclamation operations result from wind erosion of

A review of binders used in cemented paste tailings for

Review A review of binders used in cemented paste tailings for underground and surface disposal practices Amjad Tariq Ernest K Yanful1 Department of Civil and Environmental Engineering The University of Western Ontario London Ontario Canada N6A 5B9

PDF Use of copper mine tailing in concrete strength

Results not only revealed that these solid waste tailings could be used successfully as a partial replacement material for the cement in concretes but also statistical analysis showed that the

UTILIZATION OF SULFIDIC MINE TAILINGS IN GEOPOLYMER

mine tailings Novel technologies to store and utilize mine tailings and marketable value added products Larger utilization of mine tailings as a construction material and decreasing mining tailings as a waste reuse of materials and sustainable growth

Geopolymer

What is a geopolymer In the 1950s Viktor Glukovsky of Kiev USSR developed concrete materials originally known under the names quot soil silicate concretes quot and quot soil cements quot but since the introduction of the geopolymer concept by Joseph Davidovits the terminology and definitions of geopolymer have become more diverse and often conflicting

Cement Mixtures Containing Copper Tailings as an Additive

Cement Mixtures Containing Copper Tailings as an Additive Durability Properties 2 4 Autoclave expansion The impact of copper tailings on CaO or MgO or both induced delayed expansion of pastes was investigated in accordance with the ASTM C 15118 specification specification

Utilisation of iron ore tailings as aggregates in concrete

Utilisation of iron ore tailings as aggregates in concrete Francis Atta Kuranchie 1 Sanjay Kumar Shukla Daryoush Habibi and Alireza Mohyeddin1 Abstract Sustainable handling of iron ore tailings is of prime concern to all stakehold ers who are into iron ore

Reuse of iron ore tailings in the production of geopolymer

Geopolymer mortars and concretes may be more environmentally friendly if not only Portland cement but also natural aggregates sand gravel are replaced with waste materials This article presents results of geopolymers made with tailings from the iron mining

Use of Base Metal Tailings from Mining Industry in Concrete A

use of this mining waste as building construction material Such studies have shown that mine tailings have great potential to be used in concrete thus making construction a green activity This paper reviews the use of base metal tailings in concrete Keywords

Rheological and Mechanical Properties of Light Weight Self

volume of solid waste generated including tailings from mineral processing activities is one of the main pollution concerns in the mining industry Therefore ways of utilizing mine waste need to be found Yellishetty et al 2008 The use of mine waste as a

Properties of Cement Based Materials Containing Copper Tailings

iv these test results and cost analyses the use of pre wetted tailings at 5 addition level by mass of cement seemed to be the best reuse approach Keywords Copper tailings environment pastes mortars concretes mechanical strength sulfate and acid

Evaluation of iron ore tailings as replacement for fine

1 Introduction In recent years steel production has increased significantly to meet the construction industry demands This has resulted in the generation of huge amount of iron ore tailings IOT which are disposed of as waste in landfills quarries rivers oceans

Assessment of Mechanical and Durability Properties of High

concretes and its effect on different mechanical properties of concretes with various replacement levels of natural aggregate 21–24 This paper aims to investigate the feasibility of using IOTs and waste rock CWR as fine and coarse aggregates in the

PDF Reuse of iron ore tailings in the production of

Geopolymer mortars and concretes may be more environmentally friendly if not only Portland cement but also natural aggregates sand gravel are replaced with waste materials This article

Mechanical and Electroconductivity Properties of Graphite

This paper investigated the mechanical and electroconductivity properties of graphite tailings concrete in which the graphite tailings are replaced as sand The results showed that the concentration of graphite tailings has an important influence on the mechanical electroconductivity and material properties of concrete Finally a new model for calculating the relationship between

Concretes for Nuclear and Uranium Waste Containment

Concretes for Nuclear Waste and Uranium Waste Containment plutonium for the production of nuclear weapons There will be approximately 44 disposal campaigns of about one million gallons of waste each solidified with 900 000 pounds of a dry blend 1078 kg

Durability related properties of mortar and concrete

This paper reports the results of research investigating the impact of copper tailings on some durability properties of cement pastes mortars and concretes Four mixtures incorporating copper tailings at 0 to 15 cement substitution levels by mass were used

Geopolymer Bricks Using Iron Ore Tailings Slag Sand

World is pound with million tonnes of industrial wastes such as ground granulated blast furnace slag GGBS flyash and mine tailings as a various industrial waste The best way to make use of these wastes is to incorporate these materials as structural elements which in turn minimizes the carbon foot print In this contest this study focuses on using iron ore tailings and slag sand as a

Durability Strength and Stiffness of Compacted Gold Tailings

copper tailings as a cement replacement material in cement pastes mortars and concretes These studies showed that the incorporation of tailings at 0 to 15 cement substitution levels by mass maintained both compressive and tensile strengths at similar

Copper tailings as a potential additive in concrete consistency

properties of concretes containing copper tailings as an additive To compare the effects of copper tailings on strength and strength related properties across two concrete classes two series of concretes with 0 57 and 0 50 water to binder ratios are used

Applied Sciences Special Issue Recycling Waste in

Waste products have recently been used as one of the techniques in soil stabilization The material is not just environmentally friendly but also cheap In this study two different types of soil stabilizer lime and alkaline activator AA with the inclusion of treated coir

Mineral processing and characterization of coal waste to

The mineral processing steps to produce the coal waste fine aggregate from coal mining tailings are presented in Figure 1 Sulfate is considered to be harmful for concretes and it is recommended that the values of sulfates and sulfides in

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