Basalt Powder Waste Application as Affordable Concrete Admixture (original) (raw)
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Properties of Diyarbakir Basalt for Concrete Mix
Concrete is the most common structural material used in construction of buildings etc. in the world. the chemical and physical properties of aggregates have a great importance in concrete design with respect to strength and durability of concrete structures. In this study, as a concrete aggregate, basalt which is common around Diyarbakır province and mineral additives which are waste materials together with cement are used as binding material. This paper has come into prominence as it aims to determine proper admixture levels and usability of Diyarbakır basalt in concrete admixture following the mechanical, physical and chemical properties.
Journal of Cleaner Production, 2014
This study aims at environmentally assessing the most significant input and output flows related to the production of concrete using basalt aggregates. For this purpose, Life Cycle Assessment (LCA) was applied according to the ISO 14040:2006 and 14044:2006. All data used were collected on site based on observations during site visits, review of documents and interviews with technical personnel and management. They were processed by using SimaPro 7.3.3, accessing the Ecoinvent v.2.2 database and using the Impact 2002þ method. The LCIA results show that the most impacting phase is the production of the basalt aggregates, with "Human Health" being the most affected damage category because of the emissions to air, of 2.7 kg of particulates (grain size <2.5 mm). In addition to this, the concrete production causes, mainly, the emission, in air, of 465 kg of Carbon Dioxide and the consumption of 37.37 kg of crude oil, per cubic metre of concrete, affecting, the damage categories "Climate Change" and "Resources" also. Regarding "Ecosystem Quality", the occurred damage is due to the emission to air, of 29.6 g of Aluminium and of 251 mg of Zinc into the soil per cubic metre of concrete. Based on the obtained results, the increase of the amount of water used for particulates removal during the basalt extraction phase was assessed. Furthermore, the alternative use of limestone aggregates was assessed from both technical and environmental perspectives. The analysis developed highlighted a total damage decrease of 67%.
Effect of Mineral Admixtures in Concrete
2018
The main focus of the present study is to analyse the effect of partial replacement of cement with minerals on the properties of concrete. In view of global warming, Cement industry is a major contributor in the emission of CO2 and the use of high level of energy resources in the production of cement leads to depletion of natural resources. In this present study, an attempt has been made to utilise the use of industrial and agricultural byproduct waste as a mineral admixture in concrete for partial replacement of cement that shall reduce waste landfill sites and pollution as well as minimize the consumption of natural resources. Among these industrial by-product are Fly Ash (FA), Silica Fume (SF), Rice Husk Ash (RHA) and Granulated blast furnace slag (BFS) for making the concrete there by reducing the CO2 emission. These mineral admixtures, commonly used in structural concrete, were studied here to assess their effect on the fresh and hardened properties of concrete. The materials w...
Materials
In this paper, the recycled fine aggregates and powders produced from crushing old basaltic concrete and natural basalt were used to produce new concrete. The sand was partially replaced by two types of recycled wastes at five percentages: 0%, 20%, 40%, 60%, and 80%. The cement was partially replaced by recycled powders and silica fume (SF) at four percentages: 0, 5%, 10%, and 20%. The concrete strengths and water absorption were obtained at several curing ages. The obtained results emphasized the positive effects of increasing the curing time on enhancing the concrete properties, regardless of the types or the waste sources. Moreover, the recycled powders retarded the hydration reaction. In addition, the recycled fine aggregates and powders could achieve about 99.5% and 99.3% of the ordinary concrete strength and enhance the tensile strength. Furthermore, the mix containing 40% of recycled fine concrete aggregate diffused the highest contents of both calcium and silicate, which led...
Construction and Building Materials, 2007
The natural materials provide a way for an economic production of concrete in hot weather conditions without using high cost chemical retarders. Effects of a natural additive on the properties of concrete vary with the additive type and volume. In this study, the effect of two natural materials as additives on the properties of concrete was investigated. Nine concrete mixtures were produced in three series with control mixes having 300 kg cement content. These control mixes were modified to have 1%, 2%, and 4% pumice or diatomite in place of cement. As the diatomite or pumice ratio increases, the initial setting and setting duration of concrete increase. The effect of the additive ratio on the compressive strength and the modulus of elasticity were varied. The additive ratio increase in concrete resulted a sudden decrease at first and an increase than, of the compressive strength and of the modulus of elasticity. The variation of the compressive strength and of the modulus of elasticity along the time is similar to the conventional concrete and confirmed some of the existing empiric formulas.
Effect of basalt powder addition on properties of mortar
MATEC Web of Conferences
The study evaluates the use of waste basalt powder as a replacement of cement to enhance hydration of cement and mortar properties. The basalt powder is a waste resulting from preparation of aggregate used in asphalt mixture production. Previous studies have shown that analysed waste used as a fine aggregate replacement has a beneficial effect on some properties of mortar and concrete, i.e. compressive strength, flexural strength and freeze resistance. The present study shows the results of the research concerning the modification of cement paste and mortar with basalt powder. The modification consists in adding the powder waste as a partial replacement of cement. The percentages of basalt powder in this research are 0-40% and 0-20% by mass of cement in the pastes and mortars respectively. The experiments were carried out to determine the influence of basalt powder on cement hydration, as well as compressive and flexural strength. Results indicate that addition of basalt powder as a...
Assesment of Alkali Resistance of Basalt Used as Concrete Aggregates
Selected Scientific Papers - Journal of Civil Engineering, 2015
The objective of this paper is to report a part of an ongoing research on the influence of using crushed basalt as aggregates on one of durability-related properties of concrete (i.e. alkali-silica reaction which is the most common form of Alkali-Aggregate Reaction). Alkali resistance has been assessed through several methods specified in the American Standards. Results of petrographic examination, chemical test (ASTM C289) and accelerated mortar bar test (ASTM C1260) have particularly been reported. In addition, the weight change and compressive strength of 28 days cured concrete containing basaltic aggregates were also reported after 90 days of exposure to 10% NaOH solution. Dolomite aggregate were used in the latter test for comparison. The experimental results revealed that basaltic rocks quarried from As-Swaida’a region were suitable for production of aggregates for concrete. According to the test results, the studied basalt aggregates can be classified as innocuous with regard...
INCORPORATION OF BASALT FILLER WASTE IN THE MANUFACTURE OF CONCRETE BLOCKS FOR INTERLOCKED PAVING (Atena Editora), 2022
Filler waste originates from the crushing or grinding of basalt rock of igneous or magmatic origin. This artificial process of making crushed stone generates an enormous amount of fine powder, mostly and to a lesser extent small flakes of basalt, thus forming the residue of basalt filler. The main objective of this work was to study the potential and feasibility of incorporating a certain waste in the area of civil construction. Basalt filler residue was incorporated, with 50% and 100% being added in place of sand. To verify the quality of the produced parts, water absorption, dimensional and compressive strength tests were carried out and they were carried out in the MECFOR test laboratory. The interlocking block obtained from the addition of 50% of basalt filler and 100% in replacement of fine aggregate presented mechanical resistance of compression lower than that required by the standard.
Materials, 2022
In this study, basalt, which is common around Diyarbakır province (Turkey), is used as concrete aggregate, waste materials as mineral additives and Portland cement as binding material to prepare concrete mixes. This paper aims to determine the proper admixture levels and usability of Diyarbakır basalt in concrete mixtures based on mechanical, physical and chemical tests. Thus, in order to determine the strength and durability performance of concrete mixtures with Diyarbakır basalt as aggregate, 72 sample cubes of 150 mm were prepared in three groups: mineral-free admixture (MFA), 10% of cement amount substituted for silica fume (SFS) and 20% for fly ash (FAS) as waste material. The samples were exposed to water curing and 100g/L sulphate solution to determine the loss in weight of the concrete cubes and compressive strength was examined at the end of 7, 28 and 360 days of the specimens. Analysis of the microstructure and cracks that influence durability, were also performed to deter...