A similar study on reuse of copper tailings was performed to obtain additive to cement mortars from copper tailings in abandoned processing facilities at Leftke, Cyprus (Onuaguluchi and Eren, 2012 ...
ادامه مطلبA large number of studies have been performed on the application of copper slag in concrete: as a substitute for cement, i.e. in the production of cement clinker [11,12], and as partial or ...
ادامه مطلبIn recent years, the use of natural fibers in concrete has gained considerable attention due to their potential as a sustainable alternative to conventional steel reinforcements. This paper investigates the strength performance of natural fiber-reinforced recycled aggregate concrete using copper slag as a replacement for fine aggregate. …
ادامه مطلبIn this work, a 52.5 R Portland cement (PC) is used; this cement was chosen as it is free of any additives; that is to say, composed of clinker between 95%– …
ادامه مطلبA standard w/b ratio of 0.485 according to the ASTM C 109 ([22] guidelines was used for preparing mixtures incorporating 0%, 5% and 10% copper tailings by mass of cement as a mortar additive.These mixtures were identified as C0 for control, C5 for 5%, C5–PW for 5% addition of pre-wetted copper tailings and C10 for 10% addition level.
ادامه مطلبA constant percentage of marble dust powder was added to replace the binder material (cement). Additionally, copper slag replaced 10%, 20%, and 30% of the fine aggregate, and recycled aggregate replaced 10%, 20%, and 30% of the coarse aggregate. According to the M-30 standard, water/cement ratios in concrete mixtures …
ادامه مطلبCopper slag and cement's impacts on stabilized soils' compaction, strength, permeability, and durability are examined. The paper also discusses laboratory and field …
ادامه مطلبThe present work focuses on assessing the viability of applying blasted copper slag, produced during abrasive blasting, as fine aggregate for Portland cement concrete manufacturing, resulting in an alternative and safe disposal method. Leaching assays showed no toxicity for this material. Concrete mixtures were produced, with high …
ادامه مطلب4.2 Cement additive. Copper slag can also be used as a pozzolanic material in mixed cement by directly replacing a portion of ordinary Portland cement. The effects of …
ادامه مطلبThe CMS of the mortar improves gradually when the curing period is increased with the addition of mineral additives. When slag is used in place of cement, …
ادامه مطلبThe use of copper slag in cement and concrete provides potential environmental as well as economic benefits for all related industries, particularly in areas where a considerable amount of copper ...
ادامه مطلبFor this experimental investigation, M40 grade concrete is considered and designed as per Indian standard IS:10262-2019 [29].Totally, eight mixes were prepared of which, six mixes are comprised of waste copper slag in varied percentages like 0%, 20%, 40%, 60%, 80%, and for mixes CS0, CS20, CS40, CS60, CS80, and CS100 …
ادامه مطلبMoura et al. 11 employed copper slag as an additive in concrete, and they observed increased mechanical strength, reduced porosity and carbonation for concrete samples. Al-Jabri et al. 12 also submitted that the substitution of sand with copper slag improved the strength and durability properties of high strength concrete.
ادامه مطلبThe type and amount of additives play a significant role in making more durable mixes. Cement is considered an effective additive that makes the mix moisture resistant, and rice husk ash has ...
ادامه مطلبConcrete permeability tests were conducted (start permeating pressure 1.73 MPa, compared to 1.0MPa for OPC) as well as hydration heat (28.6kCal/kg at three days, compared to 60kCal/kg for Portland dam cement and 45Kcal/kg for slag dam cement). Steel-slag cement also exhibits high resistance to abrasion and an application in road …
ادامه مطلبCopper slag and cement's impacts on stabilized soils' compaction, strength, permeability, and durability are examined. The paper also discusses laboratory and field investigations on copper slag and cement soil stabilizers. Copper slag and cement improve soil engineering qualities, including load-bearing capacity, settling, and erosion resistance.
ادامه مطلبThe standard cement composite sample for M 60 grade concrete has a compressive strength of 66.5 MPa (Fig. 5c). When fine aggregate is substituted for …
ادامه مطلبA recent review [47] shows that copper slag contains high levels of iron oxide and has low grindability compared to conventional raw materials for cement production. …
ادامه مطلبThere is almost 6.67% increase in compressive strength of concrete compared to control mixture (i.e. sand) at 40% copper slag replacement at 28 days of cuirng.Mixture containing 50% copper slag gave higher split tensile strength of concrete, almost 19.3% increase compared to control mixture at 28 days of curing.For cement mortars, all ...
ادامه مطلبSlag has angular morphology as shown in Fig. 2 (c). Slag is a commonly used SCM having particle sizes less than 45 μm and surface area ranging from 400 to 600 m 2 /kg (El-Chabib, 2020). Similar to blast furnace slag, copper slag (CS) is a by-product obtained from smelting of copper and its refining industry (Wang, 2016).
ادامه مطلبThe industrial by-products from the refining of metals, such as copper slag (CS) from matte smelting and refining of copper, could be a feasible solution for producing high-strength concrete since incorporating CS as an aggregate enhances the durability of concrete mixtures without compromising the strength and other mechanical properties .
ادامه مطلبThe use of copper slag as a pozzolanic material for a partial substitute for ordinary Portland cement and its effects on the hydration reactions and properties of mortar and concrete have been reported in several publications (Al-Jabri et al., 2006, Taha et al., 2007, Malhotra, 1993, Tixier et al., 1997, Ariño and Mobasher, 1999, Douglas and …
ادامه مطلبThe present study evaluates the effect of utilising granulated blast furnace slag as a partial substitution of the fine fraction of natural aggregates on various concrete parameters using the general factorial approach. Two levels of the water/cement ratio (0.45 and 0.5) and four different percentages of granulated blast furnace slag (0, 20%, 40% …
ادامه مطلبThe properties of copper slag make it an interesting material for different applications. A concern of the utilization of copper slag is that hazardous metal …
ادامه مطلبThe use of copper slag as a pozzolanic material for a partial substitute for ordinary Portland cement and its effects on the hydration reactions and properties of …
ادامه مطلبZain et al. (2004) applied blasted copper slag as an additive, replacing Portland cement in mortar, in order to study a safe route for disposal of this sub-product. The replacement of cement by this residue increased the setting time and slightly reduced compressive strength in mortars, finding that the optimal amount of replacement was …
ادامه مطلبMussel shell ash (MSA) and ground granulated blast furnace slag (GGBS) has similar chemical and physical properties as ordinary Portland cement (OPC) which makes it applicable to replace cement in concrete. Currently, the research on combination of GGBS and MSA as...
ادامه مطلبGround-granulated blast-furnace slag (GGBFS) is produced by quenching molten iron slag (a by-product of iron and steel-making) from a blast furnace in water, to produce a granular product that is then dried and ground into a fine powder. ... When added to concrete, GGBFS enhances a range of performance characteristics such as the reduction of ...
ادامه مطلبThe results indicate that copper slag concrete has excellent resistance to weight and strength loss at an elevated temperature of 2000 C, 4000 C compared to normal concrete however at 6000 C ...
ادامه مطلبThey make using of high quality copper slag blasting media to enhance the quality of copper slag blasting. We have maintained the standard of highest quality level in the best possible manner. ... Additive to make high density concrete for nuclear shielding (40/120) Paints and Coatings; Blast Cleaning; Asphault anti-skid additive (30/60) Slag ...
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