The effect of Colloidal Nano-silica on workability, mechanical and durability properties of High Performance Concrete with Copper slag as partial fine aggregate

2016 ◽  
Vol 113 ◽  
pp. 794-804 ◽  
Author(s):  
S. Chithra ◽  
S.R.R. Senthil Kumar ◽  
K. Chinnaraju
Keyword(s):  
High Performance ◽  
High Performance Concrete ◽  
Copper Slag ◽  
Fine Aggregate ◽  
Nano Silica ◽  
Durability Properties

scholarly journals Optimization of Design Mix Proportion for Saturated Water Absorption of High Performance Concrete

2018 ◽  
Vol 7 (1) ◽  
pp. 24-27
Author(s):  
M. Akila . ◽  
S. Chithra .
Keyword(s):  
Water Absorption ◽  
High Performance ◽  
High Performance Concrete ◽  
Signal To Noise Ratio ◽  
Copper Slag ◽  
Fine Aggregate ◽  
Nano Silica ◽  
Saturated Water ◽  
Mix Proportion ◽  
Water Curing

This study involves the optimization of design mix proportion for saturated water absorption of high performance concrete (HPC) by Taguchi Method. In the present investigation, saturated water absorption test on 25 HPC mixes specimens made with colloidal nano silica and copper slag as replacement of cement and fine aggregate respectively has been conducted at the age of 28 days and 90 days of water curing. The concrete mixes has been replaced by 1%, 1.5%, 2%, 2.5%, 3% of nano silica and copper slag of 10%, 20%, 30%, 40%, 50%. From Signal-to-Noise ratio, the optimal parametric combination for saturated water absorption has been obtained. The Analysis of Variance has been done on experimental data values. The percentage contribution of the factors towards saturated water absorption is identified. The nano silica contributes towards less water absorption in 28 days curing, while the Copper slag found to the major contributing factor for the cause after the 90 days tenure of water curing.

Effect of Copper Slag as a Fine Aggregate on the Durability Characteristics of High-Performance Concrete (HPC) Containing Silica Fume

2020 ◽  
Vol 07 (02) ◽  
pp. 1-10
Author(s):  
Rizwan Ahmad Khan ◽  
Keyword(s):  
Silica Fume ◽  
High Performance ◽  
High Performance Concrete ◽  
Copper Slag ◽  
Chloride Penetration ◽  
Interfacial Transition Zone ◽  
Fine Aggregate ◽  
Fresh Properties ◽  
Fine Aggregates ◽  
Effect Of Copper

This paper investigates the fresh and durability properties of the high-performance concrete by replacing cement with 15% Silica fume and simultaneously replacing fine aggregates with 25%, 50%, 75% and 100% copper slag at w/b ratio of 0.23. Five mixes were analysed and compared with the standard concrete mix. Fresh properties show an increase in the slump with the increase in the quantity of copper slag to the mix. Sorptivity, chloride penetration, UPV and carbonation results were very encouraging at 50% copper slag replacement levels. Microstructure analysis of these mixes shows the emergence of C-S-H gel for nearly all mixes indicating densification of the interfacial transition zone of the concrete.

Studies on ultra high performance concrete incorporating copper slag as fine aggregate

2015 ◽  
Vol 77 ◽  
pp. 233-240 ◽  
Author(s):  
P.S. Ambily ◽  
C. Umarani ◽  
K. Ravisankar ◽  
Prabhat Ranjan Prem ◽  
B.H. Bharatkumar ◽  
...  
Keyword(s):  
High Performance ◽  
High Performance Concrete ◽  
Copper Slag ◽  
Fine Aggregate ◽  
Ultra High Performance Concrete

scholarly journals Improving of Concrete Tightness by Using Surface Blast-cleaning Waste as a Partial Replacement of Fine Aggregate

2019 ◽  
Author(s):  
Wojciech Kubissa ◽  
Roman Jaskulski
Keyword(s):  
High Performance ◽  
High Performance Concrete ◽  
Free Water ◽  
Copper Slag ◽  
Absorption Capacity ◽  
Partial Replacement ◽  
Fine Aggregate ◽  
Chloride Ingress ◽  
Concrete Mixtures ◽  
Slag Waste

In the article the possibility of using surface blast-cleaning waste (copper slag based) as a replacement of fine aggregate in high performance concrete manufacturing was presented. Concrete with w/c ratio 0.45 and 360 kg/m3 dosage of cements: CEM I 42.5R, CEM II/B-V 42.5N and CEM III/A 42.5N was tested. The consistency measured in table flow test was assumed as 420 ± 30 mm so superplasticizer was used. The replacement rate of the fine aggregate 0–2 mm with the copper slag (CS) waste was 66 %. Concrete mixtures with sand served as reference. The performed tests focused on: compressive and tensile strength (both after 28 days), sorptivity, free water absorption capacity, Torrent air permeability, and chloride ingress depth after salt fog treatment. A freeze resistance test was also carried out according to PN-B-06265. The obtained results showed that the strength and some other tested properties of concrete mixtures with copper slag waste were similar or better than those of the mixtures with sand. The results of the tests indicate that the concrete with copper slag waste is more tight than the concrete with sand and therefore is more durable.

Effect of Partial Substitution of Fine Aggregate with Copper Slag on Mechanical and Durability of High Performance Concrete-A Review

2020 ◽  
Vol 07 (01) ◽  
pp. 1-11
Author(s):  
Rizwan Ahmad Khan ◽  
Keyword(s):  
Construction Industry ◽  
High Performance ◽  
High Performance Concrete ◽  
Construction Materials ◽  
Copper Slag ◽  
Partial Substitution ◽  
Fine Aggregate ◽  
Natural Sand ◽  
Severe Problem ◽  
Fine Aggregates

The challenge before the construction industry is to meet the demand of the efficient and economically viable construction materials posed by the huge infrastructural needs. Many nations are observing an expeditious growth in the field of construction necessitating the utilization of natural reserves for the expansion of infrastructure. This expansion is giving a warning to available reserves of nature. The natural ingredients, fine aggregates and coarse aggregate constitute more than 70% volume of the concrete. The availability of these resources is decreasing at a very high pace. In fact due to the severe problem with the availability of natural sand, the construction industry is faced with the pressing need to consider available options to lessen the reliance on natural aggregates. Copper slag being a waste material, can be used as an option for fine aggregates. The substitution of fine aggregate from nature with waste materials from industries such as copper slag offers economic and technical dominance, which are of pronounced significance in the present scenario. This study is, based on the critical review of the development of High Performance Concrete (HPC) by replacing fine aggregate with copper slag by observing various other researches and reviews. The key intent of this paper is to closely look at the copper slag utility as an unconventional material to be used as a substitute of fine aggregate and its effect on mechanical and durability parameters of HPC.

scholarly journals Mechanical And Durability Properties of HSC Containing Silica Fume And 100% M-Sand

2021 ◽  
pp. 411-417
Author(s):  
C. Sukanya ◽  
Mr. R. Surya Prakash
Keyword(s):  
Silica Fume ◽  
High Strength Concrete ◽  
High Performance ◽  
High Performance Concrete ◽  
High Strength ◽  
Fine Aggregate ◽  
Strength Concrete ◽  
Durability Properties ◽  
Pozzolanic Material ◽  
Fine Property

This project is related on the use of Silica fume as a substitution of cement and 100% m- sand as fine aggregate. Concrete is the most widely utilized material in the construction industry and will hold good for years. The credit is attributed to the properties of concrete like excellent strength, durability and less maintenance costs. But in the recent years, the concrete industry is facing a big challenge mainly due to the cement which is a vital component. In order to improve the durability properties many types of special concretes such as High Strength Concrete, High Performance Concrete, Fibre Reinforced Concrete, Self-Compacting Concrete, etc. have been developed. High performance concrete has become an attractive option to Civil Engineers due to the special characteristics like early strength, ease of placement, permeability, mechanical and durability properties. The performance of High strength Concrete (HSC) is enhanced by the addition of admixtures which act as pozzolans as well as fillers, thereby improving the microstructure of the interfacial transition zone making it denser and impermeable. Silica Fume (SF) is a commonly used pozzolanic material owing to its high silicon dioxide content and fineness. This ultra fine property of SF used in concrete to improve its strength and durability.

scholarly journals Characteristic study on high performance hybrid fiber reinforced concrete using copper slag fine aggregate

2018 ◽  
Vol 7 (3.3) ◽  
pp. 31
Author(s):  
P R. Kannan Rajkumar ◽  
M Rahul ◽  
P T. Ravichandran
Keyword(s):  
High Performance ◽  
Mechanical Characteristics ◽  
High Performance Concrete ◽  
Copper Slag ◽  
Fiber Reinforced Concrete ◽  
Fine Aggregate ◽  
River Sand ◽  
Hybrid Form ◽  
River Bed ◽  
Improved Performance

This study focuses on the effect on the mechanical characteristics of high performance concrete upon the utilization of copper slag in order to replace the fine aggregate. Copper slag has chemical and mechanical characteristics that can make the material a probable and efficient replacement material to river sand in concrete. On the other hand extraction of the sand from river bed in excess quantity is hazardous to the environment. River sand was partially and fully replaced (100%) by Copper slag in various proportions in the concrete. The concrete is also added with fibres in order to improve its mechanical properties. The addition of micro steel, hooked steel and polyester fibres in hybrid form with 1.0-1.25% to the total volume of concrete is found to be beneficial to the concrete. From the test results the concrete with 50% of its fine aggregate replaced with copper slag shows the better results; improved performance in compressive, split tensile, flexural strength, toughness and ductility. The addition of micro steel and hooked steel in the concrete produced a concrete of lower water absorption percentage. 

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