Fresh and mechanical properties of SCC with fly ash and copper slag as mineral admixtures

2021 ◽  
Author(s):  
Arunchaitanya Sambangi ◽  
Arunakanthi E.
Keyword(s):  
Mechanical Properties ◽  
Fly Ash ◽  
Copper Slag ◽  
Mineral Admixtures

scholarly journals Effect of Mineral Admixtures on Mechanical Properties of Concrete with Partially Replacement of Flyash and Ggbs

2018 ◽  
Vol 7 (3.35) ◽  
pp. 43
Author(s):  
Pothunuri Shalini kumari ◽  
K. Srinivas Rao ◽  
Tirumala Deepika
Keyword(s):  
Mechanical Properties ◽  
Fly Ash ◽  
Adverse Effects ◽  
Manufacturing Process ◽  
Binder Content ◽  
Mineral Admixtures ◽  
Huge Amount ◽  
Content Ratio ◽  
Tremendous Amount

Being humans the usage of concrete is more and more important now a days. Generally many people have dreams to construct their own houses and also government is take up many big projects like construction of dams, bridges etc. This shows us the necessity of production of huge amount of concrete. But for the production of concrete tremendous amount of cement is required, which in turn leads to the release of large amounts of CO2 into the atmosphere during its manufacturing process. It causes adverse effects to the environment. To decrease amount of CO2 and its adverse effects, we partially replaced the cement with mineral admixtures like GGBS and Fly ash. The present study dealt with the mechanical properties of concrete by using various percentages of mineral admixtures with water to binder content ratio 0.4 and M40 grade of concrete.  

Effect of steel slag powder, fly ash, and silica fume on the mechanical properties and durability of cement mortar

2019 ◽  
Vol 9 (9) ◽  
pp. 1049-1054
Author(s):  
Yunxia Lun ◽  
Fangfang Zheng
Keyword(s):  
Mechanical Properties ◽  
Compressive Strength ◽  
Fly Ash ◽  
Silica Fume ◽  
Cement Mortar ◽  
Steel Slag ◽  
Mineral Admixtures ◽  
Partial Replacement ◽  
Slag Powder ◽  
Steel Slag Powder

This study is aimed at exploring the effect of steel slag powder (SSP), fly ash (FA), and silica fume (SF) on the mechanical properties and durability of cement mortar. SSP, SF, and FA were used as partial replacement of the Ordinary Portland cement (OPC). It was showed that the compressive and bending strength of steel slag powder were slightly lower than that of OPC. An increase in the SSP content caused a decrease in strength. However, the growth rate of compressive strength of SSP2 (20% replacement by the weight of OPC) at the curing ages of 90 days was about 8% higher than that of OPC, and the durability of SSP2 was better than that of OPC. The combination of mineral admixtures improved the later strength, water impermeability, and sulfate resistance compared with OPC and SSP2. The compressive strength of SSPFA (SSP and SF) at 90 days reached 70.3 MPa. The results of X-ray diffraction patterns and scanning electron microscopy indicated that SSP played a synergistic role with FA or SF to improve the performance of cement mortar.

Workability and Mechanical Properties of Concret with Different Admixtures

2013 ◽  
Vol 325-326 ◽  
pp. 67-70
Author(s):  
Yun Feng Li ◽  
Mi Xue Han ◽  
Li Xu
Keyword(s):  
Mechanical Properties ◽  
Blast Furnace ◽  
Fly Ash ◽  
Blast Furnace Slag ◽  
Steel Slag ◽  
Mineral Admixtures ◽  
Slag Powder ◽  
Steel Slag Powder ◽  
Furnace Slag

The mineral admixtures mixed into concrete have important effects on concrete performance. The workability and mechanical properties of the concrete are studied with different dosages of admixtures, such as steel slag powder, blast furnace slag powder and fly ash. The results show that fly ash has more advantages in improving the performance of the concrete. When steel slag powder, blast furnace slag powder and fly ash, respectively, replace the amount of cement to 30%, 30%, 20%, the mechanical properties of the concrete are improved significantly.

scholarly journals Mechanical Characteristics of Lightweight Concrete Enhanced by Fly-Ash and Steel Fiber

2019 ◽  
Vol 26 (4) ◽  
pp. 16-25
Author(s):  
Arkan Ahmed ◽  
Bayer Al-Sulayvany ◽  
Muyasser Jomma’h
Keyword(s):  
Mechanical Properties ◽  
Compressive Strength ◽  
Fly Ash ◽  
Steel Fiber ◽  
Lightweight Concrete ◽  
Mineral Admixtures ◽  
Light Weight ◽  
Is Success ◽  
Aggregate Concrete ◽  
Light Weight Aggregate

This research deals with production of light weight aggregate concrete by using clayey stone aggregate, normal material (cement , sand) and some of mineral admixtures (fly ash and steel fiber ). Many trial mix were doing some of these by weighing ratio and others by volumetric ratio . We get light weight aggregate concrete (LWAC) with 24.92 N/ mm2 compressive strength and we improved mechanical properties by adding same percentage of fly ash and steel fiber (0.5 ,1 ,1.5) % of each other as a percentage weighing ratio of cement content . compressive strength increased with (7.8 , 5.2 , 2.9) % , splitting tensile strength increased with (20 ,16.71, 12)% and flexural strength increased with (24.5 , 17.9 , 8) % when adding (0.5 ,1 ,1.5) % of each steel fiber and fly ash respectively. The practical results of the current study indicates that the using clayey stone to produce (LWAC) is success and we can improved mechanical properties of this (LWAC) was produced in this research by adding fly ash and steel fiber with previously percentage.

Permeability of Concrete Containing Air-Entraining and Mineral Admixtures

2011 ◽  
Vol 250-253 ◽  
pp. 425-429
Author(s):  
Wei Rong Huang ◽  
De Bin Yang ◽  
Jian Ting Zhou ◽  
Li Li ◽  
Wei Na Zhang
Keyword(s):  
Mechanical Properties ◽  
Fly Ash ◽  
Chloride Ion ◽  
Mineral Admixtures ◽  
Cement Ratio ◽  
Air Content ◽  
Chloride Ion Penetration ◽  
Saline Area ◽  
Electric Flux ◽  
Better Than

In this paper, the performance of concrete is studied through different water-cement ratio, different air-content, different mineral admixtures, different admixture contents, examined the mechanical properties of concrete, electric flux and chloride ion penetration depth of different mix concrete. The results show that, decreasing w/c ratio, proper air content, adding mineral admixtures can improve the resistance of chloride-permeation. Within some contents, the chloride-permeation resistance using silicides is better than that of fly-ash or slag. On this basis, the proper scheme of mix ratio used in saline area is recommended: the air-content is 3%～5%, the content of fly-ash or slag is 20%～30%, the content of silicides is 6%～8%, and double mixed with silicides.

scholarly journals An Experimental Study on Fibre Reinforced Geopolymer Concrete Composites- Glass Fibre, Copper Slag

2018 ◽  
Vol 7 (3.34) ◽  
pp. 433
Author(s):  
J Asanammal Saral ◽  
S Gayathri ◽  
M Tamilselvi ◽  
B Raghul Raj
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Fly Ash ◽  
Volume Fraction ◽  
Glass Fibers ◽  
Thermal Power ◽  
Copper Slag ◽  
Fine Aggregate ◽  
Geopolymer Concrete ◽  
Split Tensile Strength

The major problem of the world is facing today is environmental pollution. It is well known that for the production of 1-ton of cement consumes more energy and exhibit 0.8-ton of CO2 .On the other hand Fly ash is a residue from the combustion of pulverized coal from the flue gases of thermal power plant. Recently, the fly ash is not effectively used and a large part of it is disposed in landfill. Due to this problem the various researchers have sort for a new binder to minimize the consumption of OPC. This study evaluates the strength of geopolymer concrete having fly ash as the major binding material and the sand a fine aggregate was replaced with copper slag of 40%  and glass fiber to enhance the mechanical properties have been presented. This paper analyses on the mechanical properties of eopolymer concrete composites such as compressive strength, split tensile strength and water absorption in heat curing at 60˚C for 24 hrs in hot air oven. Glass fibers were added in the mix in the volume fraction of 0.5%, 1.0%, 1.5% and 2.0% volume of the concrete. The influence of fiber content in terms of volume fraction on the compressive, split tensile strength of geopolymer concrete is presented. The result shows the elevated performance of the properties exhibited by the geopolymeric concrete with and without fibres.

scholarly journals Mechanical properties, pozzolanic activity and volume stability of copper slag-filled cementitious materials

2019 ◽  
Vol 26 (2) ◽  
pp. 218-224
Author(s):  
Junwei SONG ◽  
Shenglei FENG ◽  
Rongrong XIONG ◽  
Yong OUYANG ◽  
Qingli ZENG ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Phase Composition ◽  
Fly Ash ◽  
Copper Slag ◽  
Cementitious Materials ◽  
Pozzolanic Activity ◽  
Potential Danger ◽  
Hydration Products ◽  
Volume Stability ◽  
Local Residents

Copper slag is a by-product waste during copper pyrometallurgy. The piling-stack of copper slag not only occupies a large quantity of plowland, but causes potential danger for local residents. In order to reduce the storage of copper slag, this study prepared concretes by replacing ordinary cement by copper slag. The mechanical properties, phase composition, micrographs, pozzolanic activity and volume stability of the compound cementitious materials were evaluated with fly ash as control. It was found that when the content of copper slag was 5%-10%, the best mechanical properties of concretes were obtained. The phase composition of hydration products of copper slag and fly ash based cementitious materials was almost identical. The micrographs and pozzolanic activity showed that copper slag had stronger reactivity than fly ash. Copper slag based pastes had good volume stability. Copper slag presented a potential application in mortars and concretes.

scholarly journals Mechanical properties of copper slag waste based CLSM mixtures

2019 ◽  
Author(s):  
Roman Jaskulski ◽  
Wojciech Kubissa
Keyword(s):  
Mechanical Properties ◽  
Compressive Strength ◽  
Fly Ash ◽  
Copper Slag ◽  
Strength Tests ◽  
Low Strength ◽  
Slag Waste

The article presents the results of investigations of the compressive strength of controlled low-strength materials (CLSM) prepared with the use of copper slag waste as a filler. Eighteen mixtures were made of which part with sole copper slag waste, part with sand which served as reference and mixtures in which half of the filler was sand and half the copper slag waste. Part of them was prepared with 60 kg/m3 of cement and another part with 40 kg/m3 of cement. As a supplementary binder conventional fly ash was used. The aim was to recognie the feasibility of this type of material using copper slag waste as filler. Compressive strength tests were performed on the specimens in form of 40×40×160 mm bars. The tests showed that after meeting certain conditions regarding the composition of the mixture, the copper slag waste can be used as a filler in CLSM. The compressive strength values after 180 days not exceeded 1.60 MPa which is a very good result for this kind of material.

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