scholarly journals Performance of Sustainable Nano Concrete

2019 ◽  
Vol 9 (2) ◽  
pp. 3160-3163
Keyword(s):  
Concrete Beam ◽  
Reinforced Concrete Beam ◽  
Nano Materials ◽  
Nano Silica ◽  
Conventional Concrete ◽  
Sustainable Building ◽  
Sustainable Technologies ◽  
Granulated Blast Furnace Slag ◽  
Micro Silica ◽  
Furnace Slag

Sustainable Nano concrete is a concrete having less energy consumption during the production and releases less carbon dioxide as compared to conventional concrete. About one ton of CO2 is discharged in the manufacture of one ton of Portland cement, thus having a large influence on global warming. The concrete industry is adopting sustainable technologies to diminish this impact. This paper presents the investigation on a sustainable concrete having Ground Granulated Blast Furnace Slag (GGBS), which is a byproduct of the steel industry, blended with Nano materials. Mechanical characteristics of concrete mixes having varying GGBS content (60%, 70%, and 80%) by weight of cement were investigated and compared with conventional concrete. To enhance the workability, compression strength, durability and early strength of GGBS based concrete, Nano silica, micro silica and calcium carbonate (CaCO3) were added to the concrete mix. It was found that concrete having 60% GGBS as replacement for cement exhibit improved mechanical properties. Also investigations were carried out on reinforced concrete beam with 60 % GGBS. Results indicate that concrete with 60 % GGBS could be used as a sustainable building material

scholarly journals Effect of Ground Granulated Blast Furnace Slag, Silica Fume and Nano Silica on the Strength & Durability Properties of Concrete: A Contemporary Review

2021 ◽  
Vol 889 (1) ◽  
pp. 012007
Author(s):  
Absar Yousuf Wani ◽  
Mohit Bhandari
Keyword(s):  
Blast Furnace ◽  
Silica Fume ◽  
Blast Furnace Slag ◽  
Unconfined Compressive Strength ◽  
Nano Silica ◽  
Split Tensile Strength ◽  
Conventional Concrete ◽  
Durability Properties ◽  
Granulated Blast Furnace Slag ◽  
Furnace Slag

Abstract This paper provides a contemporary review of the usage of Ground Granulated Blast-furnace Slag (GGBS), Silica Fume, and Nano Silica in Materialistic form over the deterministic aspects of conventional concrete. The main purpose of this literature learning is to enumerate the effect of GGBS, Silica Fume, and Nano Silica on strength of concrete. The GGBS, Silica Fume and Nano-silica is a restored substitute as compared to orthodox additives like CaCl2 and SiO2 because of their effectiveness with a lesser amount of consumption. It was found that the GGBS, Silica Fume, and nano-silica have an optimistic effect on the unconfined compressive strength, flexural strength, split tensile strength of concrete.

Experimental Study on the Effect of Recycled Aggregate and GGBS on Flexural Behaviour of Reinforced Concrete Beam

2016 ◽  
Vol 857 ◽  
pp. 101-106
Author(s):  
P.R. Deepa ◽  
Joy Anup
Keyword(s):  
Experimental Study ◽  
Raw Materials ◽  
Reinforced Concrete Beam ◽  
Recycled Concrete ◽  
Recycled Aggregate ◽  
Recycled Aggregates ◽  
Partial Replacement ◽  
Concrete Aggregate ◽  
Granulated Blast Furnace Slag ◽  
Furnace Slag

Globally, the concrete industry consumes large quantities of natural resources, which are becoming insufficient to meet the increasing demands. Cement and aggregates are major constituents of concrete. Utilisation of waste materials in concrete instead of raw materials reduces environmental pollution. Ground-granulated blast-furnace slag (GGBS) is a by-product of steel industry. It has cementatious property. Recycled aggregates are obtained from demolishing waste. By using recycled concrete aggregate and GGBS in concrete we can reduce environmental problem to some extent. This experimental study evaluate the effective utilisation of GGBS and recycled aggregate in concrete. In this study GGBS is used as partial replacement for cement and recycled aggregate as partial replacement for coarse aggregate.

scholarly journals Influence of GGBS and Marble Dust on Mechanical Properties of Concrete

2020 ◽  
Vol 9 (7) ◽  
pp. 1037-1039
Keyword(s):  
Mechanical Properties ◽  
Research Work ◽  
Literature Survey ◽  
High Tech ◽  
Fine Aggregate ◽  
Split Tensile Strength ◽  
Conventional Concrete ◽  
Granulated Blast Furnace Slag ◽  
Marble Dust ◽  
Furnace Slag

Concrete is a extensively used material in construction. Due to high tech upgrading, the concrete have been matured to augment the equity of concrete. Now a day’s various studies have been conducted to make concrete with waste materials with the intension of reducing cost and demand of materials. This paper investigates the mechanical goods of concrete using Ground Granulated Blast furnace Slag (GGBS) and Marble Dust (MD) as a limited replacement of cement and fine aggregate respectively. Based on previous literature survey, 40% of GGBS and 10, 20 and 30% of MD are taken for the present study. The present research work is aimed at studying the mechanical properties of M20 grade concrete using GGBS and MD. Compressive strength and Split tensile strength were carried out for 7, 28 and 56 days and insignificant increases in the strength were observed for concrete specimens admixed with GGBS and MD when compared with conventional concrete

scholarly journals The Study of the Effect of Nano -Materials on the Mechanical Properties of Polymer Matrix Composite Materials

2019 ◽  
Vol 3 (1) ◽  
Author(s):  
Ibrahim A. Atiyah
Keyword(s):  
Mechanical Properties ◽  
Composite Materials ◽  
Polymer Matrix ◽  
Essential Role ◽  
Industrial Applications ◽  
Polymer Matrix Composite ◽  
Nano Materials ◽  
Nano Silica ◽  
Micro Silica ◽  
Micro Fillers

In a lot of industrial applications the Composite materials have an essential role. The manufacturing of the new composite materials is intended improve the materials applicability. In this work, the influence of silica Nano filler type-and compared that effect with that of silica micro fillers-on mechanical properties of polyester have been investigated. For this purpose, mechanical testing have been used. The addition of Nano  silica and micro silica was in different percentages 1%, 3%, and 5%, due to the fact that Polyester is one of matrix of polymer that is frequently used with strengthening fibers for sophisticated applications of composites because of its resistance to corrosion, cost that is low, smooth coping, and its ability to prevent the outbreak of flame.  

scholarly journals Frost Resistance Number to Assess Freeze and Thaw Resistance of Non-Autoclaved Aerated Concretes Containing Ground Granulated Blast-Furnace Slag and Micro-Silica

Materials ◽  
2019 ◽  
Vol 12 (24) ◽  
pp. 4151
Author(s):  
Eldar Sharafutdinov ◽  
Chang-Seon Shon ◽  
Dichuan Zhang ◽  
Chul-Woo Chung ◽  
Jong Kim ◽  
...  
Keyword(s):  
Blast Furnace ◽  
Frost Resistance ◽  
Blast Furnace Slag ◽  
Autoclaved Aerated Concrete ◽  
Granulated Blast Furnace Slag ◽  
Freeze And Thaw ◽  
Aerated Concrete ◽  
Micro Silica ◽  
Furnace Slag ◽  
Scaling Resistance

Aerated concrete (AC), such as cellular concrete, autoclaved aerated concrete (AAC), and non-autoclaved aerated concrete (NAAC), having excellent insulation properties, is commonly used in buildings located in cold regions, such as Nur-Sultan in Kazakhstan, the second coldest capital city in the world, because it can contribute to a large energy saving. However, when the AC is directly exposed to the repeated freeze and thaw (F-T) cycles, its F-T resistance can be critical because of lower density and scaling resistance of the AC. Moreover, the evaluation of the F-T resistance of the AC based on the durability factor (DF) calculated by using the relative dynamic modulus of elasticity may overestimate the frost resistance of the AC due to the millions of evenly distributed air voids in spite of its weak scaling resistance. In the present study, the F-T resistance of NAAC mixtures with various binary or ternary combinations of ground granulated blast-furnace slag (GGBFS) and micro-silica was assessed mainly using the ASTM C 1262/C1262M-16 Standard Test Method for Evaluating the Freeze-Thaw Durability of Dry-Cast Segmental Retaining Wall Units and Related Concrete Units. Critical parameters to affect the F-T resistance performance of the NAAC mixture such as compressive strength, density, water absorption, air–void ratio (VR), moisture uptake, durability factor (DF), weight loss (Wloss), the degree of saturation (Sd), and residual strength (Sres) were determined. Based on the determined parameter values, frost resistance number (FRN) has been developed to evaluate the F-T resistance of the NAAC mixture. Test results showed that all NAAC mixtures had good F-T resistance when they were evaluated with DF. Binary NAAC mixtures generally showed higher Sd and Wloss and lower DF and Sres than those of ternary NAAC mixtures. It was determined that the Sd was a key factor for the F-T resistance of NAAC mixtures. Finally, the developed FRN could be an appropriate tool to evaluate the F-T resistance of the NAAC mixture.

MECHANICAL PROPERTIES OF SELF-COMPACTING GEOPOLYMER CONCRETE CONTAINING SPENT GARNET AS REPLACEMENT FOR FINE AGGREGATE

2017 ◽  
Vol 79 (3) ◽  
Author(s):  
Habeeb Lateef Muttashar ◽  
Mohd Warid Hussin ◽  
Mohd Azreen Mohd Ariffin ◽  
Jahangir Mirza ◽  
Nor Hasanah ◽  
...  
Keyword(s):  
Environmental Problems ◽  
Fine Aggregate ◽  
Geopolymer Concrete ◽  
Test Results ◽  
Mass Ratio ◽  
River Sand ◽  
Conventional Concrete ◽  
Granulated Blast Furnace Slag ◽  
Concrete Mixtures ◽  
Furnace Slag

Millions of tons of spent garnet, a by-product of surface treatment operations, are disposed of in landfills, oceans, rivers, and quarries, among others every year, thus it causes environmental problems. The main objective of this study is to evaluate spent garnet as a sand replacement in concrete prepared with ground granulated blast furnace slag (GGBS)-based self-compacting geopolymer concrete (SCGC). Concrete mixtures containing 0%, 25%, 50%, 75% and 100% spent garnet as a replacement for river sand were prepared with a constant Liquid/Binder (L/B) mass ratio equal to 0.4. Compressive, flexural and splitting tensile strengths as well as workability tests (slump, L-box, U-box and T50) were conducted on concrete containing spent garnet. As per specification and guidelines for self-compacting concrete (EFNARC) standard, the test results showed that the concrete’s workability increased with the increase of spent garnet, while all the other strength values were consistently lower than conventional concrete (SCGC) at all stages of replacement. The results recommended that spent garnet should be used in concrete as a sand replacement up to 25% to reduce environmental problems, costs and the depletion of natural resources.

scholarly journals Strength and Durability Characteristics of Steel Fibre Reinforced Geopolymer Concrete

2018 ◽  
Vol 7 (3.12) ◽  
pp. 337
Author(s):  
J Jessy Magdalene Anna ◽  
A . Sumathi
Keyword(s):  
Experimental Approach ◽  
Steel Fibre ◽  
Base Material ◽  
Geopolymer Concrete ◽  
Conventional Concrete ◽  
Granulated Blast Furnace Slag ◽  
Waste Glass Powder ◽  
Sorptivity Test ◽  
Strength And Durability ◽  
Furnace Slag

Owing to the upturn inrepair and rehabilitation of structures that undergoes deterioration even before its intended life span; it has become necessary to study the durability properties of the structures. This paper deals with an experimental approach on the strength and durability characteristics of Geopolymer Concrete and Steel Fibre Reinforced Geopolymer Concrete with varying proportions of Fly ash, Waste Glass powder and GGBS (Ground Granulated Blast furnace Slag) as base material cured at room temperature. Sodium hydroxide (14M) and Sodium silicate are used as alkali activators. Steel fibres of length 60mm, 0.75mm diameter are used in two different proportions (0.25% and 0.50%). The results are compared with that of the Portland cement based plain and fibre reinforced control concrete. The durability characteristic involved in this study is Sorptivity test. The results reveal that Steel fibre reinforced Geopolymer concrete procures surpassing characteristics than that of Geopolymer concrete which in turn possess superior characteristics than that of conventional concrete.  

Sign in / Sign up

Export Citation Format

Share Document