Optimization of Self-cured High-Strength Concrete by Experimental and Grey Taguchi Modelling

The use of ordinary Portland cement (OPC) in the construction industry is inevitable. The huge production of OPC and its use in infrastructural development pose an environmental impact. Greenhouse gas emitted increases the global temperature and it is an alarming sign to everybody on the planet. Concrete is the most consuming material which is produced by using OPC and it is proven that OPC contributes a lot to CO2 emission. Hence in this study attempt is made to produce concrete by using environment‐friendly material like fly ash along with alkaline activators, which is termed Geo polymer concrete. The by‐product fly ash is widely available worldwide. It is a by‐product of thermal power plants. The use of fly ash in concrete produces less expensive and more cost‐effective concrete than concrete made up using OPC. Due to its high silicate and alumina content, fly ash reacts with an alkaline solution to create an aluminosilicate gel that binds the aggregate and results in high‐quality concrete. Fly ash is finer than cement, it occupies the pores of cement after hydration. This would result in denser concrete which gives higher strength. In comparison to ordinary concrete, fly ash‐based geopolymer concrete offers better resistance to aggressive environments and high temperatures. In the present study, an alkaline activator of molarity 8 is used to prepare geopolymer concrete. The test specimens are cast and cured for 28 days. Test results indicate that an alkaline liquid fly‐ash ratio (0.4) produces higher mechanical properties. Hence, geopolymer concrete produced in this study is found to be cost‐effective and environment friendly.

Section: Observations and Test Resultsmentioning

confidence: 99%

Evaluation of Properties of Concrete Without Cement Produced Using Fly Ash‐Based Geopolymer

Disale,

Nayak,

Suryawanshi

et al. 2024

“…The compressive strength was increased up to the great extent when bacterial spores used in the concrete while the porosity and the permeability found to be reduced. [ 28,29 ] The calcite deposition was observed on the cracked portion. [ 30 ] There is a great impact for the CaCO 3 crystal methodology and it depends upon the type of culture of bacteria used.…”

Section: Bacterial Self‐healing Mechanismsmentioning

confidence: 99%

Self‐Healing Molecular Biology for Microbial Concrete: A Review

Zanjad,

Pawar,

Nayak

2024

The most extensively utilized material in construction is concrete, decreasing life of structure pointing toward loses in structural health. The crack is the major problem faced in the concrete construction. This causes the corrosion in the steel reinforcement. The structure gets deteriorated with the developing cracks; therefore need the proper attention toward this problem. The present work consists of the different self‐healing techniques used by the researchers to inhibit the crack and prevent further deterioration in the structure. The self‐healing mechanism proves advantageous in use of natural fibers to inhibit the corrosion process, to increase compressive strength, and to decrease water absorption is present in this study. The maximum strength increased and the width of crack get healed with the help of these techniques is also mentioned in the study.

“…[11] In ancient time our ancestors used a lot many natural additives to improve the DOI: 10.1002/masy.202300011 quality of Lime mortar/concrete. [12,13] This can be done using some industrial inert waste materials as additives to concrete also. [14] As a proof from the available structures constructed before centuries and are still in good condition, it can be justified that the additives used had significant effect on strength, durability, and other parameters of concrete.…”

Section: Introductionmentioning

confidence: 99%

Organic Admixtures as Additive: An Initiative to Reduce Carbon Dioxide Emission due to Concrete

Bengal,

Ghodmare,

Nayak

et al. 2024

Concrete is a material which is being used extensively for construction worldwide. Concrete provides high strength, durability, impermeability, fire resistance, and hence provides a safe place for living. It is the composite of cement, aggregates, and water. In modern construction, chemical admixtures are also used to elaborate the properties of concrete like strength, workability, etc. but the chemical admixtures have adverse effects on environment at the time of production and post‐production also. Whereas organic admixtures are extracted organically from plants and animals without addition of any external chemicals. Many organic admixtures are used in lime concrete/mortar traditionally. The purpose of this paper is to enlighten the effect on quality of concrete by addition of organic additives jaggery and sticky rice pulp, which will in turn reduce the cement requirement and overall CO2 emission in the environment.