Fresh and Hardened Properties of Self-Compacting Concrete Comprising a Copper Slag

India, a developed country with a bounty of resources, has produced a large number of biopolymers that were employed in historical construction. If these biopolymers are proven through research to have positive aspects, it would eventually result in the development of environmentally friendly, cost-effective, and long-lastingstructures. Although many of the efficient inhibitors, like chromate and arsenate, are exceedingly poisonous, the price of inorganic inhibitors is generally inexpensive. As neem and turmeric extracts are readily available and may be obtained year-round in concrete, they should be further investigated as corrosion inhibitors in various ratios and combination. This experimental investigation can be used to provide a corrosion inhibitor that is affordable, non-toxic, eco-friendly, and user-friendly.The application of biopolymer in concrete has been supported by the results of the feasibility study, which additionally showed promising result for aexcellent corrosion inhibitor from the phytochemical analysis and results for compressive strength.

supporting

confidence: 89%

An investigation of biopolymers in corrosion resistance under industrial exposure condition

et al. 2024

“…All the reviewed articles demonstrate that the presence of shear cracks has no impact on the shear strength when utilizing the NSM-CFRP technique, in comparison to uncracked elements. When considering different orientations of CFRP, whether in the form of bars or laminates, a 45-degree inclination provides the highest shear strength compared to other angles [20][21][22][23][24][25][26]. Lastly, when comparing experimental and numerical studies, it is evident that numerical studies exhibit a high level of accuracy in terms of crack patterns and loaddeflection curves.…”

Section: Discussionmentioning

confidence: 99%

Review on NSM-CFRP Method for Enhancing Shear Capacity in Reinforced Concrete Deep Beams

Faney,

Hema Priya

2024

The demand for improved strengthening techniques for current concrete structures is on the rise. Many structures that will still be in use two decades from now have already been constructed. A portion of these structures must undergo enhancements or be replaced, as they are deteriorating not only from natural processes but also from mistakes made during their design and construction. Near-surface mounted (NSM) utilizing Fiber-Reinforced Polymer (FRP) bars has proven to be a successful method in enhancing the flexural and shear performance of both existing and new Reinforced Concrete (RC) elements. This technique is considered innovative and rapidly developing, attracting significant attention from researchers. Therefore, this study aims to analyze previous and current research on the shear strengthening of RC deep beams using NSM-CFRP bars. The research findings were gathered from four prominent databases: ASCE, EBSCO, SCOPUS, and Science Direct. A thorough literature review was conducted, focusing specifically on NSM-CFRP for shear strengthening. A total of 56 articles were categorized into three main groups. Group 1 consisted of studies examining the use of NSM for shear strengthening, while Group 2 focused on articles related to the structural behavior of RC members in shear. Group 3 included articles discussing the theoretical aspects of NSM-FRP in enhancing shear strength, aiming to develop a new method for calculating shear effects provided by NSM-FRP. In conclusion, this study highlights three fundamental aspects of this field: (1) the rationale behind utilizing NSM-FRP bars for shear reinforcement and their practical applications, (2) existing challenges and barriers to widespread adoption, and (3) recommendations for enhancing the acceptance and utilization of NSM-FRP bars.

“…The values of UPV test were shown in figure 4. The major goal of a UPV test is to determine the quality and uniformity of the material and to discover internal faults such as voids, cracks, and other similar defects [36][37][38][39][40][41][42][43]. Even if the compressive strength reduces beyond 10% substitution, the improving UPV with increasing substitution amount suggests that the addition of marble dust powder increases the homogeneity of the material.…”

Section: Ultrasonic Pulse Velocitymentioning

confidence: 99%

Effect of Marble Dust Powder on the Properties of Fresh and Hard Concrete

Singh,

Sharan Singh,

Gupta

et al. 2024

The goal is to investigate the potential for employing byproducts from various industrial processes in the creation of ground-breaking mortar and concrete. The dust produced during the marble-cutting operation is put to good use. Different percentages of this garbage were recommended to be used in conjunction with or in place of cement in the making of concrete. The research looked into the possibility of using marble dust, which is produced during the shaping of marble blocks, as a cementitious material in concrete. In areas where they are readily available and can reduce construction costs, the study found that dust from marble slabs could be employed as a cementitious material in concrete mixtures. The discarded marble dust is mixed with cement in proportions of 5, 10, 15, and 20% of the standard concrete mix. Both the fresh and hardened characteristics of the produced combinations were investigated. Compressive and tensile strengths were measured after being cured for varying periods of time, both when marble dust was used as a partial replacement and when it was not.