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Uncontrolled infrastructure expansion depletes natural resources, and waste plastics are regularly thrown into the environment and oceans, putting nature, humans, and aquatic life at risk. These risks can be mitigated by properly disposing of plastic waste. Plastic waste management, such as reusing building waste materials, reduces pollutants that cause pollution and the demand for natural resources. The primary purpose of this research is to look into the possibility of using waste plastic as a target material for partial volume reduction in concrete blocks. The single-use polyethene terephthalate (PET) trash is placed in a PET container and compressed securely with a tampered rod. The PET bottle's opening is sealed with a polypropylene plastic cap. A concrete mix grade of (M25) is employed for this experiment. [ABSTRACT FROM AUTHOR]

Nowadays the call for sand has accelerated immensely, inflicting deficit of appropriate river sand in diverse components of Telangana. Therefore, searching out an opportunity to river sand, Robo sand is determined economical. It competes absence of deleterious substances and higher fine makes it most effective to apply in concreting and plastering. Metakaolin may be a dehydroxylated form of kaolinite clay, that is taken into consideration to be a treasured mineral admixture having two times the reactivity of maximum of different pozzolans. Metakaolin reveals favorable engineering residences along with filler effect, acceleration of OPC, hydration and pozzolanic response which makes it beneficial to get replaced via way of means of cement. Steel reinforcement is high priced in creation enterprise to triumph over this difficulty, a fee powerful however secure constructional cloth is needed. Natural fibers may be one capability cloth, as they're in reasonably-priced and domestically to be had in lots of places. Taking most of these advantages into account, on this gift research the herbal coir fiber the use of metakaolin as cement substitute with completely changed Robo sand is used to triumph over the brittleness of the concrete. [ABSTRACT FROM AUTHOR]

In this study the recycled coarse aggregate (RCA) obtained from a single source was used and the compressive strength was found to be 25 MPa before demolition. Raw recycled coarse aggregate is hand-picked from the demolished concrete rubble. Recycled coarse aggregate has old cement mortar attached to its surface so when reused in concrete, this loose old cement mortar is removed from the surface making the concrete perform poor in strength and durability. So before using in concrete, recycled coarse aggregate is being treated in various ways to enhance its strength and durability properties in concrete. In the current study, various pre-treatments methods such as Mechanical treatment (Autogenous cleaning), Thermal - mechanical method, Pre-soaking in water (Pre-Saturation), Pre-soaking in acid, Two-stage mixing approach (TSMA), Three step method, Self-healing method, Mineral admixture solution, Polymer emulsion, Microbially induced calcite precipitation and Carbonation are tested for their suitability and few recommendations are made. [ABSTRACT FROM AUTHOR]

For the past decade, researchers have been working hard to replace traditional non-destructive testing procedures with structural health monitoring techniques based on smart materials. Piezoelectric materials proved to be effective smart materials because of the cost-effectiveness of structural health monitoring (SHM). Electro Mechanical Impedance (EMI), the sensitivity of the piezo-impedance (Lead Zirconate Titanate, PZT) transducer technology in detecting local damage is well recognized. Many factors affect the effectiveness of damage detection using the EMI technique, including selection of frequency range. In the present project numerical studies are conducted on smart cantilever beam with on steel with and without induced damage for various frequency ranges. Based on the changes in conductance signatures of pristine and damaged beam, the optimum frequency range is identified. It is inferred that the sensitivity of the patch for a particular material for the given geometry varies significantly under a given frequency range. The findings are discussed and presented. [ABSTRACT FROM AUTHOR]

This paper presents the assessment of the strength at early age and automatic curing of concrete using the IoT (Internet of things). IoT can be used for SHM (structural health monitoring) and for other civil engineering applications. Evaluating the strength of concrete structures at early age is very important for a structural engineer, similarly the controlling the waste of water during continuous curing of concrete done manually is also a matter of concern. So the concept of assessing the early age strength using smart rock sensor and automatic curing using moisture sensors are installed to address the above issues in construction. The functioning of these entire processes can be monitored and controlled from remote location. [ABSTRACT FROM AUTHOR]

This paper presents the use of modified method of constant voltage technique, electrical resistivity and corrosion potential measurements in determining the effectiveness of corrosion inhibitors' in concrete in arresting corrosion in the steel rebars in reinforced concrete specimens. Accelerated corrosion test is conducted on the different corrosion inhibitor mixed reinforced beams made with different cover thickness to understand the effect of cover thickness and type of inhibitor on the rate of corrosion based on the accelerated cracking initiated. Various inhibitors of corrosion, including calcium nitrite, sodium nitrite, hexamine and Diethanolamine, have been used in optimal dosage and investigated for their corrosion resistivity in concrete. [ABSTRACT FROM AUTHOR]