The study investigates the possibility of using solid waste as an ecologically beneficial method in the manufacturing of concrete. It looks at the effects of replacing cement with glass powder at percentages ranging from 0% to 30% and a continuous 10% micro-silica replacement. The research evaluates a number of characteristics, including as resistance to freeze/thaw cycles, surface water absorption, capillary water absorption, tensile strength, bending strength, and workability. The results show that adding glass powder to concrete improves its fresh characteristics and workability. However, using glass powder in place of 30% cement results in a little loss of mechanical characteristics. In contrast to other mix designs, the concrete mixes containing 22.5% glass powder exhibit the highest increases in tensile, flexural, and compressive strengths (16.99, 23.53, and 17.65%, respectively). Concretes including 30% glass powder outperform the control design even if the strength criteria are somewhat reduced.

This investigation explores the potential of clay brick powder (CBP) as a partial alternative to cement in mortar compositions, concentrating on the effects of the fineness of CBP, which is produced by grinding brick waste for various durations. A range of mortar mixes was analyzed for characteristics including apparent density, porosity, spreadability, ultrasonic pulse velocity (UPV), flexural and compressive strength, and pozzolanic activity index. The analysis reveals that grinding CBP for 60 minutes leads to a mortar spread that exceeds 95% relative to the reference mix. The addition of CBP enhances water absorption and porosity, yet it does not considerably influence the apparent density. Most of the mortar samples demonstrated satisfactory mechanical characteristics, achieving a UPV near 4000 m/s. While replacing 20% of cement with CBP causes a decline in flexural strength, this decrease is mitigated when the specific surface area of CBP is comparable to that of cement. Assessments of environmental and economic factors demonstrate that integrating CBP into cement formulations leads to a marked reduction in energy usage and CO₂ emissions. Specifically, replacing 20% of cement with CBP of varying fineness levels offers significant environmental benefits and economic practicality.

The current investigation concentrates on evaluating the performance of inhibitors added to concrete to resist corrosion. Specimens were cast with different mix proportions involving various combinations of inhibitors of M30 grade prepared as per Indian standards. For investigating the performance of inhibitors added in the concrete of M30 grade various tests such as pH measurement, Weight loss measurement, OCP otherwise known as rest potential measurement, impressed voltage, Rapid Chloride Penetration test and determination of chloride diffusion coefficient were conducted. To evaluate the strength parameters tests were conducted on the casted specimens of concrete. The tests include compression strength test, flexural and strength test. Results indicated that amine compound-based inhibitor has a more pore-clogging impact which blocks chloride ingress. The polarization and impedance behavior of steel in concrete after the electrochemical injection process exhibited a considerable reduction in the occurrence of the rate of corrosion in steel reinforcement despite the severe chloride ions. IR spectra observations recorded the existence of inhibitor molecules on the embedded steel surface.

This study's objective is to assess the high performance of concrete (HPC) that contains additional cementitious materials such Alccofine, Nano clay and glass powder. Due to demands in the building sector, high-performance concrete is becoming more and more necessary. Concrete's strength and durability can be enhanced by using cement substitutes in conjunction with chemical and mineral admixtures, according to recent efforts to improve the material's performance. Nano clay improves concrete's mechanical characteristics, durability, and fracture resistance by increasing particle packing and decreasing porosity. It also improves workability, strength, and water retention in concrete, making it more durable and permanent. Alccofine are pozzolanic materials that can be used to create concrete composites that are incredibly robust. Glass is not biodegradable, and landfills are not an environmentally beneficial option because it takes a very long time for these materials to break down. Thus, there is a compelling need to use glass waste. The mechanical and durability of a mix of concrete that contains glass powder, Nano clay and Alccofine is examined in this study. 5, 10, 15, 20, 25, and 30% are used in place of the alccofine, 5, 10, 15, 20, 25is used in place of the Nano clay and 10, 20, 30, 40, and 50% are used in place of the glass powder. The performance of concrete mixtures is examined in this study using tests for Compressive strength test, Flexural strength test, Tensile strength test, water absorption, Sorptivity, acid and sulphate attacks, marine environments test, and rapid chloride penetration test at periods 28 and 56 and 90 days. The findings show that adding leftover glass powder to concrete improved its workability and compressive strength, while adding Alccofine increased its durability and decreased the diffusion of chloride.

* Manuscript seems to be very informative as the research is focused towards the problems faced by several buildings at present. * Why authors are restricting the usage of inhibitors in Hcl acid medium? Any specific reasons? * Reason for selectin...