Journal of Construction and Building Materials Engineering

Experimental Investigation of High-Strength Concrete Reinforced with Different Types of Fibers

2026-07-28T12:02:32+00:00

Concrete is a popular building material because it is strong, lasts long, and can be used in many different ways. It is not very good at withstanding pulling forces and can break easily, which can cause cracks. These cracks can hurt how well concrete structures work over time. Adding fibres to concrete has become a way to make it better. Fibres can help prevent cracks, make concrete more flexible, and improve how well it works. This study looks at concrete with two types of fibres: steel and glass. The study tested samples with different amounts of these fibres. The samples were made using a composition and tested after they had cured. The tests checked how strong the concrete was when squeezed, pulled, and bent. The results showed that adding both types of fibres made the concrete stronger in all the ways tested. The best mix, called Mix M3, was 17% stronger when squeezed than regular concrete. It also did better when pulled and bent. The fibres worked well together. The steel fibres stopped cracks from forming and helped the concrete hold its load even after it had cracked. The glass fibres stopped cracks from forming and spreading. Together they made the concrete tougher, more flexible, and better at absorbing energy. This means that concrete with both steel and glass fibres could be a choice for building things that need to be strong and last a long time. It could be used for buildings and roads. The findings of this study suggest that hybrid fibre-reinforced concrete can serve as a durable construction material for structural applications requiring enhanced mechanical performance and improved resistance to cracking.

Seismic Vibration Control of Buildings Using Friction Dampers and Base Isolation Techniques

2026-07-23T05:00:20+00:00

Over the last four decades, research on methods to reduce earthquake impacts on buildings has significantly increased, following the advent of base isolation techniques and energy dissipation devices. This surge in research is attributed to advancements in the field. Investigations have focused on the effects of lead rubber bearings (LRB) as base isolators and friction dampers as energy dissipation devices, both individually and in combination, within an eight-storey ‘C’-shaped structure. The analysis was executed using the ETABS program, applying linear response spectrum analysis methodology due to the building being located in seismic zone 4. Response factors studied include time period, base shear, storey displacement, and storey drifts. Findings indicate that the integration of these devices, both separately and as part of a dual control system, reduced the structural responses, enhancing the building’s seismic resistance. This enhancement was achieved through a decrease in energy within the building. The study also compares the results obtained from these methods against traditional models, highlighting improvements in performance.

Construction Waste Management in India: Challenges, Practices, and the Need for Sustainable Recycling

2026-07-31T10:03:34+00:00

India is a developing nation where waste management is necessary because the country’s growth rate is rising along with its garbage output. The construction industry has grown extremely quickly as a result of the growing population, the IT sector, new infrastructural projects, and industrialization. Due to significant material waste in construction projects, builders are confronted with financial difficulties. The waste material hurts the whole ecology, aesthetics, beauty, and health. In local building sites in India, high material waste, improper material management, and a lack of awareness regarding waste reduction and optimal utilization are all very typical. It is highly cost-effective for European nations to recycle between 80 and 85 percent of their total construction waste. The technology they employ for recycling is very simple to implement and reduces material waste. Waste management is a major issue in many places, and control of waste materials is necessary because they play a devastating role in the nation. Due to a lack of regulation and stringent administration, indisciplinary behavior, and a lack of focus on this issue, waste material in India cannot be accurately estimated. The building and construction sector contributes significantly to garbage generation. Therefore, cutting down on building waste is a significant priority for governments worldwide today. Construction companies benefit from generating less waste because it reduces disposal costs and the need to purchase virgin materials. This study provides a summary of the government’s primary sustainability policy areas. The significance of the 3Rs—reduce, reuse, and recycle—for waste management is highlighted in greater detail in this study.

Performance Evaluation of Pre-Engineered Building with Different Slopes

2026-07-27T11:40:42+00:00

Pre–engineered buildings (PEBs) are increasingly preferred in industrial, commercial, and storage applications due to their cost–effectiveness, reduced construction time and structural efficiency. The roof slope is a critical design parameter influencing structural performance, material consumption, drainage and overall stability. This study evaluates the structural performance of PEB frames with varying roof slopes of 1 in 10, 1 in 15 and 1 in 20 under different loading conditions as per IS 800:2007 and IS 875 guidelines. A 48 m span, 8 m eave height steel frame is modeled in STAAD Pro V8i with tapered sections to assess parameters such as maximum deflections, axial force distribution, bending moments and weight optimization. Comparative results indicate that increasing slope improves drainage efficiency and reduces horizontal thrust, but it may lead to a marginal increase in steel consumption. The findings provide valuable insights for selecting optimal roof slopes in PEB design, balancing structural performance and economy.

Impact of Constant Strain Level (CSL) and Additives on the Flow Number (FN) of Asphalt Concrete (AC)

2026-05-02T10:53:18+00:00

The flow number (FN) of asphalt concrete (AC) is the number of load repetition cycles at which the flow of aggregates within the AC structure begins, microcracking initiation, and permanent damage occur in the AC mixture. Such a flow of material constitutes an AC structure that can be differentiated by a significant variation from the linear trend relationship between the number of loading cycles and cumulative strain. Such permanent strain (PS) is unrecoverable. The FN is an important variable since it correlates well with the rutting potential of AC pavement. In this work, the influence of binder additives such as silica fumes (SF) and coal fly ash (CFA) on the FN of the AC mixture was investigated. Slab samples of roller compacted AC (control and modified) have been prepared with optimum binder requirements. AC beam specimens were obtained from the prepared AC slab samples and tested for fatigue life (FL) with the aid of a dynamic four-point flexural bending beam test under a moderate environment of 20°C. It was noticed that the implementation of coal fly ash into the AC mixture exhibits a significant decline in FN by (16.6% and 33.3%) for (400 and 750) CSL, respectively, when compared with the control AC mixtures. Implementation of silica fumes into the AC mixture exhibits a significant increase in FN at high constant strain levels by 77.7% for 750 constant microstrain levels when compared with the control AC mixtures; however, the variation in FN under (250 and 400) microstrain levels was not significant. Power mathematical models were obtained representing the rate of change in the FN of the AC mixture through FL due to the implementation of additives.