Cracking is a common problem in concrete structures real-life service conditions. In fact, crack-free are very rare to find real world. Concrete can undergo early-age cracking depending on the mix composition, exposure environment, hydration rate, and curing Understanding causes consequences of thoroughly essential for selecting proper measures resolve concrete. This paper will help identify major Also, this be useful adopt effective remedial reducing or eliminating Different types crack,...

The main objective of this study is to investigate the potential use various solid wastes for producing construction materials. paper based on comprehensive review available literature materials including different kinds wastes. traditional methods are using valuable natural resources. Besides, industrial and urban management systems generating wastes, most often dumping them in open fields. These activities pose serious detrimental effects environment. To safeguard environment, many efforts...

Nanotechnology application to concrete presents an innovative approach improve properties based on the ability manipulate cementitious material at atomic scale. This paper a review of nano-materials that have been used in concrete. The literature survey revealed four are most often modify properties; these include nano-silica (nano-SiO2), nano-titanium dioxide (nano-TiO2), carbon nano-tubes (CNTs) and nano-fibres (CNFs). All shown improvement many properties. Both nano-TiO2 nano-SiO2 reduce...

Rapid growth in industrial development has raised the concern of proper disposal by-products generated industries. Many them may cause serious pollution to air, land, and water if dumped open landfills. Agricultural municipal wastes also environmental issues not managed properly. Besides, minimizing carbon footprint become a priority every industry slow down global warming climate change effects. The use supplementary cementitious materials (SCMs) obtained from agricultural, industrial,...

A universal infrastructural issue is wetting of surfaces; millions dollars are invested annually for rehabilitation and maintenance infrastructures including roadways buildings to fix the damages caused by moisture frost. The biomimicry lotus leaf can provide superhydrophobic surfaces that repel water droplets, thus reducing penetration moisture, which linked with many deterioration mechanisms in infrastructures, such as steel corrosion, sulfate attack, alkali-aggregate reactions, freezing...

Concrete structures undergo different forms of damage during their service life. The aim this study is to identify the most common concrete in field conditions. A number elements and were visually inspected was photographed. phenomena covered are delamination, popout, spalling, scaling, drying shrinkage cracking, corrosion-induced map rust salt stains, discoloration, mold moss growths. probable reasons for these discussed study. Moreover, highlights how can be protected from aforementioned...

This paper presents the water absorption and strength properties of short carbon fiber reinforced mortar (CFRM) composite. Four CFRM composites with 1%, 2%, 3%, 4% pitch-based fibers were produced in this study. Normal Portland cement (NCPM) was also prepared for use as control mortar. The freshly mixed tested workability, wet density, entrapped air content. In addition, hardened examined compressive strength, splitting tensile flexural at ages 7 28 days. effects different contents on...

Modeling is a very useful method for the performance prediction of concrete. Most models available in literature are related to compressive strength because it major mechanical property used concrete design. Many attempts were taken develop suitable mathematical different concretes, but not self-consolidating high-strength (SCHSC) containing palm oil fuel ash (POFA). The present study has artificial neural networks (ANN) predict SCHSC incorporating POFA. ANN model been developed and...

The mix design of ultra-high performance concrete (UHPC) is complicated by the presence many "ingredients." fundamental packing density allows a simpler with fewer ingredients to achieve optimum and dense microstructure. particle grading increases flowability UHPC eliminates entrapped air. This study presents simplified approach that positively influences strength, autogenous shrinkage, microstructure characteristics UHPC. Carbon nanofibers (CNFs) superior mechanical properties were added...

Efforts have been put in place to minimize the effects of construction activities and occupancy, but problem greenhouse gas (GHG) emissions continues detrimental on environment. As an effort reduce GHG emissions, particularly carbon countable commercial, industrial, institutional, residential net-zero energy (NZE) buildings were built around globe during past few years, they are still operating. But there exist many challenges barriers for NZE buildings. This study identifies obstacles...

This paper presents the key mechanical properties of PVC fiber-reinforced concrete. Six concrete mixtures were produced using plastic fibers obtained from clear sheets. Three made 20 mm long fibers, whereas other three prepared with 40 fibers. The fiber content was varied in range 0–1.5 wt.% cement for each length fiber. fresh tested workability terms slump. hardened concretes their compressive and splitting tensile strengths, flexural strength toughness, static elastic modulus, impact...