Cracks are a fundamental problem in concrete, so this research investigates an experimental study of the effect adding SiO2 on self-healing behaviour concrete. The is done by studying physical properties, microstructure, and mechanical properties Microcapsules were prepared to contain (cement nano SiO2) (palettization (fluidize bed coating) method) with (5,10, 15) % cement weight. ratio concret...

Abstract Additive manufacturing is gaining more significance in architecture and construction due to a shortage of skilled workers, resource scarcity increasing design requirements. Over the past years, approaches for layer-wise spatial extrusion concrete were developed automated, formwork free complex processing. The possible an inert support suspension that stabilizes strands during hydration...

The article presents an analysis of the results experimental studies effect different types a super absorbent polymer additive on strength concrete. study is aimed at effectiveness new type in concrete structures. In course full-scale experiments, it was possible to identify optimum dosage SAP for fine-grained and heavy concretes. addition, showed that remains unchanged if (SAP) 0.5% weight cem...

in this paper, the effect of polypropylene fibers added to concrete on strength and thermal resistance of high strength concrete has been investigated. therefore, five tests have been carried out to reach this goal which it includes; effect of weight percent of polypropylene fibers on mechanical properties of concrete, effect of fiber’s length on the strength of high strength concrete, effect o...

The most common and reliable material without which modern construction is indispensable concrete. development of production pushing for new solutions to improve the quality concrete mix demanded significant indicators a mixture are compressive strength mobility mixture. Every year, volume research on nanomaterials as modifying components significantly increasing, results indicate prospects the...

Porous concrete is a mixture of cement and water that may contain fine grains, which play a role in water transfer and permeability. Porous concrete can act as a drain to pass rainwater and recharge groundwater. In this study, 25%, 50%, 75%, and 100% zeolite were used to replace the coarse aggregates in porous concrete. The effects of the zeolite on the compressive strength, permeability coeffi...

Background: In megavoltage radiotherapy rooms, ordinary concrete is usually used due to its low construction costs, although higher density concrete are sometimes used, as well. The use of high-density concrete decreases the required thickness of the concrete barrier hence, its disadvantage is its high cost. In a nuclear reactor, neutron radiation is the most difficult to shield. A method for p...