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The mechanical strength of concrete can be improved by promoting cement hydration using plant fibers. As shown in Fig. 17, after the addition of cellulose fibers, part of the mixed water is absorbed during the mixing process, leading to a low
The results obtained show that, plant fibers (barley straw or date palm fibers) can provide improvements in rammed earth strengths such as those that cement
Natural fibre. Concrete. Mechanical properties. Sustainable. 1. Introduction. Currently, concrete is the predominant building material, and it is widely used in the
Chemical admixtures improve the properties of concrete, but they can also pollute the environment (P.K. Mehta et al., 2004, H. Faqe et al., 2020, F Mahmood et al., 2022, mainly because chemical
🕑 Reading time: 1 minuteFactors Affecting Strength of Concrete Concrete strength is affected by many factors, such as quality of raw materials, water/cement ratio, coarse/fine aggregate ratio, age of concrete, compaction of concrete, temperature, relative humidity and curing of concrete. Quality of Raw Materials Cemen Provided the cement
Carbon capture and utilization for concrete production (CCU concrete) is estimated to sequester 0.1 to 1.4 gigatons of carbon dioxide (CO2) by 2050. However, existing estimates do not account for
The environmental impact of concrete, its manufacture, and its applications, are complex, driven in part by direct impacts of construction and infrastructure, as well as by CO 2 emissions; between 4-8% of total global CO 2 emissions come from concrete. Many depend on circumstances. A major component is cement, which has its own
Concrete Admixtures: Air-Entrainment. Air entrained concrete can increase the freeze-thaw durability of concrete. This type of admixture produces a more workable concrete than non-entrained concrete while reducing bleeding and segregation of fresh concrete. Improved resistance of concrete to severe frost action or freeze/thaw
Concrete, an integral part of a nuclear power plant (NPP), experiences degradation during their operational lifetime of the plant. In this review, the major causes of concrete degradation are extensively discussed including mechanisms that are specific to NPPs. The damage mechanism could be chemical or physical. The major causes of
The test results indicate that the compressive strength flexural strength of HSC is about 33.69 13.09% are more than conventional concrete and Percentage mass loss is less when immersed in
The reason for this outcome may be because the pH of vegetation concrete decreases with plant growth, resulting in an increase in the number of hydrogen ions (H +), which can weaken the adsorption
Commonly used organic retarders include: ①Lignosulfonate type retarder: this type of retarder is usually added at 0.2% to 0.3% of the cement mass, and the concrete setting time can be extended for 2 to 3 hours. ④ Retarder for polyhydric alcohol and other substances: polyvinyl alcohol, cellulose
Blended cements, where Portland cement clinker is partially replaced by supplementary cementitious materials (SCMs), provide the most feasible route for reducing carbon dioxide emissions associated with concrete production. However, lowering the clinker content can lead to an increasing risk of neutralisation of the concrete pore
