Effect of Curing Methods on the Compressive Strength of Palm Kernel Shell Aggregate
Concrete

Oluwasola, Ebenezer Akin; Afolayan, Abayomi; Ameen, Ibni; Adeoye, E. O.

doi:10.36108/laujoces/0202/50(0120)

Cited by 5 publications

(2 citation statements)

References 4 publications

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“…Curing is defined as the process of controlling the moisture and temperature during the cement hydration. James et al [ 62 , 63 ] studied the effect of different curing condition on the compressive strength of concrete. The water curing is the best curing condition for normal concrete to produce higher compressive strength, followed by wet covering and sprinkling having the least compressive strength.…”

Section: Introductionmentioning

confidence: 99%

Relation between Density and Compressive Strength of Foamed Concrete

et al. 2021

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This study aims to obtain the relationship between density and compressive strength of foamed concrete. Foamed concrete is a preferred building material due to the low density of its concrete. In foamed concrete, the compressive strength reduces with decreasing density. Generally, a denser foamed concrete produces higher compressive strength and lower volume of voids. In the present study, the tests were carried out in stages in order to investigate the effect of sand–cement ratio, water to cement ratio, foam dosage, and dilution ratio on workability, density, and compressive strength of the control foamed concrete specimen. Next, the test obtained the optimum content of processed spent bleaching earth (PSBE) as partial cement replacement in the foamed concrete. Based on the experimental results, the use of 1:1.5 cement to sand ratio for the mortar mix specified the best performance for density, workability, and 28-day compressive strength. Increasing the sand to cement ratio increased the density and compressive strength of the mortar specimen. In addition, in the production of control foamed concrete, increasing the foam dosage reduced the density and compressive strength of the control specimen. Similarly with the dilution ratio, the compressive strength of the control foamed concrete decreased with an increasing dilution ratio. The employment of PSBE significantly influenced the density and compressive strength of the foamed concrete. An increase in the percentage of PSBE reduced the density of the foamed concrete. The compressive strength of the foamed concrete that incorporated PSBE increased with increasing PSBE content up to 30% PSBE. In conclusion, the compressive strength of foamed concrete depends on its density. It was revealed that the use of 30% PSBE as a replacement for cement meets the desired density of 1600 kg/m3, with stability and consistency in workability, and it increases the compressive strength dramatically from 10 to 23 MPa as compared to the control specimen. Thus, it demonstrated that the positive effect of incorporation of PSBE in foamed concrete is linked to the pozzolanic effect whereby more calcium silicate hydrate (CSH) produces denser foamed concrete, which leads to higher strength, and it is less pore connected. In addition, the regression analysis shows strong correlation between density and compressive strength of the foamed concrete due to the R2 being closer to one. Thus, production of foamed concrete incorporating 30% PSBE might have potential for sustainable building materials.

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Section: Introductionmentioning

confidence: 99%

Relation between Density and Compressive Strength of Foamed Concrete

et al. 2021

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“…The researchers focus on exploring alternative materials instead of natural sand and other resources as alternative aggregates with better concrete properties (Oluwasola et al 2020). Using alternative materials and recycled fi ne concrete aggregate can reduce the exploitation of natural resources and promote eco-friendly construction methodologies.…”

Section: Requirement For Alternative Fine Recycled Concrete Aggregatementioning

confidence: 99%

Review on Impact of Construction Waste Landfill on Environment and its Reutilization

Sivamani¹,

Kamaleshwar²

2022

Ecol. Eng. Environ. Technol.

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In several countries, the use of recycled coarse aggregate in construction materials is recommended; however, the use of organic matter is restricted because it can produce significant changes in compressive strength. In terms of reaching a conclusive viewpoint regarding the research topic, secondary data collection analysis has been selected. It is essential to utilize the recycled and by-products wastages to prepare alternative materials as this can be useful in generating a significant amount of fine concrete aggregate. As a result, it reduces the extreme exploration of essential natural resources and meets the requirements of natural concrete aggregates by using the alternative and recycled fine concrete aggregate. Moreover, the alternative materials come with similar properties and physical behaviour as they sustain the durability and compound stability of the concrete aggregate through the use of recycled cement. The disposal of industrial wastes can cause extreme environmental harm that can be reduced via recycled cement. However, it has been noted that the presence of harmful materials can result in issues regarding durability. Thus, it is essential to arrange materials for recycled cement that can be effective for construction activities. In order to maintain environmental sustainability and reduce environmental hazards, it is important to utilize the wastages for generating alternative concrete aggregates such as crushed rocks. Thus, this paper reviews the environmental effects of concrete waste pollutants and its sustainable reutilization to promote a cleaner environment and offer benefits to the construction industries with a positive effect.

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