An Experimental Investigation of Accelerated Carbonation on Properties of Concrete

Hussain, Shaik; Bhunia, Dipendu; Singh, S. B.

doi:10.4186/ej.2016.20.2.29

Cited by 11 publications

(10 citation statements)

References 19 publications

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“…There is also an improvement on the flexural strength of the carbonated samples at 28-day curing period. This is in accordance with the result obtained by some past researchers [32]. The formation of calcium carbonate has improved the flexural behavior of the carbonated concrete acting as a thick protective layer of decreased porosity on the concrete surface [31].…”

Section: Flexural Strengthsupporting

confidence: 92%

“…The results show the compressive strengths of the carbonated concrete samples to be higher than that of the non-carbonated concrete samples throughout the period of the research. The compressive strength results follow the same trend obtained by the Hussain, et al [30].…”

Section: Compressive Strengthsupporting

confidence: 89%

“…Carbonated concrete shows a decrease in water absorption rate with increase in time while the non-carbonated concrete maintain its water absorption rate even with increase in time. Hussain, et al [30], reported in the output of their research work that porosity of concrete decreased with increase in duration in the carbonation chamber which also reduce water absorption rate.…”

Section: Water Absorptionmentioning

confidence: 99%

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Effects of Carbonation on the Properties of Concrete

Ikumapayi¹,

Adeniji²,

Obisesan³

et al. 2019

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Concrete is one of the reliable, durable, economical and acceptable construction materials among the building and construction stakeholders worldwide. Performance of concrete could be threatened especially reinforced concrete by some processes such as corrosion, sulfate attack among others. Corrosion of reinforcement in reinforced concrete can be induced by carbonation process. Even though carbonation initiates corrosion, it has been gathered that carbonation could still be of immense benefits to building and construction industries if its mechanism of operation is understudied. This research work has therefore investigated the effect of carbonation on some selected mechanical properties of concrete such as compressive strength, flexural strength, water absorption and weight changes. Concrete cubes and beams of M15 grade with 0.5 % water-cement ratio were prepared and subjected to accelerated carbonation. Their compressive strength, flexural strength, water absorption and weight changes were determined in accordance with the relevant standards. The outcomes show that carbonation improves all the mechanical properties investigated. The use of carbonation can be positively explored in reinforced concrete provided there is adequate nominal cover.

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Section: Flexural Strengthsupporting

confidence: 92%

Section: Compressive Strengthsupporting

confidence: 89%

Section: Water Absorptionmentioning

confidence: 99%

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Effects of Carbonation on the Properties of Concrete

Ikumapayi¹,

Adeniji²,

Obisesan³

et al. 2019

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“…Certainly, cement is an essential material for the construction sector because of its many advantages including natural abundance, relatively low cost, appropriate mechanical properties, and etc. [2][3][4]. The primary raw materials for cement producing include limestone, shale, and clay, which are accounted over 90% by weight [5].…”

Section: Introductionmentioning

confidence: 99%

Environmental Benefits of the Integrated Alternative Technologies of the Portland Cement Production: A Case Study in Thailand

Khongprom¹,

Suwanmanee²

2017

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Abstract. Under the 20122050, the International Energy Agency (IEA) and the World Business Council for Sustainable Development (WBCSD) have developed a roadmap for the reduction of energy and carbon intensities in cement production. The aim of this research is to study and evaluate the energy consumption (EN), global warming potential (GWP) impact, and economic assessment of Portland cement production. It was found that the total EN and GWP of conventional process were 3.29 GJ per ton of Portland cement and 0.76 ton CO2 equivalent per ton of Portland cement, respectively. The total cost was 1,346 THB per ton of Portland cement. The largest contribution was from fossil fuels used and the limestone calcination in clinker production which produced the total EN of 83.63% and the total GWP of 91.36%, and the total cost of 63%. In addition, the production of Portland cement was environmentally improved by using low carbon fuels, increasing of alternative fuels to fossil fuels ratio, and increasing of pozzolan to cement ratio. The results showed that all improvements significantly reduce the total EN, GWP, and the total cost. When the using of low carbon fuels, the increasing of alternative fuels to fossil fuels ratio, and the increasing of pozzolan to cement ratio, the EN, GWP, and the total cost were decreased by 1.68%, 18.33%, and 4.39% of the total EN and by 25.35%, 3.06%, and 10.45% of the total GWP, and by 4.6%, 4.12%, and 10.64% of the total cost, respectively.

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“…Also, carbonation has a maximum for relative humidity around 50-60% [7][8]. The environmental conditions determine the moisture content in the concrete, which in turn determines the degree of water saturation in the pores, a fundamental parameter in the carbonation process.…”

Section: B Concrete Carbonationmentioning

confidence: 99%

Measurement of the speed of absorption of CO2 by Portland cement pastes and pure and additive mortars

Torre¹,

Valerio²,

Basurto³

et al. 2020

Proceedings of the 18th LACCEI International Multi-Conference for Engineering, Education, and Technology: Engineering, Integrat

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We present here the results of experimental research on the speed of absorption of CO2 by Portland cement pastes and pure and additive mortars. The samples, introduced in a chamber, are exposed to a high concentration of CO2, simultaneously monitoring the temperature, relative humidity, pressure and concentration of CO2 present inside. The results show greater rapidity of carbonation both in cement pastes and in mortars when they are added with plasticizers, air incorporators or workability additives.

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An Experimental Investigation of Accelerated Carbonation on Properties of Concrete

Cited by 11 publications

References 19 publications

Effects of Carbonation on the Properties of Concrete

Effects of Carbonation on the Properties of Concrete

Environmental Benefits of the Integrated Alternative Technologies of the Portland Cement Production: A Case Study in Thailand

Measurement of the speed of absorption of CO2 by Portland cement pastes and pure and additive mortars

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