Utilization of Mineral Sequestration for CO2 Capturing in Car Parks and Tunnels

Abstract

Decreasing the emissions of CO2 that come from vehicle exhaust, especially in car parking and tunnels, is so vital. CO2 emissions cause corrosion to a reinforcement of concrete. Thus, there is a need to provide a layer that protects the reinforcement from the reach of this harmful gas. This work goals to investigate the efficiency of using board units from Pozzolime concrete and pervious concrete to sequestrate CO2 from the environment and then to convert it into calcium carbonate inside the concrete. The units have dimensions of (200×400×40±5). All specimens were cured in a water tank after about 48 hours after casting. Then paint the sample from all surfaces (three layers) excluding the top surface. The pervious concrete and Pozzolime specimens, at age of 28 days, were put in the chamber, then the gas was supplied to the chamber with concentrations of 15%, 25%, and 50 %, for 24 hours. The efficiency was evaluated through carbonation depth, CO2-uptake, and weight change. The results showed that the maximum CO2 uptake was recorded at the age of 28 days for Pozzolime concrete when exposed to 50% of CO2 concentration.

Post-Fire Behavior of Modified SIFCON One-Way Plates with Waste Tire Rubber under Flexural Load: Experimental and Numerical Study

“…The majority of landfill operations do not allow the disposal of whole tires due to the size of the flames and their propensity to ascend to the surface with time. Investigations have revealed that used rubber tires contain materials that are harmful and do not disintegrate in the environment [10]. Tires can be utilized as aggregates in concrete based on these issues.…”

Steel Fiber Addition in Eco-Friendly Zero-Cement Concrete: Proportions and Properties

“…Researchers are being urged to investigate alternatives, such as the reinstitution of lime Pozzolanic systems. Lime might be considered an ecologically friendly binder due to its low energy needs, limited CO 2 emissions during production, and carbonation-induced CO 2 uptake through setting [1]. Lime natural Pozzolans are ancient building materials that were utilized in the process of building using masonry.…”

Optimum Steel Fiber Content of High Strength Pozzolime Concrete

“…Currently, researchers are being encouraged to consider further options, one of which is the re-adopt of lime-Pozzolana systems. Lime could be regarded as an environmentally-sound binder because of its low energy requirements, minimal CO 2 emissions during manufacturing, and CO 2 preoccupation via carbonation during setting [2]. Lime-natural Pozzolana is a building material was used in masonry a long time ago [3].…”