Increasing Concrete Strength by Using Water-Based Polymers
This paper investigates to increase concrete strength by using water-based polymers. To increase the concrete strength, there are various methods are available. Especially, recovery of cracks in concrete is one of the important problems that affect the sustainability of concrete. Researchers have developed many different techniques to increase the strength or repair the damaged concrete structures. However, these techniques require enormous efforts and resources to complete the process. Therefore, many alternative methods have been developed to provide inexpensive solutions to increase the strength and remediate the cracks in concrete. In this paper, water-based polymer materials as a curing method have been used to increase the strength of and concrete and repair the cracked concrete. Different types of concrete including self-healing ones using different cementitious (fly ash and slag) and polymeric materials. A set of experimental tests on the different concrete mixes were carried out using the Ultrasonic Pulse Velocity and compression tests. The study results show that, curing method applied on the concrete samples is promising and increase the compressive strength of concrete. The polymer treatments appear to be an appropriate treatment on concrete.
TiO2 Nanoparticles in Portland Cement: A Life Cycle Inventory Analysis (LCI)
The use of engineered nanoparticles (ENPs) in concrete has been steadily gaining popularity over the past decade-and-a-half. ENPs in concrete provide enhanced engineering properties. Titanium Dioxide (TiO2) nanoparticles are used in concrete, especially pavement because of their self-cleaning and photocatalytic properties. However, these nanoparticles may pose health and environmental hazards and therefore it is important to conduct life cycle studies in terms of applications in cement and concrete. In this paper an attempt has been made to develop a life cycle inventory analysis (LCI) of TiO2 nanoparticles specifically in cement and concrete applications. The results of this study may be potentially used to create a life cycle analysis (LCA) of TiO2 nanoparticles and pave the way for studies of other ENPs used in the cement and concrete industry.