There is nothing worse for curb appearance than chipped and cracked concrete, particularly in steps. But you don’t have to put up with that blight any longer. By the result of weather changes exerted on an existing construction for prolonged time, it causes contraction and expansion those gradually results concrete steps cracks and break up with time.
Dear researchers, I would like to get expert opinions on how to fix this issue with,
I think it is important to conduct primarily an assessment (condition assessment, visual inspection, load testing, etc) to identify exactly the origin of the crack). Check if these cracks are dormant or active crack.
Crack in reinforced concrete structure may originate from loading condition (Structural crack), chemical detoriation of concrete (Akali silica reaction, corrosion of rebars, etc), and so forth.
The repair method must be based on assessment report.
Remove chipped concrete and any friable material to the fullest extent possible. Remove any corroded rebar back to the point where metal and concrete are solid. Treat remaining corrosion on rebar with a rust stabilising solution and ensure good penetration as far as possible. If you the damage is substantial, you may need to provide a reinforcing key into the existing concrete. This could be retrofitted by drilling holes and fitting a proprietary helical bar system such as Twistfix, which can be hammer drilled into the holes, to provide stubs to connect to any new rebar. Then shutter and refinish with an epoxy mortar which provides added strength for concrete restoration. This may require a primer to bond to the existing concrete. The epoxy mortar is super strong. Depending on what surface finish is appropriate, finishing everything in a nice high build epoxy paint would finish things nicely and provide a durable surface finish. Possible also to buy with grit e.t.c. for non slip properties. Alternatively, a retrofit GRP sheet with embedded grit would provide a high quality protective finish and cover for the underlying concrete.
The above of our two research articles are two of our important efforts on how to conserve the soil and use it for the enhancement of reforestation to mitigate climate change impacts such as Urban Heat Island, loss of endemic species, scarcity of water and greenhouse gas emissions which are the leading concerns in urban built environment. Our articles have addressed a way to achieve the sustainable development goals such as SDG6, SDG12 and SDG 13.
Soil resources are most critical prerequisites those need to be conserved, utilized and given back to the earth to enhance the sustainable existence of living organisms. Current technological trends are mostly focusing on mining the soil resources and fulfilling the human needs using anthropogenic activities. This trend needs to revisit, addressed the research gaps and more interests need to be shown by researchers and stakeholders to enhance the optimum usage of soil resources with minimal harmful effects to nature.
I request the researchers to provide your opinions in this regard. Thank you.
The challenges facing humanity in the twenty-first century include climate change, population growth, overconsumption of resources, overproduction of waste and increasing energy demands. For construction practitioners, responding to these challenges means creating a built environment that provides accommodation and infrastructure with better whole-...
This publication contains the summaries of the diploma theses made in the Department of Structural Engineering during the years 1992-1993 in Helsinki University of Technology, Faculty of Civil Engineering and Surveying.
Breve referencia de la trayectoria profesional − Ingeniero Civil, Master en Teoría y Aplicación Práctica del Método de los Elementos Finitos y Simulación, Magíster en Ingeniería Vial y Doctor (Ph.D.) en Ingeniería. − Más de 20 años de experiencia como docente universitario (grado y posgrado) y consultor. − Decano de la Facultad de Ciencias y Tecnol...