Written for my Facebook Audience
This is what they do overseas. And that is why their roads last for about 30 years. When the specified lifetime is reached, whether or not the road is damaged, they would simply remove the entire top (the cement, coal tar, and asphalt, leaving intact the rods as you are seeing in the picture), and start a new tarring all over again. The rods fixed into the concrete underneath are permanent features - unremovable. We don't do that in Nigeria. We simply pour the coal tar and cement or gravel on top of the graded red soil as you saw in some of the pictures I shared a few days ago. If we do in Nigeria what they are doing in the picture, especially on the Benin/Auchi road, you would put a smile on the face of travelers for the next twenty to thirty years. And I do hope and pray that the Government of Lagos State that is reported to have taken over some federal roads in the state, adopts the same standard in the reconstruction of the Lagos/Badagry International Highway and the Mile2/Apapa Interchange.
This is what they do overseas. And that is why their roads last for about 30 years. When the specified lifetime is reached, whether or not the road is damaged, they would simply remove the entire top (the cement, coal tar, and asphalt, leaving intact the rods as you are seeing in the picture), and start a new tarring all over again. The rods fixed into the concrete underneath are permanent features - unremovable. We don't do that in Nigeria. We simply pour the coal tar and cement or gravel on top of the graded red soil as you saw in some of the pictures I shared a few days ago. If we do in Nigeria what they are doing in the picture, especially on the Benin/Auchi road, you would put a smile on the face of travelers for the next twenty to thirty years. And I do hope and pray that the Government of Lagos State that is reported to have taken over some federal roads in the state, adopts the same standard in the reconstruction of the Lagos/Badagry International Highway and the Mile2/Apapa Interchange.
Please, I want to state upfront: I am not doing this - writing stories and sharing videos and pictures - because I want to be noticed or given a job in Nigeria. That is far from the truth. I am doing it because Nigerians deserve better. I am doing it because I want to prove that it doesn't take rocket science to govern Nigeria and make it a World-class global empire. We have the brainpower and the natural resources to do them. A President cannot even give an account of the humongous budget for his Aso Rock (not even the Aso Clinic), yet he is junketing abroad looking for money to borrow to fix our infrastructural facilities. For a start, cut your budget for your Aso Villa and Aircrafts. Then cut the salaries and emoluments of our National Assembly members. Then eliminate the Security votes for all our Governors. You will have enough funds to put Lecturers back to work.
I am not naive; If I need your job or appointment, I won't be writing or having an opinion on our national issues. I am a minority of the minorities, and I have a good understanding of what is marginalization. Just do the right thing and I will stop talking.
Kolade Larewaju
Road construction in Germany. Tell me, how can this road develop potholes even in 100 years?
Ibrahim M. Augie Even airports that take heavy toll of aircraft landings arent surfaced this way.
Ibrahim M. Augie Most likely this portion has a deep clay layer underneath ..
- Alex Ehimhantie'Aiyo Aidaghese Exactly
Alex Ehimhantie'Aiyo Aidaghese There is permanent layer of concrete underneath the rods. Once the steel rods are laid on the top, they become permanent features. What they do is to deposit another set of mixed asphalt, coal tar, and cement on top of the rods. In Nigeria, we don't have the underneath rods and concrete. We deposit ours mixed cement, asphalt and coal tar on top of the graded ground floor.
Gideon Odion Ataya Based on my experience, this method of road construction might not be suitable for Nigeria terrain based on the available geotechnical data. As you you know, Reinforcement slab concrete would crack due to linear and cubic expansion of steel in relation to the temperature increase. You know Nigeria Climate. Moreover, the best option would be a minimum layer of improved soil which should be tested as per ASTI or any similar standard, followed by sufficient layer of road base, wet mix macadam, sub base and the final wearing course as per standard requirements.
Alex Ehimhantie'Aiyo Aidaghese Interesting. Thank you, Mr. Gideon Odion Ataya, for adding your expertise to the discussion. We analyze what we see from a layman point of view. I thank you for your insights.
Gideon Odion Ataya Moreover, this method would require expansion joints for steel expansion which would be rather expensive or might affect the road evenness. Check bridges, expansion joint is provided at regular intervals.