Ngwakwe: How will the dust oozing out from the road over time be managed considering high temperature and low humidity in our clime?

At a speed of 120km/h the vehicle behind yours may have visibility problem when the road starts degenerating.

...and let me add that with the present extremely high cost of cement, l am wondering if it will be affordable for ordinary folks, to use in building their house?

Nnna, this kin innovation could turn out to be a two-edged sword!

SummerT: Stop fooling yourself! Who says cement is good on roads? It can never be compared to asphalt? Are the developed nations using it? Why can't we go for something that will last and can withstand the test of time. Its better to take the pain now to make standard and durable materials rather than plastering year after year.

alpontif:

I am relaxed, I am not prone to losing my cool over issues with faceless bots on the internet, not in a 100 years.

I am not proud, just assertive. I know what I know.

But I am not gonna take this literally, coz this is not about me.

The issue is I do not think it smart that non domain experts discuss expert knowledge that ONLY domain experts can intelligently discuss without arriving at wrong conclusions. non experts do not even ask the right questions, since there premise is not backed by any technical training or experience in the domain to which the pretend to debate.

This usually results in misinformation and the propagation of half baked ''expert'' opinions.

You cannot find me discussing the merits and demerits of surgical techniques for complex proximal tibial fractures, that
can only be discussed by the domain experts, that is the surgeons practicing in that field, you may trust their conclusions, or not, but it is silly for a Civil engineer to start debating or discussing that.

Civil Engineering Design practices and construction is not forex or stock trading, that you can learn and understand practically without a proper technical training in it in a week.

Leave the domain topic to the domain experts, then you will not have a layman arguing with the Engineer on a project just because he got some misinformation from a forum on the internet.

emiye:

You are so annoying .

You lead me on, and i was waiting for your "domain expert" opinion, and i did not see any, all i saw was long ranting epistle from you fighting everyone to stop commenting on the thread since they are not "domain experts"

Gosh, i wish i can sla* you from my system.

♥Dεs•Chγκσ♥:
What I keep remembering is when I was 'skating' over the concrete floor my sister was presently scrubbing. I skidded and hit my head on the floor. I went blank for two minutes.. Is there a way to prevent these on these 'cement roads' in rainy season??

Ngwakwe: How will the dust oozing out from the road over time be managed considering high temperature and low humidity in our clime?

At a speed of 120km/h the vehicle behind yours may have visibility problem when the road starts degenerating.

emiye:

You are so annoying .

You lead me on, and i was waiting for your "domain expert" opinion, and i did not see any, all i saw was long ranting epistle from you fighting everyone to stop commenting on the thread since they are not "domain experts"

Gosh, i wish i can sla* you from my system.

tomakint: The truth is, Cement-concrete pavement road construction is better than Asphalt because it is cost-effective, long lasting, requires less maintenance and more environmental-friendly! Yes, this is a listening government and I hope this development will add more paved roadways to our over 29,000km of paved roadways in the not-too-far distance!

emiye:

You are so annoying .

You lead me on, and i was waiting for your "domain expert" opinion, and i did not see any, all i saw was long ranting epistle from you fighting everyone to stop commenting on the thread since they are not "domain experts"

Gosh, i wish i can sla* you from my system.

emiye:

You are so annoying .

You lead me on, and i was waiting for your "domain expert" opinion, and i did not see any, all i saw was long ranting epistle from you fighting everyone to stop commenting on the thread since they are not "domain experts"

Gosh, i wish i can sla* you from my system.

manny4life:

Oya, you're relaxed right? Ok we've heard you, this is why you don't see me in topics concerning engineering. We who did not study engineering like to ask dumb questions, but there's nothing wrong in answering either. Ok... Sorry o if anyone pinched your skin, ok PLEASE explain more on the issue to the NL community, we'd love to hear it, half baked or full baked, or even expert and advanced baked, it doesn't matter.

From an engineering and soil aspect. The concrete road is better than the asphalt road.

The concrete road has a life span of 40years unlike the asphalt road whose life span is 10years, so no need for immediate maintenance.

Concrete roads are not pollutants and they help save our ozone layer unlike asphalt, when melting the bitumen, it releases awful smell.

Concrete roads help to save fuel because of its low traction force, unlike asphalt roads, it has high traction/frictional force. So we lose more fuel using asphalt roads dan concrete roads. Moreso, with the high frictional force, it tends to release more carbonmonoxide to the atmosphere, thereby polluting the environment.

Concrete roads are durable during high rainfall, but asphalt roads get weak during high rainfall.

During oil spillage, the asphalt is dissolved by the organic content of the petroleum oil. But cements will not dissolve in it.

The only problem of the concrete road is that it takes time and more money. It also has very low friction during the raining season, more cars on high speed have high tendency of skidding.

We can solve the problem of low friction by making the surface alittle bit rough with some gravels, cement and tar.

alpontif:

I will ignore your attempt at sarcasm, and answer your questions.

Apart from the deleted post, I was composing a reply on a mobile deveice until it went off, so its back to square one.

The topic (Nigeria Begins Use Of Cement For Road Construction Against Asphalt.) is misleading, This is beacuse Cement has always been in use in in Nigeria in the construction of unpaved roads in the country. Cement, beaues of its binding properties has always been used as a stabilzer in these unpaved roads, In Civil Engineering terms, we call such Cement Stabilized Roads.

But I believe the OP meant Rigid pavements( Concrete). That again is misleading because Rigid pavements have always been common in this country, at least as far back as before independence, an example is the access road network within the IITA Ibadan, instances can also be found all over the country.

In terms of merits or demerits, you cannot say in black and white that it is better than asphalt. This is because any Civil engineering solution is based on several factors including the scope of the proposed road, intended life span, geotechnical conditions, topographical conditions, climatic conditions, economy, construction methodology, and sevral other factors.

As an illustration , you will observe that most of the roads in bayelsa, especially the one leading to Rivers state is constructed as a rigid pavement. This, among several other factors may be because of the geotechnical conditions( sedimentary complex, low soil bearing capacities, high ground water level, etc.) , Climatic conditions( wet humid conditions ) and other factors.

The opposite is the case in Northern states. Though you will find Rigid pavements there, flexible pavements far outweigh them.

In other words, it is the project conditions and constraints that determine the best engineering solution between Rigid pavement, Flexible pavement, and Composite pavement. There is no one solution for every condition because Civil engineering aims to balance safety, durability and economy. So if you apply Rigid pavement in a context where flexible pavements will be better, you have just wasted money, and otherwise.

Civil engineering solutions must satisfy Limit State enineering philosophies.

In Highway design or construction, there are basically 3 elements. The horizontal alignment, the vertical alignment, and the pavement design. In pavement design, the Cbr value, Spt, Dcpt, plasticity and liquidity limits plus other intrinsic design factors dictate the pavement thickness and other outputs. the proposed traffic usage in MsA is also an important factor, in other words, it is not smart to just say because rigid pavements is common in western countries, we should also adopt it en masse in Nigeria, that view is myopic. Conditions are different, and that is what determines the design.

The construction is another matter entirely.

jazzydee:

SMH is this the expert/technical opinion that you were holding out on.cant help but LOL. It is true that empty vessels do make the loudest noise.!
As i already suspected you are just a pretender.

alpontif:

Yes I am a pretender, and i made a mistake by answering, it is useless to adorn a pig with diamonds , and i made another mistake of attempting to reason with fools, you can never beat them at their own game. I AM not only an emty vessel , i be colllection of emty vesssels.Hop your ego is boosted now?...

Atouke:

grow up little man and stop throwing tantrums like a 3yr old.