the indirect tensile strength (splitting strength) test measures the concretes resistance to being pulled apart, it's carried out on a standard cylinder specimen by applying a tensile force to a concrete cylinde specimen placed on its side.
flexural test measures the ability of a beam or slab...
Each Time I come along such discussion it never fails to surprise me that with all the advancement in the engineering technology today, the world is not yet able to really use one unit system that can be applied everywhere!
I don't really see the point in sticking with prejudice to an out dated...
FisherStruct
You can call :
1. Jordan Engineers Association JEA
http://www.jea.org.jo/
info@jea.org.jo
Tel ++962 6 560 7616
Fax ++962 6 567 6933
2. The royal scientific society
http://www.rss.gov.jo/
rssinfo@rss.gov.jo
Tel: +962 (6) 5344701
Fax: +962 (6)5344806
3. Jordan Institution for...
mweng;
In general:
A "Duranotic Finish" is an anodization process used for coating aluminum the end result is a dark bronze look.
Drop By !!
www.geocities.com/concretesite
Guys
I used to work with several ready mixed concrete suppliers. Take my word for it, don’t trust any data they provide!
What would I like to add to what you guys mentioned is :
Remember that the concrete is mix-designed for average mean strength not the specified (required) strength which...
Luk;
Here are some links that you might find helpful:
1. what is civil engineering?
http://www.rose-hulman.edu/Class/ce/HTML/whatis.html
2. The Top Ten Public Works Projects of the Century
http://www.apwa.net/About/Awards/TopTenCentury/
3. Some of the century's top architects and engineers...
Just to add to what Ron said many factors affect the amount of the unhydrated cement like time, temperature, curing and fineness of cement besides the water content of the mix.
As the temperature increases the hydration of the cement increases and the HYDRATES (the result of the hydration of...
The Use of screening to remove shale or other lightweight aggregate from river sand is normally unsuccessful. It is very difficult to control the raw feed rate, and as a result, it is practically impossible to maintain a uniform, shallow bed depth (the depth of the material passing over...
Here are some references for you :
D. E. Branson, Deformation of cncrete structures (McGraw-Hill international book company)
A. M. Neville, Creep of concrete
A. M. Neville, W. H. Dilger and J. J. Brooks, Creep of plain and structural concrete (construction press, 1981)
Also see.....
ACI...
A quick but unreliable coloration is to consider the compressive strength to be eight times larger than the flexural strength. This ratio depends on the level of strength of the concrete, that is : the higher the compressive strength the lower this ratio becomes. As the tensile strength...
If the concrete was supplied from a batch plant, the thing you should ask for is the "age-strength correlation" not the strength gain curves, as the former will give a better estimate of the predicted strength based on the true 28days strength using different Q/C systems such as the...
charlierock,
Many spec's set a "specimen age correction factor" to predict the 28-days compressive strength from the results obtained at an older or younger age.
The most commonly used factors are :
Age Factor (Multiply By)
--- ------
3 2.5
7 1.5
28...
In addition to the manufactured fiber products that Rjeffery mentioned, carbon and Kevlar (a type of Polymer just like polypropylene) are also used in Fiber reinforced concrete.
Natural fibers are also used such as asbestos, sisal and cellulose... studies showed promising results when shredded...
This might sound funny but if the problem is severe and the netting doesn't help. If the pudget allows, why don't you consider laser dispersal? It’s effective, safe, humane and environment-friendly. Take a look at the following sites...
