Mostafa A. M. Abdeen & Hossam Hodhod,, Analytic Formulae for concrete Mix Design based on Experimental Data Base and Predicting the Concrete Behavior Using ANN Technique, International Journal of Engineering, (IJE), Volume (4): Issue (5)...
mathematical relationships of w/b ratio,cemented material composition[(1-φ)ρ_c+φρ_f],unit water consumption and concrete strength(f_(cu)),then design for the mix proportion of HPC concrete results in chloride ion resistance,resistance to sulfate,frost resistance and anti-carbonization ...
Therefore flexural strength is more often specified than compressive strength in the design of concrete mixes for pavement construction. A simple method of concrete mix design based on flexural strength for normal weight concrete mixes is described in the paper. Usual criterion for the strength of ...
Density is an important property of concrete that determines its mass per unit volume. the density of concrete can vary depending on the composition of its constituents and the specific mix design. Understanding the density properties of concrete is essential for various aspects, including structural ...
Once themix designrequirements have been established by the responsible authority, it is the responsibility of the contractor/producer and his technician to develop the mix within the framework of thespecifications. It is then the moment to test the asphalt concrete in the laboratory where the data...
. Two approaches, or a combination of both, can be taken to control the temperature during the dormant and strength-gain phases of the hydration process. One approach is to control the surrounding elements or mix constituents’ temperature. The second approach is to optimize the mix design....
Concrete materials and mix ratio Ordinary Portland cement grades 32.5 and 42.5 were used to make concrete specimens, and the resulting specimens were documented as PO32.5 and PO42.5. The fine aggregate is quartz river sand, which has a density of 2.7 g/cm3 and a fineness modulus of 2.8. The...
Mix design and preparation of test specimens On the other side, the mix design and preparation depended on the ACI Committee was used to compute the quantities of materials required for the test batch. Many trials mixes were made to adjust the proportions of the used materials to give the 250...
The key element of successful application is to design well the type of MEA and the mix proportions of MgO concrete and precisely control the expansion to match the shrinkage of concrete. Thus for dam concrete, the temperature rise, thermal stress and the shrinkage of concrete in different ...
Machine learning methods, due to their ability to identify patterns or judgment rules hidden in extensive data sets and construct models with the aid of manual experience adjustment, are a new path for overcoming the limitations of empirical regression models in traditional mix design and predicting ...