The final scope of this study is to obtain a mathematical model which lead to know the relationship between the corrosion intensity and the ohmic drop of the steel reinforcement with the
water-cement ratio, curing temperature, and the environmental chloride content.
First, the effects of
water-cement ratio, set-retarding dispersant AA, quick-setting agent BB, and expander C in the expandable material with high water content on the viscosity of the slurry were studied separately.
This is very easy to understand because concrete with a higher quality usually has a low
water-cement ratio. With a low-water-cement ratio, the amount of water that evaporates during the hydration process is very small.
In case of low
water-cement ratio concrete, curing with excessive water in early ages is more beneficial than in case of high
water-cement ratio (ACI, 1990).
The use of waterproofing chemicals, in the form of waterproofing admixtures, is used for the reduction in
water-cement ratio, early and delayed forming of concrete, enhanced durability, modification in physical and chemical properties (strength, resistance to corrosion, and weather resistance).
Demonstration paste, mortar and concrete mixtures of 0.40 or higher
water-cement ratio were formulated with limestone powder replacement for a significant portion of their cement paste, achieving the cement reductions upward of 30 percent.
a/c :
water-cement ratio, given by weight (kg [kg.sup.-1]);
The amount of micro cracks depends on the aggregate size and grading, cement content,
water-cement ratio, degree of consolidation of fresh concrete, curing conditions, environmental humidity, and thermal history of concrete (Kumar Metha, Monteiro 2014).
To determine the water demand of sand initially set
water-cement ratio of cement paste, in which it shows on the shaker table slump flow of 170 mm, which corresponds approximately to its normal density.
Details of soil-grout mixtures are presented in Table 2 including mixing ratio,
water-cement ratio, unit weight of the specimens, and number of specimens.