effect of seawater for mixing and curing of structural concrete

Effect Of Seawater For Mixing And Curing Of Structural Concrete

cement for seawater exposure| concrete construction magazine,the mixture was designed for high strength and low permeability. of primary importance is the water-cement ratio and the amount of cover over the reinforcing steel. the water-cement ratio should not exceed 0.45 if type i cement is used and the concrete cover should be a minimum of 2 inches and preferably 3 inches..influence of the concentration of seawater on the early,made of portland cement [26,27], and studies on the seawater-mixed csa cement are still lacking. seawater mainly contains chloride and sulfate ions, which influence the chemical reaction in the hydration process and produce unfavorable hydration products, limiting its application in concrete engineering [28]. though it has already been recognized that seawater can influence the mechanical.

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  • TECHNICAL PAPER Effect of seawater for mixing and curing on

    TECHNICAL PAPER Effect Of Seawater For Mixing And Curing On

    damaging effect of seawater on concrete structures arises from the action of chlorides on the steel reinforcement and the build up of salts (aburawi and swamy 2008). a number of studies have shown the effects of the mixing and curing of seawater on the compressive strength of cement–sand mortars and corresponding concrete.

  • Concrete Exposed to Seawater – Effects and Preventions

    Concrete Exposed To Seawater – Effects And Preventions

    effect of seawater on concrete structures the constituents of seawater reacts chemically with constituents of cement concrete which results damage to the concrete structure in several ways. the magnesium sulfate present in seawater reacts with calcium hydroxide of cement and forms calcium sulfate as well as magnesium hydroxide precipitation.

  • [PDF] Effects of Seawater Mixing and Curing on Strength

    [PDF] Effects Of Seawater Mixing And Curing On Strength

    in this study, effects of seawater mixing and seawater curing on compressive strength, porosity, and carbonation depth of concrete with 20% fly ash replacement were investigated. concrete cylinder specimens with water-binder ratio of 0.5 were prepared using natural seawater or

  • Effect of mix proportions, seawater curing medium and

    Effect Of Mix Proportions, Seawater Curing Medium And

    the effect of seawater and potable water media is shown in fig. 13. it appears at the initial time that all concrete mixes cured in potable water medium have current intensity greater than that of concrete mixes cured in seawater medium. the current intensity for concrete mixes cured in seawater up to 20 h is almost negligible

  • Influence of Seawater in Strengths of Concrete Mix Design

    Influence Of Seawater In Strengths Of Concrete Mix Design

    in this paper, the effect of seawater on concrete mix was studied. seawater was fetched from the red sea near port sudan. forty eight concrete cubes were prepared using constant water/cement ratio. the first two groups were both mixed with fresh water then cured in fresh water and seawater, respectively. the third and fourth groups were both mixed

  • EFFECT OF SEA WATER ON THE COMPRESSION STRENGTH OF

    EFFECT OF SEA WATER ON THE COMPRESSION STRENGTH OF

    the main aim of this research is to find the effect of seawater curing of strength and durability of different concrete structures. chloride concentration is initially higher in seawater. to design a concrete, which can withstand the attack of sea water, a coal combustion byproduct bottom ash, a fly-ash was used in this study to determine the strength and durability of the concrete against seawater effect.

  • Effect of Seawater on Concrete Structures - Quora

    Effect Of Seawater On Concrete Structures - Quora

    effect of seawater on concrete structures. the constituents of seawater reacts chemically with constituents of cement concrete which results damage to the concrete structure in several ways. the magnesium sulfate present in seawater reacts with calcium hydroxide of cement and forms calcium sulfate as well as magnesium hydroxide precipitation.

  • Possibility of Sea Water as Mixing Water in Concrete

    Possibility Of Sea Water As Mixing Water In Concrete

    possibility of sea water as mixing water in concrete 1274 as mixing water, tap water and sea water were used. the chemical components of sea water are shown in table 1. river gravel was used for coarse aggregates, and the maximum size was 25 mm. also, river sand was used as fine aggregate. the used steel bars were 9 mm diameter round bars

  • 6 Factors Affecting Curing Time of Concrete - Structural Guide

    6 Factors Affecting Curing Time Of Concrete - Structural Guide

    water applied to the concrete could have harmful chemicals such as chlorides. therefore, due attention shall be made on the quality of the water. due to the unawareness, some workers used seawater for curing which result is in durability problems. compressive strength could be

  • Effect of Seawater as Mixing Water on the Mechanical

    Effect Of Seawater As Mixing Water On The Mechanical

    the results showed that seawater can be used as mixing water and curing water. although the setting time of cement become longer by using seawater, however, it did not significantly affect the mechanical properties of mortar and concrete. in addition, strength of mortar and concrete increase when using seawater as mixing water.

  • EFFECT OF SEA WATER AND STRENGTH OF CONCRETE

    EFFECT OF SEA WATER AND STRENGTH OF CONCRETE

    facing the challenge of shortage of fresh water for mixing and curing. the quality of water places an important role in the setting and strength development of concrete structures. the investigation aimed to use sea water in thondi region both for mixing and curing of concrete as the potable water is a scarce commodity on the planet.

  • A Comprehensive Review on Effects of Seawater on

    A Comprehensive Review On Effects Of Seawater On

    it was noticed that the natural seawater has both positive and negative implications on concrete. thus, resistance of concrete against the seawater can be improved by adding supplementary cementitious materials (scm) like copper slag, coal bottom

  • Influence of Seawater Curing in Standard and High-Strength

    Influence Of Seawater Curing In Standard And High-Strength

    a research program has been developed to determine the effect of seawater curing on reinforced concrete properties. different tests (density, compressive strength, porosity, absorption, capillarity and chloride penetration rate) have been carried out on different quality concretes, cured with tap water or seawater.

  • Influence of seawater mixing and curing on strength

    Influence Of Seawater Mixing And Curing On Strength

    the influence of seawater mixing, ggbs and curing conditions such as tap water curing (tc), seawater curing (sc) and air curing (ac) on the strength and porosity of concrete were evaluated. based on investigation result, it was shown that there is no significant influence of seawater mixing in improving strength of ggbs concrete up to 365 days in tc and sc.

  • The Effect of Sea Water on Compressive Strength of Concrete

    The Effect Of Sea Water On Compressive Strength Of Concrete

    sf - concrete cast with salt water and cured with fresh water ss – concrete cast and cured with seawater. testing compressive strength : the compressive strength test was performed on the concrete cubes, tested at the curing age of 7, 14, 21, 28 and 90days using the compression testing machine. the cube was placed between

  • Effect of Seawater as Mixing Water on the Mechanical

    Effect Of Seawater As Mixing Water On The Mechanical

    and material saving the results showed that seawater can be used as mixing water and curing water. although the setting time of cement become longer by using seawater, however, it did not significantly affect the mechanical properties of mortar and concrete. in addition, strength of mortar and concrete increase when using seawater as mixing water.

  • Effects of Seawater on Concrete

    Effects Of Seawater On Concrete

    most concrete structures exposed to seawater are pa,rtially or wholly situated so the secolld important effect on concrete related to wetting and drying is the volume change relations due to changes in, or changes in uniformity of, moisture content. these phenomena,

  • What happens if sea water is mixed with cement? - Quora

    What Happens If Sea Water Is Mixed With Cement? - Quora

    it is reported that the use of sea water for mixing concrete does not appreciably reduce the strength of concrete although it may lead to corrosion of reinforcement in concrete in certain cases. sea water slightly accelerates the early strength of concrete but it reduces the

  • Influence of Seawater Curing in Standard and High-Strength

    Influence Of Seawater Curing In Standard And High-Strength

    the construction of some maritime structures (e.g., reinforced concrete caissons) is cheaper and easier when made on floating docks. in this case, concrete is submerged just hours after casting, is...

  • Effects of natural seawater and sea sand on the

    Effects Of Natural Seawater And Sea Sand On The

    wegian, fm (2010) effect of seawater for mixing and curing on structural concrete. the ies journal part a: civil & structural engineering 3(4): 235 – 243 . google scholar | crossref

  • Salt water and corrosion of reinforced concrete

    Salt Water And Corrosion Of Reinforced Concrete

    concrete can deteriorate for a variety of reasons, and concrete damage is often the result of a combination of factors. chloride induced corrosion to reinforcement and other embedded metals is the leading cause of deterioration in concrete. when steel corrodes, the resulting rust occupies a greater volume than the steel.

  • Effects of Seawater on Setting Time and Compressive

    Effects Of Seawater On Setting Time And Compressive

    incorporating seawater in concrete mixture can help in the expected problem of scarcity of fresh water. also, in many cases seawater may be the only available water especially in coastal regions. many reports mention various possibilities of using seawater in concrete without detrimental effect on concrete

  • Influence of seawater mixing and curing on strength

    Influence Of Seawater Mixing And Curing On Strength

    generally, in the concrete industry, several billion tons of fresh water are annually used for mixing water, curing water and cleaning water. nevertheless, the utilization of seawater in the concrete industry is prohibited, because it increases the risk of corrosion of steel bars in concrete.

  • POSSIBILITY OF SEA WATER AS MIXING WATER IN CONCRETE

    POSSIBILITY OF SEA WATER AS MIXING WATER IN CONCRETE

    according to the standard specification for concrete structures (jsce ), critical chloride ion concentration of carbon steel bars is 1.2kg/m 3 [2]. chloride ion content in sea water mixing concrete is calculated to be 2.74kg/m 3, therefore carbon steel bars can not be used. corrosion-resistant steel bars will be used there.

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