mixing concrete with sea water

Sea Water for Mixing Concrete The Construction Civil

Sea Water for Mixing Concrete. It is advisable, as stated above, to use clean water fit for drinking purposes for making cement concrete.However, at places where sea water is available in abundance and potable water is costly, the sea water can be used for making cement concrete. The problem of using sea water for mixing concrete has to be studied from the following two aspects:

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POSSIBILITY OF SEA WATER AS MIXING WATER IN CONCRETE

use sea water as mixing water, considering the kind of cement. Table 1 Chemical compositions of sea water as mixing water Density (20 °C) pH (20 °C) Chemical compositions (mg/l) Na K Ca Mg Cl SO 4 CO 3 1.024 8.03 10125 387 376 1180 17136 2412 65 Table 2 Mix proportions of concrete Cement type Mixing water G.max (mm) Slump (cm) Air (%)

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Sea Water in Concrete Mix Concrete Construction Magazine

Apr 01, 1976  There appears to be no danger of corrosion of steel, however, if the concrete mixed with sea water is continuously immersed in sea water. There is also the possibility of sulfate attack and consequent deterioration by the use of sea water if the cement used has a

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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

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CAN SEA WATER BE USED FOR MAKING CONCRETE? - CivilBlog.Org

Jun 28, 2014  If the collapsed condo contractor used either sea water and or beach sand to build the units, the corrosive aspect will be the end effect we witnessed on June 24, 2021 @ The Surfside condo. The corrosive effect of salts in sea water are very damaging to the steel reinforcing rods in the concrete mix.

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

we can see sea water playing a significant role in roman concrete which are seen to be standing for centuries unlike modern structure .They used volcanic ash ,rock and lime and they were used to build structures like harbors which can come into co...

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Concrete Exposed to Seawater – Effects and Preventions ...

Feb 27, 2014  So, large number of concrete structures effected by concrete either with direct contact or indirectly by the winds carrying seawater sprays. Fig 1: Bridge constructed on sea side. Generally seawater contains 3.5 per cent of soluble slats by weight. The ionic concentration of Na+ and Cl- are maximum in seawater, normally 11,000 and 20,000 mg/lit ...

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Designing concrete for exposure to seawater

d e t e ri o r ates concrete and care f u l l y selecting a mix design can help en-s u r e the maximum service life of the concrete structure. Marine environment Most seawaters are similar in composition, containing about 3.5% soluble salts (chlorides and sulfates) by weight. The pH of sea-water va r ies from 7.5 to 8.4, ave ra g-

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How to pour concrete in water - YouTube

Jun 30, 2016  This video shows you how to pour concrete in water. You may like my other videos. Just type Lsailor1 in the YouTube search bar. Like them? Subscribe for the ...

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Mixing Water for Concrete - Portland Cement Association

When considering water quality in concrete production, it is important to account for all sources of water in the mixture. By far, the greatest volume of mixing water in concrete is from batch water which may be from either a municipal water supply, a municipal reclaimed water. supply, site-sourced water, or water from concrete production ...

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(PDF) 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. Jack Jiang. Download PDF. Download Full PDF Package. This paper. A short summary of this paper. 31 Full PDFs related to this paper. READ PAPER.

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

we can see sea water playing a significant role in roman concrete which are seen to be standing for centuries unlike modern structure .They used volcanic ash ,rock and lime and they were used to build structures like harbors which can come into co...

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Suitability of sea water on curing and compressive ...

Mixing or curing of concrete with sea water is not recommended. Under unavoidable circumstances, it may be used for plain concrete or concrete structures which are permanently submerged. IS: 456-1978 SW (Mixing) Mixing water shall be potable and free from salts. Gives no

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Some Considerations for Applicability of Seawater as ...

To save drinking water, use of seawater in the concrete industry seems imperative. In the present study, the possibilities of seawater as a material of concrete are discussed as a result of the literature-based and experimental investigations.

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Chapter 3: Mixing Water for Concrete

Sea Water • Seawater containing up to 35,000 ppm of dissolved salts is generally suitable as mixing water for plain concrete • Seawater is not suitable for use in making steel reinforced concrete and prestressed concrete due to high risk of steel corrosion Acid Waters • Acid waters may be accepted as mixing water on the basis of their

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How can sea water be used for making concrete? - Quora

As per IS 456:2000 Article(5.4.3) * Due to presence of harmful salts in sea water,it cannot be used for mixing curing of concrete. * If atmost unavoidable circumstances arises where sea water cannot be neglected,then it can be used for mixing ...

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Effects of mixing water salinity on the properties of concrete

Oct 20, 2020  Existing studies on SSC or seawater concrete have been largely limited to the use of mixing water with a salinity level close to the world-average ocean salinity. Against this background, the present paper reports the first ever systematic study on the effect of salinity of mixing water on the properties of concrete.

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Salt Water Concrete—A Reality Monolithic Dome Institute

Feb 24, 2014  It is just a matter of gathering up the beach sand, using the salt water to mix the Portland Cement and constructing the Ecoshell I. One consideration during the construction process is the fact that salt water tends to speed up the setting of the concrete. However, adding 20 percent fly ash will slow the setting and help make the concrete even ...

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EFFECTS OF SALT WATER ON CONCRETE - Project Topics

The aim of the experiment is to prove whether or not, if the sea water can reduce the strength of concrete. 1.4 SCOPE AND LIMITATION OF STUDY . A popular yard-stick to the suitability of water for mixing concrete is that, if water is fit for drinking, it is fit for making concrete. This does not appear to be a true statement for all conditions.

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Mixing Water for Concrete - Portland Cement Association

When considering water quality in concrete production, it is important to account for all sources of water in the mixture. By far, the greatest volume of mixing water in concrete is from batch water which may be from either a municipal water supply, a municipal reclaimed water. supply, site-sourced water, or water from concrete production ...

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

Concrete cylinder specimens with water-binder ratio of 0.5 were prepared using natural seawater or tap water as mixing water. At 24 hours after casting, specimen was demolded and followed by different curing conditions, such as tap water curing, seawater curing and air curing in 20 C, RH 60% controlled room for 28 days.

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Concrete Mixing Ratios - How To Make Concrete (Cement ...

3000 psi concrete mix ratio. To produce a 3000 psi cubic yard of concrete (27 cubic feet) the concrete mixture ratio is: 517 pounds of cement or (234kg) 1560 pounds of sand or (707kg) 1600 pounds of stone or (725kg) 32 - 34 gallons of water or (132L) This mixing ratio will give you a concrete mix that is strong, durable, and good for most ...

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Experimental Investigation on Suitability of Sea Water for ...

Aug 29, 2020  The concrete mix was cast using fresh water and sea water and tested after 7 and 28 days of curing for determining the mechanical properties of concrete. Findings of the test results show enhanced mechanical properties of concrete using sea water when compared to that of concrete using fresh water.

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EFFECT OF SEA WATER AND STRENGTH OF CONCRETE

water up to 180 days. (1N sea water means normal sea water made by mixing tap water with exact amount and proportion of principal salts found in natural sea water.) . They concluded that concrete specimen made cured with sea water exhibits compressive strength loss of about 10% compared to plain water mixed and cured concrete. Also,

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Suitability of sea water for mixing structural concrete ...

Jan 01, 1995  As part of a durability study, this paper describes the mixing and curing effect of sea water on setting time, compressive strength of cement-sand mortar and corresponding concrete, rebar corrosion, chloride content and variation of alkalinity over a period of 18 months in a laboratory simulated splash/tidal zone of marine environment.

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Fresh and hardened properties of seawater-mixed concrete ...

Nov 30, 2018  Ready-mix concrete with a 28-day 60-MPa design compressive strength was used to cast the specimens. In accordance with BS EN 206 , the mixture proportions for concrete per cubic meter were 756 kg of sand, 1144 kg of gravel, 158 kg of ordinary Portland cement, 292 kg of blast furnace slag, and 164 kg of water; with a water-to-cementitious material (w/cm) ratio of 0.34.

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A Review on Strength of Concrete in Seawater

water concrete cubes. P. Krishnam Raju et al (2014) studied the effect of seawater on compressive and flexural strength of ordinary Portland cement (OPC) of 53 grade. The mixes were prepared with “Potable water mixing Sea water curing”, and “sea water mixing sea water curing”. They casted a

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Salt Water Concrete—A Reality Monolithic Dome Institute

Feb 24, 2014  It is just a matter of gathering up the beach sand, using the salt water to mix the Portland Cement and constructing the Ecoshell I. One consideration during the construction process is the fact that salt water tends to speed up the setting of the concrete. However, adding 20 percent fly ash will slow the setting and help make the concrete even ...

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Roman Seawater Concrete Holds the Secret to Cutting Carbon ...

Jun 04, 2013  The chemical secrets of a concrete Roman breakwater that has spent the last 2,000 years submerged in the Mediterranean Sea have been uncovered by an international team of researchers led by Paulo Monteiro of the U.S. Department of Energy’s Lawrence Berkeley National Laboratory (Berkeley Lab), a professor of civil and environmental engineering at the University of California,

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The effects of seawater on the hydration, microstructure ...

Mar 04, 2019  The case study undertaken by Etxeberria et al. has shown that seawater can be successfully incorporated as a mixing water to produce concrete dyke blocks, while, Chen et al. have demonstrated the use of seawater in producing fibre-reinforced polymer-confined concrete, as an alternative solution to producing steel-free structures, without the ...

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Quality of Water for Making Concrete: A Review of Literature

AS 1379[7]recommended that, mixing water shall be drawn from a source of acceptable quality. Acceptable quality of water is, water from ready mix concrete plant in washout operations, may be used as mixing water if it is stored such as to prevent contamination by deleterious matters to concrete and the water drawn from the storage outlet.

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What is Soft Water Doing to Concrete? by Intelligent ...

Oct 31, 2018  When Portland cement-based concrete is in contact with soft water, the calcium hydroxide (portlandite, Ca(OH)2) in the hardened cement matrix is leached out as the water tries to establish an ion ...

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How to Mix Concrete Without a Mixer by Hand in a Bucket or ...

Aug 09, 2020  Step 2: Pour in Water. Once your bucket or wheelbarrow has been placed in a steady location, you should pour in the required amount of water. This differs from other methods of manually mixing concrete. However, the result is much more reliable as doing prevents dry concrete from sticking to the bottom of your bucket or wheelbarrow.

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How to Mix Concrete in a Mixer HowToSpecialist - How to ...

How to Mix Concrete in a Mixer. Start by pouring half a bucket of water (aprox. 5l) into the concrete mixer. You will determine the right amount of water with time, because the concrete should have the right consistency. If there is too much water the concrete will be too thin and thus unmanageable.

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Concrete Mixing Ratios - How To Make Concrete (Cement ...

3000 psi concrete mix ratio. To produce a 3000 psi cubic yard of concrete (27 cubic feet) the concrete mixture ratio is: 517 pounds of cement or (234kg) 1560 pounds of sand or (707kg) 1600 pounds of stone or (725kg) 32 - 34 gallons of water or (132L) This mixing ratio will give you a concrete mix that is strong, durable, and good for most ...

get price

EFFECTS OF SALT WATER ON CONCRETE - Project Topics

The aim of the experiment is to prove whether or not, if the sea water can reduce the strength of concrete. 1.4 SCOPE AND LIMITATION OF STUDY . A popular yard-stick to the suitability of water for mixing concrete is that, if water is fit for drinking, it is fit for making concrete. This does not appear to be a true statement for all conditions.

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Miami dock taps salt water in new concrete mix Miami Herald

Nov 18, 2019  Only 2.5 percent of Earth’s water is freshwater, and mixing concrete demands a significant amount of this scarce resource — one ... Sea-water concrete could help limit water

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Water in concrete - SlideShare

Aug 19, 2011  2. Requirements of water used in concreteRole of Water in Cement Concrete5Water used for mixing and curing shall be clean and free from injurious amounts of Oils, Acids, Alkalis, Salts, Sugar, Organic materialsPotable water is generally considered satisfactory for mixing concreteMixing and curing with sea water ...

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