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  • Effect of Water Impurities on Concrete Strength

    28/04/2017· If the mixing water contains suspended particles in an amount up to 0.02 percent by weight of total water used in concrete, it will not affect the concrete properties. It is found that high content of suspended particles does not affect the

  • Muddy Waters National Precast Concrete Association

    19/11/2012· • Water demand increases due to the fineness of the hydrating cement particles. • Initial set time increases due to the increase in the amount of hydrated cement and calcium hydroxide. • Compressive strengths are similar to mixes made with potable water. • Concrete durability is similar to mixes made with potable water.

  • Water in Concrete For Construction Pros

    23/04/2014· Adding more water to the concrete increases workability but more water also increases the potential for segregation (settling of coarse aggregate particles), increased bleeding, drying shrinkage

  • Environmental impact of concrete Wikipedia

    A study that appeared in Nature Sustainability in 2018 predicts that concrete production will in the future increase pressure on water resources in regions susceptible to drought conditions: "In 2050, 75% of the water demand for concrete production will likely occur in regions that are expected to experience water

  • Water: An Ingredient for Production of Concrete Concrete

    Thus water to be used for concrete production should not contain substances which may have appreciable harmful effect on the initial setting time, strength, and durability of the concrete. Substances like oils, acids, carbonates and bi-carbonates, alkalis, sugar, silt and organic materials have been found to have harmful effect on the properties of the fresh and hardened concrete.

  • EFFECT OF SALT WATER IN THE PRODUCTION OF CONCRETE

    EFFECT OF SALT WATER IN THE PRODUCTION OF CONCRETE E.M. Mbadike a, A.U. Elinwa b aCivil Engineering Department, Michael Okpara University of Agriculture, Umudike, Umuahia, Abia State. (Email: elvis [email protected] )bCivil Engineering Department, Abubakar Tafawa Balewa University, Bauchi, Nigeria. Abstract In this research work, the effect of salt water in the production of concrete

  • (PDF) EFFECT OF WATER CONTENT ON WORKABILITY OF

    also results in bleeding. another effect of increased water content can also be that cement slurry will escape through joints of formwork. So one of the method of increasing workability is using

  • Effect of Water to Cement Ratio on Concrete

    Concrete Production, concrete is a mixture that is made up of three components, cement, water and aggregate. The water and cement are mixed together to produce a thick paste, to which then measured out aggregates are added to. The aggregates that are added are mainly composed of usual materials such as sand, gravel and crushed rocks, however due to the latest advanced technology; it has been

  • EFFECT OF SALT WATER IN THE PRODUCTION OF

    In this research work, the effect of salt water in the production of concrete was investigated. A total of ninety (90) concrete cubes were cast for compression strength test i.e. forty five cubes were cast using fresh water and the other forty five cubes were also cast using salt water. Similarly, a total of ninety (90) concrete beams were cast for flexural strength test i.e. forty five beams

  • Effects of moisture variation on concrete mixes and

    This means that by reducing the number of spread of the variation in their concrete strength tests, concrete producers can reduce the design strength of their concrete mixes for the same specified concrete. This means that less cement is used in the mix design of the concrete and so the costs are less. As moisture is the biggest variable in the mix design, controlling

  • Environmental impact of concrete Wikipedia

    A study that appeared in Nature Sustainability in 2018 predicts that concrete production will in the future increase pressure on water resources in regions susceptible to drought conditions: "In 2050, 75% of the water demand for concrete production will likely occur in

  • Effects of Excess Water in Concrete Mix The Constructor

    The presence of excessive water in a concrete mix although may facilitate the easy placement of concrete but it also lowers the quality of the overall product. The damage to concrete structures due to excessive water in a concrete mix is very common and the repercussions due to this are briefly explained in this article.

  • Mud-concrete block (MCB): mix design & durability

    01/06/2018· The considerable high-water amount is used for the hydration of cement and keep the flow of this material. This excessive water amount is enhancing its self-compacting quality, which is capable of self-consolidation, having the ability of passing, filling and being stable without the need of any external forces. Experimental test findings determined the mix proportions of Mud-Concrete block as 4%

  • Quality of Water for Making Concrete: A Review of Literature

    ASTM C94 permits the use of non-potable water or water from concrete production operation in ready mix concrete plant, the limits qualified to meet the requirements and optional limits summarized in code. The levels of impurities permitted in the wash water should be below the maximum concentration criteria provided in standard. EN 1008[10]recommended the requirements for water, suitable for

  • Importance of Water-Cement Ratio in Concrete

    14/11/2018· Higher the water-cement ratio means the higher quantity of water which results in dilution in cement paste. It makes poor concrete mix and increases water permeability. Thus, leads to leakage and dampness. It makes concrete weaker and more susceptible to cracking and shrinkage. Shrinkage produces micro cracks, and it is a zone of weakness. Also Read:

  • Effect of Water to Cement Ratio on Concrete

    Concrete Production, concrete is a mixture that is made up of three components, cement, water and aggregate. The water and cement are mixed together to produce a thick paste, to which then measured out aggregates are added to. The aggregates that are added are mainly composed of usual materials such as sand, gravel and crushed rocks, however due to the latest advanced technology; it has been

  • EFFECT OF SALT WATER IN THE PRODUCTION OF

    The result of the average compressive strength of concrete obtained using fresh water of mix ratio (1:1.51:4.01), water cement ratio (0.47) ranges from 27.35-42.34N/mm2 while that of salt water ranges from 25.24-38.81N/mm2 for the hydration period of 7,21,28,60 and 90 days. The flexural strength of concrete obtained using fresh water of the same mix ratio and water cement ratio ranges from 6.60 11.20N/mm2 for 7,21,28,60 and 90 days hydration period while that of salt water

  • EFFECT OF SALT WATER IN THE PRODUCTION OF

    In this research work, the effect of salt water in the production of concrete was investigated. A total of ninety (90) concrete cubes were cast for compression strength test i.e. forty five cubes were cast using fresh water and the other forty five cubes were also cast using salt water.

  • (PDF) Effect of Treated Waste Water on Strength of

    This study deals with the effect of different type of treated waste water on properties of strength of concrete such as compressive strength, tensile strength and flexural strength with respect to