effect of water-cement ratio on the strengh …,this paper presents the empirical results of the effect of water-cement-ratio (w/c) on the strength properties of quarry sand concrete (qsc). the investigation reveals the pattern of relationship between w/c and compressive strength. two nominal mix proportions of.impact of water quality on compressive strength of,on 14th day fresh water sample has 17.48n/mm2 as against 12.10n/mm2 and 12.55n/mm2 recorded for saline water sample.the findings revealed that concrete sample cast and cured with fresh water gained appreciable compressive strength over 150 days period while sample cast and cured with saline water (containing 3% to 5% salt) slowly increase in strength but lower when compared with.
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keywords effect of water quality, compressive, split tensile and compressive strength engineering abstract the hardening of cement gives strength and durability to concrete. the quality of mixing water may affect the setting, hardening and strength of the concrete. great control on properties of cement and aggregates
mixing water for concrete production and found that concrete slump and strength reduced drastically. the carbonate sand bicarbonates of potassium and sodium affect setting time of concrete.
the study shows an increase in the compressive strength of concrete for concrete specimens mixed and cured with sea water. compressive strength of the concrete were also affected when the concrete...
effect of miscellaneous inorganic salts in water on properties of concrete the salt content in water adversely affect the strength of the concrete. the major salts that can be present in water are salts of manganese, tin, lead, copper and zinc. the presence of zinc chloride in water results in the retarding of concrete strength gain.
preparation of concrete. impurities in water may interfere the setting of the cement and it may adversely affect the strength properties of concrete. sea water is the water from sea or ocean. strength of concrete depends on the quality of water. have a solution containing a great number of elements in
mixing water for ready-mix concrete. the aim of this study is to determine the compressive strength and drying shrinkage of the mortar. the specimens for compressive strength test were cured under water with different curing duration of 7, 28 and 60 days. for drying shrinkage the specimens were cured on air for 4, 11, 18 and 25
effect of duration of water curing on strength of concrete. there is a significant impact of water curing and time of curing in achieving the strength of the concrete. in addition, curing affects the durability of concrete. the effect of moist curing can be expressed as follows. allowing concrete to dry out immediately achieve only 40% of the strength
impact of water quality on compressive strength of reinforced concrete pran nath dadhich, ravi kumar sharma, sanjay shekhawat, chirag jain, binit gopal, poornima group of institutions, bt-1, sitapura, riico industrial area, jaipur abstract-this study adopt laboratory controlled experimental approach, in order to find out impact of water
the results indicated that sources of water used in mixing concrete have a significant impact on the compressive strength of the resulting concrete. it concluded by suggesting that river water could be used for mixing where tap water is scarce.
the compressive strength decreased by 9–14% for concrete mixes mixed by fresh water and cured in seawater at different curing ages ( table 4). in conclusion, mixing and curing concrete in seawater increases the early compressive strength, but the seawater has a negative effect on the compressive strength of concrete at ages over 28 days.
the quality of the water plays an important role in the preparation of concrete. impurities in water may interface with the setting of the cement and may adversely affect the strength of the concrete. 3. the is: 456 (2000) code stipulates the water quality standards for mixing and curing of concrete. 4. in some
acidic, oily, silty, and seawater should not be used in concrete mix. impurities of water give an adverse effect on the strength of concrete. therefore,potable water is always used in concrete mix.particularly the impure water may lead to corrosion, carbonation or acid
the compressive strength of concrete is shown to be increased by the presence of sodium chloride or ocean salts in the mixing water. the strength was found to increase with increasing salinity even up to 7% by weight of water.
the crushing strength of concrete at temperatures up to 600°c was independent of the water/cement ratio used but was influenced by the aggregate/cement ratio. concrete specimens loaded to produce normal design compressive stress during the period of heating showed less reduction in strength than specimens without imposed load.
how moisture affects concrete strength. increased space between cement grains: higher water-to-cement ratios result in greater spacing between the aggregates in cement, which affects compaction. similarly, increased moisture levels reduce the concrete’s compressive strength and durability.
also, water that is not consumed by the hydration reaction may leave concrete as it hardens, resulting in microscopic pores (bleeding) that will reduce final strength of concrete. a mix with too much water will experience more shrinkage as excess water leaves, resulting in internal cracks and visible fractures (particularly around inside corners), which again will reduce the final strength.
quality of water: quality of water also affects the strength and durability of the concrete structures. in areas where water is very pure and does not contain any sulfate and chloride, opc and ppc are recommended to be used, as the cost of the cement is very reasonable, while in areas where the water is enriched with minerals like sulfate and chloride, then the sulfate and chloride resisting cement will be
water is a key component in concrete. however, too much water can be detrimental to both the fresh and hardened concrete properties, especially strength, long term durability and potential for
the 28-day compressive or flexural strength of concrete mostly depends on the water-cement ratio or water-binder ratio and the 28 days compressive strength of cement. the water-reducing admixtures reduce the water content of concrete and thereby, the compressive strength of concrete can be increased by reducing the water-binder ratio.
experimental investigations of the effect of water quality on compressive strength of concrete developed with dal lake water as a case study. two concrete mixes, 1:1.5:3(m20) and 1:1:2(m25), with water / cement ratio of 0.60 were put under investigation. water samples from four different sites of dal lake and portable water of
optimum level of workability and strength. concrete blocks of standard sizes were prepared and relieved at a standard time period of 7, 14 and 28 days and then the compressive strength was tested. distinctive solid blend extents, for example, opc and spc are set up to the check the compressive quality of pervious concrete.
effect on workability and strengthof concrete due to variation in mixing water temperature renjuraj r, shabana a, salman faris, chinju g mohan, shahana m s, archa m s, sarath s . abstract— this project was aimed at determining the effects of mixing-water temperature on the compressive strength andworkability of concrete.
the factors affecting the strength of concrete are must known to develop the required strength. there are key factors as discussed in the article compressive strength of concrete and testing of concrete that affect the strength of the concrete. they are as follows. quality of the materials such as cement, coarse aggregate, fine aggregate, and water
the concrete was prepared using these aggregates with the water-cement ratio of 0.45, 0.50 and 0.55 respectively. the compressive strength of the concrete in 28 days is 52.8mpa, 46.4.2mpa and 42.6mpa, respectively, higher than that of ordinary concrete.