As the crystals grow, they are too far apart to knit together and form strong bonds.Concrete with a higher w/c ratio is also more susceptible to cracking and shrinkage.

With an increase of w/c ratio amount of water is increased.Technically as per studies, cement requires 23% of water for the hydration process and 15% for expansion of pores and volume increment. If water is used in more quantity, it may develop more voids and develop honey-combed structure to a large extent in set concrete. DOI: 10.19080/CERJ.2018.04.555636 002 Ciil ngineerin Research ournal content also has adverse effect of the strength of concrete due When water to cement ratio is low in a fresh mix, then less water is available for the hydration of cement.Hence, some amount of cement paste remains un-hydrated that leads to internally tension in concrete plus weak bond. This not only affects the compressive strength, it also affects the tensile and flexural strengths, the porosity, the shrinkage and the color.The strength is reduced mostly because adding more water creates a diluted paste that is weaker. cement ratio for concrete mix according to crushing strength. A w/c ratio of The practical range of the w/c ratio is from about 0.3 to over 0.8.Concrete countertops, sinks, fire features and furniture require vastly higher quality concrete than sidewalks or even foundations, in terms of both performance and aesthetics. At higher water/cement ratio the ‘gel’ formed is in the poor physical structure, create voids during subsequent evaporation and become more porous, resulting in a lower strength of concrete at a later age.If we need to calculate the quantity of water for concrete mix, first find the cement content for the volume and w/c ratio.If we assume 80 kg of cement for concrete mix and w/c ratio is 0.45Required amount of water = Cement volume X w/c ratioTherefore, required water quantity is 80 kg X 0.45= 36 lit.Workability of concrete means the ability of concrete to perform concreting process like W/C ratio varies from 0.4 to 0.6 depending on the exposure condition as per IS 10262 (2009). Three simple ingredients can be blended and proportioned numerous ways to make concrete, and the ratio of the water to the cement is particularly important.In concrete, the single most significant influence on most or all of the properties is the amount of water used in the mix.In concrete mix design, the ratio of the amount of water to the amount of cement used (both by weight) is called the water to cement ratio (w/c). Shrinkage leads to micro-cracks, which are zones of weakness. A w/c ratio of The practical range of the w/c ratio is from about 0.3 to over 0.8.Concrete countertops, sinks, fire features and furniture require vastly higher quality concrete than sidewalks or even foundations, in terms of both performance and aesthetics.

It results in decrease in density, durability and strength. Shrinkage leads to micro-cracks, which are zones of weakness. You can reach her at You can use below filter for finding the nearby professionalsNon-Conventional Curing Methods in Concrete Construction!How to Cure Concrete by Steam Curing at Atmospheric Pressure?Concrete Bonding Agent: Types, Characteristics & Procedure to Apply!Nominal Mix and Design Mix of Concrete: Know the Difference!Plum Concrete: What | Why | Uses | Design Specifications!Rice Husk Ash in Concrete: Uses, Pros & Cons & Its Effect on Properties of Concrete! If w/c ratio increases, the strength of concrete decreases. As the crystals grow, they are too far apart to knit together and form strong bonds.Concrete with a higher w/c ratio is also more susceptible to cracking and shrinkage.

Water to cement ratio is one the largest single factor on which strength of compacted concrete depends. It makes concrete weaker and more susceptible to cracking and shrinkage. Water/cement ratio as per IS 10262 (2009) for the concrete mix varies from 0.4 to 0.6. Once the fresh concrete is placed, excess water is squeezed out of the paste by the weight of the aggregate and the cement paste itself. Most of the answers in this thread address the 'how' and the 'why' of the effect of the water/cement ratio on the workability of concrete. The water/cement ratio was set as the variable between 3 Concrete Mixes (to determine the effect of water/cement ratio on the strength and workability of the concrete). She has Bachelor’s degree (BE) in Civil Engineering from ‘Patel Institute of Technology, Bhopal, Madhya Pradesh.

The water/cement ratio has a direct effect on the following properties with increasing water for a given cement content: ultimate compressive strength and flexural strength reduces Durability reduces permeability increases shrinkage increases workability increases segregation and …