What is water cement ratio # 360.CIVIL ENGINEERING

 What is water cement ratio

It is the ratio of the mass of water to the mass of cement added to concrete. The water cement ratio formula directly affects the strength & durability of the concrete. The typical water-cement ratio varies between 0.40 - 0.60 for different grades of concrete mix. Importance of water cement ratio : The most important thing that determines water cement ratio. The water cement ratio is the ultimate factor for the strength and durability of the concrete when it is cured properly. For instance, if the water cement ratio is 0.40, it means for every 50 Kg of cement(1 Bag) used in the concrete, 20 Liters of water is to be added. Calculate Water Cement Ratio Water cement ratio = Weight of water Weight of cement For example if the water-cement ratio is 0.50 for concrete and cement added is 50 kg (weight of 1 bag of cement). Water required for concrete will be: Water / cement = 0.50 Water / 50kg = 0.50 Water = 0.50 x 50 = 25 liters. Similarly for W/C = 0.40 Water = 0.40 x 50 Water = 20 litres As you see, the water is reduced as we decrease the water-cement ratio. It is a fact that when water is reduced in concrete, the compressive strength of the concrete increases. But there is some limit to the water cement ratio. The minimum water cement ratio is 0.30 - 0.35, beyond this the concrete becomes too stiff and impractical to handle. To test the water cement ratio Here’s how you can test the water cement ratio in concrete to ensure you have the best cement for house construction: A simple and practical way of controlling the water content is by means of a slump test carried out by a contractor, explained below. To conduct this test a Slump Cone of steel: 30cm high, 20cm diameter at the base, 10cm diameter on the top and provided with handles is used. Concrete is filled in the cone in layers of 7.5cm at a time, each layer being tamped 25 times with a metallic tamping rod 16mm in diameter and 60cm long. Just after the slump cone has thus been filled then it is lifted. The extent to which the concrete drops is called the slump. It is measured from the top of the cone to the top of the concrete after the cone has been removed. The usual values of the slump of concrete used for various purposes are given below and depend upon the method of compaction possible in each case. Where there is no obstruction by way of reinforcement etc., in the movement of concrete or where the concrete can be rammed hard in the case the smaller value of slump is required. Mass concrete and road work : 2.5 to 5 cm The lower the water to cement ratio, the fewer air pores and the more compact the concrete structure, which translates into higher strength. If waterproofing is not done properly, then dampness can enter the home which spoils the strength of the home. Through this video let's understand about some mistakes related to waterproofing. For such more tips visit https://bit.ly/3HKAKIf Is construction of a plinth beam necessary while building a home? Check out the steps to make a plinth beam and save your wall from cracks. Plinth beam is an RCC structure placed between the walls and foundation of a home. Plinth beam provides even support to the walls of a home. If the #plinthbeam is not constructed right, there are chances that cracks might appear on the walls. It is mandatory to construct a plinth beam in flood-prone areas. Without it, there is a risk of the weakening and collapsing of the walls. Lets understand the right way to construct a Plinth beam. Normally concrete of minimum M20 grade is used in the construction of a plinth beam. The depth of the beam should be at least 200mm and the upper surface of the beam should be higher than that of the ground. Before pouring concrete, the position of the shuttering should be fixed firmly. The steel rods should be given a covering of 25mm and proper compacting of the concrete should be done. Always remember the proper curing of the beam is also very important. Keep watching #BaatGharKi from UltraTech Cement to know more about home-building. UltraTech is India's No. 1 Cement†About UltraTech: UltraTech Cement Ltd. is the largest manufacturer of grey cement, Ready Mix Concrete (RMC) and white cement in India. It is also one of the leading cement producers globally. UltraTech as a brand embodies 'strength', 'reliability' and 'innovation'. Together, these attributes inspire engineers to stretch the limits of their imagination to create homes, buildings and structures that define the new India