Concrete Lab - Introduction The main aim of the concrete...

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Introduction: The main aim of the concrete lab is to compare the durability of fresh concrete properties along with the determination of the hardened concrete properties that are prepared at different water to cement ratios (specifically at 0.4, 0.55 and 0.7). The experiment will take place in two different sessions. The first session involves the mixing and making of concrete samples and testing them. One of the tests is the slump test: which is performed by finding the “vertical difference between the height of the inverted cone and height of displaced concrete “(Construction Material Lab Manuel). The unit weight test is achieved through taking the unit weight as per direction found on the data sheet. The air content test measures the air content in the sample by reading the position of the gauge needle after damping and air pumping the samples. The moisture content is also determined in this lab for fine and course aggregate samples. The second session involves finding hardened concrete properties through splitting the samples under tensile and compressive strength and relate it to the level of water cement ratio in the sample. The hypothesis of the lab would be the higher water to cement ration (w/c), the lower the
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