While concrete has been around in one form or another since before Roman times, in this era the cement was usually mixed by hand using a shovel or spade. However in the late 1920 when the automobile industry started to become popular so did the portable cement mixer or concrete mixer as it is more commonly know in the construction industry. A cement mixer is device often used in the construction industry to produce a concrete substance, this is done by adding compound components such as the concrete
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to retain the lawn soil that may be on the ground or raised, but also gives a seaside appearance to the garden. They can be modified or cut on the top portion to give a wavy appearance, and coloured varyingly to create pleasing looks. Brick and concrete block edging Bricks are widely available cheap and choice for landscape edging in many regions. Brick and block edging can be done in several ways. They can be laid as pavers over a bed of sand, pushed together tightly so that no turf can pass
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4 HMA - Marshall Method: The basic concepts of the Marshall mix design method were originally developed by Bruce Marshall of the Mississippi Highway Department around 1939 and then refined by the U.S. Army. Currently, the Marshall method is used in some capacity by about 38 states. The Marshall method seeks to select the asphalt binder content at a desired density that satisfies minimum stability and range of flow values (White, 1985). This section consists of a brief history of the Marshall
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PROJECT REPPORT ON MYK LATICRETE INDIA PVT.LTD. KOLKATA [pic] A Project Report submitted in partial fulfilment of the requirements For the award of the degree of MASTER OF BUSINESS ADMINSTRATION Collaboration program with PRIST University BY SAGAR KUMAR Reg. No- CM 2091860074 Under the guidance of Prof. Jayshree Kotwal [pic] PRIST UNIVERSITY Vallam, Thanjavur 2010 STUDENT’S DECLARATION I declare that the project titled
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of this lab was to design, mix, and test a specimen of concrete based on a specified strength, and the ingredients used in the testing were cement, air, water, sand, and stone. There was a batch of concrete design to reach the maximum of 5000 psi. The concrete mix designed was done from ASTM ACI 211 Chapter 6. To determine the slump and air content ASTM C143 and C231 were used. To calculate the unit weight and making curing concrete test specimens in the laboratory ASTM C138 and C192
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constituted by concrete, pavements, gravel, sand and soil. Recycling and reusing these wastes generates a more efficient and green construction, therefore it is important to find a way to recycle these residues in concrete mixtures without affecting the essential properties of concrete. By performing the compressive test in different concrete mixtures that contained different amounts of recycled aggregates from old concretes (20% and 30%), showed that the resistance of the concretes wasn’t significantly
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NVIRONMENTAL PROTECTION (CONCRETE BATCHING AND CEMENT PRODUCT MANUFACTURING) REGULATIONS 1998 - REG 2 2 . Interpretation In these regulations — agitator means a tank attached to a concrete mixing truck, or other plant, in which the ingredients of concrete are mixed; aggregate means broken stone, brick or gravel which forms one of the ingredients of concrete; cement means argillaceous and calcareous materials used in cement products;
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intuitive understating of the improvement in structural behavior. Reinforced cement concrete was invented with similar ideas, as hardened concrete though having a high compressive strength can resist negligible tensile loads. Mild steel bars with a good bond in the concrete matrix are designed to take all the tensile forces while concrete resisted compression. With this fundamental idea, the use of reinforced concrete became a huge success in the construction industry, which until then was facing the
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construction of all the above structures very commonly used material is reinforced cement concrete (R.C.C.), which is a composite material consisting of concrete and steel. When water is added to an intimate mixture of cement, sand (Fine Aggregate) and jelly (Coarse Aggregate), it forms a plastic mass, popularly known as concrete. This mass can be easily moulded to desired shape and size using formworks. The concrete gradually hardens and achieves the shape and size permanently. Apart from the main ingredients
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ASSAM EARTHQUAKE AND OUR BUILDINGS Md Ali Akbar MOLLICK* Introduction An earthquake of magnitude 8.7 on the Richter Scale (8.1 on the Moment Magnitude Scale) occurred on 12th June 1897 at 5.11pm in the Assam Basin, some 250 kilometers (km) north from Dhaka, 130 km north-west from Sylhet and 70 km north from today's Bangladesh and Indian border. The epicenter was 26o (N) and 91o (E) and focal depth was 32 km. The shaking was felt over an area of 650,000 square-kilometer (sq-km) and destruction
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