Alliance Concrete Executive Summary The economy in which the read-mix industry operates may have a potential slowdown. Despite Alliance’s success and potential growth‚ the company is facing with a difficult decision to choose between renegotiating debt obligations‚ postponing long overdue capital improvement‚ or reducing the dividend payment to National. Being a ready-mix concrete company‚ Alliance’s obligation is to have their product deliver to the customers on time. However‚ the main issue
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PRESTRESSED CONCRETE The development of early cracks in reinforced concrete due to incompatibility in the strains of steel & concrete was perhaps the starting point in the development of new material like “Prestressed Concrete”. Prestressed Concrete is a method for overcoming concrete’s natural weakness in tension. INTRODUCTION Prestressed Concrete is basically concrete in which internal stresses of suitable magnitude & distribution are
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7166M01.qxd_lb 6/3/09 09:38 AM Page 1 1 BASIC CONCEPTS 1.1 INTRODUCTION Concrete is strong in compression‚ but weak in tension: its tensile strength varies from 8 to 14 percent of its compressive strength. Due to such a low tensile capacity‚ flexural cracks develop at early stages of loading. In order to reduce or prevent such cracks from developing‚ a concentric or eccentric force is imposed in the longitudinal direction of the structural element. This force prevents the cracks
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past on these test is in th e following two points: 1. Difficulties in molding (Getting good specimens). 2. Large variability of test results. It is important that the resul tant mixture (Cement + sand + water) has the same properties as concrete. So the standard sand was chosen and the following properties were determined to it: 1. Consist of pure siliceous material. 2. The particles are nearly spherical shaped. 3. The size of its particles is smaller than 0.85mm (Pass through 15
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High Volume Fly Ash Concrete(HVFC) INTRODUCTION Concrete is the most commonly used construction material; its usage by the communities across the globe is second only to water. Customarily‚ concrete is produced by using the Ordinary Portland Cement (OPC) as the binder. The usage of OPC is on the increase to meet infrastructure developments. The world-wide demand for OPC would increase further in the future. It is well-known that cement production depletes significant amount of natural resources
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RMC or Ready mixed concrete or concrete is manufactured at a batching plant or factory. The mixed concrete is made to a set recipe‚ and then delivered to the desired workplace/worksite by the help of transit mixers. This results in ready mixed concretes which have a precise mixture‚ and this helps achieve specialty concretes to be developed and used on the construction sites. HZS150 Batching Plant Today‚ RMC plants are playing a very important role in building road and civil structures. These RMC
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that control the compatibility between Naphthalene-based super plasticizers and ordinary Portland cements Synopsis: Super plasticizers improve the workability of concrete at low water cement ratio but this workability is sometimes lost rapidly in the first hour after contact between the cement and water. This is especially the case for naphthalene-based and melamine-based superplasticizers when used with the so called incompatible cements. It is possible to reasonably predict the rheological behavior
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Literary Essay The song “Concrete Angel” is written by Stephanie Kay Bentley and Rob Crosby. The song was sung by Martina McBride and published in 2002. This song is about a young girl in a world of abuse and handles getting past it every day. The little girl is described as from a place of depression‚ violence‚ and loneliness. The lyrics and their positioning‚ along with the many metaphors‚ similes and repetitions used‚ explain the deeper meaning of this song “Concrete angel”. In the first section
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development and production of construction machinery for nearly 30 years. Our main products are as follows:concrete pumps‚diesel concrete mixer‚We will provide you with the best product and service. 8. Human-based intelligent control facilitates the operation greatly. 7. With its virtue of precise computation‚ it can meet the requirement of every high performance concrete. 6. PC+PLC control system ensures the high reliability. 5. Lubrication system adopts advanced centralized oil lubricating system
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SELF-COMPACTING CONCRETE Masahiro OUCHI 1 SUMMARY Self-compacting concrete was first developed 1988 in order to achieve durable concrete structures. Since then‚ various investigations have been carried out and the concrete has been used in practical structures in Japan‚ mainly by large construction companies. Investigations for establishing a rational mix-design method and self-compactability testing methods have been carried out to make the concrete the standard one. Keywords: self-compacting
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