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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in the area of civic buildings. What distinguishes Roman architecture is its technical advances which allowed the Romans to define space uniquely and impressively only using materials as simple as bricks and concrete. A civilisation known for its efficiency‚ the Romans developed concrete as a building material as it was durable‚ strong and economical‚ and particularly well suited in the construction of large-scale buildings. Such buildings as the Temple of Diana (ca.80 CE) in Nimes used cut-stone
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Benefits Of Choosing Stamped Concrete For Your Patio A plain concrete slab is the typical patio material‚ so if you want something a little more upscale‚ you may start to look at pavers or natural stone. However‚ there’s one option you don’t want to overlook‚ and that’s stamped concrete. It pours on like a concrete slab‚ but it looks just like more expensive stone. Here are some of the benefits of installing a stamped concrete patio. Lower Cost Slate and other stone materials are expensive. They
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Magan Agarwal Binani Cement Limited Key factors 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
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day. Two major innovations were major factors in allowing romans to build these structures. Concrete‚ an invention of Rome‚ allowed them to build long lasting bridges‚ temples and dwellings. (Kamm‚ n.d.). Arches were used to extend the length of structures‚ providing support. With these two methods at their disposal‚ Rome was able to produce some awe inspiring structures. There were two types of concrete that were used in ancient Rome. The first of which was created simply using one part lime and
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Hank Kolb‚ Director of Quality assurance Case Study xxxxxxxxxx February 28‚ 2013 As the newly hired director of quality‚ the first step in identifying the quality issues within the plan t is to understand the basic root cause of the problem. The general manager‚ Morgenthal‚ has already mentioned lack of quality attitude in the plant and the on-going problems within the plant. These are some of the problems and root causes that are plaguing the quality department. Personnel Newly
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in today’s context of a globalized singapore‚ many people are concerned with building up our economy . what many people dont realise is that conserving out environment is just as important to our economy . yes our economic growth is important to sustain our economy ‚ but only to a limited extent . we need to conserve our environment because they are vanishing fast ! is our government doing enough ? or rather ‚ can they do more ? we believe that the government can do more to conserve our environment
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Refractory Concrete Tutorial - Recipe and Instructions Mixing heat resistant mortar without using a concrete mixer Heat resistant refractory concrete There are two ways‚ two types of heat resistant concretes that can be prepared. Cheaper and more expensive - stronger and weaker. The first one is a high heat refractory concrete. This type will survive in real high heat and can be used in hot-face (What is hot face? Hot face is a wall facing the main heat from a source. Internal walls‚ floor and
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ABSTRACT Concrete has been the most preferred construction material for over five decades. It is being increasing day to day all over the world due to its versatility‚ mould ability‚ high compressive strength and many more advantages. For several years beginning in 1983‚ the problem of the durability of the concrete structures was a major topic of interest in Japan. The creation of durable concrete structures requires adequate compaction by skilled workers. One solution for the achievement of durable
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Operation strategy Case study. Hank Kolb‚ Director of Quality Assurance. Q1) the fundamental problem is management in general and senior management lacking the policies and visible support of a quality matters in particular. Even though‚ the appointment of Mr. Kolb is the right choice‚ still there is many other problems affiliated with quality control. The lack of management assurance of quality was evident once a chain of actions was being done wrong. Such actions are: putting schedule and
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