This website uses cookies to ensure you have the best experience. Learn more

Development Of Pre Dried And Blended Lime Mortars For The Ready Mix Market

2747 words - 11 pages

IntroductionMortar is a mixture of sand, a binder such as cement, and water. This mixture is used in masonry construction to fill the gaps between the bricks and blocks used in construction. It is applied as a paste during construction, and then later sets hard, holding the blocks, or bricks together firmly. It can also be used to fix parts of a construction where its original mortar may have been washed away. Currently, mortar can be either mixed on site, or factory-produced ready-to-use mortar can be bought. (Allen, 2003)Ready-to-use mortars are replacing on-site mixed mortars, due to their advantages over on-site mixed mortar. They are made in factories under tightly-controlled conditions ...view middle of the document...

The silo is delivered to site, complete with integral mixer. Once power and water supplies are connected, mortar can be produced as required. The rate at which water is added can be controlled to achieve the required consistency. The silos can either be single-compartment or two-compartment.( the factory produced silo mortars are of guaranteed composition, and are thoroughly mixed, they will therefore provide satisfactory durability. However, the designer still has theresponsibility to specify the correct mortar designation for the type of structure, exposureconditions and type of masonry units. In hot conditions some stiffening may occur which may be corrected by the addition of a small amount of water followed by trowel mixing on the spot board in the traditional manner. Once the initial set has started the mortar must not be reconstituted in a mechanical mixer or by any other method.The setting of cement is affected by weather and will proceed more slowly when it is colder.This factor is taken into account when the mortars are manufactured but subsequentsignificant reductions in temperature may increase the retardation period and extend theworking life and will have no adverse effect on the masonry. It is inadvisable to proceed with the construction of masonry whilst the temperature is below 3ºC and falling. If the mortar freezes any frozen material or crust should be discarded.Currently Used BindersPortland cement mortar is made by mixing Portland cement, which in this case is the binder, with sand and water. This type of mortar was invented in the mid-nineteenth century, as part of scientific efforts to develop stronger mortars than those that existed at the time. It was popularized during the late nineteenth century. One of its main advantages is that it sets hard and quickly, increasing the speed of construction. However, it is not advisable for it to be used for the repair of older buildings constructed in lime mortar, because this type of binder lacks the flexibility, softness and breathability of lime that is required for such functions for proper function. Sulfate-resisting Portland cement may be used to replace ordinary Portland cement in cement:sand, cement:lime:sand and cement:sand with plasticizer mortars to reduce sulfate attack, in cases where wet conditions might be prolonged in the presence of soluble sulfates either in the ground or in clay bricks.Polymers are other types of binders, which are used in conjunction with cement hydrate binders of conventional cement mortar. The polymeric binders include latexes or emulsions, redispersible polymer powders, water-soluble polymers, liquid resins and monomers. The mortar made using this combination of binders has low permeability, and it reduces cases of drying shrinkage cracking, and its mainly designed for purposes of repairing concrete structures. An example of polymeric binders is MagneLine (Allen, 2003).Masonry cement itself is a pre-mixed,...

Other Essays On Development Of Pre-Dried And Blended Lime Mortars For The Ready-Mix Market

Debt, Development And The Biosphere Essay

5452 words - 22 pages "Thou shalt sanctify the fiftieth year...and shalt proclaim remission to all the inhabitants of thy land: for it is the year of jubilee." This claim is found in the Old Testament in Leviticus 25:10. It is the premise behind the Jubilee 2000 campaign launched by British Christian based charities to relieve the external debt of developing countries. This ancient holy law was designed to protect the social fabric of the Israelite society

Discuss The Importance Of Language In The Development Of The Nation State And / Or Cultural Identity

3439 words - 14 pages , or by significantly smaller groups, such as ethnic minorities who may speak a language of their own, it is undoubtedly a cornerstone of culture and vital to the development of a nation. For this essay, I will be discussing the role of language in the development of both the nation state and cultural identity, although I shall focus primarily on the latter.The idea of the nation state, or 'nationalism', covers a broader spectrum than culture

A Historical Analysis On The Study Of Optics From Pre-Socratic Times Through The Age Of Newton. By Adam R

4219 words - 17 pages point of debate in the early 1670's, for the next thirty years, Newton instead worked solely on chemistry, mathematics, theology, and alchemy, leaving optics out of the mix. After developing his comprehensive theory of force and motion, and publishing his famous work, Principia mathematica philosophiae naturalis in 1686-1687, Newton's pre-eminence in the field of natural philosophy was hard to argue with. It was not until Newton was elected

COMPETITION There are a number of weight loss products and services in the U.S. market today

567 words - 3 pages COMPETITIONThere are a number of weight loss products and services in the U.S. market today, ranging from chemical and herbal treatments to various kinds of programs and equipment that people can use. However, for our product our main competitors are other non-prescription tablets such as; Metabolife, Trimspa Fat Blocker, Xenadrine, Cortislim, Curb Your Cravings, Thermo-Burn and many more ( Other competitors include

Marketing Plan For Development Of Multi-Cultural Calendar

4971 words - 20 pages calendars.Although many people use electronic calendars and day planner calendars, most probably also have hard-copy calendars around their homes as well. Despite the convenience of electronic calendars, hard-copy calendars continue to be a familiar tool for most people to go back to for reference.2.6 MARKET NEEDSCalendars are available in many different formats and mediums. Consumer needs are different. Some research the many calendars available

An Essay On Capitalism Describing Basic Market Principles And The Nature Of Government And Freedom. Somewhat Randian

1537 words - 7 pages than a true socialist republic.What do I mean by different levels? Well, it is important to understand the basic concepts of capitalism. First an entity produces a product. Next, it puts that product on the market for sale. Finally, a buyer purchases the product at hopefully a profit to the producer. This is the essential premise behind capitalism. The profit motive pushes people to create something in order to exchange it for a gain. Now, if one

The Amalgamation Of Science And Technology: An Essay About The Factors And Events That Lead To The Development Of Science From The Greek Period To The Scientific Revolution

4258 words - 18 pages -scientists. It was not what they explained, but how they explained them that made the Greeks so unique. Lloyd stated this as follows: "Their achievement was rather to have rejected supernatural explanations of natural phenomena and to have instituted the practice of rational criticism and debate in that context."1 The Greeks handed down to us the belief in an inherently rational world, the necessary precondition for doing science. With this

Products, Services And Prices In The Free Market

1210 words - 5 pages : strengths, weaknesses, opportunities, and threats. McConnell and Brue define monopolistic competition as "characterized by a relatively large number of sellers producing differentiated products." (McConnell & Brue, 2004, chap. 23, p. 1) Findings of the SWOT analysis seem to support a monopolistic competition market model for Big Mac sandwiches. McDonald's has a global brand name, differentiated products with the market, and intense

The Marketing Mix A Company Uses Is Likely To Be The Same Regardless Of Witch Country Or Region It Operates In. Discuss

966 words - 4 pages by four elements: product, price, promotion and price. Those "4Ps" influence the market significantly, which may decide success or fail of a company. So, a company should use a suitable marketing mix strategy to extend its market. As to the global market, does an international company use the same marketing mix in different countries? The result is no. This essay is going to discuss why an international company uses different marketing mix in

Consider The View That The Development And Management Of Tourism At Destination Can Not Be Left Entirely In The Hands Of The Private Sector

1563 words - 7 pages international relations.The government has interest and the ability in enhancing the overall image of the country through the development and overseas promotion of tourism (Mill & Morrison, 1992). For instance, a national tourism campaign named "Amazing Thailand" was held during 1998-1999 in Thailand, including the promotion of the 13th Asian Games. It brought about 14% increase in the international tourist revenue and also the investment of foreign

"The Genius That Was China" This Essay Is About The Wonderful Technological Developments Of Ancient China And How They Influenced The Development Of The West

1773 words - 8 pages lay in the nature of the Ming dynasty. In seeking to remain in power for a longer period the Ming dynasty realized that conservatism and isolationism must be favoured over development and change. While China did become relatively peaceful and prosperous it didn't make nearly the leaps and bounds that Europe did at the same time. Such a path allowed China to become taken advantage of later, and in the emerging global society it lacked any real

Similar Papers

Marketing And The Marketing Mix Essay

912 words - 4 pages support the positioning strategy.A marketing strategy is a plan identifying what marketing Goals and Objectives will be pursued, and how they be achieved within the time available. Marketing strategies identify and specify target market and generate a practical marketing mix based on this data. Basically, a marketing strategy provides a 'big picture' of what a business's intentions are with regard to marketing.THE MARKETING MIXThe marketing mix is the

The Marketing Mix For Sony Dvd Players

2522 words - 11 pages can choose which programmes they want to advertise in and they will chose programmes that their target market watch. This is expensive though so to run a big advertising campaign during primetime programmes would end up costing the company a lot of money and might not be worth it for the extra sales they would make. To advertise on ITV for 30 seconds during primetime would cost around £50,000 and during daytime it would go down to around

The Meaning Of Training And Development

3965 words - 16 pages , Training and Development (T&D) can be the most important HRM function to treat people well and increase the competitive power for the organizations. Training refers to improving competencies needed today or very soon. In comparison, development refers to activities intended to improve competencies over a long period of time (Jackson & Schuler, 2003, p350-351). Training and development, although different from their focus, are of course

Development Of The Submarine Essay

1530 words - 7 pages and submarine designs, the submarine-launched ballistic missile has become an integral part of our naval weapons arsenal.To understand the need for the development of nuclear missile submarines, there is a need to examine the political climate of the world in the era after World War II. The realignment of the superpowers after the war resulted in a unique situation. The two major naval powers of the day, Great Britain and the United States, were