High Performance Concrete Reinforced with Glass Fibres Essay

High Performance Concrete Reinforced with Glass Fibres - Essay Example In order to achieve performance-related properties specific to performance in HPC, attention should be directed to the combination of performance requirements (such as strength limits and permeability) and prescriptive requirements (such as air content limits or dosage of supplementary cementing material) (Ferraris and Lobo, 1998). Depending on the HPC mixtures examples of HPC include High-early-strength concrete, high-strength concrete, high-durability concrete, self-compacting concrete and reactive-powder concrete. High-Early-Strength Concrete (HESC) High-Early-Strength Concrete (also known as fast-track concrete), achieves its specified strength at an earlier age compared to normal concrete. This earlier age is the time period in which a specified strength should be achieved and may range between a few hours (or even minutes) to several days. Although it can be achieved using traditional concrete ingredients and concreting practices, the production of HESC will sometimes require s pecial materials or techniques. Depending on the age at which the specified strength must be achieved and on job conditions, one or a combination of the following can be used in the production of HESC: type III or He high-early strength cement, high cement content, low water-cementing materials ratio, higher curing temperature, higher freshly mixed concrete temperature, silica fume, chemical admixtures, special rapid hardening cements, insulation to retain heat of hydration, and/or steam and autoclave curing. High-early-strength concrete is used for prestressed concrete to allow for early stressing; precast concrete for rapid production of elements; high-speed cast-in-place construction; rapid form... High-Early-Strength Concrete (also known as fast-track concrete), achieves its specified strength at an earlier age compared to normal concrete. This earlier age is the time period in which a specified strength should be achieved and may range between a few hours (or even minutes) to several days. Although it can be achieved using traditional concrete ingredients and concreting practices, the production of HESC will sometimes require special materials or techniques. Depending on the age at which the specified strength must be achieved and on job conditions, one or a combination of the following can be used in the production of HESC: type III or He high-early strength cement, high cement content, low water-cementing materials ratio, higher curing temperature, higher freshly mixed concrete temperature, silica fume, chemical admixtures, special rapid hardening cements, insulation to retain heat of hydration, and/or steam and autoclave curing. High-early-strength concrete is used for prestressed concrete to allow for early stressing; precast concrete for rapid production of elements; high-speed cast-in-place construction; rapid form reuse; cold-weather construction; rapid repair of pavements to reduce traffic downtime; fast-track paving; and several other uses. In fast-track paving, use of HESC allows traffic to open within a few hours after concrete is placed.

Stereotyping Essay Example | Topics and Well Written Essays - 750 words

Stereotyping - Essay Example The world perceives the African woman, a black woman as a strong hardworking woman, which makes her body to resemble that of the men. As such, the stereotype that a black woman looks more like a man than like a woman comes in comparison of the black women alongside women from other races in the world, such as their Asian and American counterparts. They argue that the black skin denies the black woman an ability to expose her beauty and glow in the sun. Contrary to this, the black skin makes a woman uglier and less feminine, hence somehow inferior to women from other races. The masculinity of a black woman also arises from her strength and ability to do things that other women from different races find it difficult to undertake, such as digging land with a hoe while in the late stages of pregnancy, giving birth the natural way without many struggles. For instance, some women fail to push their babies out naturally during birth thereby necessitating a cesarean delivery. France is perce ived as the country of love, and Paris the city of romance. As such, this perception makes the French, and especially their women, professionals when it comes to matters love and romance. this stereotype denotes that a French woman is the most romantic lover a man can have all over the world as opposed to women from other countries. Evidently, this proves the fact why most people chose to go to Paris for their honeymoon, mostly to enjoy and tap the love and romance that flows from the French women.

Managing hospitality resources Essay Example | Topics and Well Written Essays - 3000 words

Managing hospitality resources - Essay Example This paper takes a glance at the factors which influenced at the survival and economic prosperity of the hotel industry: the availability of leisure time for people and the possession of a high disposable income by them. This is so because; most people will go to the hotels after they have serviced the domestic needs and remain with extra disposable income, which they can use for leisure, recreation, and entertainment. Without ample leisure time however, it is difficult for them to attend to such activities. Since the industry mostly offers food service and accommodation, competition in this field is inevitable. With the advances in technology witnessed of late, the industry can take the advantage of these advances to obtain a competitive edge over its competitors. Technology can therefore be used in the industry to improve operational efficiencies, afford the hotel guests enhanced and quality services, and increase the income earned by the hotels. The pace and rate at which technolo gy is changing is too high, so that it leaves the whole industry confused in the right technology to adopt. Since a technology considered superior today might be found redundant after a few months or years, the industry has a difficult time deciding on which ones to incorporate into their systems. Thus, the choice of appropriate technology for the hotel industry is a paramount issue. Technology can support the management of the hotel industry through many ways. It can be used to enhance the guest experience, an aspect that will allow them visit the hotel again or recommend others to the same facility. This way, technology can be used to enhance customer services, through creating avenues that will enhance faster check- ins and check-outs, allow a timely response to any of the customer requests and enhance their stay environment through a range of entertainment and recreation activities (Bentley, 2005 p66). The other way in which technology can support the management of the hotel ind ustry is in improving the operational efficiencies. This can be achieved through applying technology to reduce the administrative requirements, lean the staff requirement in the facility to sizeable and manageable level, and enhance the cross-functional training. Technology can also be used to centralize most of the functions of the hotel, so that they are operated from a centralized locality, while at the same time enable the management of the hotel to distribute widely its services to the point of easy access by their clients. Since customer expectations as to the services they should receive from the hotel industry are increasing by the day, incorporation of appropriate technology can enhance the possibility of meeting their requirements. Presently, customers expect to be served within the least time possible when they enter into a hotel facility. In such a case, the incorporation of advanced technology that will be used to communicate the requirements of the customers from the r eception department to the kitchen and lodging department will go a long way to ensure that customers are not delayed (Lew, 2008 p412). Management can also use technology to enhance their cost control functions. Appropriate technology such as a system to procure, order, receive and store raw materials and other products required by the hotel facility can serve to reduce the cost incurrence by the hotel (Patrick, 2010 p35). For example, if a hotel lacks a good stock control system, it is likely to find itself lacking some materials while they are highly demanded. This would mean that the hotel would fail to meet their customer needs and consequently lose their loyalty and goodwill. If a hotel facility incorporates a good stock

Philosophy In The Matrix Movies Essay Example | Topics and Well Written Essays - 750 words

Philosophy In The Matrix Movies - Essay Example The Matrix movies explore Plato’s idea of reality as an illusion, particularly depicted in his â€Å"Allegory of the Cave.† In this literary work, a cave of people imprisoned in a distinct manner since conception is Plato’s depiction of this illusion. In this allegory, one prisoner escapes the imprisonment after being illuminated and liberated concurrently. This particular prisoner’s experience metaphorically indicates the procedure by which humans seldom free themselves from reality’s misconceptions and superficiality (Lawrence, 2004). In Enter   The Matrix, the matrix pulls Neo from a sort of cave from where he gets a glimpse of the truth about reality for the first time in his life. This experience makes him realize that everything he believed to be real was, in fact, an illusion, just like the prisoners in Plato's allegory. Plato adds that people who liberate themselves are obliged to tell the rest who are still in the â€Å"cave.†    In the first Matrix film, Neo fulfills this derivative when he makes it his priority to save humankind from ignorance and credulity.The Matrix movies explore Plato’s idea of reality as an illusion, particularly depicted in his â€Å"Allegory of the Cave.†   In this literary work, a cave of people imprisoned in a distinct manner since conception is Plato’s depiction of this illusion. In this allegory, one prisoner escapes the imprisonment after being illuminated and liberated concurrently.