Portland cement Essays

  • Essay On Portland Cement

    922 Words  | 4 Pages

    3. Types of cement: Portland cement: The Romans were probably the first people who made hydraulic binders which will harden underwater by mixing lime with volcanic material. In 1824, an English man called Joseph Aspdin discovered the Portland cement by mixing limestone with clay. 1 According to ASTM C 150, Portland cement is defined as “hydraulic cement produced by pulverizing clinker consisting essentially of hydraulic calcium silicates, usually containing one or more of the forms of calcium sulfate

  • Ordinary Portland Cement

    1043 Words  | 5 Pages

    be presented in this thesis. 3.1 Portland CEMENT Portland cement is composed of a combination of limestone and either shale, clay, sand, or iron. These materials are ground and blended together and heated in a kiln from 2600o F to3000o F. This causes the materials to fuse together to create clinker. Cooled clinker is then ground with gypsum (CaSO4*2H20). The addition of gypsum controls the aluminate chemistry and the setting time of cement concrete. Portland cement reacts with water to form a paste

  • Portland Cement Literature Review

    1393 Words  | 6 Pages

    hydraulic cement-based concrete. Designed some concrete structures, such as the Pantheon in The Rome, one of the best of the Roman architecture that survives to nowadays, the name concrete comes from the Latin "concretus", which means to grow together it is a good name for this material, as the chemical hydration process, which mainly occurs over the time scale of hours and days, causes the material to grow together from a viscoelastic, moldable liquid into a hard rigid solid. Cement is known

  • Portland Cement Case Study

    1314 Words  | 6 Pages

    to climate change. Contributing to 4.5% CO2 emissions globally from Portland cement production, there is an urge to push towards the minimization of CO2 emissions through developments of a sustainable and environmentally-friendly alternative to Portland cement.i Considering the immense volume of usage globally for Portland cement and its environmental impact, this serves as a necessitation for such developments. Portland cement is used as one of the most fundamental binding material for construction

  • Peat Soil Analysis

    2198 Words  | 9 Pages

    need to be studied in order to seek solution to improve its strength. This can be done through stabilization techniques.In this study, combination of chemical stabilization and fiber reinforcement are chosen. Chemical stabilizer used is Ordinary Portland cement (OPC) and the fiber is taken from car waste tyre (Polyester). Physical properties test is conducted to determine the physical properties of the peat. According to von Post classification system, the type of the peat used is classified under H7

  • Essay On Concrete

    1324 Words  | 6 Pages

    The hardened state properties apart from strength are impermeability, impact strength , fatigue strength, and good acoustic and thermal characteristics. Concrete production is the process of mixing together the various ingredients—water, aggregate, cement, and any additives—to produce concrete. The batching , mixing, transportation, placing, compaction, finishing and curing are very complimentary

  • Factors Affecting Concrete Block And Mortar

    1233 Words  | 5 Pages

    concrete blocks with 1:3 CM and 1:3 CSM. A concrete block triplet specimen is used to obtain shear bond strength of concrete block mortar joint. The joint thickness of the mortar of 10mm is maintained for all the 4 cases. Capping of 10mm thick (1:1 cement mortar) is provided for the top face of concrete block and bottom faces of the outer concrete blocks. Vertical load is applied gradually till the bond between concrete block and mortar joint failed. Hence shear bond strength is estimated and is calculated

  • Kirkland Signature Calcium Research Paper

    889 Words  | 4 Pages

    # 6 Kirkland Signature Calcium Calcium is one of the most common alkaline-earth metal elements found in nature. It is very important both for man and plant life. Calcium is a building block of bones and teeth, which transmits nerve signals. To all these processes to function properly, it is necessary that your level of calcium in the blood is always good and regular. If you don’t take enough calcium trough food, you need Kirkland Signature Calcium. What is " Kirkland Signature Calcium. " (150

  • Descriptive Essay On Swaziland

    756 Words  | 4 Pages

    Spectacular Swaziland Our armchair travels have taken us to Swaziland, a small, landlocked monarchy in southern Africa. It shares a northeastern border with Mozambique then stretches down to South Africa with a background of the Lebombo Mountains. Seat of Monarchy and Parliament Lobamba is the seat of Swaziland’s monarchy and parliament located southeast of the capital city Mbabane. Visit the National Museum with interesting displays of Swazi culture including a traditional beehive village and

  • Advantages Of Reinforced Concrete

    839 Words  | 4 Pages

    Super structure: Reinforced concrete has been chosen as building material for DATUM Setiawangsa project, for some reasons such as: The comprehensive strength of reinforced concrete is more as compared to other construction materials. It is good in tension and has better resistance to fire than steel, and other such construction materials. Concrete structures are easy and affordable to maintain, especially when it comes to structures like retaining walls, dams, piers and footings etc. Concrete

  • Disadvantages Of Marble Mining

    869 Words  | 4 Pages

    Waste materials from marble processing are also needed because of their high silica and lime content. It is used as ingredients in the manufacture of detergents, toothpaste, and soap. The crushed stones are also washed out with abrasives and sold as artificial sand (Año, 2002). The white marble stone is ground to powder and used in industrial, agricultural and pharmaceutical applications because of the calcium carbonate found in them. Calcium carbonate is very effective in neutralizing acids which

  • Advantages And Disadvantages Of Pneumatic Caisson

    762 Words  | 4 Pages

    Pneumatic caisson provides dry working conditions, which is advantageous for soil excavation and concrete-sealing of the caisson bottom. It is also well suited in areas where other underground construction methods might cause adverse effects to adjacent ground structures. Pneumatic Caissons are divided into two types—Traditional Pneumatic Caisson and Modern Pneumatic Caisson, according to different soil excavation methods. 1) Traditional Pneumatic Caisson (Manned Pneumatic Caisson) Soil excavation

  • Double Deck Elevator Analysis

    1072 Words  | 5 Pages

    Double Deck Elevator Basic Analysis “Journey of a thousand mile starts with a step” and the step in elevator analysis is starting with very tough specifications related to the building, speed, passengers’ behavior, etc. These specifications are the same for single deck elevator analysis which are presented in [7]. However, the double deck elevator has more specifications due to its nature. This chapter includes the assumptions that the derivations are based on, Monte Carlo simulation, derivation

  • Advantages And Disadvantages Of Flooring

    931 Words  | 4 Pages

    FLOORING AND EPOXY FLOORING ADVANTAGES OF VACCUM DEWATERED FLOORING Due to dewatering through vacuum both workability and high strength are achieved simultaneously. VDF Flooring enhances the wear resistance of concrete surface It reduces water cement ratio and may increases the compressive strength by 10 to 45% and lowers the permeability. The surface obtained after vacuum dewatering process is plain and smooth due to reduced shrinkage. Early removal of formwork is possible and surface can be

  • Essay On Slope Stability

    1015 Words  | 5 Pages

    1.1 General In the field of geotechnical engineering especially in civil engineering project, slope stability is one of the most important problems either in large or small project like construction of dams, highway construction, urban development in hilly area and all other type of constructions. Developing countries like Malaysia led to high demand on constructions and infrastructural development works. Thus soil slope stabilization problems are very considerably throughout Malaysia. Slope stability

  • Load Deflection Analysis

    913 Words  | 4 Pages

    Load deflection behavior The test results of Ultimate load and deflection are given in Table 4. It shows that the addition of fibers into the concrete increased the load carrying capacity and deflection at ultimate load. HSBC1 and HSBC2 specimens’ ultimate load is 24 kN the same value was obtained for the Hybrid fiber reinforced high strength concrete specimen – HYFBC2.1. The graphs are shown in Figure 6. When the beam is subjected to cyclic loading, the graphs are shown in Figure 7. The energy absorption

  • Zero Pcb Lab Report

    813 Words  | 4 Pages

    Chapter 4 PCB DESIGN 4.1 PCB DESIGNING STEPS The most important requirement of this project was to build a PCB with minimum weight and size. A Zero PCB is a drilled board. Drilling process removes a lot of material from board, and the weight is reduced. Designing method is as follows. 1. Decide proper places for components 2. Actual Placement of components on Zero PCB 3. Connecting Tracks with solid wires 4. Testing for continuity and Debugging Four PCBs are designed in this project

  • Natural Hydroxyapatite-Diopside Case Study

    4478 Words  | 18 Pages

    Natural Hydroxyapatite-Diopside (NHA-Di) nanocomposite as an excellent bio-ceramic coating for titanium implants Amirsalar Khandan1, Majid Abdellahi2, Reza Vatankhah Barenji1, Neriman Ozada1, Ebrahim Karamian2 1Mechanical Engineering department, Eastern Mediterranean University, North Cyprus, Gazimağusa, TRNC,Mersin 10 Turkey 2 Department of Materials Engineering, Najafabad Branch, Islamic Azad University, Isfahan, Iran Corresponding author: Majid Abdellahi; Email: Abdellahi@pmt.iaun.ac.ir Abstract

  • Essay On Mortar

    823 Words  | 4 Pages

    workable paste of cement, sand and water which is used to fill the irregular gaps, voids and bind the masonry units together. The cement mortar is also used in plastering of wall structures in order to give a smooth finish and protect the structure. But cement plaster possesses low strength, absorbs more water and large number of pollutants from the atmosphere and deteriorate the structure which leads to surface cracks and damping. Thus in order to suppress these defects, cement plaster is added with

  • Discuss The Advantages And Disadvantages Of Cement

    1040 Words  | 5 Pages

    Cement and sand ready to be mixed. There are many types of concrete available, created by varying the proportions of the main ingredients below. The mix design depends on the type of structure being built, how the concrete will be mixed and delivered, and how it will be placed to form this structure. Cement Portland cement is the most common type of cement in general usage. It is a basic ingredient of concrete, mortar, and plaster. English engineer Joseph Aspdin patented Portland cement in 1824;