Portland cement

4. What is PPC Cement? What is Pozzolana? Pozzolana is a compounds possessing cement properties formed by silica materials with very little cement properties, reacted with calcium hydroxide at ambient temperature. Pozzolana materials are natural fly ash, volcanic ash; produced by combustion of calcined clay and coal. Any of these materials can be used in preparing Portland Pozzolana Cement. How is Portland Pozzolana Cement (PPC) manufactured? PPC is produced in two ways: 1. Grinding pozzolana materials

General Ordinary Portland cement (OPC) is most widely used cementitious material and is the second most consumed resource in the world as it forms the basic ingredient in concrete and Bricklayer Joseph Aspdin of Leeds, England first prepared Portland cement early in the 19th century by sweltering powdered limestone and clay in his kitchen stove [13]; this laid the foundation for an industry to develop a binder called ordinary Portland cement. The major applications of concrete in the construction

Conventional cement The function of cement is for isolating production zone and to provide support for the casing [11].Portland cement is made up of calcium oxide (CaO), silicon dioxide (SiO) and water (H2O) which the composition of calcium carbonate is around 75-80 wt% and 20-25 wt% of clay [7],[14].. Compressive strength of Portland cement is developed through hydration. Hydration is chemical reaction between water and cement compound. The rheology and early strength of cement is developed

different water to cement (W/C) ratios. The experiment was conducted in two parts, where the workability was tested first by conducting a slump test and a compaction test

Weatherford oil and gas service company, “they guide the casing to total depth, prevent contaminated mud from entering the casing, provide a landing point for casing wiper plugs, reinforce the lower end of the casing string, and ensure greater accuracy of cement slurry displacement”. Floating equipment is typically made up of 2 or 3 important tools, which include a float collar and float shoe or guide shoe. This paper will focus on the mechanisms and

and radiopaque (Parirokh et al., 2010; Kratchman et al., 2004) Mineral trioxide aggregate (MTA) is an endodontic material first presented as a root end filling material in 1993 (Torabinejad et al., 1993). It is also used extensively as a reparative cement in root perforations and pulpotomies due to its biological properties (Unal et al., 2010). MTA is composed of silicate oxide, tricalcium silicate, tricalcium

Concrete as is well known is a heterogeneous mix of cement, water and aggregates. The admixtures may be added in concrete in order to enhance some of the properties desired specially. In its simplest form, concrete is a mixture of paste and aggregates. Various materials are added such as fly ash, rice husk, and admixture to obtain concrete of desired property. The character of the concrete is determined by quality of the paste. The key to achieving a strong, durable concrete rests in the careful

The Mechanical Behavior of Geopolymers after exposing to High Temperatures Name University Supervisor Due Date: Executive Summary This paper reviews the mechanical behavior of geopolymers after exposing to high temperatures. The review begins with a brief overview of geopolymers and examines the extant literature on the mechanical behavior of geopolymers after exposing to high temperatures by artificial intelligent techniques. The final and compressive strength of geopolymers is

..............1 1.1 Background of the Study 1 1.1.1 The Kenyan Cement Industries 3 1.2 Statement of the Problem 4 1.3 Objectives of the Study 5 1.4 Significance of the Study 5 1.5 Justification for the Study 6 1.6 Scope of the study 6 CHAPTER TWO: LITERATURE REVIEW 7 2.0 Introduction 7 2.1 The concept of green procurement 7 2.2 Appreciation of Green Procurement in the Cement Industry 7 2.3 Green Procurement Practises in the Cement Industry 9 2.4 The Impact of Green Procurement on the Performance

accountable for around 4% of particulate emission. The enormous demand of construction industries has highlighted the requirement for sustainable development and intelligent utilization of resources, pointing towards two commonly used materials i.e. cement and nanomaterial there by substantially used and abused. "Sustainable development meets the needs of the present without compromising the ability of future generations to meet their own needs" -The World Commission on Environment and Development,