Ordinary Portland Cement
Ordinary Portland Cement is the most commonly used cement. It is used in concrete and mortar. It is a grey powder, which comes from a mixture of limestone, clay and iron ore. Although gypsum and other materials can be added to control some of its properties, these are often not added because Ordinary Portland Cement is generally readily available.
Ordinary Portland Cement is a hydraulic cement, which means it hardens under water.
Portland-limestone cements (PLCs) contain fairly large amounts of limestone, 15% or more by mass. The idea is that the limestone will react with excess silica in the concrete to form additional cementitious compounds and thus reduce the amount of portland cement used in the mix. This reduces CO2 emissions associated with cement manufacturing, which can be quite significant: around 900 kg per tonne of portland cement.
In addition, the limestone filler tends to improve workability and finishability at early ages. It will also improve most other fresh properties for similar reasons. PLCs have mostly been used in North America, but they are gaining traction around the world due to their environmental benefits.
There are basically two ways to make PLCs:
- Make a high-slag or high-fly ash blend with low clinker content and substitute some of that slag/fly ash for limestone;
- Take a traditional portland cement and grind it together with some limestone.
White Portland Cement
White Portland cement is made from raw materials containing little or no iron or manganese, the substances that give conventional cement its gray color. The color of white cement is determined by its raw materials and the manufacturing process. Metal oxides—primarily iron and manganese—commonly are present in many raw materials used to make white cement, such as limestone and clay. These metal oxides can significantly affect the strength of finished cement; over time, they may react with water to form compounds that cause the concrete to expand and crack. Therefore, it’s important for you to choose your production inputs carefully when considering making white portland cement.
Although it is strong in compression, white portland cement is not as strong as grey portland cement in tension or flexure (bending). This means it should be used only when compressive strength is a prime consideration. For example, white portland can be used effectively in decorative precast concrete products like statues or monuments where a beautiful surface is desired while bending strength of reinforced precast members isn’t necessary.
Masonry cement is a dry powder that, when mixed with water, hardens to form a strong bond. It’s often used in brickwork or stonework projects. Masonry cement is made from Portland cement and lime, along with other ingredients and additives to give it specific characteristics and benefits depending on what you’re trying to accomplish. For example, some masonry cements include an air-entrainment agent that helps the concrete resist freeze-thaw damage during cold weather. A good choice for work that requires strong adhesion between mortar and concrete surfaces, [masonry cement](https://www.amazon.com/Mortar-Bonding-Additive/dp/B005Y3E2IU) can be purchased at any hardware store in premeasured bags—or bulk bins if you’re only doing a little work.
All cement is not created equal. You need to know the different types and their properties before choosing which one you’ll use for your project.
- All cement is not created equal. You need to know the different types and their properties before choosing which one you’ll use for your project.*
Cement is a powder made of limestone, clay, and other minerals. When mixed with water, it produces mortar or plaster. There are many different types of cement used to make concrete. Each cement possesses different characteristics based on its composition and manufacturing process.Choosing the Right Powder for The Job: A blog about choosing the right cement powder for a project.
This blog is about participating in projects and making sure you’re doing them right.
I’m going to be guiding you through how to choose the right powder for your project, so you can get it done right.
Here’s what I’ll cover:**How to pick a cement powder so you don’t get a powder that’s too hard or too soft—or just not the right one!**Why it’s important to pick the right powder for your job—whether it’s concrete, plaster, or even drywall. **How to find out what type of powder you need for your project (there are four different types of cement powders). **How to choose the best type of cement powder for your project. **What type of work gloves you’ll need when working with cement powders (and why). **What kind of safety mask you’ll need when using cement powders.**And that’s just the beginning!
Choosing the Right Powder for The Job:
You’re probably already familiar with the projects that need to get done in your home, office or school. You know, things like: painting a room, patching a hole in a wall or ceiling, putting down some new laminate flooring, or putting up some new drywall in a hallway. You can think of these projects as concrete pouring.
When you’re wanting to pour concrete for any of these jobs, like for example: painting a room, you have to have the right kind of cement powder to go on top of it. There are different types of cement powders that you can use for different jobs. The type of cement powder you use will depend on several factors including what you’re trying to do with the concrete, and whether it’s an indoor or outdoor project. If it’s an outdoor project, then you’ll need the concrete to be durable enough to stand up to the elements. On the other hand if you’re doing an indoor project like putting in new laminate flooring, then again the type of cement powder will depend on whether it’s an indoor or outdoor job. If you are doing an indoor job and want your cement powder to be durable enough to withstand any amount of foot traffic then
HELP WANTED: A blog about choosing the right cement powder for a project.
Nobody likes to do a job that is boring and difficult. But sometimes we need to do things that are both.
Sometimes, there’s no time for fun. When you’re working on a project that requires you to mix cement, you have to be careful not to mix the wrong cement powder with your gunpowder. Your job could take much longer than it should, or your project could fail completely.
It’s important to use the right cement powder for your project—and it’s important to choose it correctly. The wrong powder will make the right kind of concrete hard and crumbly; the right powder will make it smooth and strong.
You want a powder that is consistent with your project’s requirements: a smooth mix will look like glass when you pour it; a crumbly mix will crumble when you touch it. If you’re going to build something with glass pieces, for example, you don’t want your concrete mixed too loose or too dry because then the glass pieces won’t fit together properly when you pour them in later. On the other hand, if you’re going to build something with bricks and stones, for example, you don’t want your concrete mixed too tight or too wet because then the bricks and stones might break during construction.
Choosing the right concrete powder for your job is important. It can make or break your concrete project.
There are lots of things to consider when choosing the right concrete powder for your job:
-What kind of water does it use?
-How fast does it cure?
-How long does it last?
…and so on.
Whether you’re an amateur or professional, choosing the right cement powder can be a little confusing. Or at least that’s what we thought until we started putting together this blog post.
We’ve put together the most up-to-date information about choosing the right cement powder for various types of projects, from school construction and hobbyist projects to the building of your own home or business. You’ll find everything you need to know about different types of cement, how to calculate the proper amounts for each type, and tips for mixing by hand or by machine.
We also cover other helpful information like how to determine whether a cement powder is suitable for a particular project, or how to get it in a form that your car can carry.*
I have a mission for you. Not one that requires great strength, but one that requires great perseverance. You know what I mean: the kind of mission that’s got you busting your butt to find a certain powder, then arguing with the guy in the hardware store about what kind of cement it should go in, and finally breaking down in tears when the guy tells you it’s not going to work.
All because you didn’t read the directions well enough or just don’t have time to try some methods that don’t work for you.
I’m here to tell you: It’s not your fault! The people making decisions about which cement powder is going to work best for your project are humans like us, and we’re all different. We make mistakes too, so we can get frustrated when they happen.
But if we could all just remember this—the decisions we make about which products will work best for our projects—we’d save ourselves many hours of frustration, arguments with guys at craft stores and cement yards, and even tears (not ours).
So let me tell you a little story…