blended cement

All about cement, types of cement grades and blended cement!

An English brick layer, Joseph Aspdin, in 1824, first discovered cement and called it Portland cement as it resembled a limestone found in Portland. The Portland cement is made up of –:

·         Lime (CaO)                        60 – 70%

·         Silica (SiO2)                      20 – 25%

·         Alumina (Al2O3)                5 – 10%

·          Ferric oxide (Fe2O3)          2 – 3 %

There are many types of cement out there for engineering and construction purposes like Portland Pozzolana Cement (PPC), Sulphate Resisting Portland Cement (SPC) and Ordinary Portland Cement (OPC). Ordinary Portland Cement should be used for house construction. It is very important to keep in mind the environment of the construction site while selecting a type of cement. This is for durability considerations of buildings and structures. Making a prudent choice now, regarding a type of cement, saves the repair and restoration costs later and also, more importantly, avoids the construction of awry and lopsided structures that may prove calamitous in the future.

The Ordinary Portland Cement is available in the following types of cement grades:

1.      33 Grade Ordinary Portland Cement – The fineness of 33 grade OPC should be between 225 and 280. It has low compressive strength and therefore is not normally used where M-20 or higher grade of concrete is required. It is used for general civil construction work, plastering, flooring, etc.

2.      43 Grade Ordinary Portland Cement – It is the most popular general purpose cement in the country today. It is used where a member takes high tensile stress, for grades of concrete between M-20 and M-30. RCC works, precast items, asbestos products such as sheets, pipes, etc are some of the applications of 43 grade OPC.

3.      53 Grade Ordinary Portland Cement – It is used where concrete grade higher than M-30 is required. It is suitable for cold weather concreting. Its applications include PSC works, bridge, roads, multi-storied buildings etc.

BLENDED CEMENT

DictionaryOfConstruction.com defines blended cement as a hydraulic cement consisting of an intimate and uniform blend of (a) granulated blast-furnace slag and hydrated lime, (b) Portland cement and granulated blast-furnace slag, (c) Portland cement and pozzolan, or (d) Portland-blast-furnace slag, cement, and pozzolan. Blended cement is produced by intergrinding Portland cement clinker with the other materials or by a combination of intergrinding and blending.

The advantages of using blended cements are so many that now they are being considered superior to the hitherto deemed best, OPC category of cements.  The technical advantages of using blended cement include –

1.      It uses less water and therefore helps in keeping the water-cement ratio low.

2.      Using blended cement improves durability of structures as it is finer as compared to OPCs and therefore the permeability of concrete is less.

Using blended cement also has lower environmental impact. The environmental advantages of using blended cement include –

1.      Blended cements save energy to the tune of 0.8 to 1.2 MWH/ton of cement.

2.      7% of total pollution that is caused by cement production alone can be proportionately reduced if more blended cement is used.

3.      Conserves natural resources.

Blended cement

All about blended cement!

Cement is the binding agent, which is used for varied purpose and most of the people are not aware of the different types of cement grades which is why it become more difficult to find the best quality cement. Well without doubt laymen usually don’t pay heed to the technical aspect which is why it becomes way more difficult to find the best quality cement. If you are not aware on how to find the right cement then you are at right stop as here we bring you detailed guide that will help you to have the better understanding about the different grades of cements.

Cement is the necessary ingredient for building therefore it becomes very important to have the better understanding that will help you to have the better insight that will help you to have the drop the dough on the right product that is doing the round in the souk. Without delay, let us quickly delve with the cement its types and most importantly grades of cement and how the blende cement is formed.

 Blended cement is made up of ordinary Portland cement(OPC) with mineral additives like flying ash, silica and other additives are used for making the blended cement. As compared to regular Portland cement blende cement is considered of superior quality. Apart from the quality it is loaded with various advantages therefore, it is important to have the in depth knowledge that will help you to have the complete understanding  so that you can pick the best quality cement that will help you to give better building  both in terms of strength and ductility.

Let us quickly delve in with its various advantagesand why one must use it in order to have the best material that would affect the overall health of your home or any other building.The advantage of cement can be broadly categorized in two categories the former is technical advantage and the latter is ecological or environmental advantage and here we will delve with the both so you can easily become cognizant of its varied advantage.

Advantage of blended cement

·         Less water consumption, as compared to normal Portland cement, that will help you to use little less water.

·         The blended cement is finer as compared to other Portland cement; it reduces the permeability of the cement where by it increases the strength of the structure.

·         It saves the energy as well it becomes way more important to choose blended cements as it various aspect of pertaining environment  and other factor that  one must consider before even making.

 There are different grades of cements that are currently available in the market place and it become important to choose the right grade cement that will help you to choose the typesof cement gradesthat will help you to understand which one should use in accordance ofthe need and requirements. There are three types of cement grades that are used in and they are namely: grade 33, grade 43 grade53.

blended cement

Know the advantages of blended cement

Before going through the advantages of blended cement, it is must to know as what blended cement is all about and how it is made. Basically this type of the cement is made by mixing well the ordinary Portland cement with the mineral ad mixtures and with the additives as the silica fumes, the slag, fly ash and others. This cement is considered as the most superior type of cement as compare to those of OPC category of conventional cements. The advantages of this cement are several and it is categorized in two different parts as the technical advantages and the environmental advantages.

1. The technical advantages

• The blended cement helps in reducing the water demand and thus helps in reducing the ratio of water and cement well.
• It also helps in improving largely the workability for same content of water
• These cements are also finer, when compared to the ordinary Portland cement and the concrete permeability is also less with which gives back the improved durability.

2. The environmental advantages

• It helps greatly in saving energy, as they are obtained after addition of the mineral admixtures and the OPC. The energy which gets utilized for producing the OPC thus gets saved with it.
• The blended cement also helps in conservation of the natural resources as the used admixtures of the minerals are basically the waste products of the steel and thermal plants, with the usage of this product, one can conserve most of the precious minerals as the silica, clay or lime stone.
• Helps in controlling the pollution, the pollution gets controls as the production of cements gets reduces. It has been found in reports that around 7% of the total pollution is caused due to the production of cement and can be reduced proportionally if more of the blended cement is used, one can buy cement online as well.

As world is turning digitally every minute and second, how can the cement companies stay behind with these advanced technologies and innovations. Some of the top notch producers of cement have joined the internet world, and is selling their quality rated cement online. You can buy cement online, as the ordinary Portland cement, the blended cement or any other easily and at affordable prices. You can buy them from their websites, by making use of their apps and others. The world has turned smartly, with the usage of smart phones, the digital innovations where now people prefer more for shopping online. These online stores have become the one stop solution for all, as compare to the physical markets or stores.

Shopping and to buy cement online is a good idea indeed. It helps all in getting all the information about the product, the complete quality components and how it can be used efficiently for the related work. So what are you waiting for? Select the best brand of cement online and buy it now at reasonable prices.

infrastructure services

portland slag cement- Its Really better, Try it

Suitable for road, ports, tunnels and river portland slag cement is used all across for its ecological value. With the rising consciousness with respect to diminishing natural resources, the construction industry has shifted their focus to using eco friendly material than harnessing core natural resources. Technology and technical knowledge has enable land contractors to make use of blast furnace slag from steel, which is undoubtedly effective in controlling pollution and making environment safer, and secure. Today maximum infrastructure services are completed using slag cement instead of ordinary Portland cement. Slag cement is known as ‘greener cement’ as it is nature permissive.

Core benefits of using slag cement

·         Now slag cement is ordained to end in disposal but today it is deemed as one of the finest value-added product from a blast furnace slag. Slag cement comes with two benefits one it lessens the load on landfills second it diminishes air emissions at steel plants by involving the core granulation procedure. You can make use of slag cement in concrete thus lessening the ecological impact of concrete.

·         Now while enumerating other benefits, this portland slag cement will effectively be reducing greenhouse gas emissions by lessening down one ton of carbon-di-oxide, as this slag cement needs less energy so it reduces energy consumption quite effectively. It again reduces the quantity of virgin materials which are dug out to make concrete.

·         Making the construction lighter in color, this material reduces the urban heat island effect. so this material is wonderful for exposed concretes and pavements. Even the Environmental Protection Agency acknowledges the environmental advantages of using the slag cement in concrete. Even the Resource Conservation Recovery Act (RCRA) has recognized this product as the recovered product

 What is slag cement used for

Slag cement is extensively used in exposed concrete as one of the separated cementitious component, often it is used as one of integral component while blending cement. Working together with portland cement, slag cement works synergistically to enhance strength, potency thus reducing permeability, enhancing resistance to chemical attack and restraining rebar deterioration. Slag cement is exploited  in literally all concrete applications, while making concrete pavements, foundations, structures, dams and retaining walls, mass concrete applications, for pre cast and pretressed concrete, pipe and block, when concrete is exposed to the harsh elements of nature for example wastewater treatment and marine applications. They are high strength and high performing concrete and provides years long service to bridges or high-rise structures. Slag cement can be  used in non-concrete application for example soil-cement and perilous waste solidification.

Why you should use PSC

The intrinsic chemistry offers manifold benefits over ordinary cement and the most important advantage is, it comes within budget. Although it is identified as one of the finest eco friendly items of all but builders today make use of this material for their Ultimate compressive strength, Minimised shrinkage cracks, Low risk of cracking, Better compatibility with all types of admixtures, Improved workability, Excellent resistance to Chloride & Sulphate attacks, Superior finish, Better resistance against alkali-silica reaction and Ease of pumping.

Blended Cements

A Glimpse on Qualities of Blended Cements

“Home is where heart is”. Our home is a place where we live, share, laugh, cry, celebrate and experience different phases of our lives. Wherever we go, but coming back home is gives us a sense of security and satisfaction. We all want to gift our loved ones a secure place. Life has become a risk now, increasing population and high risk of earthquakes has made life insecure. Hence, it is essential to choose the proper material for your house so that your loved ones could live without strain.

In the market of materials needed for home making, cement plays an important role. It is the key material and should be chosen wisely. Technically talking, cement is a binder which can bind other material together. It is a mixture of limestone and clay. It is a fine mineral powder manufactured with very precise processes. When submerged with water, it hardens and binds the material used with it.   

Types of Cement Grades-

With the various uses of cements, there are a variety of them which can be used. Different types of cements are-

·         Gray Ordinary Portland Cement- mainly composed of clinker.

·         White Portland Cement-composed of limestone and kaolin clay

·         Masonry or Mortar- mainly used for brick work

·         Oil-Well Cement- applicable for different depth, chemical aggression or pressure levels.

·         Blended Cement- composed of pozzolans, fly ash, and silica fume.

Specifically here we discuss about Blended Cements-

Blendedcement is obtained by mixing Portland cement with mineral admixtures or additives like fly ash, slag or silica fumes. Blended cements have many advantages on ordinary Portland cement and are now-a-days considered to be superior. Presently in India about 30% of the total production is blended cement. In UK and USA, the usage of blended cement is nearly 90% of total production.

Advantages of Blended Cement-

Blended Cements

·         Blended cement reduces water demand thereby reducing the water-cement ratio.

·         Workability is improved.

·         Blended cements are considered to be finer than OPC (ordinary Portland cement).

·         Permeability of concrete is less which improves durability.

Apart from the technical advantages, blended cement also has environmental advantages.

·         Saves Energy- blended cements are mineral admixtures with OPC hence the energy which would have otherwise been utilized for production of OPC, is saved. The saving is up to 0.8 to 1.2 MWH/ton of cement.

·         Natural Resources are Conserved- blended cements use admixtures, which are the waste products of thermal and steel plant. By using these, we are conserving silica, limestone and cay.

·         Controls Pollution- It has been estimated that 7% of the total pollution is only due to cement production. As blended cement reduces the production of cement up to a level, hence it controls pollution.

Penna Cement-

One of the most famous and trusted brand of cement is Penna Cement, founded in 1991. Located in Hyderabad, this brand receives demand of cements from small house owners to real state dealers. They have grown organically by developing in-house expertise across entire value chain in the cement industry. At Penna, they believe in building quality relationships.   

So if you are one of those in line to build up your house, do consider the cements you use and the brand you choose.