The Basic Facts on Admixtures for Concrete

Basic Facts on Admixtures

M N Ramesh
M N Ramesh, Director, Talrak Construction Chemicals Pvt. Ltd., Bangalore
Chemical admixtures are the forth ingredient of the concrete which is inevitable for the modern concretes. The properties of the concrete can be modified either in the plastic or the hardened state as required. Chemical admixtures play a very important role in doing the same.

High Performance Concrete (HPC)
Concrete has renewed its definition from just being a mixture of cement, sand, and aggregate along with water. Advancement in Concrete Technology has revolutionized this "mixture" of above mentioned various conventional ingredients in the fulfillment of several desired properties.

Concrete nowadays has become much more worker-friendly, stronger & more durable than ever before with various other desirable properties. Concrete with such advanced diversified properties is referred to as HPC which signifies superior concrete performance during wet stage (mixing & placing process); with higher strength in hardened stage along with a greater durability in long-term with respect to Normal concrete.

Use of Admixtures
Admixtures refer to those materials in concrete, in addition to its basic constituents: Cement, Sand, Aggregate & Water; usually added during mixing process. Admixtures alter the concrete properties in various positive ways like:
  1. Increase in Workability
  2. Increase in Homogeneity & Cohesiveness
  3. Increase in Strength
  4. Increase in Durability
  5. Increase or Decrease in Setting Time
  6. Increase in Water proofing Property
  7. Increase in Corrosion Resistance of Steel
  8. Increase in Soundness
Admixtures are mainly of two types viz. mineral and chemical admixtures.

NBM&CW September 2016

Click Here
To Know More / Contact The Manufacturer
Please provide your details we will contact you as soon as possible
Please let us know your name.
Invalid Input
Please let us know your Designation.
Invalid Input
Please let us know your City.
Please let us know your State.
Please let us know your Country.
Please let us know your Contact Number.
Please let us know your email address.
Please brief your query.

Self Concrete Mixer: AJAX Soaring Up New Heights!

AJAX, a world-class leader in providing concreting business solutions, was established in 1992 for manufacturing Self-Loading Concrete Mixers. Today, it is positioned as a global leader in this product category. Over the years Read More ...

Durability of Concrete made with Marble Dust as partial replacement of Cement subjected to Sulphate attack

This experimental study presents the feasibility of the production of more durable concrete with marble dust as partial replacement of cement by 5%, 10%, 15% and 20% by weight. Standard concrete cube specimens of size 150mm×150mm×150mm Read More ...

Putzmeister Delivers 5,000th Stationary Concrete Pump

Putzmeister India recently rolled out its 5,000th Stationary Concrete Pump from its factory in Verna, Goa. Established in 2007, Putzmeister offers customers in India, Nepal, Bangladesh, Bhutan, Sri Lanka and Maldives concreting Read More ...

Upscaling the Use of Recycled Aggregate Concrete

This paper presents an overview of several aspects that can further upscale the use of recycled aggregate concrete. It presents the main steps that need to be followed to demolish existing barriers to the use of recycled Read More ...

Challenges Facing the Concrete Industry

There are still a number of challenges facing the Concrete Industry. From a political and social viewpoint, improving the sustainability of concrete construction has to be the first challenge, not because concrete solutions are Read More ...

Strength behaviour of M25 and M45 concrete incorporating accelerators and stone waste

Accelerators are used to accelerate the setting and development of concrete at early age, and also speed up the construction work for early removal of formwork. Due to depletion of natural resources, and emission of carbon dioxide during Read More ...

Durability of Concrete made with Marble Dust as partial replacement of Cement subjected to Sulphate attack

This experimental study presents the feasibility of the production of more durable concrete with marble dust as partial replacement of cement by 5%, 10%, 15% and 20% by weight. Standard concrete cube specimens of size Read More ...

Effect of Aggregate-Cement Ratio on Engineering Properties of Pervious Concrete

Pervious concrete is a composite type of material containing coarse aggregate, little or no fine aggregate, cement and water. In pervious concrete, carefully controlled amount of water and cementitious materials are used to Read More ...

Recent Advances in - Self-Compacting Concrete

In line of advanced concrete technology and research self-compacting concrete (SCC) contribute an innovative role for the development and its implementations worldwide. SCC, also known as self-leveling concrete Read More ...

Life-Cycle Management of Concrete Structures

A concrete structure is required to maintain its functions and performance during its design service life. However, serious damages have been sometimes found, which may be caused by physical and chemical actions. Read More ...

Green, Sustainable Construction: Solutions for Affordable Housing

Concrete is the second most consumed material in the world after water and it is used most widely in the construction industry due to its high compressive strength and other properties.[1] Therefore, the basis of Read More ...

Aesthetical Integration in High Performance Concrete for Infra Construction

Concrete, the wonder material that has shaped our surroundings, was invented in the mid-18th century, and continues to be the most widely used construction material. Concrete came to architects and designers as a boon Read More ...

Comparative Study of concrete mix design using IS and ACI methods with and without super-plasticizer

Concrete is a composite material consisting of cement, water, and aggregates. These ingredients can be mixed in different ratios to attain desired strengths. Though rough mix ratios for different strengths Read More ...

Non destructive testing for determining the strength of concrete

Civil engineering infrastructures are designed to operate for long periods of time, such as 50 to 100 years. However, several unpredictable and uncontrollable factors reduce their expected performance and life Read More ...

An Experimental investigation on utilizations of Marble Dust as partial replacement of Cement in Concrete

Marble dust is an industrial by-product obtained during sawing, shaping, and polishing of marble and causes a serious problem to the environment. Research indicate that the effect of mixing marble dust on the Read More ...

Use of Ferrocement for Construction of Mini Check Dams and Diversion Structures

Diversion structures and check dams are constructed for diverting/ storing the water, flowing in shallow rivers/ streams for various purposes. The present practice is to use brick / stone / stone block masonry Read More ...
NBM&CW

New Building Material & Construction World

New Building Material & Construction World
MGS Architecture

Modern Green Structures & Architecture

Modern Green Structures & Architecture
L&ST

Lifting & Specialized Transport

Lifting & Specialized Transport
II&TW

Indian Infrastructure & Tenders Week

Indian Infrastructure & Tenders Week