self compacting concrete mix design excel sheet

The new generation superplasticizers termed poly-carboxylated ethers (PCE) is particularly useful for SSC. Mixing Water: Water quality must be established on the same line like that for using reinforced concrete or prestressed concrete.Ĭhemical Admixtures: Superplasticizers are an essential component of SSC to provide necessary workability. 125-micron size are considered as FINES which contribute to the powder content.

The moisture content or absorption characteristics must be closely monitored as the quality of SSC will be sensitive to such changes. The grading must be uniform throughout the work. Aggregates should be of uniform quality with respect to shape and grading.įine aggregates can be natural or manufactured. Well graded cubical or rounded aggregates are desirable. Wherever possible size of aggregate higher than 20 mm could also be used. An aggregate of size 10 to 20 mm is desirable for structures having congested reinforcement.

Grade Of Concrete And Its Cement, Sand And Aggregate RatioĬement: Ordinary Portland Cement, 43 or 53 grade can be used.Īggregates: The maximum size of aggregate is generally limited to 20 mm.

Grades of Concrete as per IS 456 : 2000.

Concrete Cube Samples Taken for Different Volume.

What is Cement ? Difference b/w Cement & Lime.

Originally developed in Japan to offset a growing shortage of skilled labour, it has proved to be beneficial from the following points. Self Compacting Concrete has been described as “the most revolutionary development in concrete construction for several decades”. By the year 2000, the SSC has become popular in Japan for prefabricated products and ready mixed concrete. By the early 1990s, Japan has developed and used SSC that does not require vibration to achieve full compaction.

Recognizing the lack of uniformity and complete compaction of concrete by vibration, researchers at the University of Tokyo, Japan, started in the late 1980s to develop SSC.

Modern application of Self Compacting Concrete (SSC) is focused on high performance, better and more reliable and uniform quality. but the above examples of concrete are generally of lower strength and difficult to obtain consistent quality.

Mass concrete and shaft concrete can be successfully placed without vibration.

Self compacting concrete mix design excel sheet