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Concrete constituents and mix design -- 2 -

You are required to answer all questions:

1) In concrete production, compaction has to be done properly to ensure the

concrete has the potential to achieve its design strength and of good qualify of

concrete. Explain the purpose of compaction and discuss the effects to the

concrete if the compaction were not carried out properly.

(500 words)

2) The use of recycled materials and secondary aggregate in the UK is increasing as

the construction industry seeks to become more sustainable. Building materials

such as concrete are a key resource for building a sustainable society and the

industry have a responsibility to protect the climate and secure the resources for

the future.

Below are some of the recycled materials that has been widely used in the

industry and others have been widely researched. They are:

I.) Recycled aggregate (RA)

III.) Recycled concrete aggregate (RCA)

For each of the selected item, describe, analyse and critically evaluate how of these

recycled materials affect the performance of concrete in (include diagrams, graphs

and tables to illustrate your work):

a) Fresh properties (workability, segregation, cohesiveness)

1000 words in total (500 words for each of the recycled materials)

b) Hardened properties (strength, durability, etc)

1000 words in total (500 words for each of the recycled materials)

Word processed on one side of A4 paper with 1.5 spacing and Ariel font of 12

Pages should be numbered

Present your word count after answering each question

Skills: Article Writing, Report Writing, Research, Research Writing, Scientific Research

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