Concrete sinker block .
2

Question

Concrete sinker block .

arunmrao (Materials)

(OP)

29 Jun 21 18:32

This is my first posting in this forum . I am a Metallurgist and I have a RFQ for a concrete sinker block with bellmouth and lifting attachments.

A concrete block is to be cast with weight measuring upto 20700kgs ( pl see a image of the arrangement).

My concern is about the concrete density 3tons/cu.m . Literature states that density of mortar is 2.400tons/cu.m

Is there anyway we can achieve this requirement of 3tons/cu.m?

The only other requirement is load test 1.5X the calculated weight.

Thanks in anticipation.

SlideRuleEra (Structural) · Answer 1 · 2021-06-29 19:04:00

arunmrao - "Heavyweight" aggregate, such as steel or iron, can be substituted for stone aggregate used in typical concrete mixes. The 3 tons / m³ density you need is reasonable. Heavy concrete is used for radiation shielding and certain other special applications. Here is a brief description:
Heavyweight Aggregate

www.SlideRuleEra.net idea

arunmrao (Materials) · Answer 2 · 2021-06-29 19:30:59

Thanks SlideRule Era for the link. I was considering using steel scrap to increase the density. However, I was concerned if this would be considered as a composite mixture and land me into problems.

In the past we have cast heavy cast iron weights for offshore structures, lifting cranes etc. But I have no experience in making mortar blocks.

Thanks once again. I shall come back requesting for tips to cast sinker block without any cracks and achieving the weight.

hokie66 (Structural) · Answer 3 · 2021-07-10 09:56:34

2.4 to 2.5 tonnes per cubic metre is normal weight concrete. Can you just make the block larger?

arunmrao (Materials) · Answer 4 · 2021-07-10 18:12:09

Thanks, hokie. The customer insists on 3t/m3. I have offered my quote accepting the technical conditions. I shall come back for more assistance if my bid is accepted.

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Concrete sinker block .
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