Concrete

Si Shen

Mar 13, 20232 min read

Creep, stress relaxation and shrinkage

Creep, stress relaxation and shrinkage are different concepts but easily confused

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Si Shen

Nov 11, 20212 min read

Plain concrete - how is it different

there is a different set of design rules for plain concrete

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Si Shen

Jul 19, 20214 min read

How reinforced concrete degrade

The principle of durability design is to slow down the damage process sufficiently so that the reinforced concrete sustains the damage

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Plastic analysis of reinforced concrete – plastic hinge, moment-curvature and moment-stiffness

Si Shen

May 18, 20214 min read

Plastic analysis of reinforced concrete – plastic hinge, moment-curvature and moment-stiffness

Utilising plastic hinges can tap out fuller potential of the structure and achieve an economic design

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Sprayed concrete – what’s special about it?

Si Shen

May 2, 20214 min read

Sprayed concrete – what’s special about it?

This post is a study note based on various sources rather than professional advice, and may not be reflective of the most up-to-date...

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Si Shen

Mar 25, 20213 min read

Concrete behaviour in tension (1)

Taking concrete as linear-elastic in both compression and tension is like treating it as metal and can lead to over-dosage of reinforcement.

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Disadvantages of large diameter reinforcement

Si Shen

Jan 10, 20213 min read

Disadvantages of large diameter reinforcement

the designer must bear in mind the downside of large diameter reinforcement, which is explained in this blog post.

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Fire engineering for concrete structures

Si Shen

Dec 27, 20204 min read

Fire engineering for concrete structures

This blog post outlines the overall fire engineering approach and touches on some basic principles.

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Construction quality control and tolerances

Si Shen

Oct 31, 20202 min read

Construction quality control and tolerances

The quality control measures put into place are essentially mitigation measures to deal with the risk of failure of compliance to the design

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What structural engineers need to know about waterproofing membrane

Si Shen

Aug 26, 20201 min read

What structural engineers need to know about waterproofing membrane

the membrane is a delicate thing and requires a lot of careful detailing and handling.

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Si Shen

Jun 30, 20202 min read

How to specify concrete cover

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Practical durability design for concrete

Si Shen

Mar 6, 20202 min read

Practical durability design for concrete

summarises how concrete deteriorate in plain language and practical measures to make it durable.

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Si Shen

Jan 28, 20203 min read

Reliability

Reliability is the consistency in performance. This is typically a much desired thing generally in life

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Time-dependent behaviour of structures (3) – strength of concrete

Si Shen

Jan 8, 20202 min read

Time-dependent behaviour of structures (3) – strength of concrete

Have you ever wondered, why have we chosen 28 days strength as a basis for concrete design? This blog post answers this question and...

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Si Shen

Dec 14, 20193 min read

Universal engineering principles

I believe it is essential for engineers to develop the habit of zooming out from their routine designs and re-think at a higher level of...

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Time-dependent behaviour of structures (2) – More on creep and shrinkage?

Si Shen

Dec 3, 20193 min read

Time-dependent behaviour of structures (2) – More on creep and shrinkage?

More details on creep and shrinkage

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Time-dependent behaviour of structures (1) – shrinkage and creep

Si Shen

Nov 24, 20193 min read

Time-dependent behaviour of structures (1) – shrinkage and creep

Creep and shrinkage are two long-term properties of concrete. This blog post help designers gain a deeper understanding of both

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A step-by-step anatomy of concrete stress-strain curve (2)

Si Shen

Aug 4, 20192 min read

A step-by-step anatomy of concrete stress-strain curve (2)

this one goes on further to touch on the stiffness of concrete and the simplified relationships for cross-sectional design.

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A step-by-step anatomy of concrete stress-strain curve (1)

Si Shen

Jul 18, 20194 min read

A step-by-step anatomy of concrete stress-strain curve (1)

This blog post aims to have a step-by-step anatomy of the stress-strain curve of concrete and clarify every detail and assumption

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A journey of designing ‘self-healing’ concrete

Si Shen

May 6, 20194 min read

A journey of designing ‘self-healing’ concrete

All concrete naturally cracks, regardless of whether it is desirable or not, and regardless of measures that you may choose to adopt, in...

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The Si-Eng

Si's civil engineering blog
All original by Si Shen.

All posts are personal opinions only.