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The Si-Eng
Si's civil engineering blog
All original by Si Shen.
All posts are personal opinions only.
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Si Shen
Mar 13, 20232 min read
Creep, stress relaxation and shrinkage
Creep, stress relaxation and shrinkage are different concepts but easily confused
522 views0 comments
Si Shen
Nov 11, 20212 min read
Plain concrete - how is it different
there is a different set of design rules for plain concrete
461 views2 comments
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
159 views0 comments
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
2,065 views1 comment
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...
83 views0 comments
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.
1,370 views0 comments
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.
519 views0 comments
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.
196 views0 comments
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
1,013 views0 comments
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.
250 views0 comments
Si Shen
Jun 30, 20202 min read
How to specify concrete cover
How to specify concrete cover
154 views0 comments
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.
82 views0 comments
Si Shen
Jan 28, 20203 min read
Reliability
Reliability is the consistency in performance. This is typically a much desired thing generally in life
40 views0 comments
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...
220 views0 comments
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...
202 views0 comments
Si Shen
Dec 3, 20193 min read
Time-dependent behaviour of structures (2) – More on creep and shrinkage?
More details on creep and shrinkage
139 views0 comments
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
448 views0 comments
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.
2,549 views0 comments
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
10,492 views0 comments
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...
347 views0 comments
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