Ünsal Temin Blog · Building Knowledge
Five decisions that shape concrete quality
The essentials that matter on site, from specification to curing.
Prepared with official and technical sources

Short answer
The essentials that matter on site, from specification to curing.
- Correct specified class
- Proper placing and vibration
- Consistent curing control
Quality begins in the decision chain
Concrete performance depends on more than the ordered class. Design, production, transport, placing and curing must all support the same quality objective.
Placing and curing make the unseen difference
Appropriate vibration reduces void risk, while correct curing limits early moisture loss. Weather, pour timing and surface protection belong in the site plan.
Control becomes stronger when it is recorded
Recording delivery tickets, samples, temperature, pour time and curing start makes the process traceable and helps identify issues earlier.
Preparation is completed before the concrete arrives
Formwork cleanliness, reinforcement and cover, service openings, pump position, access, vibrators and backup equipment should be verified before delivery. The team should understand the pour plan and know who responds to interruptions or changing weather.
A sample result does not tell the whole story
Standard samples help assess the potential of delivered concrete; in-place performance is also affected by transport, placing, consolidation, temperature and curing. Results should be interpreted by the authorised engineer alongside project criteria and site records.
Frequently asked questions
Can water be added to concrete on site?
Unauthorised changes to the mixture can affect strength and durability. Any adjustment must follow the specification and authorised technical control.
Why is curing so important?
Curing maintains early moisture and temperature conditions, supporting hydration and the development of strength and durability.
Is the 28-day sample result enough?
It is an important control, but in-place workmanship, records and project criteria must also be considered.
Sources & further reading
Content is prepared to be clear, practical and technically responsible. Project-specific decisions require assessment by an authorised professional.

