2i Constructions

2i Query 04

ACI specifies a maximum fresh concrete temperature of 32°C, while Saudi Aramco standards allow up to 35°C. Exceeding the specified fresh concrete temperature limit may result in rejection of the concrete.

Case 1

If it is found that the fresh concrete temperature exceeds the maximum specified limit:

As a Quality Control Inspector, what actions would you take?

As a Construction Lead Engineer, how would you justify or address the situation to prevent the concrete from being rejected?

Case 2

If the same concrete is required to be utilized in order to accelerate work progress, meet project targets, and complete activities that are delaying subsequent work:

What actions would you take to deal with this situation?

How would you balance project schedule requirements with specification compliance and quality requirements?

Let's discuss the practical and technical approaches from both the Quality Control and Construction management perspectives. 🏗️🌡️📋

6 days ago | [YT] | 6

2i Constructions

Quiz.
If the concrete temperature is measured at 36°C against a project limit of 35°C, but slump, air content, and strength history are all acceptable, would you:


Share your reasoning based on specification compliance, engineering judgment, and project risk

6 days ago | [YT] | 2

2i Constructions

2i Query 02

For a concrete mix with a specified compressive strength of 35 MPa, both the 7-day laboratory-cured and field-cured cylinder test results have exceeded 150% of the specified strength.

However, the historical test data for the same mix design indicates that the 28-day compressive strength results are typically only 10% to 20% higher than the specified strength on average.

Considering this significant variation, please clarify:

1. Is it acceptable for the 7-day compressive strength results to exceed 150% of the specified strength while the 28-day results historically remain within 10% to 20% above the specified strength?
2. Could such unusually high early-age strengths indicate potential issues related to testing, curing conditions, batching, material variation, or sample identification?
3. Is any additional investigation, verification testing, or review of the mix design recommended under these circumstances?

Your guidance on the interpretation of these results and any applicable code requirements would be appreciated.

1 week ago | [YT] | 3

2i Constructions

2i Query 01.

The 7-day site-cured concrete cylinder compressive strength results are below 85% of the corresponding laboratory-cured cylinder strengths.

Laboratory-Cured Cylinders (7 Days):

- Cylinder 01: 44.5 MPa
- Cylinder 02: 47.0 MPa
- Average Strength: 45.75 MPa

Site-Cured Cylinders (7 Days):

- Cylinder 01: 34.6 MPa
- Cylinder 02: 36.3 MPa
- Average Strength: 35.45 MPa

The average site-cured strength is approximately 77.5% of the average laboratory-cured strength, which is below the minimum requirement of 85% specified in 09-SAMSS-097.

Please advise on the required corrective actions and whether additional investigation or testing is necessary.

1 week ago | [YT] | 4

2i Constructions

*السلام علیکم و رحمۃ اللہ و برکاتہ*

عید الاضحٰی مبارك 🌷🪻🌹

1 week ago | [YT] | 3

2i Constructions

Q114. Which statement is correct?

2 weeks ago | [YT] | 0

2i Constructions

Q113. Improper curing may result in:

2 weeks ago | [YT] | 0

2i Constructions

Q112. Slump testing is performed according to:

2 weeks ago | [YT] | 0

2i Constructions

Q111. Concrete (TM) Mixer agitation speed during transportation should normally be:

2 weeks ago | [YT] | 1

2i Constructions

Q110. Why is calibration of batching plant important?

1 month ago | [YT] | 6