👉Concrete Slump Test

💫Detailed Procedure and Explanation

🏷The slump test is a widely used method to measure the workability (consistency and plasticity) of fresh concrete.

⏺It evaluates how easily concrete flows and indicates its water content, which affects strength and durability.

⏺The test is performed following ASTM C143 (American Standard) or IS 1199 (Indian Standard).

🚧1. Objective

⏺To determine the consistency and workability of freshly mixed concrete by measuring its slump value (vertical settlement of the concrete cone after removal of the slump cone mold).

🚧2. Apparatus Required

⏹Slump Cone (Abrams Cone):
- A frustum-shaped metallic mold with:
- Top Diameter: 10 cm (4 inches)
- Bottom Diameter: 20 cm (8 inches)
- Height: 30 cm (12 inches)
- Made of non-corrosive metal with smooth internal surfaces.

🔰Note: We Can Modify The Height and Diameter

⏹Tamping Rod (16 mm diameter, 60 cm long, rounded at one end)

⏹Measuring Scale or Ruler (for slump measurement)

⏹Base Plate (rigid, non-absorbent, and flat)

⏹Trowel (for filling and finishing)

🚧3. Step-by-Step Procedure

❇️Step 1: Preparation

- Clean the slump cone and base plate to remove old concrete or moisture.
- Place the cone on a flat, stable, and non-absorbent surface.
- Moisten the inner surface of the cone (to prevent sticking).

❇️Step 2: Filling the Cone

1. First Layer (1/3 of Cone Height - 10 cm):
- Fill the cone with fresh concrete.
- Rod 25 times evenly across the layer to compact.

2. Second Layer (2/3 of Cone Height - 20 cm):
- Fill the next layer.
- Rod 25 times, penetrating into the first layer.

3. Final Layer (Full Cone - 30 cm):
- Overfill slightly.
- Rod 25 times until fully compacted.

❇️Step 3: Finishing

- Remove excess concrete using a trowel to level the top.
- Clean any spilled concrete around the base.

❇️Step 4: Removing the Cone

- Hold the base firmly with your feet.
- Lift the cone vertically upwards slowly (5-10 seconds) without jerking.

❇️Step 5: Measuring the Slump

- Place the cone beside the slumped concrete.
- Place a straight edge (ruler) across the cone’s top.
- Measure the vertical drop (slump) from the bottom of the straight edge to the highest point of the slumped concrete.

❇️4. Types of Slump & Interpretation

🎲Slump Type| Description | Indication |

🏷True Slump

⏺Concrete subsides uniformly
⏺Ideal workability

🏷Shear Slump

⏺One side slides down more.
⏺Poor cohesion (needs remixing).

🏷Collapse Slump

⏺Concrete collapses completely.
⏺Too wet (high water content)

🏷Zero Slump
⏺No subsidence.
⏺Very stiff
⏺mix (low workability)

⭐️Ideal Slump Range:

⏺Normal RCC work: 50–100 mm
⏺Pavements & Mass Concrete: 25–50 mm
⏺Highly Reinforced Sections: 75–125 mm

🚧5. Factors Affecting Slump

- Water Content (↑ water = ↑ slump)
- Aggregate Size & Shape (rounded aggregates increase slump)
- Mix Proportions (cement-rich mixes have higher slump)
- Admixtures (plasticizers increase slump)
- Temperature (hot weather reduces slump)

🚧6. Advantages & Limitations

📍Advantages:

✔ Simple & quick test
✔ Low-cost equipment
✔ Good for field use

📍Limitations:

❌ Not suitable for very dry or very wet mixes
❌ Does not measure all workability aspects (like pumpability)
❌ Human error possible in lifting the cone

🚧7. Conclusion

⏺The slump test is a practical way to check concrete consistency before placement. A proper slump ensures good compaction, strength, and durability.

⏺If the slump is too high/low, adjustments in water or admixtures should be made.

@etconp

👉NEW VACANCY

💫Office Engineer

⏺Qty: 5

⏺Duty station: Project

📜Job Requirement

⏺Education: Bachelor's Degree in Civil Engineering or in a related field of study with relevant work experience
Work Experience: 4 years working experience

⚡️Dead line April 6

📩How to Apply

⏺Submit your non-returnable application and CV along with supporting documents in person to Head office located at around Senga tera in front of A.A.U School of Commerce on Biftu Adugna Building 6th floor or via Email: info@obmconstructionsc.com.

📞For Further information Contact Tel : +251115621294

@etconp

👉ይህ ገፅ ለማስታወቂያ ስራ ክፍት ነው

በ +251925446661 ይደውሉልን

ወይም @Philemona7 ይፃፉልን🙏

👉የ ስራ ቅጥር ማስታወቂያ

⭐️ሲኒየር የፕሮጀክት ኦፊሰር

🏷JOB REQUIREMENTS

⚡️Deadline Date : April 11, 2025

🔰የትምህርት ደረጀ የስራ ልምድ: የመጀመሪያ ዲግሪ በሲቪል ኢንጂነሪንግ፣ ኮንስትራክሽን ማኔጅመንት ወይም ተመሳሳይ የትምህርት ዝግጅት እና 6 አመት የስራ ልምድ ያለው/ላት ሆኖ ከተገለፀው የስራ ልምድ ውስጥ 2 አመት ሲኒየር የፕሮጀክት ኦፊሰር ሆኖ የሰራ/ች

📩HOW TO APPLY

⏺ከተጠቀሰው በላይ የትምህርትና የስራ ልምድ ያላቸው አመልካቾች ማመልከት ይችላሉ፤

⚡️የመመዝገቢያ ቀን ማስታወቂያ ከወጣበት ቀን ጀምሮ አምስት /5/ ተከታታይ የስራ ቀናት ይሆናል፤

💫አመልካቾች ለምዝገባ ሲቀርቡ የስራ ግብር የተከፈለበትና ደመወዝ የተጠቀሰበት የስራ ልምድ ማስረጃ፤ እንዲሁም የትምህርት ማስረጃቸውን ዋናውንና የማይመለስ ኮፒ ይዘው መቅረብ ይኖርባቸዋል፤ ለፈተና/ ለቃል ጥያቄ የሚቀርቡ አመልካቾችን ድርጅቱ በስልክ ያሳውቃል፤

📍የምዝገባ ቦታ: ጊዮን ሆቴል መግቢያ ጎን ናኒ ህንፃ 5ኛ ፎቅ የሰው ሀብት አስተዳደር ቢሮ ቁጥር 507

📞ለበለጠ መረጃ ፡- ስልክ ቁጥር 0115-54-99-69

ሚድሮክ ኢትዮጵያ ኃ/የተ/የግ/ማ

@etconp

👉NEW VACANCY

💫CIVIL ENGINEER I

⏺Total Years Experience :0 (Zero Experience)

⚡️Deadline Date : April 17, 2025

⏺Required Educational Level: BSc

⏺Field of Study: Civil Engineering Or COTM

⏺Terms of Employment: Contract Basis for 3 months

⏺Nº of Workers:4

⏺Salary:12,237

📍Place of Work: Addis Ababa

🔰HOW TO APPLY

⏺Applicants who fulfill the aforementioned requirements are advised to submit their
non-returnable documents within 10 working days from the date of the announcement to the Human Resource Management and Development Team Room Nº 108 at the Sectors Office.
❇️Ethiopia Engineering Corporation Building and Urban Sector Or The Previous Ethiopian Construction Design & Supervision Works Corporation/
/Building and Urban Design & Supervision Works Sector/

📩P.O. Box 40036
📞Tel. 0114420800
📍Next to Nifas Silk TVET College , Addis Ababa

Ethiopian Engineering Corporation - EEC

@etconp

👉NEW VACANCY

💫QUANTITY SURVEYOR

⏺Total Years Experience: 3-4

⚡️Deadline Date : April 14, 2025

🏷JOB REQUIREMENTS

⭐️ተፈላጊ የሥራ ልምድ: ከታወቀ ዩኒቨርስቲ/ኮሌጅ በሲቪል ምህንድስና ወይም በኮንስትራክሽን ማኔጅመንት ወይም በተዘማጅ የትምህርት መስክ የማስተርስ ዲግሪ ወይም የመጀመሪያ ዲግሪ ያለው/ያላት፣ መሰረታዊ የኮምፒዩተር አጠቃቀም ችሎታ እንዲሁም ከስራው ጋር የሚሄዱ ሶፍት ዌሮችን መጠቀም የሚችል/የምትችል በኘሮጀክት ሶፍት ዌር አጠቃቀም የሰራ/የሰራች ቢሆን ይመረጣል፡፡

▶️ለማስተርስ በሙያው 3 ዓመት ለመጀመሪያ ዲግሪ 4 ዓመትና ከዚያ በላይ የሥራ ልምድ ያለው/ያላት

⏺ብዛት:1

📍የሥራ ቦታ፡ ቦሌ አትላስ ዋሽንግተን ሆቴል ፊት ለፊት ዘ ኘሌስ ሌግዠሪ ሊቪንግ

📩HOW TO APPLY

⏺ከዚህ በላይ የተጠቀሱትን መመዘኛ የምታሟሉ አመልካቾች የትምህርትና የሥራ ልምድ ማስረጃችሁን ዋናውን ከማይመለስ ፎቶ ኮፒ ጋር በመያዝ
ይህ ማስታወቂያ ከወጣበት ቀን ጀምሮ 7 (ሰባት) ተከታታይ የሥራ ቀናት ውስጥ ቦሌ አትላስ ዋሽንግተን ሆቴል ፊት ለፊት ራካን የገበያ ማዕከል አጠገብ ዘ ኘሌስ ሌግዠሪ ሊቪንግ በሚገኘው የድርጅታችን ቢሮ በግንባር በመቅረብ ወይም hr@theplaceluxuryliving.com በመላክ መመዝገብ የምትችሉ መሆኑን እናስታውቃለን፡፡

📞ለተጨማሪ ማብራሪያ በስልክ 0116-68-42-68/0974-386776 ይደውሉ፡፡

@etconp

👉JOB VACANCY

🏷ENGINEERING PROCUREMENT OFFICER III

🌟JOB REQUIREMENTS

⏺Total Years Experience:2

⚡️Deadline Date : April 14, 2025

❇️ተፈላጊ ችሎታ: M.Sc./B.Sc. Degree Civil/Electrical Engineering/construction management or
related

⏺የሥራ ልምድ: 2/4 Years of Relevant Experience

⏺ብዛት: 2

📜ማሳሰቢያ

⏺አመልካቾች ይህ ማስታወቂያ በጋዜጣ ከወጣበት ቀን ጀምሮ ባሉት 7/ሰባት/ ተከታታይ የሥራ ቀናት ውስጥ መሻለኪያ ሸዋ ዳቦ ፊት ለፊት ወይም
የድሮ አራተኛ ክፍለ ጦር በሚገኘው የኮርፖሬሽኑ ዋና መ/ቤት የሰው ኃብት ልማት ቢሮ ሲቪ የትምህርትና የሥራ ልምድ ማስረጃችሁን ዋናውን እና የማይመለስ ኮፒ በመያዝ መመዝገብ የምትችሉ መሆኑን እየገለፅን ከግል ድርጅት የተገኘ የሥራ ልምድ ተቀባይነት የሚኖረው ግብር መክፈላችሁን የሚገልፅ ደብዳቤ ከገቢዎች ቅርንጫፍ ቢሮ ስታቀረብ መሆኑን እናሳውቃለን፡፡

የኢትዮጵያ የምድር ባቡር ኮርፖሬሽን ስልክ

📞ስልክ ቁጥር 011-470-20-51/011-470-29-94

@etconp

👉NEW VACANCY
💫OFFICE ENGINEER III

⚡️Deadline Date : April 12, 2025

🚧Qualification: Msc, Bsc, AD,CD/10+3,TD/10+2 in Civil, Hydraulic/Irrigation Engineering,
water supply & Environmental Engineering, COTM & related field with minimum experience of 3,4,6,8,9 years on similar position

⏺Qty: 2

▶️Fluency in Speaking, Reading, and Writing Afan Oromo is mandatory

❇️Salary: 18,260 ETB

📍Place of Work: Project Site

📩HOW TO APPLY

⏺Priority will be given for internal applicants who fulfills the required measures and have
interest to work on proposed positions.

⏺Applicants who fulfill the above mentioned criteria can apply in person having the original of Curriculum Vitae and other credentials at our Office located at Finfinne Lebu (Musika Sefer) in the building located in front of Commercial Bank of Ethiopia (Ertu Branch), 5 Floor up to April 12, 2025 GC at working hour.

WALABU CONSTRUCTION SC

@etconp

👉NEW VACANCY

💫Junior Design BIM Modeler

🏷Bachelor's Degree in Architecture and Design or in a related field of study with relevant work experience

📜Duties & Responsibilites:

- Provide CAD drafting/BIM modeling and design support.
- Coordinate and manage Revit models. 
- Create Revit families and CAD blocks. 
- Obtain work assignments of either specific design elements or CAD drafting from project managers. 
- Use checklists set-up for quality control on each project and submit work according to deadlines.
- Provide an accurate accounting of time spent on projects with descriptions for each time entry on a weekly basis.

▶️Quanitity Required: 3

⏺Minimum Years Of Experience: #0_years
⏺Maximum Years Of Experience: #3_years

⚡️Deadline: April 17, 2025

🌟Use Vacancy Code Design/Hahu /001/2025

📩How To Apply: Apply using the provided link below👇

https://forms.office.com/Pages/ResponsePage.aspx?id=fbibbAsHyk2HrMuCOdJR7l_tOeSslK1NsGRsQb8bHJdURUg0Q1JGN1VVNUs0MlNZSUFDRzFGVFk1My4u

@etconp