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0904040477
0911016833

👉 INTERCON Construction Chemicals 

● Concrete Admixtures
● Bonding Agents
● Waterproofings
● Wall Putty, Prime Coat
● Concrete Repair Mortar
● Floor hardener, Epoxy
● Grout, Self-level mortar
● Quartz paint, Contextra
● Tile Adhesive & Tile Joint Fillers 
● Geotextiles and other construction chemicals and materials

☎️ Tel: 0961955555

🔹 Address 1: Signal road, around
Dinberwa Hospital

🔹 Addres 2: Wellosefer, Infront of
Dani Plaza

👉What Is Fly Ash

💫Fly Ash is a fine powder that comes from burning pulverized coal in power plants.
⏺It is a by-product collected from the flue gases.
⏺In construction, it is used as a supplementary cementitious material (SCM) — meaning it behaves like cement when mixed with water.

✅ What Fly Ash Does

⏺Fly ash contains silica (SiO₂) and alumina (Al₂O₃) that react with the lime (Ca(OH)₂) released from cement hydration and form additional calcium silicate hydrate (C-S-H) — the main strength-giving compound of concrete.

⭐ Importance of Fly Ash in Concrete

1️⃣ Improves Workability

⏺Fly ash particles are spherical and smooth → they act like tiny ball bearings, making fresh concrete easier to mix and place.
2️⃣ Increases Long-Term Strength

⏺The pozzolanic reaction continues for a long time and forms extra C-S-H → results in higher strength after 28 days and beyond.

3️⃣ Reduces Heat of Hydration

⏺Good for mass concrete (dams, thick foundations) because it minimizes temperature cracks.

4️⃣ Improves Durability

⏺Fly ash concrete is more resistant to:
Sulphate attack
Chloride penetration
Alkali-silica reaction (ASR)
Permeability (less water enters)

5️⃣ Reduces Cement Consumption

⏺Replacing 15–30% of cement with fly ash:
Saves cost
Makes concrete more sustainable
Reduces CO₂ emissions

6️⃣ Increases Workability Retention

⏺Slower setting → useful for hot weather concreting.

7️⃣ Improves Finish

⏺Makes surface smoother and reduces bleeding & segregation.

⚠️ Disadvantages (for full understanding)

❇️Slower early strength (first 3–7 days) compared to pure cement.

❇️Not suitable in very cold weather without special care.
Quality depends on source; low-quality fly ash reduces benefits.

🎯 Simple Definition

⏺Fly ash is a cement-like powder from coal power plants used in concrete to improve strength, durability, workability, and reduce cost.

@etconp

👉Claim on Additional floor Construction/Addition Works/:

🚧A contractor can generally claim for an additional floor construction requested by the client, but it depends on the contract agreement and the change management procedures in place.

🏷How it usually works?

1. Check the Original Contract

If the signed contract was for G+8, and now the client wants to extend to G+10, this is outside the original scope.

The contractor is not obligated to do it without a variation order (VO) or new contract agreement.

2. Variation / Change Order

Most contracts (FIDIC, PPA Ethiopia 2011, etc.) have clauses for variations.

The client (or Engineer/Consultant) issues a variation instruction in writing.

The contractor then submits a claim for:

Additional costs (materials, labor, equipment, subcontractors).

Time extension (because adding two floors increases duration).

3. Contractor’s Right to Claim

The contractor can claim if:

The client formally instructs the change.

The change affects cost and time.

Contractor must submit the claim within the time frame stated in the contract (often 28 days in FIDIC).

4. Evaluation and Approval

The Engineer/Consultant or Client evaluates the claim.

Once approved, the contract price and completion date are adjusted.

5. Risks if No Formal Agreement

If the contractor builds extra floors without written approval, payment disputes may arise.

The client may later refuse to pay, claiming it was not properly instructed.

In summary:
The contractor has the right to claim for additional floor construction requested by the client, but it must go through the formal variation/change order process, with clear documentation of cost and time impact.

@etconp

👉Load Distribution Two Way Slab To Beam

💫A two-way slab carries load in both directions (toward beams on all four sides) when the slab aspect ratio (longer side ÷ shorter side) is not large (rough rule: between about 0.5 and 2.0).

📌The slab load is transferred to beams as line loads (kN/m) — think of the slab as many narrow strips that hand their load down to the beams beneath them.

📌Common practical methods to determine the load carried by a particular beam:

🏷1. Tributary-area method (simple, conservative): each beam takes the load from the slab area that is closest to it.

🏷2. Equivalent strip / direct design method (used in code handbooks: ACI, BS, IS/BIS) — account for two-way action and give moment distribution coefficients.

🏷3. FE / plate analysis (most accurate) — used for complex geometry, openings, irregular supports.

@etconp

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@BemiCreatives

0902397727

👉Materials resist the five forces—compression, tension, bending, shear, and torsion—through various mechanisms related to their intrinsic properties, structure, and behavior under stress.

🚧Here’s a brief overview of how materials respond to each of these forces:

📚1. Compression

🔗Resistance Mechanism:

📌Material Properties: Materials with high compressive strength, such as concrete and metals, can withstand significant loads without deforming.

📌Structural Design: Columns and beams are designed to distribute compressive loads effectively. The cross-sectional area plays a crucial role in resisting compression; larger areas can support more load.

📌Elasticity and Plasticity: Under compression, materials may initially deform elastically (returning to original shape) and, if the load exceeds the yield strength, may undergo plastic deformation.

📚2. Tension

🔗Resistance Mechanism:

📌Material Properties: Materials with high tensile strength, like steel and certain polymers, can stretch significantly before breaking.

📌 Molecular Structure: The atomic arrangement and bonding in materials contribute to their ability to resist stretching. For example, metals have metallic bonds that allow for some degree of slip without failure.

📍Cross-sectional Area: Similar to compression, a larger cross-section can bear more tensile load.

📚3. Bending

🔗Resistance Mechanism:

📍Moment of Inertia: The geometric distribution of material about the neutral axis affects its resistance to bending. Materials with a higher moment of inertia (like I-beams) can resist bending more effectively.

📌 Material Composition: Different materials respond differently to bending; for example, wood has anisotropic properties (varying strength in different directions), while metals typically behave more isotropically.

📌 Yield Strength: When the bending moment exceeds the material's yield strength, it can lead to permanent deformation or failure.

📚4. Shear

🔗Resistance Mechanism:

📌Shear Strength: Materials possess a specific shear strength that defines how much shear stress they can withstand before failing.

📌 Friction: In some cases, friction between surfaces can help resist shear forces, especially in mechanical joints or fasteners.

📌Layering and Grain Orientation: In composite materials or wood, the orientation of fibers or layers can significantly affect shear resistance.

📚5. Torsion

🔗Resistance Mechanism:

📌Torsional Strength: Materials have a torsional strength that defines their ability to resist twisting forces. This is often characterized by the material's shear modulus.

📌Geometric Properties: The shape and cross-section of a shaft or beam influence its ability to resist torsion. Circular cross-sections are typically more effective at resisting torsional loads than square or rectangular ones.

📌Distribution of Stress: Torsion leads to shear stress distributed over the material; understanding how this stress is distributed helps in designing components that can withstand twisting without failure.

📍Summary

In summary, the resistance of materials to these forces is influenced by their physical and mechanical properties, structural design, and the way they are utilized in applications.

Engineers and material scientists consider these factors when selecting materials for specific applications to ensure safety and performance under various loading conditions.

@etconp

👉 INTERCON Construction Chemicals 

● Concrete Admixtures
● Bonding Agents
● Waterproofings
● Wall Putty, Prime Coat
● Concrete Repair Mortar
● Floor hardener, Epoxy
● Grout, Self-level mortar
● Quartz paint, Contextra
● Tile Adhesive & Tile Joint Fillers 
● Geotextiles and other construction chemicals and materials

☎️ Tel: 0961955555

🔹 Address 1: Signal road, around
      Dinberwa Hospital

🔹 Addres 2: Wellosefer, Infront of
     Dani Plaza