Description
Beam Mold 100x100x400mm Price in Bangladesh
The Beam Mold 100x100x400mm Price in Bangladesh reflects a purpose-built flexural testing instrument, and astzbd.com stocks a genuine mold designed for molding and curing Portland cement concrete test beams. If your lab runs flexural strength testing alongside standard compressive strength work, this beam mold gives you the correct specimen shape for evaluating how concrete performs under bending load rather than direct compression.
Beam Mold 100x100x400mm Full Specification
| Category | Parameter | Specification |
|---|---|---|
| Product | Type | Concrete Flexural Test Beam Mold |
| Dimensions | Size | 100mm x 100mm x 400mm |
| Application | Use Case | Flexural strength testing of Portland cement concrete |
| Compliance | Reference Standard | ASTM C31 procedure for molding and curing flexural test beams |
| Accessory | Tamping Rod | ⅝ in (16.0 mm) diameter round steel rod, ~24 in (610 mm) length, hemispherical tip |
| Accessory | Mallet | Rubber or rawhide head, 1.25 ± 0.50 lb (0.57 ± 0.23 kg) |
| Compaction | Vibration Method (if used) | Compatible with vibrators rated ~7,000 VPM, ¾ in to 1½ in (19.0–38.1 mm) diameter |
Beam Mold Overview – Flexural Strength Testing for Concrete
A beam mold shapes fresh concrete into a rectangular specimen specifically designed for flexural (bending) strength testing, unlike cube or cylinder molds which test compressive strength through direct axial load. This method covers the procedures for molding and curing Portland cement concrete flexural test beams, giving engineers a standardized way to evaluate how a concrete mix resists cracking under bending stress — a critical property for pavements, slabs, and structural elements that experience bending loads in service.
What Is a Beam Mold Used For in Concrete Testing?
Flexural Strength Testing Application
Flexural testing measures the modulus of rupture — essentially how much bending stress a concrete beam can withstand before cracking — which matters significantly for pavement design, bridge decks, and any structural element subjected to bending rather than pure compression.
Why Compaction Method Matters
Whether compacted manually with a tamping rod or mechanically with a vibrator, proper consolidation removes trapped air voids from the beam specimen, since any air pocket weakens the specimen at exactly the point it’s meant to represent real-world concrete performance.
Beam Mold Key Features
Precise 100x100x400mm Dimensions
Consistent internal dimensions ensure every cast beam specimen has the same cross-sectional area, which is essential since flexural strength calculations depend directly on accurate beam geometry.
Compatible Tamping Rod Specification
A ⅝ in (16.0 mm) diameter rod with a hemispherical tip, roughly 610mm long, matches the compaction method specified for manual consolidation of flexural test beams.
Mallet-Compatible Design
The mold’s construction accommodates gentle mallet tapping along the sides during and after rodding, helping close any voids left by the tamping process before the concrete sets.
Compatible with Mechanical Vibration
For labs preferring mechanical compaction, the mold works with vibrators rated around 7,000 vibrations per minute, offering a faster, more consistent alternative to manual rodding for larger testing volumes.
Beam Mold vs Cube/Cylinder Mold – Which Specimen Type Do You Need?
| Feature | Beam Mold (100x100x400mm) | Cube/Cylinder Mold |
|---|---|---|
| Test Type | Flexural (bending) strength | Compressive (axial) strength |
| Specimen Shape | Rectangular beam | Cube or cylinder |
| Common Application | Pavements, slabs, bridge decks | General structural concrete elements |
| Loading Method | Applied at third points or center point | Applied axially, straight down |
If your project specification calls for modulus of rupture data specifically, the beam mold is the correct choice — compressive strength results from cube or cylinder molds cannot substitute for flexural testing requirements. For general compressive strength verification, our Concrete Cube Mould 150mm or 4″x8″ Concrete Cylinder Mold remain the standard tools.
Beam Mold in Bangladesh 100x100x400mm Price
The Beam Mold 100x100x400mm Price in Bangladesh is available at astzbd.com — contact astzbd.com directly for current pricing and stock availability.
What Affects the Price
Mold size, wall thickness, and included accessories (tamping rod, base plate quality) all factor into price — a properly manufactured beam mold with accurate internal dimensions costs more to produce than a lightweight, less precise alternative.
Why Buy Genuine Beam Molds from astzbd.com
astzbd.com stocks genuine beam molds with verified dimensional accuracy, protecting your flexural test results from the inconsistent cross-sectional geometry that unverified alternatives can introduce.
Who Should Buy a Beam Mold?
Highway & Pavement Engineers
Flexural strength data directly informs pavement thickness design, making accurate beam testing essential for road and highway construction quality control.
RMC Quality Control Teams
Concrete suppliers serving pavement or slab projects need beam molds to verify their mix meets flexural strength specifications alongside standard compressive testing.
University Civil Engineering Labs
Teaching labs use beam molds to demonstrate the difference between compressive and flexural failure modes, giving students hands-on exposure to both testing methods.
Structural Testing Laboratories
Independent testing labs offering comprehensive concrete evaluation services need beam molds to provide flexural data alongside compressive strength reports.
How to Use a Beam Mold – Casting & Curing Guide
- Clean the mold thoroughly and apply a light coat of mould oil to internal surfaces
- Assemble the mold securely, ensuring all joints are tight to prevent leakage
- Pour concrete in layers, compacting each layer with the tamping rod or mechanical vibrator
- Tap the sides gently with a mallet to close any surface voids left by compaction
- Strike off the top surface level with the mold edge
- Allow initial curing before demoulding, then cure in a water tank for the required testing period
Beam Mold Maintenance & Care Tips
Clean the mold immediately after each use to prevent cured concrete residue from affecting future casts, apply mould oil before every casting cycle to ease demoulding, and store the tamping rod and mallet alongside the mold to keep the full testing kit organized. Periodically check that the mold’s internal dimensions remain accurate, since repeated use and cleaning can gradually affect surface precision over time.
Beam Mold FAQ
What is a beam mold used for in concrete testing?
A beam mold shapes concrete into a rectangular specimen used for flexural strength testing, measuring how much bending stress the concrete can withstand before cracking.
What size is the beam mold?
This beam mold produces specimens at 100mm x 100mm x 400mm, suited for standard flexural strength testing procedures.
What tamping rod specification is used for beam mold compaction?
A ⅝ in (16.0 mm) diameter round steel rod with a hemispherical tip, approximately 24 in (610 mm) long, is used for manual compaction of beam specimens.
Can a beam mold be compacted with a vibrator instead of manual rodding?
Yes, the mold is compatible with vibrators rated around 7,000 vibrations per minute, offering a faster mechanical alternative to manual tamping.
What’s the difference between a beam mold and a cube or cylinder mold?
A beam mold tests flexural (bending) strength using a rectangular specimen, while cube and cylinder molds test compressive (axial) strength using square or cylindrical specimens.
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