Description
Introduction CBR swell plate for CBR Swelling Test
The CBR Swell Plate plays a critical role in every California Bearing Ratio (CBR) Swelling Test. Geotechnical engineers place this plate on a compacted soil specimen inside the CBR mold to measure vertical swelling during the soaking period. Accurate swell measurement directly determines the load-bearing capacity and moisture susceptibility of subgrade soils used in road construction, airport runways, and foundation works.
Specifications CBR swell plate for CBR Swelling Test
| Parameter | Specification |
| Product Name | CBR Swell Plate |
| Also Known As | CBR Swelling Plate / Surcharge Plate |
| Standard | ASTM D1883 / AASHTO T193 / BS 1377 Part 4 |
| Material | Mild steel / Stainless steel (as specified) |
| Plate Diameter | 149.2 mm (fits standard 150 mm CBR mold) |
| Center Hole Diameter | 6.4 mm (for dial gauge stem) |
| Plate Thickness | 6 mm (approx.) |
| Perforation Pattern | Uniformly distributed holes for water ingress |
| Surface Finish | Smooth machined, anti-rust coated |
| Stem/Tripod Support | Compatible with adjustable tripod and dial gauge |
| Compatible Mold | Standard CBR mold – 150 mm internal diameter |
| Weight (approx.) | 0.8 – 1.2 kg |
| Surcharge Compatibility | Used with 2.27 kg (5 lb) surcharge annular weights |
| Test Type | Soaked / Unsoaked CBR Test |
| Usage | Swell measurement during 96-hour soaking period |
Key Features CBR swell plate for CBR Swelling Test
- Machined steel construction ensures consistent flatness and dimensional accuracy
- Perforated plate design allows uniform water absorption during soaking
- Center hole accommodates the dial gauge stem for direct swell measurement
- Matches standard CBR mold diameter (150 mm) for a perfect fit
- Smooth surface finish resists corrosion and extends service life
- Compatible with all standard CBR molds and surcharge weights
- Lightweight design allows easy handling and repositioning in the lab
- Complies with ASTM D1883, AASHTO T193, and BS 1377 Part 4
Applications CBR swell plate for CBR Swelling Test
- Road subgrade soil evaluation for highway and expressway projects
- Airport pavement design and runway subbase assessment
- Railway embankment and track bed soil investigation
- Dam and embankment fill material qualification testing
- Foundation soil characterization for residential and commercial buildings
- Research and quality control testing in geotechnical laboratories
- Soil stabilization effectiveness verification after treatment
Who Uses This
- Geotechnical engineers in soil testing laboratories
- Civil engineers working on road and highway design projects
- Materials testing technicians in government testing agencies
- Construction quality control inspectors on infrastructure projects
- University and polytechnic laboratory instructors and students
- Consulting firms conducting site investigation studies
- Bangladesh Roads and Highways Department (RHD) testing units
- Local Government Engineering Department (LGED) field teams
Frequently Asked Questions CBR swell plate for CBR Swelling Test
Q1. What is a CBR Swell Plate used for? A CBR Swell Plate sits on the surface of a compacted soil specimen inside a CBR mold. During the soaking phase of the CBR test, a dial gauge rests on the plate stem and records the vertical expansion (swelling) of the soil over 96 hours CBR swell plate for CBR Swelling Test.
Q2. Which standards govern the CBR Swelling Test? The test follows ASTM D1883, AASHTO T193, and BS 1377 Part 4. These standards specify the swell plate dimensions, surcharge weight, soaking duration, and dial gauge reading intervals.
Q3. Can I use one swell plate for multiple molds? Yes, one CBR Swell Plate fits any standard 150 mm internal diameter CBR mold. However, laboratories performing simultaneous multiple tests require one plate per mold CBR swell plate for CBR Swelling Test .
Q4. What surcharge weight works with this plate? The standard test requires a 2.27 kg (5 lb) annular surcharge weight placed on top of the swell plate to simulate pavement overburden during soaking CBR swell plate for CBR Swelling Test.
Q5. How do I measure swell using this plate? After placing the swell plate on the specimen, position an adjustable tripod and dial gauge above the mold. Set the gauge to zero at the start of soaking, then record readings at regular intervals over 96 hours to calculate percent swell CBR swell plate for CBR Swelling Test.
Q6. Does ASTZ BD supply matching tripods and dial gauges? Yes, ASTZ BD supplies the complete CBR swelling test accessory set including the swell plate, adjustable tripod, dial gauge, and surcharge weights as individual items or as a complete kit.
Why Buy from ASTZ BD CBR swell plate for CBR Swelling Test
- ASTZ BD stocks certified geotechnical testing equipment tested against ASTM and BS standards
- Local availability eliminates long import lead times for Bangladesh-based labs and projects
- Competitive pricing with transparent quotations for government tenders and private labs
- Experienced technical team provides pre-purchase guidance and after-sales support
- Fast delivery across Dhaka and nationwide shipping to project sites
- Bulk order discounts available for institutional buyers and government departments
- All products come with product documentation, standard references, and usage guidance
- Trusted by RHD, LGED, BUET, CUET, and leading consulting firms in Bangladesh
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