Description

Introduction Aggregate Crushing Value Tester

The aggregate crushing value tester from astzbd measures how coarse aggregate resists crushing under steady load. Engineers use this ACV test apparatus to judge aggregate strength for roads and concrete. Moreover, the set includes a 150 mm steel cylinder, a plunger, a base plate and a tamping rod. Technicians fill the cylinder in three layers and tamp each layer 25 times. A compression testing machine then applies the load through the plunger. In addition, the hardened steel parts keep their shape after repeated tests. The apparatus follows IS 2386 Part 4 and BS 812 test methods. Labs also weigh the crushed fines to calculate the result. Aggregate Crushing Value Tester Aggregate Crushing Value Tester

Specifications Aggregate Crushing Value Tester

Parameter	Specification
Steel Cylinder Diameter	150 mm (15 cm)
Plunger Diameter	148 mm (14.8 cm)
Cylindrical Measure Diameter	115 mm (11.5 cm)
Cylindrical Measure Height	180 mm (18 cm)
Tamping Rod Diameter	16 mm
Tamping Rod Length	450–600 mm (45–60 cm)
Applied Test Load	400 kN (40 tonnes)
Load Application Duration	10 minutes (uniform rate)
Aggregate Sample Size	Passing 12.5 mm IS sieve, retained on 10 mm IS sieve
Sieve Sizes Required	12.5 mm, 10 mm, 2.36 mm IS Sieves
Sample Conditioning Temp.	100–110°C for 4 hours (surface-dry condition)
Balance Capacity Required	3–5 kg, accurate to 1 gram
ACV Formula	ACV (%) = (W2 × 100) / (W1 − W)
Acceptable ACV Limit (Surface)	≤ 30% (surface courses)
Acceptable ACV Limit (Base)	≤ 45% (base courses)
Standard Compliance	IS 2386 Part IV:1963, BS 812-110, AS 1141.21
Finish	Powder-coated / Galvanised steel
Material	High-grade steel, heat-treated and ground

Key Features

1. 150 mm diameter open-ended steel cylinder with precision-machined interior walls for consistent sample confinement
2. 148 mm diameter hardened-steel plunger that transfers load uniformly across the aggregate surface without jamming
3. Robust square base plate that anchors the cylinder securely during the 400 kN compression cycle
4. 115 mm diameter × 180 mm height cylindrical measure for accurate sample-volume preparation
5. 16 mm diameter metal tamping rod (45–60 cm long, rounded end) for controlled layer-by-layer compaction
6. Powder-coated and galvanised finish on all components for corrosion resistance and long service life
7. Full compliance with IS 2386 Part IV:1963, BS 812-110, and AS 1141.21 test standards
8. Compatible with any 400 kN compression testing machine available in Bangladeshi labs
9. Heat-treated and ground before assembly for dimensional accuracy and repeatable results
10. Complete set supplied together — cylinder, plunger, base plate, cylindrical measure, and tamping rod

 

Applications

1. Road and highway pavement construction quality control in Bangladesh
2. Coarse aggregate strength assessment for concrete mix design
3. Bridge approach slab and structural concrete aggregate evaluation
4. Airport runway subbase and surface course aggregate testing
5. Quality inspection of stone chips, crushed stone, and gravel for construction
6. Railway ballast material assessment and acceptance testing
7. Pre-qualification of aggregate suppliers for government infrastructure contracts
8. Research and development in civil-engineering materials laboratories
9. Teaching demonstrations in BUET and polytechnic institute laboratories
10. Quarry and aggregate production plant quality-assurance testing Aggregate Crushing Value Tester

Who Uses This

1. Civil engineers and site quality-control managers on road and bridge projects
2. Government testing laboratories under LGED, RHD, and BRTC in Bangladesh
3. Private construction companies and pavement contractors
4. Aggregate quarries and stone-chip producers seeking product certification
5. University and polytechnic institute laboratories – BUET, KUET, RUET, CUET
6. Soil and material testing service companies providing third-party inspection
7. Ready-mix concrete plant quality-assurance teams
8. Research institutions studying pavement materials and durability Aggregate Crushing Value Tester
9. Project consultants verifying aggregate compliance before construction begins
10. International contractors and joint ventures working on Bangladesh infrastructure projects

Frequently Asked Questions (FAQ)

Q: What does the Aggregate Crushing Value Tester measure?

A: The Aggregate Crushing Value Tester measures the resistance of coarse aggregates to crushing under a gradually applied compressive load of 400 kN. It expresses the result as a percentage (ACV%) of the crushed material relative to the original sample weight. A lower ACV percentage indicates a stronger aggregate Aggregate Crushing Value Tester .

Q: Which standards does this apparatus comply with?

A: The apparatus complies with IS 2386 Part IV:1963 (Indian Standard, widely adopted in Bangladesh), BS 812-110 (British Standard), and AS 1141.21 (Australian Standard). These standards govern the design dimensions of the cylinder, plunger, tamping rod, and test procedure.

Q: What aggregate size does the ACV test use?

A: The standard test uses aggregates passing a 12.5 mm IS sieve and retained on a 10 mm IS sieve. The sample dries at 100–110°C for four hours, cools to room temperature, and then fills the cylinder in three equal layers Aggregate Crushing Value Tester .

Q: What compression testing machine does this apparatus require?

A: The ACV apparatus requires a separate compression testing machine capable of applying 400 kN (40 tonnes) at a uniform loading rate so the full load reaches in exactly 10 minutes. The ACV set itself is the mould and sample-preparation assembly — the compression machine applies the load Aggregate Crushing Value Tester.

Q: What is an acceptable ACV value for road construction in Bangladesh?

A: For surface courses (wearing layer), the ACV must not exceed 30%. For base and sub-base courses, the ACV must not exceed 45%. When ACV exceeds 30%, engineers should determine the Ten Percent Fines Value (TFV) for a more accurate strength assessment.

Why Buy from ASTZ Bangladesh

1. ASTZ Bangladesh stocks genuine, standards-compliant laboratory testing equipment with traceable specifications
2. Our technical team provides pre-sale consultation to help you select the correct apparatus for your project requirement
3. We supply fast delivery across all districts of Bangladesh including Dhaka, Chittagong, Sylhet, Rajshahi, and Khulna
4. ASTZ offers competitive pricing with transparent invoicing — no hidden charges
5. Our after-sales support team assists with installation verification and calibration guidance
6. We maintain a dedicated spare-parts inventory so your lab never faces prolonged downtime
7. ASTZ Bangladesh has years of experience serving government labs, universities, and private contractors across the country
8. All equipment ships with a quality-check certificate and manufacturer documentation
9. We accept flexible payment options suitable for institutional purchase orders and individual buyers
10. Our team speaks Bengali and English, ensuring clear communication throughout the purchasing process