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A Digital CTM (Compression Testing Machine) is used to determine the compressive strength of concrete cube and cylinder specimens per IS 516:1959 and IS 14858:2000 — the most fundamental test in civil engineering quality control. CTM full form = Compression Testing Machine. Available in 1000 kN, 2000 kN, and 3000 kN capacities, digital CTMs display load digitally with automatic peak hold and data output. Mandatory for every concrete QC lab, RMC plant, material testing company, and NABL-accredited laboratory. JS Civil Lab Solutions supplies digital CTMs with auto-ranging, calibration certificate, and AMC. Call +91 93596 24761 for pricing.
CTM stands for Compression Testing Machine — the instrument used to crush concrete cubes and cylinders to determine their compressive strength. In civil engineering, CTM is the most commonly used abbreviation in laboratory reports, QC documentation, NHAI project specifications, and purchase orders. The digital CTM has largely replaced analog (dial gauge) CTMs in modern laboratories for its accuracy, data storage, and auto-peak detection.
JS Civil Lab Solutions manufactures and supplies digital compression testing machines (CTMs) from 1000 kN to 3000 kN for concrete testing, cement testing, and paving material testing across India.
A compression testing machine for concrete applies a controlled compressive load to a concrete cube or cylinder specimen at a specified loading rate until the specimen fails. The peak load at failure is recorded, and the compressive strength is calculated as Load / Area. Per IS 516:1959, standard cube size is 150mm × 150mm × 150mm, tested at 7 days and 28 days after casting.
| Feature | Digital CTM | Analog CTM |
|---|---|---|
| Display | Digital LCD — 0.1 kN resolution | Dial gauge — 2 kN divisions |
| Peak Hold | Automatic | Manual (drag pointer) |
| Data Output | USB / printer for test reports | None — manual recording |
| NABL Acceptance | Preferred / required for new labs | Accepted if within calibration |
| Parameter | Specification |
|---|---|
| Capacity | 1000 kN / 2000 kN / 3000 kN (model options) |
| Platen Size | 200×200 mm (1000 kN) / 250×250 mm (2000/3000 kN) |
| Resolution | 0.1 kN (digital) |
| Accuracy | ±1% of indicated load |
| Display | Digital with peak hold and data output |
| Standard | IS 516, IS 14858, ASTM C39, BS EN 12390-4 |
JS Civil Lab Solutions manufactures and supplies digital compression testing machines (CTMs) from our factory in Vasai (E), Maharashtra.
For CTM price in India, capacity recommendation, and delivery schedule, call +91 93596 24761 or email [email protected].
IS, ASTM, ISO, BS & EN compliant instruments. NABL-aligned calibration certificates on request.
Our engineers specify the right instrument for your test standard, lab setup and budget.
Annual maintenance contracts, on-site calibration and installation. Lifetime technical support.
Fast, safe dispatch from our Vasai warehouse. Instruments packed to transit standards.
Vasai-based ISO 9001:2015 certified manufacturer and supplier of precision testing equipment for civil engineering, NDT, pharmaceutical and paper industries. Our instruments are trusted by government testing laboratories, NABL-accredited facilities, infrastructure contractors and research institutions across India. Learn about us →
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