Direct method cement hydration heat tester

Model:SN2025-AC004

I. Product Introduction

The SN2025-AC series direct method cement hydration heat tester is developed and manufactured by Hebei Tianqixingzi Inspection Equipment Co.,Ltd.,in accordance with GB/T12959-2024"Method for Determination of Cement Hydration Heat".

After system upgrades,this series of products offers simpler,more convenient,and more user-friendly fully automatic cement hydration heat testing.The equipment has undergone overall optimization,with multi-channel temperature sensors installed on the front of the water tank to ensure short circuits,fast temperature acquisition rates,and high sensitivity.Changes in heat valuesare collected in real time by the multi-channel acquisition system and transmitted to a computer.The software automatically calculates the total heat accumulated and dissipated within the calorimeter,yielding the hydration heat of cement after 3-7 days or 28 days(hydration heat results can also be viewed at any time).Independent operation and calculation of single-channel tests are also possible.

II. Applicable Standards

GB/T12959-2024 Determination of Heat of Hydration of Cement

EN196-9:2010 Quantitative Determination of Heat of Hydration–Semi-Adiabatic Method

SL/T 352-2020 Test Procedure for Hydraulic Concrete

JTG 3420—2020 Test Procedure for Cement and Cement Concrete in Highway Engineering

DL/T 5150-2017 Test Procedure for Hydraulic Concrete

JTS/T 236-2019 Technical Specification for Testing and Inspection of Concrete in Waterway Engineering,and other relevant standards.

III. Equipment Composition and Structure:

l Ultra-low Temperature Circulating Constant Temperature Water Bath

l Multi-channel Temperature Acquisition System

l Hydration Heat Analysis Software

IV. Selection Guide:

Cement Hydration Heat Tester (Direct Method) SN2025-AC004 (4 Channels)

Cement Hydration Heat Tester (Direct Method) SN2025-AC008 (8 Channels)

Cement Hydration Heat Tester (Direct Method) SN2025-AC012 (12 Channels)

Cement Hydration Heat Tester (Direct Method) SN2025-AC016 (16 Channels)

Customizable to meet customer requirements

V. Main Technical Specifications

1) Ultra-Low Temperature Circulating Constant Temperature Water Bath

l Number of Sample Holes: 0.8 wells (32-48 wells customizable)

l Control Method: Fully automatic computer control

l Heating Method: Heating tube heating

l Cooling Method: Compressor cooling

l Water Bath Temperature Range: 10～90℃ (customizable -40℃, adjustable)

l Accuracy: ±0.1℃ (customizable ±0.005℃)

l The water bath fixing ring is detachable, allowing it to be used as a curing tank or a constant temperature water bath.

2) Multi-channel Temperature Acquisition System

l Multi-channel temperature acquisition system: PT100 platinum resistance three-wire temperature sensor, short circuit, high sensitivity. (Similar sensors suffer from excessively long circuits, poor sensitivity, and low accuracy)

l Measurement Range: -50～150℃

l Resolution: ±0.001℃

l Accuracy: ±0.005℃

l Data Acquisition Speed: 1 second - 1 hour (arbitrarily settable)

l Features independent multi-point calibration function for each channel (consistent with the calibration function of the verification unit)

3) Hydration Heat Analysis Software

The analysis software allows setting hydration heat test parameters and automatically starts/stops data acquisition according to the program settings. During the test, it automatically calculates the test results data. Each channel can acquire and analyze data independently, and the interface can display the acquisition status and curves of each channel in real time.

The software features automatic temperature correction and has a 7-point calibration range. This system analysis software can be connected to any computer to prevent unexpected events such as laboratory power outages or computer malfunctions from stopping the experiment. The software automatically calculates the total heat accumulated and dissipated in the calorimeter to obtain the hydration heat of cement after 3-7 days or 28 days.