The laboratory compacted asphalt mixture density tester is an important instrument for testing the bulk density and related volumetric parameters of compacted specimens. It can assist in engineering quality control, mix design, and evaluation of compaction effects.

Compacted asphalt mixture density tester

Model:TDMD-7050

I.Product Introduction

The compacted asphalt mixture density tester is primarily designed based on T 0705-2011"Test Method for Compacted Asphalt Mixture Density(Surface Dry Method)"in the People's Republic of China Transportation Industry Standard JTG E20-2011"Test Procedures for Asphalt and Asphalt Mixtures in Highway Engineering".It also considers the relevant technical requirements of T 0706-2011"Test Method for Compacted Asphalt Mixture Density(Weight Method in Water)"and T 0707-2011"Test Method for Compacted Asphalt Mixture Density(Wax Sealing Method)",and references ASTM D2726/D2726M-21 Standard Test Method for Bulk Specific Gravity and Density of Non-Absorptive Compacted Asphalt Mixtures".It is suitable for laboratory determination of the bulk density and related volumetric parameters of compacted asphalt mixtures.

II.This instrument is suitable for:

1.Determining the bulk relative density and bulk density of various asphalt mixture specimens with a water absorption rate not exceeding 2%using the surface-dry method,according to standard T 0705.

2.Determining the apparent relative density or apparent density of dense asphalt mixture specimens with a water absorption rate less than 0.5%using the water-gravimetric method,according to standard T 0706.

3.According to standard T 0707,determine the bulk relative density and bulk density of asphalt concrete or asphalt macadam mixture specimens with a water absorption rate greater than 2%using the wax sealing method.

4.The balance configured in this instrument can also be used to weigh the air mass of dried specimens according to the requirements specified in standard T 0708,and then calculate the bulk relative density and bulk density of the specimens determined by the volumetric method.

III.Technical Features

1.This instrument is multi-functional,simultaneously meeting the requirements for sample weighing in the People's Republic of China industry standard JTG E20-2011"Test Procedures for Asphalt and Asphalt Mixtures in Highway Engineering"using the surface-dry method,underwater weighing method,wax-sealing method,and volumetric method,and thus calculating the corresponding density or relative density.

2.This instrument uses a microcomputer to control the water bath temperature,making it convenient,simple,and reliable to operate.

3.The electrical control box of this instrument adopts a detachable structure,and the electrical control box is connected to the circuits for water bath temperature control,water tank level control,and water bath circulation stirring through aviation plugs and sockets.

4.This instrument uses a high-precision electronic balance,which has a large measurement range,high measurement accuracy,and stable and reliable operation.

5.The overflow water tank of this instrument is made of stainless steel,which is durable,easy to clean,and can automatically replenish and stabilize the water level in the working water tank,making it easy to operate.

6.This instrument employs an electric lifting mechanism with a new type of push-rod motor,ensuring smooth operation and low noise.This effectively reduces the workload of laboratory technicians.

7.The instrument's platform is made of natural marble,which is both aesthetically pleasing and practical,providing a stable working platform for the electronic balance.

IV.Technical Parameters

1.Effective water tank volume:83L;

2.Refrigeration compressor power:1/4 horsepower;

3.Electric heating element power:1.3kW;

4.Circulating water pump flow rate:10L/min;

5.Electronic balance

Maximum weighing capacity:15kg;

Weighing sensitivity:0.1g;

6.Water bath temperature control accuracy:(25±0.5)℃;

7.Operating power supply:AC(220±10%)V,50Hz;

8.Total power consumption:Not exceeding 1600W;

9.Dimensions:930mm×750mm×1150mm(Length×Width×Height(including balance))