What methods does the manufacturer of the rotary compactor use to test compaction degree?

What methods does the manufacturer of the rotary compactor use to test compaction degree?

The rotary compactor simulates the effect of vehicle traffic on road surfaces. As the asphalt mixture is compacted during rotation, this equipment has become indispensable today. So, what methods do rotary compactor manufacturers use to test compaction density?

What methods does the manufacturer of the rotary compactor use to test compaction degree?

1. Pit-digging and sand-dredging method

The commonly used test methods for detecting compaction are suitable for in-situ measurements of the density and degree of compaction of compacted layers of various materials, including air-entrained (or bottom) layers, gravel surfaces, and subgrades.

2. Kernel Density Estimation Method

This method is suitable for on-site measurement of the density and moisture content of subgrade or pavement materials using either the scattering method or the direct method with a nuclear densimeter, and for calculating the degree of compaction. The method can be applied to materials such as soil, crushed stone, soil-rock mixtures, asphalt mixtures, and unhardened cement concrete. After drilling holes, the direct transmission method is used for measurement, provided that the layer thickness does not exceed 20 centimeters. The density and moisture content of packaging materials can also be measured.

3. Ring Cutter Method

This method is suitable for determining the density of fine soils and inorganic binders, as well as stabilizing the density of fine soils.

4. Core drilling method

This method is suitable for detecting compacted asphalt pavements. By measuring the density of asphalt mixture cores extracted from boreholes, it evaluates the degree of compaction achieved during asphalt pavement construction.

5. Nuclear Density Gauge Method

This method is suitable for rapid on-site measurement of the density of asphalt mixtures in each layer of asphalt pavements and for calculating the degree of compaction.

How do rotary compaction tester manufacturers detect paving temperatures?

1. The insertion-type thermometer method involves carefully inserting an insertion-type thermometer halfway into the compacted layer of pavement mixture. Gently press down on the surrounding mixture next to the thermometer, and closely monitor the thermometer’s readings until the temperature no longer rises. Then, accurately read the temperature to the nearest degree. Immediately after completing the reading, withdraw the thermometer and reinsert it into the mixture at the next measurement point.

2. Non-invasive thermometers—Infrared thermometers—use non-invasive infrared thermometers to measure the temperature of individual surfaces. In such cases, the measured temperatures are typically used for self-inspection by the construction unit or for process control during construction. When taking temperature measurements, directly aim the thermometer at the surface of the asphalt mixture being tested and perform continuous measurements at least three times until the temperature differences among the three readings do not exceed 1 degree.

3. The infrared camera method uses an infrared camera to measure the surface temperature of a given area. In this context, the measured temperatures are typically used for process control during construction.

How does a rotary compactor analyze the market?

1. Market Size: By analyzing the consumption scale and year-on-year growth rate of the compressor industry over the past five years, we will assess the market potential and growth of the compressor industry and forecast the consumption scale growth trend for the next five years.

2. Product Structure: Classify compressor industry products from multiple perspectives, and present the consumption scale and proportion of compressors across different types, grades, regions, and applications. Conduct an in-depth investigation into the market capacity, demand characteristics, and key competitors of each product segment.

3. Market Distribution: Analyze the market distribution of the compressor industry based on users’ geographic distribution and purchasing power, and conduct in-depth investigations into key regional markets with large-scale consumption. This includes the region’s consumption size and share, demand characteristics, and demand trends.