1. Chemical analysis method: Separate the aluminium element from the sample by dissolving the concrete sample, and then use chemical reagents for quantitative determination. This method has high accuracy, but requires professional laboratory conditions and operating skills.

2、Spectral analysis methods: including atomic absorption spectrometry (AAS), inductively coupled plasma emission spectrometry (ICP-OES) and X-ray fluorescence spectrometry (XRF). These methods can directly measure the content of aluminium element in the sample, with fast and accurate characteristics, but need expensive instrumentation and professional technicians to operate.

*Atomic Absorption Spectrometry (AAS): quantitative analysis using the absorption of aluminium atoms at specific wavelengths of light.

*Inductively Coupled Plasma Emission Spectrometry (ICPES): quantitative analysis by exciting aluminium atoms in the sample and measuring the characteristic spectra emitted by them.

* X-ray fluorescence spectrometry: using X-ray irradiation of the sample, by measuring the fluorescence intensity emitted by the aluminium atoms after being excited to determine the aluminium content.

3. Sieving method: For lightweight concrete containing a high amount of aluminium powder, the aluminium powder particles can be separated from the concrete by sieving and weighed to calculate the aluminium powder content. This method is simple and fast, but the accuracy is relatively low, only for specific cases.

4, Microscope observation method: the use of microscope observation of concrete samples in the form of aluminium powder particles and distribution, combined with image processing technology for quantitative analysis. This method is applicable to the need to understand the distribution of aluminium powder in concrete.

5、Professional testing organisations: If you do not have the conditions to measure by yourself, you can send the samples to professional testing organisations for testing. These institutions usually have advanced equipment and professional technicians, and can provide accurate and reliable test results.