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New measuring system from Franz Ludwig GmbH optimizes concrete quality control directly in the truck mixer drum to increase precision and efficiency on the construction site. The quality of concrete is crucial for construction projects. Franz Ludwig GmbH, with almost half a century of experience in moisture measurement of bulk materials, has developed an innovative measuring system for truck mixer drums: the FL-Mobimic-Inspector. This system aims to precisely monitor concrete quality and thus minimize fluctuations, for example in water content, which can significantly affect concrete properties. It generates process-relevant data directly in the drum of the concrete truck mixer to ensure the high performance of concrete produced in precast or ready-mix concrete plants. Comprehensive Data for Optimal Concrete Consistency The FL-Mobimic-Inspector collects a variety of parameters relevant to concrete quality, including water content (optionally as w/c ratio or in l/m³), consistency, slump, temperature, drum rotation direction and speed, drum filling level, and even the amount of wash water in an empty mixing drum. Central positioning of

Modern digital measurement techniques from Ludwig Moisture Control enable precise and rapid moisture determination in bulk materials. Mobile, battery-powered devices deliver reliable results and optimize processes Precise Moisture Measurement as a Key to Quality The determination of moisture content in bulk materials and their raw ingredients is a critical factor for product quality and processability. Especially in highly automated modern process plants, the rapid and precise acquisition of moisture values is becoming increasingly important. Conventional measurement methods are often time-consuming and can yield inaccurate results with small sample sizes. Digital inspection techniques offer significant advantages: they provide accurate measurements within seconds and efficiently capture data for further processing. Mobile Technology for Practical Applications To meet the demands of practical use, Ludwig Moisture Control has developed a modern, mobile measuring device. The measuring probes are battery-powered and wireless, allowing for high flexibility in application. All measurement signals are digitally processed directly in the probe and sent via radio to end devices such

The new FL Mikro T2 water dosing device from Franz Ludwig GmbH optimizes moisture measurement and water dosing for more precise concrete production with low investment costs. Improved Production through Moisture Measurement In modern mixing plants, precise measurement, calculation, and dosing of water are crucial. This requires comprehensive know-how regarding production processes and technology. The FL Mikro T2 enables more accurate and consistent concrete production with manageable investment costs, especially when the mixing plant control system lacks specific expertise in measurement and control technology. Precise and repeatable consistency control remains the most important feature for effective concrete processing and is considered critical in the mixing process. Easy Integration and Robust Technology The replacement of existing systems with the FL Mikro T2 could be carried out within a few hours, without mechanical adjustments or changes to the communication with the control system. Commissioning, calibration, and personnel training were successfully completed during ongoing operations. The device was deliberately developed

The water-cement ratio is crucial for concrete surface brightness. Moisture variations in aggregates and mixing processes affect the color and brightness stability of bulk material concrete. The Role of Water-Cement Ratio in Concrete Brightness Differences in the water-cement ratio (w/c value) are the most frequent cause of color and brightness variations in concrete products. Efflorescence also contributes. Modern cements and additives may introduce additional influences. Pigments do not change their properties during concrete production and remain permanently bound to the binder. However, the binder itself changes its chemical structure through hydration, which affects concrete strength. The formation of fine structures leads to brightness, as seen in efflorescence. The higher the w/c value, the brighter the concrete surface. Influence of Moisture and Temperature on Surface Brightness In fresh concrete, water acts as a reactant for the hydration of the binder. Concrete does not simply dry out; rather, the water chemically reacts with hydraulic cement and additives. Higher temperatures lead to brighter concrete surfaces. The amount of water remaining

New sensor technology enables precise moisture and temperature measurement in bulk materials for sustainable concrete production, optimizing processes and reducing CO2 emissions. Eco-friendly thanks to precise sensor technology Concrete production faces the challenge of conserving natural resources and reducing CO2 emissions. One approach is the use of limestone powder or calcined clays as clinker substitutes. To efficiently process these new cements and additives and produce precisely differentiated concrete mixtures, adapted sensor technology is required. This technology records moisture and temperature at various points in the process chain. Particularly, the moisture content and temperature of individual raw materials such as cement, additives, and aggregates significantly influence concrete quality and must therefore be precisely monitored. Microwave moisture sensors for ingredients of concrete Moisture measurement is based on the dielectric method in the microwave range. The microwave moisture sensor is in direct contact with the measurement medium and penetrates at least 50 mm deep into the material. This allows for the detection

Quality complaints present an undesirable and unpredictable risk of additional effort and costs for both the customer and the producer, therefore it is fundamentally essential to inspect product thoroughly. It is fundamentally essential to inspect the produced goods for their assured properties such as haptics, dimensional stability, exact net weight, and more before shipping them to the customer. This is to prevent justified complaints regarding the quality of the goods. Quality complaints present an undesirable and unpredictable risk of additional effort and costs for both the customer and the producer. Moreover, they can harm a good customer relationship, which must be avoided at all costs. As the following reports explain, the moisture content of differentiated products can significantly impact product quality. 1. Moisture measurement after bagging of hygroscopic substances. In this application, the requirement was to precisely measure the moisture content of a hygroscopic granulate after the bagging process, through the closed plastic, textile fibers, or paper sack—essentially, sack by sack. If the moisture content of the hygroscopic granulate is too high,