BUILDING MATERIALS THERMAL ANALYSIS & CALORIMETRY SOLUTIONS • CEMENT, PLASTER, CONCRETE, RAW MATERIALS • • SETTINGS (HYDRATION) • • THERMAL BEHAVIOR OF RAW MATERIALS • • BUILDING MATERIAL PROP

YOUR CHALLENGES Cement, plaster and other building materials are essential in everyday life. Although some of them have been used for centuries to build enduring structures, their behavior is still not fully understood today. The constant search for improved building materials and for special cements for the consolidation of oil wells in the oil & gas industry leads to the development of new cementitious materials, formulations and additives. Thermal analysis and calorimetry provide critical insights into the manufacturing of cement powders, the hydration of the powder, and the final product...

THE KEP TECHNOLOGIES ADVANTAGE KEP Technologies is addressing it's offerings to the building materials market by making available the widest and most versatile choice of solutions. Now you can consult with one company, KEP Technologies, to address your challenges across the broadest number of building materials studies on the market. Each solution embodies our “Reimagine Material Characterization” value proposition by delivering the three core customer benefits of Experimental Control, Instrument Versatilty and Quality Results. EXPERIMENTAL CONTROL We believe solutions that provide these benefits...

THERMAL BEHAVIOR OF RAW MATERIALS INSTRUMENT CALVET PRO DSC HIGHEST HEAT MEASUREMENT ACCURACY Calvet 3D sensor based on thermocouples with Joule effect calibration. EXTERNAL COUPLING CAPABILITY Designed to increase your research options, including manometry, BET, gas analyzers, humidity controllers and gas panels. CONVENIENT INTERCHANGEABLE CRUCIBLES AND CELLS to perform even the most demanding experiments with one instrument : high pressure (500bar) and high vacuum (104 mbar) studies, pressure measurement and control, packed bed reactor experiments. Isothermal and temperature scanning (°C/min)...

APPLICATION THERMAL ANALYSIS OF MINERAL SALTS USED IN THE CEMENT INDUSTRY INTRODUCTION Cement is obtained from the baking of a mixture of clays and limestones in which silica is one of the main components. Mineral salts are numerous in the initial compound, and sometimes contain traces of nitrates. A controlled amount of gypsum can be added to the manufactured cement in order to retard its setting rate. The thermal behavior of the three different salts (silica, nitrate & gypsum) is investigated by DSC. • Samples : SiO2 (49 mg) CaSO4∙ 2H2O (49mg) Ca(NO3)2∙ H2O (59mg) • Crucible : Platinum (open)...

APPLICATION HEAT CAPACITY OF CRUDE CEMENT AND CLINKER INTRODUCTION Heat capacity is a very important thermodynamic parameter, when determining the heat balance of a reaction. The specific heats of the different components, before and after the reaction, have to be known in order to define the correct heating of the system. The heat capacity of crude cement and clinker is measured according to the stepwise method. An increment of temperature is scanned, and the calorimetric peak, corresponding to the sample heated is integrated, as shown below. • Samples : Crude cement Clinker • Mass : 450 mg...

THERMAL BEHAVIOR OF RAW MATERIALS INSTRUMENT THEMYS ACCURATE AND SENSITIVE ULTRA-HIGH TEMPERATURE heat flow measurement with Tri- Couple DTA technology ULTRA-HIGH TEMPERATURE CAPABILITY to 2400°C with a single furnace MODULAR ADAPTIONS ALLOWING TGA only, DTA only, TG-DTA, and TMA up to 2400°C, DSC only and TG-DSC up to 1750°C all in one instrument HIGH ACCURACY & VERSATILITY hang-down symmetrical beam balance, specifically designed for TGA applications EXTERNAL COUPLING CAPABILITY designed for evolved gas analyzers (FTIR, MS, GCMS, MSFTIR,or FTIR-GCMS) Isothermal and temperature scanning (°C/min)...

APPLICATIONS BAKING OF CRUDE PORTLAND CEMENT INTRODUCTION After preparation of the raw materials (lime, clay, marl,…) in proportions dependent on the process selected, paste, powder or granules are introduced into the rotary kiln so that the mixture may be gradually heated to the clinkerization temperature, that is to say to the temperature at which partial melting occurs, about 1450°C. Differential thermal analysis is used to simulate the conditions existing during cement manufacture and to characterize the physical and chemical processes which occur in the cement when it is heated to 1500°C....

APPLICATIONS ANALYSIS OF CEMENT SAMPLES BY THERMOGRAVIMETRY COUPLED WITH FTIR SPECTROMETRY INTRODUCTION The aim of this analysis is to identify the evolved gases from a cement sample by thermogravimetry coupled with FTIR spectrometry. Experiments were conducted on a THEMYS with the outlet of the balance connected to a Nicolet 380 IR spectrometer by a heated connection line (maximum at 200°C). At 22 min, we observe a decrease of the mass, two exothermic peaks and an increase of the IR intensity. Thanks to a library of results we can associate this mass variation to the loss of SO2. The cement...

THERMAL BEHAVIOR OF RAW MATERIALS INSTRUMENT CALVET DC IMPROVED HEAT CAPACITY AND HEAT MEASUREMENTS WITH THE CALVET DC • heat flux DSC up to 1600°C – for accurate heat capacity, heat, and glass transition measurements • drop calorimetry up to 1500°C – for accurate heat capacity, heat of dissolution and heat of formation measurements VARIETY OF ATMOSPHERE CONDITIONS possible with multiple carrier and reactive gas options CONVENIENCE AND ECONOMY with one instrument and furnace for TGA, TG-DSC, TGDTA, DSC, DTA, and TMA up to 1600°C MODULAR ADAPTATION ALLOWING TGA only, DTA only, TG-DTA up to 2000°C...

APPLICATION HEAT CONTENT OF CRUDE PORTLAND CEMENT INTRODUCTION The issue of power consumption is becoming increasingly important in many industries, particularly those that use high temperature furnaces. Therefore, it is important to be able to establish total or partial heat balances for any given system. The 1500°C calorimeter allows us to measure the heat which must be supplied to a system, for example to run clinkerization of crude Portland cement. The sample, thermostated at ambient temperature, is dropped into the calorimeter which has been stabilized at 1430°C. EXPERIMENT • Sample : Portland...