Calmetrix Cement and Concrete Calorimeter from the United States

Calmmetrix Cement and Concrete, USAisothermal calorimeter

cement concreteisothermal calorimeter-CALMETRIX I-CAL 8000 HPC

Background: Isothermal calorimetry in cement and concrete testingThe isothermal calorimetry method characterizes the reaction rate of cementitious materials by the amount of heat released per unit time during the hydration process. Due to the influence of reaction rate on cementitious materialsThe workability of the slurry, such as workability, setting time, and early strength development, is very important, therefore the calorimetry method is widely used to develop new cementitious materialsMaterials and composite materials, quality control, and research on the effects of different chemical additives and cementitious material compositions on performance.

I-Cal 8000 HPCcement/High precision professional calorimeter for concreteI-Cal 8000HPCis a kind of8 channelisothermal calorimeter, can be used to test cement paste and sandSlurry or even concrete. Testing of concrete is crucial for detecting the molecules of composite admixtures and cementitious materialsThe interaction between them is particularly important. Plot hydration when the ambient temperature around the sample remains constantThermal curve. Through the software interface with the feedback loop, the temperature can be easily set to ensure optimal controlSystem. And high-precision sensors can measure the heat flow generated by the hydration of cementitious materials in concrete.

ICal 8000 HPCadoptCalmetrixUse a dedicated variable reference sample to adjust the sensitivity of each sample channelReference sample quality improves flexibility and accuracy, while reducing the need for single channel configurationThe mutual interference between roads.I-Cal 8000HPCcement concreteisothermal calorimetercomply withASTM C1679andASTM C1702Standard, can be done simultaneouslyUsed for short-term and long-term hydration heat measurement.The working principle of shotcrete quick setting agent is to accelerate the hydration products of cementThe formation of hydrated calcium sulfoaluminate in cement leads to the formation of aluminum salts and sulfuric acidThe reactivity of salt phase is particularly important. adoptI-Cal 8000 HPCtoEvaluating the activity of cement minerals and the performance of accelerators is currently the most important approachAppropriate methods. For the same sprayed concrete quick setting agent, due to differencesThe reaction activity of aluminate and sulfate inside cement is different. In the evaluationPlease use the same cement for the performance of the rapid setting agent.The left image shows the use ofisothermal calorimeterSpray coagulation with different dosagesStudy on the influence of soil quick setting agent performance. The green curve represents the sample with a single addition of retarderThe four curves from yellow to black represent the addition of a quantitative retarder followed by the addition ofThe quality scores are as follows:2%、4%、6%、8%Jet mixingThe heat release rate and heat release curve of the concrete quick setting agent sample. can be seen asAfter the addition of a rapid setting agent, the hydration main peak of each sample was advanced and the setting time was shortenedRapidly decreasing; There are significant differences in the effect of different dosages of accelerators, as shown in the tableThis rapid setting agent has good performance.