TY - JOUR ID - 143620 TI - Effect of Clinker Phase Changes on Cement Performance and Its Reactivity with Super Plasticizer Additive JO - Journal of Civil Engineering and Materials Application JA - JCEMA LA - en SN - 2676-332X AU - Kafash Bazari, Ali Akbar AU - Chini, Mehdi AU - Nikfal, Zivar AU - Vatani, Mohamad AD - Chief of research and development of Tehran cement Co, Tehran, Iran. AD - Assistant Professor of Road, Housing and Urban Development Research Centre, Tehran, Iran. AD - Chief of physical Laboratory of Tehran cement Co, Tehran, Iran AD - Expert of Laboratory of Tehran cement Co, Tehran, Iran. Y1 - 2021 PY - 2021 VL - 5 IS - 4 SP - 211 EP - 221 KW - Alite KW - Aluminate KW - Additive DO - 10.22034/jcema.2021.143620 N2 - Based on various sources and experiences, the main phases of clinker significantly impact the technical characteristics of cement and its performance in the resulting concrete. The interaction of clinker phases with concrete admixtures is also obvious, but the effect of each phase and their optimal values for optimal concrete performance is complicated. Therefore, in this study, this issue was an extensive laboratory operation was designed. So 11 samples were selected whose phase values were varied. Then laboratory cement was performed under the same conditions using 11 clinker samples, and physical and chemical analysis of cement samples was performed. So 22mixtures were prepared so that 11mixtures with the title of control and 11mixtures with the title of additives. Based on the results, comparing the effect of C3S clinker on the compressive strength of standard mortar and concrete showed that there is no direct correlation between C3S and compressive strength, but it can be said that with each percentage increase of C3S clinker, about 1.5 unit (kg/cm2). However, with the increase of C3S from about 57% onwards, the decrease in concrete strength is clearly seen, which can be referred to as the negative effect of excessive C3S phase (due to the solubility of concrete and increasing the w/c ratio). Based on the results of air determination experiments of fresh concrete mixtures containing additives and its declining trend in this study, it was found that the optimal value of C3A is about 5-6%. UR - https://www.jcema.com/article_143620.html L1 - https://www.jcema.com/article_143620_5c06cdbabb1f50f73cdd5e38c6a98d42.pdf ER -