TY  - JOUR
T1  - Statistical Analysis for Studying Autoclave Test
AU - Salih, Marwa Asad AU - Saidik, Naghm M. 
JO  - Journal of Engineering and Applied Sciences
VL  - 14
IS  - 11
SP  - 3557
EP  - 3570
PY  - 2019
DA  - 2001/08/19
SN  - 1816-949x
DO  - jeasci.2019.3557.3570
UR  - https://makhillpublications.co/view-article.php?doi=jeasci.2019.3557.3570
KW  - Statistical analysis
KW  -autoclave expansion
KW  -MgO
KW  -CaO
KW  -soundness of cement
KW  -correlation coefficient
AB  - Late expansion may occur as a result of the hydration of calcium oxide and magnesium oxide in the
hardened concrete which if exceeded, may cause a cracks. One of the modern methods used to estimate the
stability of the cement size (expansion) is the autoclave method, this study aim to estimate the stability of the
cement and this will gives an indication of the late expansion. The statistical program “Statistica” were used
in the analysis of the factors affecting the results of autoclave test these factors were (CaO, SO<sub>3</sub> , MgO, Al<sub>2</sub> O<sub>3</sub> , Fe<sub>2</sub> O<sub>3</sub> , free lime, LOI, IR, LSF). The linear regression method was used and the study were done in two ways
individually and again in groups. The multiple linear regression was found to be very appropriate for predicting
the autoclave expansion of Portland cement. On the other hand there is no significant variance in the value of
correlation coefficient when studying the factors individually or in groups, so, it is preferable to use models
with individual factors for facilitate of research.
ER  -