Mustafa Haluk ÇELİK | Mahmut VURAL

Article | 2012 | Contemporary Engineering Sciences5 ( 6 )

In this study, usability and resistance of silica fume in the manufacture of adobe by mixing silica fume in certain proportions with the material used in the manufacture of adobe was investigated. For this purpose, a certain amount of cement with no or some silica fume content was added to adobe. Three bricks were prepared with each of the cement added mixtures containing 0, 5, 10, and 15% (wsilica fume/wcement) silica fume. The prepared samples were tested to determine compressive strength, water resistance, and wind resistance. For the wind resistance tests, the bricks were painted with either plastic paint or lime. The results of . . . the experiments showed that the silica fume substitution can be said to increase compressive strength and water resistance. However, the wind resistance values were not changed in the samples painted with plastic paint. The samples painted with lime showed visible capillary cracks, and partial spills occurred. - Keywords: Silica Fume, Adob More less

Mustafa Haluk ÇELİK | Mahmut DURMAZ

Article | 2012 | Contemporary Engineering Sciences5 ( 6 )

In this study, it was tried to obtain bearing concrete by using the pumice and perlite aggregates in certain proportions. Different cement dosages were used in every mixture poured with portland cement and portland composite cement, the 60% pumice and 40% perlite aggregates of which were kept stable. The silica fume was added as much as 10% of cement amount in mixture. Mixtures from 200 to 500 doses were made and poured with every type of cement. The prepared samples left to water cure and their 7 and 28 days compressive strengths were determined. The test results indicated that the mixtures poured with portland cement has a higher . . .compressive strength than those poured with portland composite strength. While the concretes poured with portland composite cement up to 500 doses can be used only insulation, the concretes poured with portland cement at 450 doses and above show the characteristics of side bearing concrete. – Keywords: perlite, pumice, concrete, portland cement, composite cement, compressive strength, silica fum More less

Ramiz RAFATOV | Mustafa Haluk ÇELİK

Article | 2012 | International Journal of Mathematical Analysis6 ( 5-8 )

In this study, a problem related with management functions for boundry and Cauchy problems in linear integro-differential systems having Fredholm Integrals is taken in hand and the solution is done with the help of using minimum Power.

Avıt ASANOV | Mustafa Haluk ÇELİK

Article | 2013 | International Journal of Mathematical Analysis7 ( 17-20 )

In this paper is dedicated to the research of the problem of uniqueness and stability of solutions for linear integral Equations of the first kind with two variables. Here the operator generated by the kernels is not the compact operator.