Fizik Öğretiminin Sorunları Üzerine Öğretmen Görüşlerinin Değerlendirilmesi

The aim of this study is to evaluate high school physics teachers’ opinions and suggestions about physics instruction. The respondents of the study consisted of 152 physics teachers working in the city centres of the provinces Diyarbakır, Şanlıurfa, Mardin, Sürt and Batman. The data were gathered through multiple- choice questioner posed to the teachers. The evaluation results are presented given as frequency distributions and percentages in charts and (ext. In the last section, some possible suggestions for physics instruction are made with the help of the results.Bu çalışmanın amacı lise fizik öğretmenlerinin fizik öğretiminin sorunlarına ilişkin görüş ve önerilerini değerlendirmektir. Araştırmanın örneklemi Diyarbakır, Şanlıurfa, Mardin, Siirt ve Batman il merkezlerinde görev yapan 152 fizik öğretmeni oluşturmaktadır. Veriler, öğretmenlere yöneltilen anket sorularına verilen yanıtlar ile elde edilmiştir.. Değerlendirme sonuçları, frekans dağılımları ve yüzdelikleri alınarak, tablolar ve metin içinde bulgular bölümünde sunulmuştur. Son bölümde fizik öğretimi için araştırma sonuçlarına dayalı alarak bazı öneriler verilmiştir

PRODUCTION OF HIGH PERFORMANCE CONCRETE USING ADMIXTURES

In this study, it is aimed that production of high performance concrete using admixtures. The admixture is used to resist against to freezing of concrete, and concrete (C20) is produced, and cured in water. 8 samples are tested in pressure, and mean stress is determined as 28 MPa. Remaining two samples are tested with image processing technique, and determined that sample which containing an admixture is better performing than the other

Nanomaterials, Nanoparticles, and Nanostructures

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Improvement in engineering properties of expansive soils using ground granulated blast furnace slag

Improvement in engineering properties of expansive soils by mixing ground granulated blast furnace slag (GGBFS) is the main focus of this research. For this purpose two expansive soil samples were collected from DG Khan and Sialkot areas (Pakistan). Classification tests revealed that DG Khan sample belonged to fat clay (CH) while Sialkot soil was lean clay (CL) as classified by Unified Soil Classification System. GGBFS has been added in varying proportions between 0 and 55% in these soil samples to study its role in stabilizing these expansive soils. Based on the laboratory test performed on composite soil samples, it was observed that maximum dry unit weight increased up to 10 % by adding 50% GGBFS in both samples. California bearing ratio (CBR) value showed an increase from 3.2 % to 11.5% for DG Khan soil while CBR values varied from 2.4% to 10.7% for Sialkot soil by mixing 50% GGBFS. Addition of 30 % GGBFS to DG Khan soil reduced swell potential from 8 % to 2 % while in Sialkot soil, 20 % addition of GGBFS reduced swell potential from 5 % to 2 %. Unconfined compressive strength of remoulded sample cured for 28 days increased by about 35% with the addition of 30%GGBFS. The results indicated that mixing of GGBFS in the expansive soil samples have a marked increase in their engineering properties. Also, it is an affective and environmental friendly means to dispose waste of steel industry