In this paper, twelve different concrete mixes made from local materials were studied with a view to determining which of the mix designs will produce high-performance concrete. Varied water-cement ratios (w/c) 0.3, 0.35, and 0.4 combinations particle sizes coarse aggregates. Twelve then produced, cast, cured for 7, 14, 21, 28, 45, 90 days. Superplasticizer was used facilitate workability mixes...

The purposes of this study are to describe the students’ needs and design supplementary materials for reading skill by using local wisdom second grade students MTs Al Khairaat Gorontalo. By Research Development Method, results show that 1) need which were related decription tourism objects, warning about cleanliness story. 2) Students preffer read text consisted 200-300 words. 3) want answer 5 ...

From the liquid state to room temperature, two successive solid-state phase transitions occur in pure zirconia. It is well-known that last one (tetragonal monoclinic) martensitic and induces large volume variations shear strains. Elastic inelastic behaviors of zirconia-based materials are strongly influenced by this transition associated strain fields it induces. Knowledge stress at crystal sca...