Portland cement (PC) as a component of concrete or serve as an inorganic binder is generally the main character is binding in the presence of water and hydraulically hardened. Portland cement is a fine bubukan material, the grains about 0.05 mm and consists essentially of a crystalline-crystalline compounds kornpleks. Cement raw materials is highly dependent on the content of the original material contained in a particular area.<\/p>\n

For simple building construction, cement examination in the field is very rarely done, because portland cement on the market has been declared unfit for use by regulatory agencies. Some examination of the cement in the field include;
\n1 Early Binding Tests with Nails<\/strong>
\nThe way the test is as follows;
\na. 100 grams of portland cement is mixed with water as much as 25-30 grams, stirring for 3 minutes to form a stiff dough. The mortar was then made in the form of a cake on the plate glass with a diameter of 10 cm and 1.5 cm high at its center to the edge thinning.<\/p>\n

b. With a fingernail or a small knife from time to time made scratches on the dough. If scratches remain, (not shut down), it is considered that the bond began to happen. Final bond is achieved when the pressure has not obtained a mild deep scratches.<\/p>\n

2 Combustion Testing with Ball Shape Kekelan<\/strong>
\nThe way the test is as follows;
\na. 100 grm portland cement mixed with water as much as 20 grams. With the palm of the hand for 5 minutes was made into a ball. The amount of water that is considered appropriate when the ball is slightly moist and slightly reduced if there was a slight change in shape without being destroyed. Excess water is removed by pat da menggulir- cement the scroll ball on a piece of paper suction. The ball is placed on a steel plate and heated by a stove burner. Heating should be run in stages, so that within half an hour the flame apin on the steel plate.<\/p>\n

b. Testing was stopped when a glass mirror placed above the cement ball is no longer clouded with dew. If the ball is apparently full of cracks and expansion-expansion, the cement did not have a good shape eternity.<\/p>\n","protected":false},"excerpt":{"rendered":"

Portland cement (PC) as a component of concrete or serve as an inorganic binder is generally the main character is binding in the presence of water and hydraulically hardened. Portland cement is a fine bubukan material, the grains about 0.05 mm and consists essentially of a crystalline-crystalline compounds kornpleks. Cement raw materials is highly dependent …<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[33],"tags":[2853,2854,2851,2850,2852,2857,2849,2855,2856,2848],"class_list":["post-5287","post","type-post","status-publish","format-standard","hentry","category-memeriksa-bahan","tag-cement-material-calculator","tag-cement-material-data-sheet","tag-cement-material-properties","tag-cement-material-safety-data-sheet","tag-cementing-material-in-sedimentary-rocks","tag-cementing-material-used-in-taj-mahal","tag-cementitious-material","tag-cementitious-material-from-rice-husk-and-seashells","tag-cementitious-material-from-rice-husk-seashells-and-clay","tag-material-cement"],"_links":{"self":[{"href":"https:\/\/www.tneutron.net\/blogs\/wp-json\/wp\/v2\/posts\/5287","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.tneutron.net\/blogs\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.tneutron.net\/blogs\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.tneutron.net\/blogs\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.tneutron.net\/blogs\/wp-json\/wp\/v2\/comments?post=5287"}],"version-history":[{"count":1,"href":"https:\/\/www.tneutron.net\/blogs\/wp-json\/wp\/v2\/posts\/5287\/revisions"}],"predecessor-version":[{"id":8891,"href":"https:\/\/www.tneutron.net\/blogs\/wp-json\/wp\/v2\/posts\/5287\/revisions\/8891"}],"wp:attachment":[{"href":"https:\/\/www.tneutron.net\/blogs\/wp-json\/wp\/v2\/media?parent=5287"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.tneutron.net\/blogs\/wp-json\/wp\/v2\/categories?post=5287"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.tneutron.net\/blogs\/wp-json\/wp\/v2\/tags?post=5287"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}