Title: Effect of slag powder on properties of concrete and cement
Abstract: To explore the influence of fineness and dosage of slag on cement and concrete,the basic properties of slag and cement were analyzed,such as the normal consistency,setting time,fluidity and mechanical properties of cement and concrete by adding ultrafine slag and ordinary slag.The results show that the water requirement for normal consistency of cement paste decreases by using ordinary slag,increasing by using ordinary slag;both of them slightly postpone the setting time of cement paste;ordinary slag improves the fluidity of cement paste,while the ultrafine slag reduces the fluidity of cement paste;the early(7d)compressive strength of cement paste decreases and the later(28d) compressive strength of cement paste increases when ordinary slag and ultrafine slag are added;the 28d compressive strength of cement paste added 10%-50%ordinary slag is improved by 2.9%-9.7%,while it is improved by 3.9%-20.1% after adding ultrafine slag;the optimal replaceable content of ordinary slag and ultrafine slag is 10%-30%,and the compressive strength of concrete is enhanced greatly when the two kinds of slag are added to 10%-50%,respectively.
Publication Year: 2013
Publication Date: 2013-01-01
Language: en
Type: article
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