Study on strength of concrete under composite admixture and economic benefit analysis
In this paper,six kinds of concrete specimens with different steel slag content were prepared by add-ing industrial solid waste on the basis of raw materials,and the compressive strength test was carried out by digital pressure testing machine. The test results show that steel slag has a great influence on the early strength and late strength of concrete. The demoulding strength of concrete shows a decreasing trend with the increase of steel slag content,and the mechanical properties of concrete are the best when the steel slag content is 8％. The 28d compressive strength of concrete specimens after adding steel slag can meet the design strength re-quirements. With the increase of steel slag content,the later compressive strength will also increase,and the compressive strength reaches the peak when the content is 16％. For the project with tight construction period and high mold turnover rate,the steel slag content can be selected as 8％. This result can save about 9.78 yuan per cubic meter of concrete. For the project that the construction period is not tight and the mold turnover rate is low and does not require long-distance transportation and installation,the steel slag content can be selected as 16％. This result can save about 15.66 yuan per cubic meter of concrete.
万方数据
维普
