A design method of mix proportion of steel slag permeable concrete
A permeable concrete and mix ratio design technology, which is applied to ceramic products, other household appliances, household appliances, etc., can solve the problems of incomplete design methods, undetermined w/c ratio, and limited papers on permeable concrete mix ratio design methods, etc.
Active Publication Date: 2021-04-20
科利尔环保科技有限责任公司
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Problems solved by technology
However, there are very limited papers on pervious concrete mix design methods
These design approaches are not complete; they have many shortcomings
For example, they did not identify how to determine the w / c ratio, or did not take into account the effect of compaction on concrete properties, etc.
Therefore, there is currently no method for determining the mix design of pervious concrete, and the mix ratio of pervious concrete is always selected from experimental studies
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[0043] A steel slag permeable concrete mix ratio design method, comprising the following steps:
[0044] S01: Select the target void volume V V =0.17m 3 (Let the total volume of concrete be 1);
[0045] S02: Select the material used for permeable concrete;
[0046] S03: Collect data: aggregate gradation, moisture content b=0.5%, material density ρ of coarse aggregate I =2740kg / m 3 , the material density of sand ρ S =2620kg / m 3 , the material density ρ of cement c =3131kg / m 3 ;
[0047] S04: Calculation coefficient where V G is the aggregate volume, V G＞80 is the aggregate volume greater than 80 μm;
[0048] S05: Calculate the total volume of the aggregate where V V is the void volume;
[0049] S06: m S =0.07×m I ,and Simultaneous m S =0.106kg, m I =1.515kg.
[0050] S07: The calculated volume of steel slag is smaller than the volume corresponding to the actual measured compactness, then the compaction pressure during the concrete pouring process should be...
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Abstract
The invention discloses a design method of the mix ratio of steel slag permeable concrete based on the quantification of cement paste covered on the surface of steel slag. It is characterized by the use of steel slag as coarse aggregate, which saves material costs, provides design drawings as a guide for mix ratio design to increase its simplicity and practicability, and determines the void ratio, and also considers the impact of compaction strength on concrete performance. The new steel slag permeable concrete mixing ratio design method of the present invention determines sufficient steel slag and cement slurry quantity, and then obtains the w / c ratio of the cement slurry through a unique drainage test to prevent excessive flow of the cement slurry due to compaction or vibration , to ensure the stable performance of the concrete, and achieve a reasonable mix ratio of steel slag permeable concrete through this method.
Description
technical field [0001] The invention relates to a mixing ratio design method of steel slag permeable concrete, and belongs to the field of civil engineering materials. Background technique [0002] The mix design of pervious concrete is different from conventional ones. The mix design of the pervious concrete uses Portland cement, homogeneous coarse aggregate, fine aggregate equal to 7% of the total weight of all aggregates and water. The addition of fine aggregate (sand) gives concrete additional compressive strength, better durability and high resistance to freeze-thaw cycles. [0003] Many previous papers have investigated the inherent properties of pervious concrete in terms of water-cement ratio, aggregate size, type of binder material, or the effect of compaction energy. However, papers on mix design methods for pervious concrete are very limited. These design approaches are not complete; they have many shortcomings. For example, they did not determine how the w / c ...
Claims
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IPC IPC(8): C04B28/04C04B38/00C04B111/40
CPCC04B28/04C04B2111/00284C04B2111/40C04B14/06C04B18/142C04B38/0041
Inventor 李威彤谢文剑沈楠程熙媛吴朝国石振祥陈徐东
Owner 科利尔环保科技有限责任公司