A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Method for determining formula of high-modulus anti-fatigue hot recycled asphalt mixture
The invention provides a method for determining a formula of a high-modulus anti-fatigue thermal regeneration asphalt mixture. The method comprises the following steps: S10, measuring the proportion of old asphalt in RAP divided into n grades and the PG high-temperature grade; s20, selecting new asphalt; s30, setting the ratio of each grade of RAP in the reclaimed material; s40, performing grading design on the new aggregate, the new filler and the mineral aggregate in each grade of RAP according to the proportion of each grade of RAP, judging whether the requirements can be met or not, if so, executing the step S50, and if not, repeating the steps S30-S40; s40, preparing at least three groups of reclaimed material test pieces according to the ratio of each grade of RAP and the designed gradation, so that the ratios of asphalt in the reclaimed material corresponding to each group are different and are all in a range of 5.2 wt%-6.5 wt%; s50, the void ratio of the test piece is measured, the average void ratio of each group is calculated, and the group with the average void ratio of 1.5%-4% is selected; and S60, substituting the parameters corresponding to the selected group into a formula, and judging whether the formula is met or not. And if yes, determining the formula of the selected group as a reclaimed material formula, and if not, repeating the steps S20-S70.
本公开提供确定高模量抗疲劳热再生沥青混合料配方的方法，包括：S10测定在分成n档的RAP中旧沥青的占比和PG高温等级；S20选择新沥青；S30设定在再生料中各档RAP占比；S40根据各档RAP占比，对新集料、新填料和各档RAP中的矿料进行级配设计，判断是否能够满足要求，如果能够，执行步骤S50，如果不能，重复步骤S30～S40；S40根据各档RAP占比和所设计的级配，制备至少三组再生料试件，使得各组对应的在再生料中沥青的占比不同，均在5.2wt％‑6.5wt％范围内；S50测定试件空隙率，计算各组平均空隙率，选择平均空隙率为1.5％‑4％的组；和S60将所选择的组对应的参数代入公式，判断是否满足该公式。当满足时，将所选择的组的配方确定为再生料配方，当不满足时，重复步骤S20～S70。
Method for determining formula of high-modulus anti-fatigue hot recycled asphalt mixture
The invention provides a method for determining a formula of a high-modulus anti-fatigue thermal regeneration asphalt mixture. The method comprises the following steps: S10, measuring the proportion of old asphalt in RAP divided into n grades and the PG high-temperature grade; s20, selecting new asphalt; s30, setting the ratio of each grade of RAP in the reclaimed material; s40, performing grading design on the new aggregate, the new filler and the mineral aggregate in each grade of RAP according to the proportion of each grade of RAP, judging whether the requirements can be met or not, if so, executing the step S50, and if not, repeating the steps S30-S40; s40, preparing at least three groups of reclaimed material test pieces according to the ratio of each grade of RAP and the designed gradation, so that the ratios of asphalt in the reclaimed material corresponding to each group are different and are all in a range of 5.2 wt%-6.5 wt%; s50, the void ratio of the test piece is measured, the average void ratio of each group is calculated, and the group with the average void ratio of 1.5%-4% is selected; and S60, substituting the parameters corresponding to the selected group into a formula, and judging whether the formula is met or not. And if yes, determining the formula of the selected group as a reclaimed material formula, and if not, repeating the steps S20-S70.
本公开提供确定高模量抗疲劳热再生沥青混合料配方的方法，包括：S10测定在分成n档的RAP中旧沥青的占比和PG高温等级；S20选择新沥青；S30设定在再生料中各档RAP占比；S40根据各档RAP占比，对新集料、新填料和各档RAP中的矿料进行级配设计，判断是否能够满足要求，如果能够，执行步骤S50，如果不能，重复步骤S30～S40；S40根据各档RAP占比和所设计的级配，制备至少三组再生料试件，使得各组对应的在再生料中沥青的占比不同，均在5.2wt％‑6.5wt％范围内；S50测定试件空隙率，计算各组平均空隙率，选择平均空隙率为1.5％‑4％的组；和S60将所选择的组对应的参数代入公式，判断是否满足该公式。当满足时，将所选择的组的配方确定为再生料配方，当不满足时，重复步骤S20～S70。
Method for determining formula of high-modulus anti-fatigue hot recycled asphalt mixture
一种确定高模量抗疲劳的热再生沥青混合料配方的方法
ZENG YUN (author) / ZHANG LING (author) / ZHANG ZIYANG (author) / LUO JIAPENG (author) / ZHANG CHENGXUE (author) / ZHANG QIAONING (author) / WEI PAN (author) / ZHANG LI (author)
2024-08-20
Patent
Electronic Resource
Chinese
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