DB43/T 2141-2021 沥青路面热再生施工与验收技术规范

ICS93.080.01

CCSP66

43

湖南省地方标准

DB43/T2141—2021

沥青路面热再生施工与验收技术规范

Technicalspecificationsforhotrecyclingconstruction

andacceptanceofasphaltpavement

2021-08-03发布2021-10-03实施

湖南省市场监督管理局发布

DB43/T2141—2021

目次

前言························································································································Ⅲ

1范围·····················································································································1

2规范性引用文件······································································································1

3术语和定义············································································································1

4符号·····················································································································3

5材料·····················································································································3

5.1一般规定·········································································································3

5.2沥青···············································································································3

5.3沥青再生剂······································································································3

5.4集料···············································································································4

5.5矿粉···············································································································4

5.6水泥···············································································································4

5.7RAP·················································································································4

5.8再生沥青·········································································································5

6沥青混合料············································································································5

6.1一般规定·········································································································5

6.2再生沥青混合料································································································6

6.3复拌再生与加铺再生用的新沥青混合料··································································6

7厂拌热再生沥青混合料生产与施工··············································································6

7.1一般规定·········································································································6

7.2厂拌热再生设备································································································6

7.3RAP回收··········································································································7

7.4RAP预处理与堆放······························································································7

7.5试验路段·········································································································8

7.6沥青混合料拌和································································································8

7.7运输···············································································································8

7.8摊铺···············································································································8

7.9压实···············································································································9

7.10养生和开放交通······························································································9

8就地热再生路面施工································································································9

8.1一般规定·········································································································9

8.2就地热再生设备································································································9

8.3施工准备·········································································································9

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DB43/T2141—2021

8.4试验路段·······································································································10

8.5路面加热·······································································································10

8.6路面翻松（或铣刨）························································································10

8.7新材料的添加·································································································11

8.8再生沥青混合料拌和························································································11

8.9再生沥青混合料摊铺························································································11

8.10再生沥青混合料碾压······················································································11

8.11施工接缝·····································································································11

8.12修边············································································································12

8.13开放交通及其他····························································································12

9质量管理与验收····································································································12

9.1质量管理·······································································································12

9.2检查验收·······································································································14

附录A（规范性）RAP取样与试验分析··········································································15

A.1现场取样·······································································································15

A.2拌和场料堆取样······························································································15

A.3试验缩分·······································································································15

A.4RAP评价········································································································15

附录B（规范性）厂拌热再生沥青混合料配合比设计·······················································17

B.1一般规定·······································································································17

B.2级配与RAP掺量······························································································18

B.3新沥青及沥青再生剂用量确定············································································18

B.4矿料级配设计·································································································19

B.5确定最佳沥青用量···························································································19

B.6马歇尔试件制备方法························································································19

B.7配合比设计检验······························································································20

B.8配合比设计报告······························································································20

附录C（规范性）就地热再生沥青混合料配合比设计·······················································21

C.1一般规定·······································································································21

C.2级配与RAP掺量······························································································21

C.3新沥青及沥青再生剂用量确定············································································21

C.4矿料配合比设计······························································································24

C.5确定最佳沥青用量···························································································24

C.6马歇尔试件制备方法························································································25

C.7配合比设计检验······························································································25

C.8配合比设计报告······························································································25

II

DB43/T2141—2021

前言

本文件按照GB/T1.1—2020《标准化工作导则第1部分：标准化文件的结构和起草规则》的规

定起草。

请注意本文件的某些内容可能涉及专利。本文件的发布机构不承担识别专利的责任。

本文件由湖南省交通运输厅提出并归口。

本文件起草单位：湖南云中再生科技股份有限公司、湖南省交通科学研究院有限公司、湖南省交通

建设质量安全监督管理局、湖南大学、长沙理工大学、湖南省交通建设质量监督检测有限公司、湖南高

速养护工程有限公司、长沙市公路桥梁建设有限责任公司、湖南交通国际经济工程合作有限公司、湖南

云景建设有限责任公司、湖南省通和工程有限公司、湖南途嘉道路养护有限责任公司。

本文件主要起草人：吴超凡、虢曙安、刘山建、张剑波、胡跃华、孙艳华、肖杰、张恒龙、钟梦武、

胡红波、李杰、彭红卫、吴初平、郑祖恩、叶青、黄斌、徐朔、王曦、朱沅峰、张继森、韩庆奎、胡贵

华、张允宝、李泉、丁俊剑、万暑、孟凡威、李珍贵、吴晚良、钟立昌、张格、刘小金、周艺、蒋岳楼、

邱军、林正根、贺杰军。

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DB43/T2141—2021

IV

DB43/T2141—2021

沥青路面热再生施工与验收技术规范

1范围

本文件规定了沥青路面热再生施工与验收技术的材料、沥青混合料、厂拌热再生沥青混合料生产与

施工、就地热再生路面施工、质量管理与验收的要求。

本文件适用于各等级公路的热再生沥青面层与基层的施工与验收，可供设计、生产、施工、监理、

咨询及建设单位参考。城镇道路及广场等可参照执行。

2规范性引用文件

下列文件中的内容通过文中的规范性引用而构成本文件必不可少的条款。其中，注日期的引用文件，

仅该日期对应的版本适用于本文件；不注日期的引用文件，其最新版本（包括所有的修改单）适用于本

文件。

GB175通用硅酸盐水泥

CJJ1城镇道路工程施工与质量验收规范

JTG3450公路路基路面现场测试规程

JTG5142公路沥青路面养护技术规范

JTG5210公路技术状况评定标准

JTG5421公路沥青路面养护设计规范

JTG/T5521公路沥青路面再生技术规范

JTGD50公路沥青路面设计规范

JTGE20公路工程沥青及沥青混合料试验规程

JTGE42公路工程集料试验规程

JTGF40公路沥青路面施工技术规范

JTGF80/1公路工程质量检验评定标准

3术语和定义

下列术语和定义适用于本文件。

3.1

沥青混合料回收料reclaimedasphaltpavement（RAP）

采用铣刨、开挖等方式从沥青路面上获得的旧沥青混合料。

[来源：JTG/T5521—2019，2.1.1]

3.2

沥青路面再生asphaltpavementrecycling

采用专用机械设备对旧沥青路面或RAP进行处理，并掺加一定比例的新矿料、新沥青、沥青再生剂

（必要时）等形成路面结构层的路面施工技术。按照再生沥青混合料制备和施工温度的不同，沥青路面

再生分为热再生和冷再生；按照施工场合和工艺的不同，沥青路面再生分为厂拌再生和就地再生。

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3.3

厂拌热再生hotcentralplantrecycling（HCPR）

在沥青混合料拌和厂（场、站）将RAP破碎、筛分后，以一定的比例与新矿料、新沥青、沥青再生

剂（必要时）、添加剂（需要时）等加热拌和成沥青混合料，然后铺筑形成沥青路面的再生施工技术。

[来源：JTG/T5521—2019，2.1.6，有修改]

3.4

就地热再生hotin-placerecycling（HIR）

采用专用再生设备对沥青路面就地进行加热、翻松或铣刨，就地掺入一定数量的沥青再生剂、新沥

青（需要时）、新沥青混合料等，经热态拌和、摊铺、碾压等工序，一次性实现对沥青路面表面一定深

度范围内的旧沥青混凝土进行再生的施工技术。分为复拌再生和加铺再生两种。

[来源：JTG/T5521—2019，2.1.7，有修改]

3.5

复拌再生remixing

将旧沥青路面加热、翻松或铣刨，就地掺加一定数量的沥青再生剂、新沥青（需要时）、新沥青混

合料（需要时），经热态拌和、摊铺、压实成新沥青路面的再生施工技术。

[来源：JTG/T5521—2019，2.1.7，有修改]

3.6

加铺再生repaving

将旧沥青路面加热、翻松或铣刨，就地掺加一定数量的沥青再生剂、新沥青（需要时），经热态拌

和成再生沥青混合料，利用再生复拌机的第一熨平板摊铺再生沥青混合料，利用再生复拌机的第二熨平

板将新沥青混合料摊铺在再生沥青混合料之上，两层一起压实成新的沥青路面的再生施工技术。

[来源：JTG/T5521—2019，2.1.7，有修改]

3.7

添加剂additive

掺加到沥青混合料中以提高其某项或几项性能的、除矿料与沥青外的有机或无机外掺材料，包括各

类纤维、抗剥落剂、抗车辙剂、温拌剂等。

3.8

沥青再生剂rejuvenatingagent（RA）

掺加到再生沥青混合料中，用于改善老化沥青性能的添加剂。

[来源：JTG/T5521—2019，2.1.5]

3.9

再生沥青rejuvenatedasphalt

由RAP中的回收沥青与沥青再生剂、新沥青（需要时）均匀混合而成的沥青胶结料。

[来源：JTG/T5521—2019，2.1.15，有修改]

3.10

再生矿料rejuvenatedaggregate

在再生沥青混合料中，包括RAP中旧矿料、新添加的集料与填料（需要时）在内的合成矿料的总称。

3.11

再生沥青混合料recycledasphaltmixture

RAP以一定的比例与新矿料、新沥青、沥青再生剂（必要时）、外掺剂（需要时）等加热拌和而成

的沥青混合料。

3.12

RAP矿料级配gradationofaggregateinRAP

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用抽提或燃烧法除去RAP中的沥青材料后进行水洗筛分测得的矿料级配。

3.13

再生沥青混合料矿料级配gradationofaggregateinrecycledmixture

RAP中的矿料与新添加的矿料合成后的矿料级配，即再生矿料的筛分级配。

3.14

RAP掺配比percentageofRAPinrecycledmixture

RAP的烘干质量占再生沥青混合料总干质量的百分比。

3.15

新沥青混合料newasphaltmixture

由全新的矿料、沥青及其他添加剂材料（需要时，但不包括沥青再生剂）按配合比要求生产的热拌

沥青混合料。

3.16

回收沥青recycledasphaltinRAP

RAP经抽提、蒸发后获取的已经老化的沥青。

3.17

新沥青newasphalt

未经拌和使用过的、直接从沥青厂家生产出来的石油沥青或改性沥青。

3.18

RAP沥青含量recycledasphaltcontentofRAP

回收沥青占干燥RAP总干质量的百分比。

4符号

下列符号适用于本文件。

Pnb预估沥青用量

Pra预估再生剂掺量

5材料

5.1一般规定

5.1.1生产热再生沥青混合料前，应对所使用的各种材料进行质量检验，经评定合格后方可使用。

5.1.2不同来源、品种、规格、老化程度的RAP应分开堆放，避免混杂；因条件限制时，沥青与矿料

为同类型的RAP可混堆，但应用装载机翻拌均匀后方可使用。RAP应堆放在预先经过硬化处理、排水通

畅且搭棚遮盖的地面上。

5.2沥青

5.2.1再生沥青混合料中新沥青的选用应按照道路等级、气候条件、交通荷载、路面类型及结构层位

与受力特点、施工方法等，结合当地的使用经验确定。宜采用50号A级、70号A级、90号A级、110

号A级道路石油沥青和SBS改性沥青，其技术要求应符合JTGF40的规定。

5.2.2当SBS改性沥青用于重交通荷载等级及以上道路时，软化点不宜低于70℃。

5.3沥青再生剂

3

DB43/T2141—2021

5.3.1沥青再生剂技术指标宜符合JTG/T5521的相关规定。

5.3.2应根据RAP中回收沥青老化程度、沥青含量、RAP掺配比例、沥青再生剂与回收沥青的配伍性，

结合试验结果综合选择沥青再生剂品种。

5.3.3沥青再生剂应贮存在能自动控温的密闭容器中，且远离明火、高温区。

5.4集料

5.4.1新添加的粗、细集料技术指标应符合JTGF40的相关规定。单一粗、细集料技术指标不符合要

求，但集料混合料的技术指标符合要求的，可以使用。

5.4.2再生沥青混合料中新添加的集料与旧集料混合后的集料技术指标，应符合JTGF40的相关规定。

5.5矿粉

再生沥青混合料中新添加矿粉的技术指标应符合JTGF40的相关规定。

5.6水泥

沥青混合料添加水泥时，其技术指标应符合GB175的相关规定。

5.7RAP

5.7.1用于厂拌热再生的RAP应经过预处理后方可使用，预处理方法应符合本文件7.4条的相关规定。

5.7.2RAP宜按表1所列项目进行检测。

表1RAP检测项目及技术要求

材料检测项目技术要求试验方法

含水率

≤2

％

RAP矿料级配实测

RAP本文件附录A

沥青含量

实测

％

砂当量

≥55

％

针入度（25℃）

≥10JTGE20，T0604

0.1mm

动力黏度（60℃）

RAP中的沥青必要时测JTGE20，T0620

Pa.s

软化点

实测JTGE20，T0606

℃

延度（15℃/5℃）

RAP中的沥青实测JTGE20，T0605

cm

≥9.5mm≤12

针片状颗粒含量

JTGE42，T0312

％

＜9.5mm≤18

RAP中的粗集料