泡沫温拌沥青混合料施工技术规范

　 泡沫温拌沥青混合料施工技术规范

　Standard Specification for Construction of foamed warm asphalt mixture

　DB ××/T ×××—20××

　I 目 录

　 前 言 ················································································································ III 引 言 ················································································································ IV 1

　范围 ·························································································································· 1 2

　规范性引用文件 ·········································································································· 1 3

　术语、符号、代号 ······································································································· 1 3.1

　 术语 ····················································································································· 1 3.1.1

　沥青结合料 Asphalt binder，Asphalt cement ····························································· 1 3.1.2

　改性沥青 Modified asphalt cement ········································································· 1 3.1.3

　工厂化复合改性橡胶沥青 modified

　Factory composite asphalt ····································· 1 3.1.4

　TLA 改性沥青 TLA modified asphalt ······································································ 1 3.1.5

　泡沫温拌沥青 Foamed warm mix asphalt ································································· 1 3.1.6

　膨胀率 Expansion ratio ······················································································· 2 3.1.7

　半衰期 Half life ································································································ 2 3.1.8

　粘度变化率 Viscosity change rate ··········································································· 2 3.1.9

　泡沫温拌沥青混合料 Foamed warm asphalt mixture ···················································· 2 3.1.10

　沥青混合料施工温度 Working temperature of asphalt mixture ······································· 2 3.1.11

　正常施工 Normal construction ············································································· 2 3.1.12

　低温施工 Cold season construction ········································································ 2 3.2

　 符号及代号 ············································································································ 2 4

　分类标准 ···················································································································· 2 4.1

　 按矿料级配分类 ······································································································ 2 4.2

　 按集料粒径分类 ······································································································ 3 4.3

　 按沥青类型分类 ······································································································ 3 5

　材料 ·························································································································· 3 5.1

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

　 集料 ····················································································································· 3 5.2.1

　粗集料 ············································································································ 3 5.2.2

　细集料 ············································································································ 3 5.3

　 填料 ····················································································································· 3 5.4

　 纤维 ····················································································································· 3 5.5

　 水 ························································································································ 4 5.6

　 发泡剂 ·················································································································· 4 6

　泡沫温拌沥青的加工 ···································································································· 4 7

　泡沫温拌沥青混合料设计 ······························································································ 5 7.1

　 泡沫温拌沥青混合料设计流程 ···················································································· 5 7.2

　 泡沫温拌沥青混合料矿料级配 ···················································································· 7 7.3

　 泡沫温拌沥青混合料性能 ·························································································· 7 8

　泡沫温拌沥青混合料施工 ······························································································ 7 8.1

　 泡沫温拌沥青混合料的生产设备 ················································································· 7

　DB ××/T ×××—20××

　II 8.2

　 泡沫温拌沥青混合料的拌制 ······················································································· 7 8.3

　 运输 ····················································································································· 8 8.4

　 摊铺及碾压 ············································································································ 8 8.5

　 施工温度 ··············································································································· 8 8.6

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

　试验方法 ···················································································································· 9 9.1

　 集料 ····················································································································· 9 9.2

　 沥青及沥青混合料 ··································································································· 9 10

　施工质量与检查验收 ··································································································· 9 10.1

　 检验形式 ············································································································· 9 10.2

　 原材料检验 ·········································································································· 9 10.3

　 泡沫温拌沥青混合料检验 ························································································ 9 10.4

　 泡沫温拌沥青路面质量控制标准 ············································································· 10 本规范用词说明 ············································································································· 11 附录 A （规范性附录）

　沥青发泡效果试验方法 ·································································· 12 A.1

　 一般规定 ············································································································ 12 A.2

　 试验设备 ············································································································ 12 A.2.1

　沥青发泡设备 ································································································ 12 A.2.2

　钢桶、量尺与秒表 ·························································································· 12 A.3

　 试验步骤 ············································································································ 12 附录 B （规范性附录）

　泡沫温拌沥青粘度变化率试验方法 ··················································· 13 B.1

　 一般规定 ············································································································ 13 B.2

　 试验设备 ············································································································ 13 B.3

　 试验步骤 ············································································································ 13 附录 C （规范性附录）

　SUPERPAVE 设计方法与技术指标 ··················································· 15 附录 D （规范性附录）

　泡沫温拌沥青混合料施工和易性试验方法 ·········································· 17 D.1

　 一般规定 ············································································································ 17 D.2

　 试验设备 ············································································································ 17 D.3

　 试验步骤 ············································································································ 17 附录 E （规范性附录）

　泡沫温拌沥青混合料室内生产方法 ··················································· 19 E.1

　 一般规定 ············································································································ 19 E.2

　 泡沫温拌混合料的室内生产 ···················································································· 19 E.3

　 泡沫温拌混合料的成型方法 ···················································································· 19 附 件 条文说明 ············································································································· 20 1

　 范围 ····················································································································· 20 2

　 术语和定义 ············································································································ 20 3

　 分类标准 ··············································································································· 20 4

　 材料 ····················································································································· 20 5

　 泡沫温拌沥青加工 ··································································································· 21 6

　 泡沫温拌沥青混合料设计 ·························································································· 22 7

　 泡沫温拌沥青混合料施工 ·························································································· 22 8

　 施工质量与检查验收 ································································································ 22

　DB ××/T ×××—20××

　III 前 言

　 本规范按照 GB/T1.1-2009《标准化工作导则第 1 部分：标准的结构和编写规则》、GB/T1.2-2009《标准化工作导则第 2 部分：标准中规范性技术要素内容的确定方法》要求的规则编写。

　本规范附录 A、附录 B、附录 C、附录 D、附录 E 为规范性附录，附件为条文说明。

　本规范由本规范由××提出。

　本规范由××归口并负责解释。

　本规范起草单位：××。

　本规范主要起草人：××。

　本规范首次发布。

　DB ××/T ×××—20××

　IV 引 言

　 温拌沥青路面技术是一门新兴的筑路技术。在不影响沥青混合料各方面性能的前提下，其可以降低拌合温度、节省能源、减少生产过程中废弃物的排放。在诸多温拌技术中，泡沫温拌沥青混合料除了具备节能、减排，提高混合料和易性，延长混合料寿命等特点外，还具有不添加任何额外化学添加剂，仅需添加少量水的优势，是一项真正“绿色”的沥青路面技术。此外，泡沫温拌沥青可以适应在低温环境下进行沥青路面施工，沥青混合料经远距离运输后仍然具有良好的工作性能和压实性能。

　我国从 2010 年引进泡沫温拌技术，在多条公路上进行了试验与应用，取得了良好的社会和经济效益，但目前泡沫温拌沥青技术缺少系统性研究和施工指导，限制了其大规模的推广。为了更好的规范和指导泡沫温拌沥青混合料的设计及施工，保证采用泡沫温拌技术施工的沥青路面质量，编制组在总结现有应用及研究成果的基础上，参考国内外有关成果，编制了本规范。

　DB ××/T ×××—20××

　1 泡沫温拌沥青混合料施工技术规范

　1

　范围 本规范规定了泡沫温拌沥青混合料的分类、技术要求、试验方法、施工工艺和施工验收标准。本规范未涉及的内容，尚应符合国家颁布的现行有关标准、规范的规定。

　本规范适用于××省公路工程中泡沫温拌沥青混合料的设计、施工及质量检验。

　2

　规范性引用文件 下列文件中的条款通过本规范的引用而成为本规范的条款。凡是注日期的引用文件，其随后所有的修改单（不包括勘误的内容）或修订版均不适用于本规范，然而，鼓励根据本规范达成协议的各方研究是否可使用这些文件的最新版本。凡是不注日期的引用文件，其最新版本适用于本规范。

　JTG F40

　公路沥青路面施工技术规范 JTG E20

　公路工程沥青及沥青混合料试验规程 JTG E42

　公路工程集料试验规程 JTG F80/1

　公路工程质量检验评定标准 第一册

　土建工程 3

　术语、符号、代号 3.1

　术语 3.1.1

　沥青结合料 Asphalt binder，Asphalt cement 在沥青混合料中起胶结作用的沥青类材料（含添加的外掺剂、改性剂等）的总称。

　3.1.2

　改性沥青 Modified asphalt cement 通过掺加树脂、高分子聚合物、天然沥青或者其他材料等外掺剂（改性剂），使沥青或沥青混合料的性能得以改善而制成的沥青结合料。

　3.1.3

　工厂化复合改性橡胶沥青 modified

　Factory composite asphalt 将废旧轮胎原质加工成橡胶粉粒，以一定比例与沥青及多种高聚合物改性剂、稳定剂等，在工厂中按照规定高温条件进行研磨、发育混合而成的沥青胶结料。

　3.1.4

　TLA 改性沥青 TLA modified asphalt 指将特立尼达湖沥青作为改性剂，与适合道路工程使用的基质沥青按一定比例配伍，按规定的温度条件在专用拌合罐中搅拌适当时间配制而成的改性沥青。

　3.1.5

　泡沫温拌沥青 Foamed warm mix asphalt 指通过专门的沥青发泡设备，向高温道路石油沥青或 SBS 改性沥青中加入少量的水，使其产生泡沫，形成一种膨胀状态，并用于温拌沥青混合料中的沥青。

　DB ××/T ×××—20××

　2 3.1.6

　膨胀率 Expansion ratio 指沥青在发泡状态下的最大体积与发泡前的体积之比。

　3.1.7

　半衰期 Half life 指泡沫温拌沥青从最大体积衰减到最大体积一半时所需的时间。

　3.1.8

　粘度变化率 Viscosity change rate 沥青发泡前后粘度的变化量与发泡前的粘度比值。

　3.1.9

　泡沫温拌沥青混合料 Foamed warm asphalt mixture 使用泡沫温拌沥青作为结合料，在比同类型热拌沥青混合料出料、摊铺温度降低的条件下，采用一定的工艺与集料均匀拌合后仍然能够保证沥青路面证路用性能的混合料。

　3.1.10

　沥青混合料施工温度 Working temperature of asphalt mixture 指沥青混合料的拌合温度、摊铺温度和碾压温度。

　3.1.11

　正常施工 Normal construction 在气温高于 10℃条件下进行的温拌沥青混合料施工称为正常施工。

　3.1.12

　低温施工 Cold season construction 在气温低于 10℃条件下进行的温拌沥青混合料施工称为低温施工。

　3.2

　符号及代号 表 1

　符号及代号 序号 符号及代号 意义 3.2.1 FWA 泡沫温拌沥青混合料，Foamed warm asphalt mixture 之略语

　3.2.2 TLA 特立尼达湖沥青，Trinidad Lake Asphalt 之略语

　3.2.3 SMA 沥青玛蹄脂碎石混合料，Stone Mastic Asphalt（或 Stone Mastrix Asphalt）之略语

　3.2.4 Superpave 美国 SHRP（Strategic highway research program）沥青混合料配合比 设计体系注册名称，Superior Performing Asphalt Pavements 之略语

　3.2.5 αe 膨胀率, 指沥青在发泡状态下的最大体积与发泡前的体积之比

　3.2.6

　t1/2 半衰期, 指泡沫温拌沥青从最大体积衰减到最大体积一半时所需的时 间

　3.2.7 v 粘度变化率,指沥青发泡前后粘度的变化量与发泡前的粘度比值

　4

　分类标准 4.1

　按矿料级配分类 泡沫温拌沥青混合料按矿料级配分为密级配沥青混合料、半开级配沥青混合料、开级配沥青混合

　DB ××/T ×××—20××

　3 料。

　4.2

　按集料粒径分类 泡沫温拌沥青混合料分为粗粒式、中粒式和细粒式三种规格。

　4.3

　按沥青类型分类 泡沫温拌沥青混合料分为泡沫温拌普通沥青混合料、泡沫温拌 SBS 改性沥青混合料、泡沫温拌工厂化复合改性橡胶沥青混合料、泡沫温拌湖沥青混合料。

　5

　材料 5.1

　沥青 5.1.1

　用于泡沫温拌的沥青技术指标及适用范围应符合现行《公路沥青路面施工技术规范》（JTG F40）的要求。

　5.1.2

　发泡的沥青可采用道路石油沥青、SBS 改性沥青、工厂化复合改性橡胶沥青、TLA 改性沥青。

　5.2

　集料 5.2.1

　粗集料 5.2.1.1

　生产泡沫温拌沥青混合料时，不宜采用多孔性或内部吸水性强的集料，粗集料的吸水率不应大于 2%。

　5.2.1.2

　粗集料技术指标应符合现行《公路沥青路面施工技术规范》（JTG F40）的要求。

　5.2.2

　细集料 5.2.2.1

　高速公路和一级公路的沥青混合料，细集料应采用机制砂；其他等级公路的沥青混合料，细集料也可选用洁净的天然砂、石屑等。

　5.2.2.2

　细集料的技术指标应符合现行《公路沥青路面施工技术规范》（JTG F40）要求。

　5.2.2.3

　石屑应清洁、干净，不得含有泥土杂质，级配应满足现行《公路沥青路面施工技术规范》（JTG F40）要求。

　5.2.2.4

　机制砂应采用优质碱性石料为原料，使用专用的制砂机生产，其级配应满足 JTG F40 规范要求。

　5.3

　填料 5.3.1

　填料应采用洁净的碱性石料磨细的矿粉，可同时掺加消石灰粉或水泥替代部分填料，其用量宜为矿料总量的 1%～2%。

　5.3.2

　矿粉应干燥、洁净、无结块，质量应符合现行《公路沥青路面施工技术规范》（JTG F40）要求。

　5.4

　纤维 5.5.1

　在泡沫温拌沥青混合料中掺加的纤维稳定剂可采用木质素纤维、有机纤维等。

　5.5.2

　纤维应在 250℃的干拌温度条件下不变质，不发脆，使用纤维必须符合环保要求，不危害身体健康。纤维必须在温拌拌合条件下能充分分散均匀，避免采用在高温条件下才能分散的纤维。

　5.5.3

　纤维的技术指标应符合现行《公路沥青路面施工技术规范》（JTG F40）要求。

　DB ××/T ×××—20××

　4 5.5

　水 人或牲畜的饮用水均可作为泡沫温拌沥青的发泡用水。

　5.6

　发泡剂 发泡剂可采用化学发泡剂、物理发泡剂和表面活性剂，符合表 2 中一般技术要求的同时，能保证沥青发泡效果即可。

　表 2 泡沫温拌沥青发泡剂一般技术要求 指标类别 指标 外观 无色或淡黄色均匀液体 PH 值 5～7 与酸液、盐水配伍性 无沉淀无分层 6

　泡沫温拌沥青的加工 6.1.1

　试验室加工时应采用室内泡沫温拌沥青发泡设备。现场加工时应在拌合楼加装专用的泡沫温拌沥青发泡设备。

　6.1.2

　影响泡沫温拌沥青发泡效果的关键因素有沥青加热温度、发泡用水量。

　6.1.3

　泡沫温拌沥青在室内加工时，沥青发泡时的加热温度应根据不同的沥青类型通过试验确定。道路石油沥青发泡时的加热温度宜控制在 150℃，SBS 改性沥青发泡时的加热温度宜控制在 165℃,工厂化复合改性橡胶沥青及 TLA 改性沥青发泡时的加热温度宜控制在 175℃。

　6.1.4

　泡沫温拌沥青加工时的发泡水温为常温。

　6.1.5

　泡沫温拌沥青发泡效果的评价指标为膨胀率和半衰期，泡沫温拌沥青的发泡效果评价时，应采用 1%的用水量，在适宜发泡加热温度通过试验确定，具体试验方法按照本规范附录 A 的步骤进行。道路石油沥青和 SBS 改性沥青的膨胀率和半衰期宜符合表 3 的要求。

　表 3 泡沫温拌沥青发泡效果评价指标及标准 指标 道路石油沥青 SBS 改性沥青 工厂化复合改性橡胶沥青 TLA 改性沥青 试验温度（℃）

　150 165 175 175 膨胀率 αe ≥14 ≥4 ≥3 ≥3 半衰期 t1/2（s）

　≥6 ≥30 ≥35 ≥35 6.1.6

　泡沫温拌沥青发泡效果不满足要求时可采用合适的发泡剂，发泡剂要求符合本规范 5.6 要求。

　6.1.7

　泡沫温拌沥青的最佳发泡用水量的确定，应根据沥青类型、沥青加热温度通过试验确定。试验主要包括不同发泡用水量时泡沫温拌沥青的粘度变化率、泡沫温拌沥青混合料施工和易性、泡沫温拌沥青混合料的黏附性能。最佳用水量确定试验流程如图 1 所示。

　DB ××/T ×××—20××

　5

　图 1 最佳用水量确定的试验流程 当一定用水量下的泡沫温拌沥青粘度变化率绝对值达到最大、拌合电流值、剥落面积率达到最小值时，该用水量即为最佳发泡用水量。

　当一定用水量下的泡沫温拌沥青粘度变化率绝对值、拌合电流值、剥落面积率，难以同时达到最（大）

　小值时，可优先采用拌合电流值和剥落面积率两种指标同时达到最小值的用水量作为最佳发泡用水量。

　其中粘度变化率试验方法，详见本规范附录 B；施工和易性试验方法，详见本规范附录 C；集料与泡沫温拌沥青的黏附性能试验，参照现行《公路工程沥青及沥青混合料试验规程》（JTG E20）沥青与粗集料的黏附性试验方法（T0616～1993）进行。

　道路石油沥青的发泡用水量宜控制在 1%～2%范围，SBS 改性沥青的发泡用水量宜控制在 2%～4%，工厂化复合改性橡胶沥青的发泡用水量宜控制在 2.5%～4.5%，湖沥青改性沥青的发泡用水量宜控制在2%～4%。

　6.1.8

　不同用水量时沥青发泡前后的粘度变化率应在其适宜拌合温度下通过试验确定。道路石油沥青和 SBS 改性沥青在最佳用水量时发泡前后粘度变化率宜符合表 4 的要求。

　表 4 粘度变化率标准 指标 道路石油沥青 SBS 改性沥青 工厂化复合改性橡胶沥青 TLA 改性沥青 试验温度（℃）

　120 130 135 135 粘度变化率 v（绝对值）

　≥10 ≥30 ≥30 ≥30 6.1.9

　最佳用水量时发泡 2.5h 后的泡沫温拌沥青技术性能应符合沥青未发泡时的技术性能要求。泡沫温拌沥青技术性能试验时，其养护条件为：将制备的泡沫温拌沥青置入容器内放入保温箱，道路石油沥青在 120℃下保温 2.5h，SBS 改性沥青在 130℃下保温 2.5h，工厂化复合改性橡胶沥青在 135℃下保温 2.5h，TLA 改性沥青在 135℃下保温 2.5h。

　7

　泡沫温拌沥青混合料设计 7.1

　泡沫温拌沥青混合料设计流程 7.1.1

　泡沫温拌沥青混合料设计的流程如图 2 所示。

　粘度变化率 (η)

　绝对值 (|η|) 最大

　拌合电流值 (I)

　电流值 (I) 最小

　剥落面积率

　剥落面积率最小

　 最佳用水量确定

　 发泡用水量试验

　用水量（ 1%-4% ）

　黏附性评价

　用水量（ 1%-4% ）

　施工和易性评价

　用水量（ 1%-4% ）

　泡沫温拌沥青粘度变化

　DB ××/T ×××—20××

　6

　图 2 泡沫温拌沥青混合料设计流程 7.1.2

　泡沫温拌沥青混合料设计时所用原材料应符合本规范要求。

　7.1.3

　泡沫温拌沥青混合料设计时所用沥青发泡效果应符合本规范要求。

　7.1.4

　泡沫温拌沥青混合料设计时，需首先对未发泡沥青对应的热拌沥青混合料设计，热拌沥青混合料设计应按照现行《公路沥青路面施工技术规范》（JTG F40）规定的马歇尔混合料设计方法进行，条件允许的可采用 Superpave 设计方法。

　7.1.5

　当采用 Superpave 方法设计热拌沥青混合料时，矿料级配应符合附录 C 控制点和限制区范围的规定，设计的体积指标应符合附录 C 技术指标的要求。设计的热拌沥青混合料应按 JTG F40 规定进行马歇尔试验检验，马歇尔试验结果应符合附录 C 中沥青混合料马歇尔试验的技术要求。

　7.1.6

　根据马歇尔设计方法或 Superpave 设计方法，确定热拌沥青混合料的矿料级配，确定热拌沥青混合料最佳沥青用量（该沥青用量也为泡沫温拌沥青混合料的最佳沥青用量）。

　7.1.7

　采用马歇尔试验配合比设计方法，热拌沥青混合料技术要求应符合现行《公路沥青路面施否

　原材料选择

　发泡效果标准

　是

　剥落面积率最小

　剥落面积率

　电流值 (I) 最小

　拌合电流值 (I)

　绝对值 (|η|) 最大

　粘度变化率 (η)

　否

　JTG F40 要求

　是

　低温性能（低温弯曲试验）

　水稳定性 （浸水马歇尔、冻融劈裂试验）

　高温性能（车辙试验）

　泡沫温拌沥青混合料

　 最佳用水量确定 用水量（ 1%-4% ）

　泡沫温拌沥青粘度变化用水量（ 1%-4% ）

　施工和易性评价用水量（ 1%-4% ）

　黏附性评价分析原因

　最佳沥青用量

　发泡用水量试验

　马 歇 尔 或Superpave

　设计方法 沥青发泡效果的评价

　加入发泡剂 设计成功

　DB ××/T ×××—20××

　7 工技术规范》（JTG F40）的规定，并具有良好的施工性能。

　7.1.8

　当热拌沥青混合料的级配、最佳沥青用量，沥青发泡最近用水量确定后，按照附录 E 进行泡沫温拌沥青混合料室内生产。

　7.1.9

　泡沫温拌沥青混合料室内试验温度应根据具体沥青类型确定，通常比热拌沥青混合料的低30℃～50℃。道路石油沥青、SBS 改性沥青、工厂化复合改性橡胶沥青及 TLA 改性沥青的室内试验温度可参考表 5 执行。

　表 5 泡沫温拌沥青混合料室内试验温度 项目 道路石油沥青 SBS 改性沥青 工厂化复合改性橡胶沥青 TLA 改性沥青 拌合温度（℃）

　120℃～135 130℃～145 135℃～155 135℃～155 成型温度（℃）

　120℃～130 130℃～140 135℃～150 135℃～150 7.2

　泡沫温拌沥青混合料矿料级配 泡沫温拌沥青混合料采用的矿料级配范围应符合现行《公路沥青路面施工技术规范》（JTG F40）对热拌沥青混合料级配的要求。

　7.3

　泡沫温拌沥青混合料性能 泡沫温拌沥青混合料的性能应符合现行《公路沥青路面施工技术规范》（JTG F40）对热拌沥青混合料的性能要求。路况调查及适用性判定。

　8

　泡沫温拌沥青混合料施工 8.1

　泡沫温拌沥青混合料的生产设备 8.1.1

　泡沫温拌沥青现场生产时应采用与拌合设备配套的专用发泡设备。

　8.1.2

　泡沫温拌沥青生产设备应包括供水系统、发泡系统、热沥青添加系统及控制系统。

　8.1.3

　发泡设备应能高效、稳定的生产出满足要求的泡沫温拌沥青，能准确定量设定沥青和用水量的比例、流量、定时、压力等参数。

　8.1.4

　在施工之前，预设置泡沫温拌沥青生产设备的工作参数，试制泡沫温拌沥青，并对其性能评价，确定泡沫温拌生产设备的工作参数。

　8.2

　泡沫温拌沥青混合料的拌制 8.2.1

　根据确定的最佳沥青用量和最佳用水量设定拌合设备及发泡设备的各项参数。

　8.2.2

　现场拌合时的沥青发泡水温为常温。

　8.2.3

　泡沫温拌沥青在现场加工时，沥青发泡时的加热温度应根据不同的沥青类型通过试验确定。道路石油沥青发泡时的加热温度宜控制在 145℃～155℃范围，SBS 改性沥青发泡时的的加热温度宜控制在 160℃～170℃范围，工厂化复合改性橡胶沥青与 TLA 改性沥青发泡时的的加热温度宜控制在 165℃～ 175℃范围。

　8.2.4

　泡沫温拌沥青混合料的现场拌制温度，根据实践经验确定。通常宜较热拌沥青混合料的拌合温度降低 30℃～50℃。拌合温度的确定可根据泡沫温拌沥青混合料拌合电流值的试验方法确定，详见本规范附录 D。道路石油沥青、SBS 改性沥青及工厂化复合改性橡胶沥青的现场拌制温度，可参考表 6 执行。

　DB ××/T ×××—20××

　8 表 6 泡沫温拌沥青混合料拌合温度 工

　序 道路石油沥青 SBS 改性沥青 工厂化复合改性橡胶沥青 TLA 改性沥青 沥青发泡时加热温度（℃）

　145～155 160～170 165～175 165～175 集料加热温度（℃）

　150～170 170～180 170～180 170～180 混合料出料温度（℃）

　120～140 130～155 135～155 135～155 混合料贮存温度（℃）

　贮料过程中温度降低不超过 10 8.2.5

　拌合时间不宜少于 30s（湿拌时间），其中干拌时间不少于 5～10s，拌合的沥青混合料应均匀一致、无花白料、无结团成块或严重的粗细料分离现象，不符合要求时不得使用。

　8.2.6

　泡沫温拌沥青混合料拌制的其他要求，应符合现行《公路沥青路面施工技术规范》（JTG F40）对热拌沥青混合料拌制的要求。

　8.3

　运输 泡沫温拌沥青混合料运输时，应参照现行《公路沥青路面施工技术规范》（JTG F40）热拌沥青混合料运输的要求。

　8.4

　摊铺及碾压 8.4.1

　摊铺机熨平板需至少提前半小时预热或预热至 100℃以上。应严格控制摊铺速度，避免摊铺面因过薄而出现拉带裂缝。在泡沫温拌 SBS 改性沥青或者低温条件施工时，应尽量避免在摊铺面进行人工踩踏及补料等操作。

　8.4.2

　根据混合料的级配类型，选择合理的压路机组合方式及碾压要求，以达到最佳碾压效果。

　8.4.3

　具体的碾压组合可参照现行《公路沥青路面施工技术规范》（JTG F40）推荐或根据试验段试铺情况确定。

　8.4.4

　气候不利因素较多时，轮胎压路机进行初压有助于保证压实效果，但是应视结构层而定，为了沥青表面层避免产生较为明显的轮迹，需尽早安排钢轮振动压路机压实。

　8.4.5

　泡沫温拌沥青混合料摊铺及碾压的其他要求，应符合现行《公路沥青路面施工技术规范》（JTG F40）对热拌沥青混合料的要求。

　8.5

　施工温度 8.5.1

　泡沫温拌沥青混合料的摊铺和初压温度一般比热拌沥青混合料至少降低 20℃。道路石油沥青、SBS 改性沥青及工厂化复合改性橡胶沥青制备的泡沫温拌沥青混合料的最低施工温度可按照表 7 规定。

　表 7 泡沫温拌沥青混合料的施工温度范围 施工工序 道路石油沥青 SBS 改性沥青 工厂化复合改性橡胶沥青 TLA 改性沥青 摊铺温度 （℃）

　正常施工，高于 115 125 130 130 低温施工，高于 120 130 135 135 碾压温度 （℃）

　正常施工，高于 110 120 125 125 低温施工，高于 115 125 130 130 8.5.2

　寒冷季节遇大风、降温天气不得进行施工。每天开工时宜采用较高温度的混合料进行施工。

　DB ××/T ×××—20××

　9 8.6

　养生和开放交通 泡沫温拌沥青混合料路面的养生和开放交通，应符合现行《公路沥青路面施工技术规范》 （JTG F40）

　对热拌沥青混合料路面的要求。

　9

　试验方法 9.1

　集料 粗集料、细集料和矿粉各指标的试验方法，应按照现行《公路工程集料试验规程》（JTG E42）要求进行。

　9.2

　沥青及沥青混合料 泡沫温拌沥青及泡沫温拌沥青混合料各指标的试验方法，应按照现行《公路工程沥青及沥青混合料试验规程》（JTG E20）要求进行。

　10

　施工质量与检查验收 10.1

　检验形式 产品检验包括原材料检验和沥青混合料出厂检验。

　10.2

　原材料检验 原材料各指标的试验均按照本规范和相应的规范、规程进行。

　10.3

　泡沫温拌沥青混合料检验 10.3.1

　泡沫温拌沥青混合料生产过程中，必须按...