＜目次＞
1. はじめに ························································································· 11.1. 本必携の位置づけ ··································································· 3
1.2. 用語の定義とその解説 ····························································· 6
2. 関連法規と点検体系 ·······································································113. 舗装の種類とその構造特性 ······························································153.1. 概論 ····················································································163.2. アスファルト舗装 ·································································20① 密粒度系アスファルト舗装 ·················································24② ポーラスアスファルト舗装 ·················································263.3. コンクリート舗装 ·································································28① 普通コンクリート舗装························································30② 連続鉄筋コンクリート舗装 ·················································32③ 転圧コンクリート舗装························································343.4. その他の舗装 ·······································································36① 半たわみ性舗装 ·································································36② コンポジット舗装 ······························································37
4. 点検要領に基づくメンテナンスサイクルと点検・診断の方法················414.1. 点検要領に基づくメンテナンスサイクル ··································424.2. 点検・診断の方法 ·································································52
5. アスファルト舗装の損傷事例 ···························································575.1. 概説 ····················································································585.2. ひび割れ··············································································595.2.1. 線状のひび割れ ······························································64① 疲労ひび割れ ····································································64② わだち割れ ·······································································66③ 凍上によるひび割れ ···························································68
5.2.2. 亀甲状のひび割れ ···························································69① 路床・路盤の支持力低下(不足)によるひび割れ·······················69② 融解期の路床・路盤の支持力低下によるひび割れ···················70③ 路床・路盤の沈下によるひび割れ（不等沈下によるひび割れ） ················································71④ アスファルトの劣化・老化によるひび割れ ····························72⑤ 基層の剥離によるひび割れ ·················································73
5.2.3 その他のひび割れ ····························································74① リフレクションクラック·····················································74⑨ 沈下ひび割れ ································································· 147⑩ 不規則ひび割れ ······························································ 148⑪ ポンピングによるエロージョン ········································ 149
6.5. その他の損傷 ···································································· 151① わだち掘れ ···································································· 152② ポットホール ································································· 154③ スケーリング ································································· 155④ ポリッシング ································································· 156
コラム① 舗装の役割 ··········································································18
コラム② IRI（International Roughness Index）とは ····························22
コラム③ 結果的にコンポジット舗装となった区間における目地部のリフレクションクラック ···········································38
コラム④ 使用目標年数の設定 ······························································47
コラム⑤ アスファルト混合物の剥離·················································· 106
付録１ 補修工法の例······································································ 157
付録２ 直轄国道の記録様式 ···························································· 173
参考資料 舗装点検要領（平成 28 年 10 月 国土交通省 道路局） ········· 177② 施工継目のひび割れ ···························································75③ 温度応力ひび割れ ······························································76④ 構造物周辺のひび割れ························································77
5.3. わだち掘れ···········································································79① 路床・路盤の圧縮変形によるわだち掘れ ·······························84② アスファルト混合物の塑性変形によるわだち掘れ···················85③ アスファルト混合物の摩耗によるわだち掘れ·························86
5.4. 縦断方向の凹凸 ····································································87① 単路部等における縦断方向の凹凸 ········································92② 交差点部等における縦断方向の凹凸（コルゲーション） ·········94
5.5. その他の損傷 ·······································································95① 寄り ················································································97② くぼみ ·············································································98③ すべり抵抗性の低下 ···························································99④ ポーラスアスファルト舗装の骨材飛散 ······························· 100⑤ ポーラスアスファルト舗装の空隙づまり，空隙つぶれ ········· 102⑥ ポーラスアスファルト舗装における部分的な寄り（側方流動） ································································· 104
5.6. 緊急補修が必須の損傷 ························································ 109① ポットホール ································································· 110② 段差 ············································································· 112
6. コンクリート舗装の損傷事例 ························································ 115
6.1. 概説 ················································································· 116
6.2. 目地部の損傷 ···································································· 119① 目地材のはみ出し，飛散·················································· 120② 目地部の角欠け ······························································ 122
6.3. 段差 ················································································· 125① 版と版との段差 ······························································ 126② 隣接構造物と版の段差····················································· 128③ 地下埋設物に伴う段差····················································· 130④ アスファルト舗装との継目部の段差 ·································· 132
6.4. ひび割れ··········································································· 135① 横ひび割れ ···································································· 138② 縦ひび割れ ···································································· 140③ Y 型・クラスタ型ひび割れ··············································· 141④ 隅角ひび割れ ································································· 142⑤ D クラック ···································································· 143⑥ 面状・亀甲状ひび割れ····················································· 144⑦ プラスチック収縮ひび割れ ·············································· 145⑧ 円弧状ひび割れ ······························································ 146