一、層間剝離 = 路面「貼春聯(lián)翹邊」：不處理半年就爛

　　1、 Interlayer peeling=road surface 'sticking spring couplets and curling edges': if left untreated for half a year, it will rot

　　想象剛鋪的再生路面像貼春聯(lián)，沒(méi)過(guò)多久邊緣就翹邊剝離 —— 某省道冷再生施工后 3 個(gè)月，雨水從剝離縫滲入，路基泡軟后整段路面龜裂，維修成本比施工費(fèi)高 2 倍！層間剝離本質(zhì)是新舊材料「鬧離婚」，這 3 招能讓它們「焊死」不分離。

　　Imagine the newly laid recycled road surface being like spring couplets, and soon the edges will curl and peel off - three months after the cold recycling construction of a certain provincial road, rainwater seeps into the peeling joints, causing the entire road surface to crack after the roadbed is soaked and softened. The maintenance cost is twice as high as the construction cost! The essence of interlayer delamination is the "divorce" between old and new materials, and these three moves can make them "welded together" without separation.

　　二、第一招：舊路面「搓澡」要徹底 —— 像洗碗去油才能粘牢

　　2、 The first trick: The old road surface needs to be thoroughly scrubbed - like washing dishes to remove oil in order to stick firmly

　　1. 銑刨深度「刮骨療毒」

　　1. Milling depth "bone scraping therapy"

　　標(biāo)準(zhǔn)操作：銑刨深度必須穿透松散層，某高速施工用 3D 雷達(dá)掃描舊路面，發(fā)現(xiàn) 10cm 下有隱形松散層，銑刨 15cm 后剝離率降為 0；

　　Standard operation: The milling depth must penetrate the loose layer. A certain high-speed construction used a 3D radar to scan the old road surface and found an invisible loose layer below 10cm. After milling 15cm, the peeling rate decreased to 0;

　　反面教材：某縣路只銑刨 8cm，舊料夾層像「隔層紙」，通車半年后剝離面積超 30%。

　　Negative example: A certain county road only milled 8cm, and the old material interlayer looked like "interlayer paper". After six months of operation, the peeling area exceeded 30%.

　　2. 浮塵清理「干洗消毒」

　　2. Dust cleaning "dry cleaning and disinfection"

　　組合工具：先用銑刨機(jī)自帶吸塵器吸浮塵，再用鋼刷掃縫，某市政工程用「吸 + 掃」組合，舊路面粉塵殘留量＜5g/㎡；

　　Combination tool: First, use the built-in vacuum cleaner of the milling machine to suck up floating dust, and then use a steel brush to clean the seams. A certain municipal project uses a "suction+scan" combination, and the residual amount of flour dust on the old road is less than 5g/㎡;

　　錯(cuò)誤示范：某工地直接用水沖，結(jié)果粉塵遇水成泥，再生層像「粘在泥巴上的紙」，剝離風(fēng)險(xiǎn)增加 4 倍。

　　Error demonstration: A construction site directly flushed with water, resulting in dust turning into mud when it comes into contact with water, and the regenerated layer resembling "paper stuck to mud", increasing the risk of peeling by four times.

　　三、第二招：再生劑「膠水」調(diào)得好 —— 像熬粥濃稠度要?jiǎng)偤?/p>

　　3、 Second move: The regenerant "glue" is well adjusted - like porridge, the consistency should be just right

　　1. 舊料級(jí)配「篩沙子」

　　1. Grading of old materials with "sieved sand"

　　過(guò)篩標(biāo)準(zhǔn)：4.75mm 篩孔通過(guò)率偏差≤5%，某項(xiàng)目舊料含泥量超標(biāo)，加 10% 新集料后，層間粘結(jié)力提升 30%；

　　Screening standard: The deviation of the 4.75mm sieve hole passing rate is ≤ 5%. In a certain project, the mud content of the old material exceeds the standard. After adding 10% new aggregate, the interlayer bonding strength is increased by 30%;

　　案例對(duì)比：某高速?zèng)]篩舊料，再生層像「夾生飯」，剝離處能看到成團(tuán)泥土。

　　Case comparison: A certain highway did not screen old materials, and the recycled layer looked like "undercooked rice", with clumps of soil visible at the peeling point.

　　2. 含水率「測(cè)濕度」

　　2. Moisture content measurement

　　黃金區(qū)間：再生施工時(shí)舊料含水率控制在 6%-8%，某北方工地干燥季噴霧加濕，剝離率比未加濕段低 70%；

　　Golden zone: the moisture content of the old material is controlled at 6% -8% during the recycling construction. In the dry season of a northern construction site, spray humidification, and the stripping rate is 70% lower than that of the non humidified section;

　　極端處理：南方雨季用生石灰預(yù)拌，某項(xiàng)目含水率超 12% 時(shí)，每 1000㎡加 500kg 生石灰，成功控制剝離。

　　Extreme treatment: Pre mixed quicklime is used during the rainy season in the south. When the moisture content of a certain project exceeds 12%, 500kg of quicklime is added every 1000 square meters to successfully control stripping.

　　四、第三招：碾壓工藝「揉面團(tuán)」技巧 —— 像包餃子搟皮要均勻

　　4、 Third move: Rolling process - "Kneading dough" technique - like making dumplings, rolling the dough evenly

　　1. 初壓「拍餅定型」

　　1. Initial pressing "patting cake shaping"

　　鋼輪靜壓：10-12t 鋼輪先靜壓 2 遍，某工地用 12t 輪初壓，再生層密實(shí)度達(dá) 92%，比 10t 輪高 5 個(gè)百分點(diǎn)；

　　Steel wheel static pressure: 10-12t steel wheels are first static pressed twice, and a certain construction site uses a 12t wheel for initial pressure. The density of the regeneration layer reaches 92%, which is 5 percentage points higher than that of a 10t wheel;

　　禁忌操作：某項(xiàng)目直接用膠輪碾壓，再生料像「揉散的面團(tuán)」，層間出現(xiàn)滑移剝離。

　　Taboo operation: A certain project is directly rolled with a rubber wheel, and the recycled material looks like "kneaded dough", causing slippage and peeling between layers.

　　2. 復(fù)壓「搟皮壓實(shí)」

　　2. Re pressing "rolling and compacting the skin"

　　振動(dòng)碾壓：振幅 0.8-1.2mm，某國(guó)道用 1.0mm 振幅復(fù)壓，層間粘結(jié)強(qiáng)度達(dá) 0.6MPa，是 0.5mm 振幅的 1.5 倍；

　　Vibration compaction: amplitude 0.8-1.2mm, a certain national highway uses 1.0mm amplitude re compaction, and the interlayer bonding strength reaches 0.6MPa, which is 1.5 times the amplitude of 0.5mm;

　　速度控制：復(fù)壓速度≤4km/h，某高速超速到 6km/h，再生層出現(xiàn)「魚鱗狀」剝離紋路。

　　Speed control: The re pressing speed is ≤ 4km/h. When a certain highway exceeds the speed limit to 6km/h, "fish scale" peeling patterns appear on the regeneration layer.

　　五、環(huán)境應(yīng)對(duì)「看天氣做飯」—— 雨天別施工，低溫要加溫

　　5、 Environmental response: 'Cooking based on weather' - Do not work on rainy days, warm up in low temperatures

　　1. 雨天「?；痍P(guān)火」

　　1. "Cease fire and turn off fire" on rainy days

　　臨界值：降雨量＞10mm/h 必須停工，某南方項(xiàng)目冒雨施工，再生層像「泡發(fā)的餅干」，剝離率超 80%；

　　Critical value: If the rainfall exceeds 10mm/h, work must be stopped. A certain southern project is being constructed in the rain, and the regeneration layer is like a "soaked biscuit" with a peeling rate of over 80%;

　　補(bǔ)救措施：小雨時(shí)用大功率吹風(fēng)機(jī)吹干路面，某市政工程這樣做，剝離率從 50% 降到 15%。

　　Remedial measure: During light rain, use a high-power hair dryer to dry the road surface. A certain municipal engineering project did this, reducing the stripping rate from 50% to 15%.

　　2. 低溫「開小太陽(yáng)」

　　2. Low temperature "turning on the small sun"

　　施工底線：氣溫＜5℃時(shí)，用紅外加熱板預(yù)熱舊路面至 15℃，某北方項(xiàng)目低溫施工未預(yù)熱，剝離率是正常天氣的 3 倍；

　　Construction bottom line: When the temperature is below 5 ℃, use an infrared heating plate to preheat the old road surface to 15 ℃. A low-temperature construction project in the north did not preheat, and the peeling rate was three times that of normal weather;

　　成本對(duì)比：預(yù)熱多花 2000 元 / 天，卻避免了后期 10 萬(wàn)元返工費(fèi)。

　　Cost comparison: Preheating costs an additional 2000 yuan/day, but avoids a rework fee of 100000 yuan in the later stage.

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