The cold recycling of asphalt pavement is a new complete system of old pavement reconstruction by using the integrated recycling equipment, adding materials, one-time mixing and forming process, and paving the new structural surface. The quality of recycled pavement is directly related to the factors of recycled technology, recycled materials, recycled mix design and surface structure. This paper discusses the construction technology and quality control of cold recycled base.

1、冷再生基層施工工藝

1. Construction technology of cold recycling base

結(jié)合五一路翻修工程，對冷再生基層施工工藝及其質(zhì)量控制進(jìn)行探討，為冷再生基層在開封市的推廣應(yīng)用提供參考經(jīng)驗(yàn)。工程實(shí)踐證明，只要科學(xué)組織，嚴(yán)格控制，冷再生基層的路用性能更好，而且比常規(guī)維修方法更顯優(yōu)勢。

Combined with the renovation project of Wuyi Road, this paper discusses the construction technology and quality control of cold recycling base, so as to provide reference experience for the popularization and application of cold recycling base in Kaifeng City. Engineering practice has proved that as long as the scientific organization and strict control, the road performance of cold recycling base is better, and it has more advantages than conventional maintenance methods.

2、準(zhǔn)備工作

2. Preparation

再生前的各項(xiàng)準(zhǔn)備工作在施工前到位，確保工期正常進(jìn)行。主要內(nèi)容包括：人員準(zhǔn)備、機(jī)械準(zhǔn)備、材料準(zhǔn)備、交通協(xié)調(diào)及后勤保障。

All preparations before regeneration are in place before construction to ensure the normal progress of construction period. The main contents include: Personnel Preparation, machinery preparation, material preparation, traffic coordination and logistics support.

3、材料要求：

3. Material requirements:

水泥選用強(qiáng)度等級(jí)為32.5、初凝時(shí)間≥3h、終凝時(shí)間≤10h且≥6h硅酸鹽或普通硅酸鹽水泥。水泥應(yīng)具有良好的工作性、低水化、高后期強(qiáng)度、耐久性、耐腐蝕性和抗裂性能。

Portland or ordinary portland cement with strength grade of 32.5, initial setting time ≥ 3h, final setting time ≤ 10h and ≥ 6h is selected. Cement should have good workability, low hydration, high late strength, durability, corrosion resistance and crack resistance.

4、機(jī)械要求：

4. Mechanical requirements:

工程施工過程通過再生機(jī)組來完成，再生機(jī)組包括：冷再生主機(jī)、水泥稀漿車、平地機(jī)、壓路機(jī)等。

The construction process of the project is completed by the regeneration unit, which includes: cold regeneration host, cement slurry truck, grader, roller, etc.

5、人員要求：

5. Personnel requirements:

工程技術(shù)人員及機(jī)械操作人員應(yīng)經(jīng)過冷再生培訓(xùn)并經(jīng)過考核合格后方可上崗。

Engineering and technical personnel and mechanical operators should be trained in cold regeneration and pass the examination before they can take up their posts.

山東途暢路橋工程有限公司擁有200多臺(tái)套的工程施工機(jī)械和一支400余人技術(shù)力量過硬的施工隊(duì)伍，設(shè)備精良、技術(shù)精湛，實(shí)力。公司涉及業(yè)務(wù)范圍廣泛，主要承接：土石方工程；園林綠化工程；路基工程施工，路面工程施工，灰土、改良土施工；舊路改造、就地冷再生施工；地基強(qiáng)夯施工；雨水、污水、自來水、燃?xì)?、原油、電纜、管線工程施工和非開挖定向鉆施工；橋梁工程施工；隧道工程施工；房屋建筑和市政基礎(chǔ)設(shè)施項(xiàng)目工程總承包；砂石料加工。

Shandong Tuchang road and Bridge Engineering Co., Ltd. has more than 200 sets of advanced construction machinery and a construction team of more than 400 people with excellent technical force, excellent equipment, exquisite technology and strong strength. The company covers a wide range of business, mainly undertake: earthwork engineering; Landscape engineering; Subgrade engineering construction, pavement engineering construction, lime soil, improved soil construction; Old road reconstruction, cold recycling construction on site; Foundation dynamic compaction construction; Rainwater, sewage, tap water, gas, crude oil, cable, pipeline engineering construction and Trenchless Directional Drilling Construction; Bridge engineering construction; Tunnel construction; General contracting of housing construction and municipal infrastructure projects; Aggregate processing.