水泥穩(wěn)定級(jí)配碎石（石屑）基層技術(shù)交底
    本施工段車(chē)行道采用厚15cm 碎石墊層，在路床檢驗(yàn)合格后施工�；鶋|層上鋪設(shè)厚15cm4%水泥穩(wěn)定石屑下基層。再在基上鋪設(shè)30cm6%水泥穩(wěn)定級(jí)配碎石基層；人行道無(wú)墊層，要20cm4水泥穩(wěn)定石屑層%。
一、材料
1、水泥采用普通硅酸鹽水泥、礦碴硅酸鹽水泥，終凝時(shí)間在6小時(shí)以上。要有出廠(chǎng)合格證和廠(chǎng)家的化驗(yàn)報(bào)告。使用需要按規(guī)定進(jìn)行檢驗(yàn)；
2、碎石壓碎值不大于30%，有機(jī)質(zhì)含量不超過(guò)2%，最大粒徑不超過(guò)31.5mm 不含或少含土；
3、水采用自來(lái)水。工程開(kāi)工前，將擬用的材料樣品委托實(shí)驗(yàn)室進(jìn)行混合料組成設(shè)計(jì)，并將結(jié)果報(bào)告監(jiān)理工程師審批。在未開(kāi)始鋪筑水泥穩(wěn)定碎石面基層至少28天前，先在監(jiān)理工程師批準(zhǔn)的地點(diǎn)試鋪一段800m2的試驗(yàn)路段。
試驗(yàn)路段試驗(yàn)方案包括用不同設(shè)備類(lèi)型及技術(shù)，不同的壓實(shí)方法，認(rèn)真檢驗(yàn)所采用的設(shè)備能滿(mǎn)足備料、拌和、攤鋪和壓實(shí)最合適的方案。并確實(shí)次數(shù)、層厚、含水量、干密度等，據(jù)此指導(dǎo)施工。
二、施工工藝
1、拌和
在現(xiàn)場(chǎng)設(shè)攪拌站，機(jī)械攪拌。先檢查水泥、碎石、石屑、水是否符合規(guī)范規(guī)定。配合比嚴(yán)格控制，確保拌和料達(dá)到最佳含水量。
2、攤鋪
按設(shè)計(jì)厚度放出橫斷面標(biāo)高，分層攤鋪，攤鋪用機(jī)械進(jìn)行，機(jī)械無(wú)法到達(dá)的部位，用工攤鋪，蛙式打夯機(jī)夯實(shí)。
3、碾壓
攤鋪整平后，立即碾壓。應(yīng)先輕后重，先邊后中，先慢后快的原則，并在水泥終凝前完成。即先用8T壓路機(jī)碾壓2遍，再用12T壓路機(jī)碾
Cement stabilized gravel (stone chips) primary technical disclosure
    This section of roadway construction with 15cm thick gravel bedding, bed in road construction after passing inspection. Base cushion laid on the thick 15cm4% cement stabilized stone chips to the grassroots. And then to lay 30cm6% in the base of cement stabilized macadam base; sidewalk no cushion to 20cm4 Cement stone chip layer%.
One, materials
1, cement with ordinary Portland cement, mineral slag cement final setting time of 6 hours or more. Certificate and manufacturers have factory laboratory report. Use need to be tested as required;
2, gravel crushing the value of not more than 30%, organic matter content of not more than 2%, the maximum size of not more than 31.5mm or less free with soil;
3, water use tap water. Project started before the sample material will be entrusted with the laboratory Mixture Design, and report the findings supervision engineer for approval. Before the beginning of paving cement stabilized gravel surface at least 28 days before the primary, first approved by the site supervision engineer in test experiments paved a section of 800m2.
Test program includes test sections with different device types and technologies, different compaction methods, carefully test equipment used to meet the preparation, mixing, spreading and compacting the most appropriate solution. And indeed the number, thickness, water content, dry density, according to guide the construction.
Second, construction technology
1, mixing
Mixing station set up at the scene, mechanical agitation. First check the cement, gravel, stone chips, water, compliance with regulations. Mix strictly controlled to ensure optimum mixing water content material.
2, Paving
Released by the thickness of cross-sectional elevation of the design, layered paving, paving machinery to machinery can not reach the site, labor paving, frog tampers tamping.
3, RCC
Paving leveling immediately after rolling. Should light upon the weight, the first edges, the first principle of slow after the fast and completed before the final setting of cement. The first two times with 8T roller compacted, and then roller milled 12T
 

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