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水泥穩(wěn)定碎石的壓實(shí)控制標(biāo)準(zhǔn)是什么
水泥穩(wěn)定碎石的壓實(shí)控制標(biāo)準(zhǔn)主要依據(jù)公路的等級和用途來確定。以下是一些具體的壓實(shí)控制標(biāo)準(zhǔn):
The compaction control standards for cement stabilized crushed stone are mainly determined based on the grade and purpose of the highway. Here are some specific compaction control standards:
一、壓實(shí)度要求
1、 Compaction requirements
對于高速公路和一級公路的基層,水泥穩(wěn)定碎石材料的壓實(shí)度應(yīng)達(dá)到98%。
For the base course of expressway and first-class highway, the compactness of cement stabilized crushed stone material shall reach 98%.
對于高速公路和一級公路的底基層,水泥穩(wěn)定碎石材料的壓實(shí)度應(yīng)達(dá)到97%。
For subbase of expressway and first-class highway, the compactness of cement stabilized crushed stone material shall reach 97%.
這些壓實(shí)度要求確保了公路基層和底基層的穩(wěn)定性和承載能力。
These compaction requirements ensure the stability and bearing capacity of the highway base and subbase.
二、施工工藝與設(shè)備
2、 Construction technology and equipment
在施工過程中,應(yīng)采用集中廠拌混合料,并使用攤鋪機(jī)攤鋪、壓路機(jī)碾壓的施工工藝。
During the construction process, a centralized factory mixed mixture should be used, and the construction technology of paving with a paver and rolling with a roller should be employed.
壓路機(jī)的選擇應(yīng)根據(jù)具體的施工條件和要求來確定,但通常應(yīng)配備振動壓路機(jī)和輪胎壓路機(jī)進(jìn)行碾壓。
The selection of road rollers should be determined based on specific construction conditions and requirements, but vibration rollers and tire rollers should usually be equipped for rolling.
三、其他控制因素
3、 Other control factors
含水量:應(yīng)在混合料略大于最佳含水量的1個百分點(diǎn)時進(jìn)行碾壓,以確保達(dá)到規(guī)定的壓實(shí)度。
Moisture content: Rolling should be carried out when the mixture is slightly above 1 percentage point of the optimal moisture content to ensure that the specified compaction degree is achieved.
延遲時間:從加水拌和到碾壓終了的延遲時間不應(yīng)超過水泥的初凝時間,以避免混合料硬化和壓實(shí)效果不佳。
Delay time: The delay time from mixing with water to the end of compaction should not exceed the initial setting time of cement to avoid poor hardening and compaction effect of the mixture.
配合比:應(yīng)嚴(yán)格按照設(shè)計要求的配合比進(jìn)行拌和,確?;旌狭系木鶆蛐院头€(wěn)定性。
Mix proportion: The mixing should be strictly carried out according to the design requirements to ensure the uniformity and stability of the mixture.
四、檢測與評定
4、 Testing and evaluation
在施工過程中,應(yīng)定期對壓實(shí)度進(jìn)行檢測,可以采用核子密度儀或灌砂法等方法進(jìn)行檢測。
During the construction process, the compaction degree should be checked regularly, and methods such as nuclear density meter or sand filling method can be used for testing.
評定標(biāo)準(zhǔn)應(yīng)依據(jù)《公路工程質(zhì)量檢驗(yàn)評定標(biāo)準(zhǔn)》等相關(guān)規(guī)范進(jìn)行。
The evaluation criteria should be based on relevant specifications such as the "Quality Inspection and Evaluation Standards for Highway Engineering".
綜上所述,水泥穩(wěn)定碎石的壓實(shí)控制標(biāo)準(zhǔn)是一個綜合性的要求,包括壓實(shí)度、施工工藝與設(shè)備、其他控制因素以及檢測與評定等多個方面。這些標(biāo)準(zhǔn)的嚴(yán)格執(zhí)行可以確保公路基層和底基層的穩(wěn)定性和承載能力,提高公路的使用壽命和安全性。
In summary, the compaction control standard for cement stabilized crushed stone is a comprehensive requirement, including compaction degree, construction technology and equipment, other control factors, and detection and evaluation. The strict implementation of these standards can ensure the stability and bearing capacity of highway base and subgrade, and improve the service life and safety of highways.
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