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濟南水泥穩(wěn)定碎石取不出完整的芯樣什么原因？

來源：http://m.guixin.net.cn/ 日期：2022-05-04

　　水泥穩(wěn)定碎石在進行取樣的時候，按照相關(guān)技術(shù)要求來講，是應(yīng)該能去取出完成的鉆件來才對，但是有的時候為什么會取不出完整的芯樣呢？

　　When cement stabilized gravel is sampled, according to the relevant technical requirements, it should be able to take out the completed drilling parts, but sometimes why can not take out the complete core sample?

　　水泥用量偏少造成骨料之間膠結(jié)不好，達不到強度；沒有完全按照規(guī)范要求進行養(yǎng)護，按規(guī)范要求每一段碾壓完成并經(jīng)壓實度檢查合格后，應(yīng)立即養(yǎng)生，宜采用濕砂進行養(yǎng)生，砂層厚度為7cm~10cm。也可采用瀝青乳液進行養(yǎng)生，無述條件時，也可用灑水車結(jié)常灑水進行養(yǎng)生。養(yǎng)生期不宜少于7天。

　　Less cement amount leads to poor cementation between aggregates, which can not reach the strength; Maintenance is not carried out completely in accordance with the requirements of the specification. After each section is rolled according to the requirements of the specification and passed the compacting degree check, it should be kept in good health immediately. Wet sand should be used for health preservation, and the thickness of sand layer is 7cm~10cm. Asphalt emulsion can also be used for health, no condition, can also be used sprinkler knot often sprinkler health. The health preservation period should not be less than 7 days,

　　水泥穩(wěn)定碎石層原材料級配不好；含水量不合適，以于水泥不能在混合料中完全水化和水解，水泥對碎石的穩(wěn)定作用沒發(fā)揮，影響水泥穩(wěn)定碎石的強度；水泥選用不當，普通硅酸鹽水泥，礦渣硅酸鹽水泥和火山灰質(zhì)硅酸鹽水泥都可用水泥穩(wěn)定碎石，但應(yīng)選用初凝時間3h以上和終凝時間較長（宜在6h以上）。

　　The gradation of raw materials of cement-stabilized macadam layer is not good; The water content is not appropriate, so that cement can not be completely hydrated and hydrolyzed in the mixture, cement on the stability of gravel did not play, affecting the strength of cement stabilized gravel; Cement selection is not appropriate, ordinary Portland cement, slag Portland cement and volcanic ash Portland cement can be used to stabilize the cement gravel, but should choose the initial setting time of more than 3h and the final setting time is longer （should be more than 6h）。

　　不宜使用快硬水泥，早強水泥以及已受潮變質(zhì)的水泥；拌合得不均勻，且沒在含水量下充分壓實，以及施工碾壓時間拖的過長，破壞了已結(jié)硬的水泥膠凝，使其強度下降。

　　It is not suitable to use fast hard cement, early strength cement and cement which has been affected by moisture deterioration; Mixing is not uniform, and not fully compacted in the best water content, and the construction of rolling time drag too long, destroyed the hardened cement gelation, so that its strength decreased.

　　怎么預(yù)防呢？改進濟南水泥穩(wěn)定碎石的拌合工藝，盡量避免離析的產(chǎn)生，施工人員要加強對水泥劑的控制，發(fā)現(xiàn)了問題要及時改進與處理；抖合的計量器具要在開工前送計量質(zhì)量檢測中心進行檢定，以保證稱量的準確無誤；在運輸過程中要避免使用小型送料車，混合料要覆蓋，減少運輸途中水分的蒸發(fā)。

　　How to prevent it? Improve ji 'nan cement stable gravel mixing process, as far as possible to avoid segregation, construction personnel to strengthen the control of cement agent, found the problem to improve and deal with in time; The dithering measuring instruments shall be sent to the measurement quality testing center for verification before starting work to ensure the accuracy of weighing; In the transportation process to avoid the use of small feeder, mixture to cover, reduce the evaporation of water during transportation.

　　濟南水泥穩(wěn)定碎石取不出完整的芯樣什么原因？以上便是原因以及有關(guān)預(yù)防措施，如果您在取樣時還是產(chǎn)生類似問題，您可以通過網(wǎng)站m.guixin.net.cn來聯(lián)系我們進行咨詢。

　　Ji 'nan cement stable gravel can not take out the complete core sample what reason? The above are the reasons and relevant preventive measures. If you still have similar problems when sampling, you can contact us through the website m.guixin.net.cn for consultation.

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