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水泥穩(wěn)定碎石出現(xiàn)裂縫的原因以及處理

來源：http://shyy66.com/ 日期：2022-04-01

　　水泥穩(wěn)定碎石具體很好的特點(diǎn)，比如強(qiáng)度高、水穩(wěn)定性好等，適用于大交通中軸在道路的基層，但它的施工是一個(gè)過程，免不了會(huì)出現(xiàn)這樣那樣的問題，這不，近來有人反映說出現(xiàn)了裂縫問題，那么原因是什么呢？怎么去處理呢？

　　Cement stable gravel specific very good characteristics, such as high strength, good water stability, suitable for large traffic axis in the road at the base, but its construction is a process, inevitably there will be such and such problems, this is not, recently some people reflect that there are cracks, so what is the reason? How to deal with it?

　　水泥穩(wěn)定碎石出現(xiàn)裂縫的原因

　　The reason for the crack of cement stabilized macadam

　　水泥穩(wěn)定碎石裂縫是指水泥穩(wěn)定碎石基層混合料經(jīng)水泥養(yǎng)護(hù)、消水后，表面出現(xiàn)的輕微裂縫，并延伸至深層和橫向，貫穿整個(gè)基層。裂縫的產(chǎn)生會(huì)導(dǎo)致板的整體應(yīng)力狀態(tài)，從而在一定程度上破壞基層。如果裂縫進(jìn)一步發(fā)展，將產(chǎn)生反射裂縫，導(dǎo)致路面出現(xiàn)裂縫或斷板。

　　The crack of cement stabilized macadam refers to the slight crack on the surface of cement stabilized macadam base mixture after cement curing and water elimination, and extends to the deep layer and transverse, running through the whole base. The crack will lead to the overall stress state of the plate, which will destroy the base to a certain extent. If the crack develops further, it will create reflective cracks, which can lead to cracks or broken slabs in the road surface.

　　水泥穩(wěn)定碎石混合料的含水量遠(yuǎn)高于合適的含水量，水泥穩(wěn)定碎石基層的干縮應(yīng)變隨混合料含水量的增加而增大；水泥品種的選擇；水泥用量過大，級配不好；水泥穩(wěn)定碎石養(yǎng)護(hù)不及時(shí)、不規(guī)范；溫差的原因。

　　The moisture content of cement stabilized macadam mixture is much higher than the appropriate moisture content and the dry shrinkage strain of cement stabilized macadam base increases with the increase of moisture content of the mixture. Selection of cement varieties; Cement dosage is too large, bad grading; Cement stabilized gravel maintenance is not timely, not standard; The reason for the temperature difference.

　　水泥穩(wěn)定碎石出現(xiàn)裂縫的處理

　　Crack treatment of cement stabilized macadam

　　注意原材料的選擇，保證級配良好，在滿足設(shè)計(jì)強(qiáng)度的前提下減少水泥用量；水泥的選擇：不同類型水泥的干縮不同。普通硅酸鹽水泥的干縮很小，其次是火山灰硅酸鹽水泥和礦渣水泥。因此，選擇合適的水泥可以在一定程度上減少干縮裂縫。

　　Pay attention to the choice of raw materials, ensure good gradation, reduce the amount of cement under the premise of meeting the design strength; Cement selection: different types of cement dry shrinkage is different. The dry shrinkage of ordinary Portland cement is very small, followed by pozzolanic Portland cement and slag cement. Therefore, choosing proper cement can reduce dry shrinkage crack to a certain extent.

　　控制細(xì)骨料的數(shù)量，細(xì)骨料<0.075mm的顆粒含量應(yīng)盡量小于5%~7%；4）為控制含水量，應(yīng)嚴(yán)格按照水泥穩(wěn)定碎石配合比設(shè)計(jì)控制含水量，使其接近合適的含水量，減少因用水量不當(dāng)造成的人為裂縫。

　　Control the number of fine aggregate, fine aggregate <0.075mm particle content should be less than 5%-7%; 4) In order to control the water content, the water content should be controlled strictly in accordance with the mix ratio design of cement stabilized macadam to make it close to the appropriate water content and reduce artificial cracks caused by improper water consumption.

　　合理選擇施工時(shí)間。盡量在夏季高溫季節(jié)到來之前選擇施工時(shí)間。如果在夏季高溫季節(jié)施工，盡量在上午或晚上施工。

　　Reasonable selection of construction time. Try to choose the construction time before the arrival of the summer high temperature season. If the construction is in the summer heat season, try to work in the morning or evening.

　　加強(qiáng)養(yǎng)護(hù)。由于干縮破壞發(fā)生在早期，及時(shí)使用土工布、麻袋布或薄膜進(jìn)行良好養(yǎng)護(hù)，可以防止水泥穩(wěn)定碎石層混合料中的水化和水分過度蒸發(fā)，造成表面干縮裂縫現(xiàn)象。

　　Strengthen maintenance. Due to the drying shrinkage failure occurs in the early stage, timely use of geotextile, hemp cloth or film for good maintenance, can prevent the cement stabilized gravel layer mixture of hydration and excessive evaporation of water, resulting in the surface drying shrinkage crack phenomenon.

　　以上就是對水泥穩(wěn)定碎石出現(xiàn)裂縫的原因以及處理問題的相關(guān)內(nèi)容解答了，如果您對此還有什么地方不明白的話，歡迎來http://shyy66.com網(wǎng)站進(jìn)行咨詢！

　　The above is the reason for the crack of cement stabilized gravel and the relevant content of the solution to the problem. If you do not understand this, welcome to http://shyy66.com website for consultation!

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