公司新闻
水泥稳定碎石出现裂缝的原因以及处理
来源：/ 日期：2022-04-01
水泥稳定碎石具体很好的特点，比如强度高、水稳定性好等，适用于大交通中轴在道路的基层，但它的施工是一个过程，免不了会出现这样那样的问题，这不，近来有人反映说出现了裂缝问题，那么原因是什么呢？怎么去处理呢？
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?
水泥稳定碎石出现裂缝的原因
The reason for the crack of cement stabilized macadam
水泥稳定碎石裂缝是指水泥稳定碎石基层混合料经水泥养护、消水后，表面出现的轻微裂缝，并延伸深层和横向，贯穿整个基层。裂缝的产生会导致板的整体应力状态，从而在一定程度上破坏基层。如果裂缝进一步发展，将产生反射裂缝，导致路面出现裂缝或断板。
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.
水泥稳定碎石混合料的含水量远高于合适的含水量，水泥稳定碎石基层的干缩应变随混合料含水量的增加而增大；水泥品种的选择；水泥用量过大，级配不好；水泥稳定碎石养护不及时、不规范；温差的原因。
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.
水泥稳定碎石出现裂缝的处理
Crack treatment of cement stabilized macadam
注意原材料的选择，保证级配良好，在满足设计强度的前提下减少水泥用量；水泥的选择：不同类型水泥的干缩不同。普通硅酸盐水泥的干缩很小，其次是火山灰硅酸盐水泥和矿渣水泥。因此，选择合适的水泥可以在一定程度上减少干缩裂缝。
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.
控制细骨料的数量，细骨料<0.075mm的颗粒含量应尽量小于5%~7%；4）为控制含水量，应严格按照水泥稳定碎石配合比设计控制含水量，使其接近合适的含水量，减少因用水量不当造成的人为裂缝。
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.
合理选择施工时间。尽量在夏季高温季节到来之前选择施工时间。如果在夏季高温季节施工，尽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.
加强养护。由于干缩破坏发生在早期，及时使用土工布、麻袋布或薄膜进行良好养护，可以防止水泥稳定碎石层混合料中的水化和水分过度蒸发，造成表面干缩裂缝现象。
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.
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 website for consultation!
公司地址：济南市商河县贾庄镇民营经济创业园
公司名称:2023澳门正版资料免费 
备案号：