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    工业地坪对水泥基面的要求及常见问题的处理方法

    2018-10-30 08:51:56 无锡盛发地坪科技有限公司 阅读

    (一)混凝土基面的总体要求

    (1) General requirements for concrete base surface

    施工环氧地坪前新混凝土地环氧地坪需至少固化28天,含水率低于6%,地面温度5oC以上;表面必须没有灰尘、蜡、旧涂料、油污、油渍、松散的颗粒和浮浆必须去除干净;表面的裂缝和其它缺陷必须进行修复。所有混凝土基面在底涂施工前须进行喷砂抛丸或打磨处理,以提供一个干净坚硬的表面。

    The new concrete floor should be solidified for at least 28 days before the epoxy floor is constructed, with moisture content below 6% and ground temperature above 5oC; the surface must be free of dust, wax, old paint, oil stains, oil stains, loose particles and floating slurry; and the surface cracks and other defects must be repaired. All concrete foundations must be sandblasted or ground to provide a clean and hard surface before priming.

    (二) 混凝土环氧地坪常见缺陷

    (two) common defects in concrete floors

    1、空鼓检测方法:用小锤敲击地坪,对空鼓部位作好标记。

    1, hollowing detection method: using small hammer to beat the floor, marking the hollowing part.

    2、表面裂缝检测方法:目测。

    2. Surface crack detection method: visual inspection.

    3、强度不够检测方法:用强度测试仪测试,强度要求20Mpa以上。

    3, the intensity is not enough testing method: using intensity tester to test, strength requirements of 20Mpa or more.

    4、表面养护不好,起砂起粉严重检测方法:用金属物体或硬的尼龙刷刮刷地坪。

    4. Surface maintenance is not good, sand and powder serious detection methods: with metal objects or hard nylon brush to scrape the floor.

    5、表面有油污等污染物检测方法:目测。

    5, surface contamination detection methods such as oil pollution: visual inspection.

    6、表面潮湿检测方法:湿度测试仪。

    6. Surface moisture detection method: humidity tester.

    用1Mx1M塑料薄膜铺于地面,四周用胶布粘8-24小时, 观察薄膜骨有无水珠或地面有无潮湿情况。

    Spread 1Mx1M plastic film on the ground and stick it around with adhesive tape for 8-24 hours. Observe whether there are water droplets in the bone or wet on the ground.

    (三) 缺陷的修复

    (three) repair of defects

    1、空鼓:将空鼓处切缝或灌注环氧树脂浆料,空鼓处切割去除,重新浇注水泥砂浆或用无溶剂环氧砂浆修补。

    1. Empty drum: cut or pour epoxy resin slurry into the empty drum, cut and remove the empty drum, re-pour cement mortar or repair with solvent-free epoxy mortar.

    2、表面裂缝:切成V字型,用环氧砂浆填补。

    2. Surface cracks: cut into V type, filled with epoxy mortar.

    3、强度不够:去除强度不够的混凝土,重新浇注。

    3, the strength is not enough: remove the strength of the concrete is not enough, re pouring.

    4、表面养护不好,起砂起粉严重:打磨,去除松散部分或重新浇注。

    4, surface curing is not good, starting from the powder is serious: grinding, remove loose parts or re pouring.

    5、表面有油污等污染物:用火枪烧烤或使用除油剂清洗。

    5. There are contaminants on the surface such as oil and grease: barbecued with firearms or cleaned with degreasing agents.

    6、表面潮湿:保持空气流通或强制通风,局部区域可火烤。

    6, surface moisture: maintain air circulation or forced ventilation, local area can be roasted.

    (四) 防潮层的施工建议

    (four) construction proposals for moistureproof layer

    对于地下水位相对较高的地方,需做防潮层,否则会引起环氧涂层鼓泡而脱层破坏。

    For areas with relatively high groundwater level, a damp-proof layer should be made, otherwise the epoxy coating will bubble and delaminate.

    防潮层的施工

    Construction of moistureproof layer

    方法一:在回填土上施工细石粉垫层,并铺设塑料薄膜,搭接宽度不小于10CM,然后浇注混凝土。

    Method 1: The fine stone powder cushion is constructed on the backfill soil, and the plastic film is laid. The overlap width is not less than 10CM, then the concrete is poured.

    方法二:在混凝土基面上涂刷1.5-2mm聚合物防水涂料。适用范围广,在一些有障碍物或基面不平整地面均可使用,然后再做保护层。

    Method two: 1.5-2mm polymer waterproofing coating is applied on the concrete base. Wide range of application, in some obstacles or uneven ground surface can be used, and then do a protective layer.

    水泥砂浆找平层的施工

    Construction of cement mortar leveling layer

    浇注5-10CM的C20以上细石混凝土,最好内加钢丝网。找平层施工完毕后须浇水养护7天,自然风干15天后,方可施工环氧地坪

    Pouring fine stone concrete with 5-10CM above C20 is best to add wire mesh. The leveling layer must be watered for 7 days after completion of construction. After 15 days of natural air drying, the epoxy floor will be constructed.

    (五)沉降缝及伸缩缝的处理

    (five) settlement joints and treatment of expansion joints.

    原有沉降缝应予以保留,在界面处可浇注弹性PU或弹性环氧胶。伸缩缝一般用环氧腻子填补平整,若面积过大,可大于30-50米间隔保留伸缝并灌注弹性PU或弹性环氧胶。

    The original settlement joint should be retained, and elastic PU or elastic epoxy adhesive can be poured at the interface. The expansion joint is usually filled with epoxy putty, if the area is too large, it can be more than 30-50 meters apart to retain the expansion joint and pour elastic PU or elastic epoxy adhesive. 



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