GRC構(gòu)件大都是裝飾性構(gòu)件，用戶也不接受看得見的裂縫。所以，一旦出現(xiàn)裂縫，就是很大的麻煩。防止GRC構(gòu)件裂縫的對策包括什么呢？下面
山東GRC構(gòu)件廠家為您講解。
GRC components are mostly decorative components, and users do not accept visible cracks. Therefore, once cracks appear, it is a big trouble. What are the countermeasures to prevent cracks in GRC components? Next, Shandong GRC component manufacturer will explain to you.
（1）必須使用耐堿玻纖。
(1) Alkali resistant glass fiber must be used.
（2）選用低收縮率水泥。
(2) Low shrinkage cement shall be selected.
（3）在..GRC強度等力學(xué)性能的前提下，選用強度等級低的水泥。
(3) At On the premise of mechanical properties such as GRC strength, cement with low strength grade shall be selected.
（4）禁止使用過期或受潮水泥。
(4) It is prohibited to use expired or damp cement.
（5）使用低堿水泥時，為防止碳化，宜涂刷表面防護劑。
(5) When low alkali cement is used, surface protective agent should be applied to prevent carbonization.
（6）小于0.15mm的細骨料不超過10%。
(6) Fine aggregate less than 0.15 mm shall not exceed 10%.
（7）慎重使用輕質(zhì)、軟質(zhì)、彈性模量低和吸水率高的骨料。
(7) Use lightweight, soft, low elastic modulus and high water absorption aggregates with caution.
（8）含泥量大的骨料清洗后使用。
(8) The aggregate with large mud content shall be used after cleaning.
（9）減水劑使用應(yīng)適量，應(yīng)慎重使用早強劑。
(9) The water reducing agent shall be used appropriately, and the early strength agent shall be used cautiously.
（10）使用人工砂需控制石粉含量。
(10) The content of stone powder shall be controlled when using artificial sand.
（11）摻加聚合物。
(11) Add polymer.
（12）在強度的前提下，減少水泥用量（或增加砂子用量），灰砂比以1∶1為宜。
(12) On the premise of strength, reduce the amount of cement (or increase the amount of sand), and the lime sand ratio should be 1 ∶ 1.
（13）水灰比宜控制在0.3～0.4之間。（14）玻纖含量符合規(guī)范要求。
(13) The water cement ratio should be controlled between 0.3 and 0.4. (14) The glass fiber content meets the specification requirements.
（15）顏料摻量不宜超過6%。（16）構(gòu)件設(shè)計和制作避免斷面厚度突變。
(15) The pigment content should not exceed 6%. (16) The design and fabrication of components shall avoid abrupt changes in section thickness.
（17）連接龍骨與GRC板的錨桿避免剛度過大，或太粗、或太短。
(17) The anchor rod connecting keel and GRC plate shall not be too large, too thick or too short.
（18）轉(zhuǎn)角和大折邊構(gòu)件，兩個方向的錨桿應(yīng)避免形成剛性約束。
(18) For corner and large flange members, the anchor rod in two directions shall avoid forming rigid constraints.
（19）在同一受力方向上只布置1個剛性錨桿，其余都是柔性錨桿。
(19) Only one rigid anchor bolt is arranged in the same stress direction, and the rest are flexible anchors.
（20）GRC墻板的重力錨桿應(yīng)為下托式，以避免GRC板受拉。
(20) The gravity anchor rod of GRC wallboard shall be of the down support type to avoid tension of GRC wallboard.
（21）表面質(zhì)感層的干縮率不大于基層GRC的干縮率。
(21) The drying shrinkage of the surface texture layer shall not be greater than that of the base GRC.
（22）橫向構(gòu)件頂板設(shè)置排水坡度設(shè)計，防止積水積冰。
(22) The top plate of transverse member is designed with drainage slope to prevent ponding and ice accumulation.
（23）安裝結(jié)點應(yīng)當(dāng)有3個方向的誤差調(diào)整空間，避免安裝時“強擰”或焊接。
(23) The installation node shall have error adjustment space in three directions to avoid "forced tightening" or welding during installation.
（24）一個構(gòu)件的安裝結(jié)點應(yīng)設(shè)計成1個固定結(jié)點和3個活動結(jié)點的組合。
(24) The installation node of a component shall be designed as a combination of one fixed node and three active nodes.
Due to the thin thickness of GRC members, cracks are easy to penetrate, resulting in weakening or even loss of bearing capacity. So you can use the above countermeasures as a reference and pay attention to us http://www.nyqaac.com Learn more!
