钢纤维产物掺入通俗混凝土中,具备优良的抗拉、抗剪、抗压、抗折、抗裂、防震、防渗、防爆等机能,施工造价与平凡混凝土根基持平,使用年限能增至几十年以上,维修次数少,有显着的社会和经济效益。钢纤维搅拌车装料容量应控制车容量的85%。投料时宜先按施工配合比将骨料及钢纤维投入搅拌车中,逼迫搅拌2一3min,让钢纤维与骨料充实搀合,然后参加水搅拌3一5min,并查抄钢纤维是否搅拌均匀。若有钢纤维粘结在一路的征象,应继承搅拌直至钢纤维****疏散成单根为止。搅拌钢纤维硅****接纳程度双轴型强制式搅拌机。纤维硅搅拌罐车在运送到施工现场,应加快滚动2一3min后利用,并查抄有没有结团征象。
Steel fiber products added to ordinary concrete have excellent tensile, shear, compressive, flexural, crack, seismic, anti-seepage, explosion-proof and other functions. The construction cost is on par with ordinary concrete foundations, and the service life can be increased to several decades or more with fewer maintenance times, resulting in significant social and economic benefits. The loading capacity of the steel fiber mixer truck should be controlled at 85% of the truck capacity. When feeding, it is advisable to first put the aggregates and steel fibers into the mixing truck according to the construction mix proportion, force the mixing for 2-3 minutes, let the steel fibers fully mix with the aggregates, then mix with water for 3-5 minutes, and check whether the steel fibers are evenly mixed. If there is a sign of steel fibers sticking together, the stirring should be continued until the steel fibers are dispersed into individual pieces. Stirring steel fiber silicon * * * * Acceptance level dual axis forced mixer. The fiber silicon mixing tank truck should accelerate rolling for 2-3 minutes before being used when transported to the construction site, and check for any signs of agglomeration.
钢纤维混凝土的压实抹平必需在砼初凝前竣事,概况收光要实时举行,****是在浇注完混凝土后举行,收光后的混凝土外貌不要暴露钢纤维。对付密筋梁的产物,应选用小直径振捣棒,而对付钢筋非常麋集的地方,要利用钢筋棍,可以更为密实。
The compaction and leveling of steel fiber reinforced concrete must be completed before the initial setting of the concrete, and the overall polishing should be carried out in real time. * * * * is carried out after pouring the concrete, and the appearance of the polished concrete should not expose the steel fibers. To deal with the products of dense reinforced beams, small diameter vibrating rods should be used, while for places where the steel bars are very dense, steel bars should be used to make them more compact.
钢纤维通常与混凝土混合,在混凝土中掺入钢纤维,可以大幅度提高混凝土的强度,使其具有较强的抗裂性能,一旦混凝土表面或内部出现裂缝,钢纤维就可以得到一定程度的控制,防止裂缝的膨胀,提高工程的抗冲击强度。钢纤维是指以切断细钢丝法、冷轧带钢剪切、钢锭铣削或钢水快速冷凝法制成长径比（纤维长度与其直径的比值,当纤维截面为非圆形时,采用换算等效截面圆面积的直径）为40～80的纤维。混凝土用钢纤维为使钢纤维较均匀地分散于砂浆或混凝土中,并增大纤维的长径比,可使用由水溶性胶粘结在一起成集束状的钢纤维。钢纤维可用冷拔钢丝切断、薄钢板剪切、钢块或钢锭铣削以及熔钢抽纱等方法制造。 无论是混凝土中的小裂缝,还是外部的大裂缝,钢纤维都可以起到很好的阻断作用,而且作用非常明显,这些裂缝很容易被钢纤维的作用所减少。但是如果没有钢纤维,这些小裂缝就可能成为混凝土的潜在威胁。
Steel fibers are usually mixed with concrete, and adding steel fibers to concrete can significantly improve its strength, giving it strong crack resistance. Once cracks appear on the surface or inside of the concrete, steel fibers can be controlled to a certain extent, preventing crack expansion and improving the impact strength of the project. Steel fiber refers to fibers with a length to diameter ratio (the ratio of fiber length to diameter, converted to equivalent cross-sectional area when the fiber section is non circular) of 40-80, which can be obtained by cutting fine steel wires, cutting cold rolled strip steel, milling steel ingots, or rapid condensation of molten steel. Steel fibers used in concrete can be uniformly dispersed in mortar or concrete, and the aspect ratio of the fibers can be increased. Steel fibers bonded together with water-soluble adhesive can be used to form bundles. Steel fibers can be manufactured using methods such as cold drawn steel wire cutting, thin steel plate shearing, steel block or ingot milling, and molten steel drawing. Whether it is small cracks in concrete or large external cracks, steel fibers can have a good blocking effect, and the effect is very obvious. These cracks are easily reduced by the action of steel fibers. But without steel fibers, these small cracks could potentially pose a threat to concrete.