Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Shrinkage-reducing anti-crack concrete doped with fibers and SAP and preparation method thereof
The invention discloses shrinkage-reducing anti-crack concrete doped with fibers and SAP and a preparation method thereof. The concrete comprises water, cement, fly ash, basalt fibers, polypropylene fibers, SAP, gravels, sand and a water reducing agent. The concrete is prepared by uniformly mixing water, cement, fly ash, basalt fibers, polypropylene fibers, SAP, gravels, sand and the water reducing agent according to a mass ratio of (175-184): (300-450): (50-80): (2800-3200): (700-800): (0.57-1.30): (988-1084): (745-798): (4.55-4.78). A three-dimensional network structure formed by the fiberscan support aggregate, the concrete is more uniform, due to the doping of the fibers and the SAP, the crack initiation time can be delayed, the number, the width, the total length and the total cracking area in unit area of cracks are reduced, the release of the internal curing water stored in the SAP promotes the continuous hydration of the unhydrated cement in the concrete, and the generated calcium carbonate and ettringite fill the micro-cracks, thereby realizing the self-healing of the concrete micro-cracks, effectively controlling the number and width of the early shrinkage cracks, enhancing the early strength and durability of the concrete, and lowering the development speed of the micro-cracks.
本发明公开了一种掺加纤维和SAP的减缩抗裂混凝土及其制备方法，混凝土包括水、水泥、粉煤灰、玄武岩纤维、聚丙烯纤维、SAP、碎石、砂及减水剂，水、水泥、粉煤灰、玄武岩纤维、聚丙烯纤维、SAP、碎石、砂及减水剂按照质量比为(175‑184)：(300‑450)：(50‑80)：(2800‑3200)：(700‑800)：(0.57‑1.30)：(988‑1084)：(745‑798)：(4.55‑4.78)混合均匀制成；纤维形成的三维网络结构可以承托骨料，使混凝土更均匀，纤维及SAP的掺入可以延缓裂缝起裂时间，降低裂缝数量、宽度、总长度和单位面积上总开裂面积，SAP中储蓄的内养生水的释放，促使混凝土中未水化的水泥继续水化，生成的碳酸钙及钙矾石填补微小裂缝，实现对混凝土微裂缝自愈合，有效控制早期收缩裂缝的数量及宽度，提高混凝土早期强度及耐久性，降低微裂纹的发育速度。
Shrinkage-reducing anti-crack concrete doped with fibers and SAP and preparation method thereof
The invention discloses shrinkage-reducing anti-crack concrete doped with fibers and SAP and a preparation method thereof. The concrete comprises water, cement, fly ash, basalt fibers, polypropylene fibers, SAP, gravels, sand and a water reducing agent. The concrete is prepared by uniformly mixing water, cement, fly ash, basalt fibers, polypropylene fibers, SAP, gravels, sand and the water reducing agent according to a mass ratio of (175-184): (300-450): (50-80): (2800-3200): (700-800): (0.57-1.30): (988-1084): (745-798): (4.55-4.78). A three-dimensional network structure formed by the fiberscan support aggregate, the concrete is more uniform, due to the doping of the fibers and the SAP, the crack initiation time can be delayed, the number, the width, the total length and the total cracking area in unit area of cracks are reduced, the release of the internal curing water stored in the SAP promotes the continuous hydration of the unhydrated cement in the concrete, and the generated calcium carbonate and ettringite fill the micro-cracks, thereby realizing the self-healing of the concrete micro-cracks, effectively controlling the number and width of the early shrinkage cracks, enhancing the early strength and durability of the concrete, and lowering the development speed of the micro-cracks.
本发明公开了一种掺加纤维和SAP的减缩抗裂混凝土及其制备方法，混凝土包括水、水泥、粉煤灰、玄武岩纤维、聚丙烯纤维、SAP、碎石、砂及减水剂，水、水泥、粉煤灰、玄武岩纤维、聚丙烯纤维、SAP、碎石、砂及减水剂按照质量比为(175‑184)：(300‑450)：(50‑80)：(2800‑3200)：(700‑800)：(0.57‑1.30)：(988‑1084)：(745‑798)：(4.55‑4.78)混合均匀制成；纤维形成的三维网络结构可以承托骨料，使混凝土更均匀，纤维及SAP的掺入可以延缓裂缝起裂时间，降低裂缝数量、宽度、总长度和单位面积上总开裂面积，SAP中储蓄的内养生水的释放，促使混凝土中未水化的水泥继续水化，生成的碳酸钙及钙矾石填补微小裂缝，实现对混凝土微裂缝自愈合，有效控制早期收缩裂缝的数量及宽度，提高混凝土早期强度及耐久性，降低微裂纹的发育速度。
Shrinkage-reducing anti-crack concrete doped with fibers and SAP and preparation method thereof
一种掺加纤维和SAP的减缩抗裂混凝土及其制备方法
GUO YINCHUAN (Autor:in) / DU QINGXIN (Autor:in) / SHEN AIQIN (Autor:in) / LI YUE (Autor:in) / HUANG WU (Autor:in) / WU SHENGLI (Autor:in)
19.06.2020
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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