Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Lightweight high-strength durable anti-cracking concrete and preparation process thereof
The invention discloses lightweight high-strength durable anti-cracking concrete and a preparation process thereof, and belongs to the field of concrete.The lightweight high-strength durable anti-cracking concrete is provided with steel fibers, alkali-resistant glass fibers, Portland cement, polypropylene fibers and ceramsite, the ceramsite with the large particle size is adopted, the water consumption of per cubic meter of concrete is reduced by 20-25 kg, and the cement is correspondingly reduced by 2-35 kg, so that the dry shrinkage of the concrete is reduced, and the service life of the concrete is prolonged. The lignin is synchronously added, the concrete mixing water is reduced, the initial setting time is delayed, and the ceramsite is humidified, so that the moisture in the ceramsite is uniformly fed back through the steel fiber, the alkali-resistant glass fiber, the polypropylene fiber and the lignin which are attached to the surface of the ceramsite, the cement is further fully hydrated, the water-cement ratio of the contact surface of the aggregate and the cement is reduced, and the water-cement ratio of the contact surface of the aggregate and the cement is reduced. The ceramsite and set cement interface are combined more tightly, the performance of the ceramsite concrete is improved, meanwhile, heat conduction of the steel fibers is matched, heat in the ceramsite concrete is evenly distributed, and cracks caused by thermal expansion and dry shrinkage are prevented.
本发明公开了轻质高强耐久抗开裂混凝土及其制备工艺，属于混凝土领域，通过设置钢纤维、耐碱玻璃纤维、硅酸盐水泥、聚丙烯纤维和陶粒，其通过采用粒径较大的陶粒，使其每m3混凝土减少用水量20～25kg，水泥也相应减少2～35kg,从而降低混凝土的干缩，同步的加入木质素，减少混凝土拌合用水，推迟初凝时间，配合陶粒加湿处理，其湿度通过表面依附的钢纤维、耐碱玻璃纤维、聚丙烯纤维和木质素，对将陶粒内部的水分均匀的反哺，使水泥进一步充分水化，降低了集料与水泥接触面的水灰比，陶粒与水泥石界面结合更加紧密，改善陶粒混凝土的性能的同时，配合钢纤维的热传导使其内部热量均匀分布，防止出现热胀和干缩出现裂纹。
Lightweight high-strength durable anti-cracking concrete and preparation process thereof
The invention discloses lightweight high-strength durable anti-cracking concrete and a preparation process thereof, and belongs to the field of concrete.The lightweight high-strength durable anti-cracking concrete is provided with steel fibers, alkali-resistant glass fibers, Portland cement, polypropylene fibers and ceramsite, the ceramsite with the large particle size is adopted, the water consumption of per cubic meter of concrete is reduced by 20-25 kg, and the cement is correspondingly reduced by 2-35 kg, so that the dry shrinkage of the concrete is reduced, and the service life of the concrete is prolonged. The lignin is synchronously added, the concrete mixing water is reduced, the initial setting time is delayed, and the ceramsite is humidified, so that the moisture in the ceramsite is uniformly fed back through the steel fiber, the alkali-resistant glass fiber, the polypropylene fiber and the lignin which are attached to the surface of the ceramsite, the cement is further fully hydrated, the water-cement ratio of the contact surface of the aggregate and the cement is reduced, and the water-cement ratio of the contact surface of the aggregate and the cement is reduced. The ceramsite and set cement interface are combined more tightly, the performance of the ceramsite concrete is improved, meanwhile, heat conduction of the steel fibers is matched, heat in the ceramsite concrete is evenly distributed, and cracks caused by thermal expansion and dry shrinkage are prevented.
本发明公开了轻质高强耐久抗开裂混凝土及其制备工艺，属于混凝土领域，通过设置钢纤维、耐碱玻璃纤维、硅酸盐水泥、聚丙烯纤维和陶粒，其通过采用粒径较大的陶粒，使其每m3混凝土减少用水量20～25kg，水泥也相应减少2～35kg,从而降低混凝土的干缩，同步的加入木质素，减少混凝土拌合用水，推迟初凝时间，配合陶粒加湿处理，其湿度通过表面依附的钢纤维、耐碱玻璃纤维、聚丙烯纤维和木质素，对将陶粒内部的水分均匀的反哺，使水泥进一步充分水化，降低了集料与水泥接触面的水灰比，陶粒与水泥石界面结合更加紧密，改善陶粒混凝土的性能的同时，配合钢纤维的热传导使其内部热量均匀分布，防止出现热胀和干缩出现裂纹。
Lightweight high-strength durable anti-cracking concrete and preparation process thereof
轻质高强耐久抗开裂混凝土及其制备工艺
ZHOU XIANG (Autor:in) / CHEN XIAOWEI (Autor:in) / YU DONGLIN (Autor:in) / YUAN HUIRAN (Autor:in)
16.05.2023
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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