A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
The invention relates to anti-crack concrete and a preparation method thereof, and belongs to the technical field of concrete production.The anti-crack concrete is characterized in that a sulphoaluminate micro-expanding agent is compounded with polypropylene fibers, a waterproof agent and a reinforcing agent to form a novel expanding agent, namely an expanding fiber anti-crack waterproof agent, and the adding amount of fly ash is controlled; a series of tests prove that the sulphoaluminate micro-expansive agent has more excellent performance, the crack resistance and the leakage resistance of concrete are greatly improved besides concrete shrinkage compensation, the sulphoaluminate micro-expansive agent does not contain sodium salt, alkali aggregate reaction of the concrete cannot be caused, the durability is good, the expansive performance is stable, and the strength is continuously improved.
本发明涉及一种抗裂混凝土及其制备方法，属于混凝土生产技术领域，所述抗裂混凝土用硫铝酸盐微膨胀剂再复合聚丙烯纤维、防水剂、增强剂进行组份而形成一种新型膨胀剂列为膨胀纤维抗裂防水剂，并对粉煤灰添加量控制，在进行一系列试验后验证其更具优越性能，在对混凝土补偿收缩外，大大提高了混凝土抗裂性和抗渗漏性能，硫铝酸盐微膨胀剂不含钠盐,不会引起混凝土碱骨料反应，而耐久性良好,膨胀性能稳定,强度持续上升。
The invention relates to anti-crack concrete and a preparation method thereof, and belongs to the technical field of concrete production.The anti-crack concrete is characterized in that a sulphoaluminate micro-expanding agent is compounded with polypropylene fibers, a waterproof agent and a reinforcing agent to form a novel expanding agent, namely an expanding fiber anti-crack waterproof agent, and the adding amount of fly ash is controlled; a series of tests prove that the sulphoaluminate micro-expansive agent has more excellent performance, the crack resistance and the leakage resistance of concrete are greatly improved besides concrete shrinkage compensation, the sulphoaluminate micro-expansive agent does not contain sodium salt, alkali aggregate reaction of the concrete cannot be caused, the durability is good, the expansive performance is stable, and the strength is continuously improved.
本发明涉及一种抗裂混凝土及其制备方法，属于混凝土生产技术领域，所述抗裂混凝土用硫铝酸盐微膨胀剂再复合聚丙烯纤维、防水剂、增强剂进行组份而形成一种新型膨胀剂列为膨胀纤维抗裂防水剂，并对粉煤灰添加量控制，在进行一系列试验后验证其更具优越性能，在对混凝土补偿收缩外，大大提高了混凝土抗裂性和抗渗漏性能，硫铝酸盐微膨胀剂不含钠盐,不会引起混凝土碱骨料反应，而耐久性良好,膨胀性能稳定,强度持续上升。