Research on the optimization of the performance of hybrid fiber abrasion-resistant concrete based on orthogonal test
In order to improve the performance of the flow surface of hydraulic structures against the impact and wear of high-speed sand-laden water flow,an orthogonal experiment was designed to study the influence of polyvinyl alcohol fiber,polypropylene fiber and steel fiber on the compressive properties,splitting tensile properties and impact and wear-resistance of C35 impact and wear-resistant concrete at three dosage levels.And based on the concept of value engineering,determine the optimal fiber content within the test range.The results show that adding the above three types of fibers to concrete will slightly reduce the compressive strength of concrete,but it can significantly increase the splitting tensile strength and impact and wear-resistance of concrete.Among them,the PVA fiber content level has a significant impact on the split tensile strength of concrete,and the PVA fiber and PP fiber content levels have a significant impact on the impact and wear-resistance of concrete.Considering the performance and cost of concrete comprehensively,the impact and wear-resistant concrete mix with 1 kg/m3 PVA fiber and 1 kg/m3 PP fiber is used to achieve the best production efficiency.
impact and wear-resistant concreteorthogonal experimentvariance analysisfibermechanical propertyvalue engineering