Study Of Repair Mortar Containing Titanium Slag Composite Slag

In today's harsh ecological environment, weather and use overload in various of environments such as highways, marine, hydraulic, acid rain and carbonation, the burden on the environment is increasing day and day, In the life cycle, civil engineering and construction of concrete structures is serious shortage on the durability and safety. The costs of maintenance and repair increase high-speed, at the same time, it is timely to treatment the various types of waste residue emissions. Study on the efficient use of new repair preparated by titanium can effectively solute these problems.Research to take advantage of low efficiency titanium Slag, lithium slag, limestone powder as the main raw materials, can improve their efficiency and increase their added value and improve the environment. At the same time, it can meet the concrete structure maintenance and repair under the conditions of the different environments, ensure the structure of the durability and safety in the life cycle and produce a good economic and environmental benefits.This study is on the basis of research results such as the super high strength is achieved successfully where cement can be replaced with super-fine limestone powder and titanium slag powder[1], a complex mineral superfine powder is made by grinding the mixs of slag, silica fume and titanium slag in certain proportion, the concrete's resistance to sulfate attack and acid rain is enhanced greatly, powder is an effective way to reduce environment pollution and improve durability of concrete under severe conditions[2].This study used a superplasticizer and ererted"both added"technic of various mineral powders admixtures, used grinded titanium slag as the major mineral admixture, add with slag, lithium slag, fly ash, limestone powder, modified and ultra-fine grinding admixture according to the different characteristics of materials. And this study used ultra-fine powder and ererted"both added"technic to study the impact on the repair mortar's work performance, mechanical properties, bond strength, wear resistance performance and shrinkage.Five kinds of repair mortars with diffetent properties had been prepared on the condition of lab, The results showed that titanium slag can be used to the effective components of the ordinary portland cement-based repair mortar. Titanium Slag admixture replace the basis of 20% to 30% of the cement can be produced repair mortar with good performance and high-strength. Even titanium Slag and other mineral admixture such as slag, lithium slag, fly ash, limestone powder-doped equivalent to replace 20 percent to 50 percent of the cement, it also can be prepared the excellent performance of high-strength mortar repair.Incorporation with titanium Slag can increase the repair mortar bending strength, reduce repair mortar brittle, and the mortar can be used to repair the concrete pavement, building repair, and so on.Using bend strength as appraisal index to evaluate the bond properties between the old and new material. Preparation of the three repair materials were being repaired broken Titanium Slag composite mortar residue, bonded bending strength test results showed that the new and old mortar has a good adhesive properties. 28d bond bending strength to achieve the minimum 5.7 MPa, up to 6.9 MPa.Added with titanium slag and other mineral powders admixtures, The repairs mortars has good durability. Titanium slag can reduce the shrinkage and improve the wear-resisting performance of the mortar. Both added with lithium, thewear-resistance performance of the mortar can be further enhanced,and the shrinkage is reduced. At the same time, the repair mortars has high strength, So it can be used to repair the road with high requirements in strength and wear-resistance.