Self-waterproof materials for concrete structures include magnesium oxide expansive agent, calcium high-performance expansive agent and hydration heat inhibitor, which can realize self-waterproofing of concrete engineering structures by adding different ways into concrete. According to the differentiated characteristics of each project, the adding method of structural self-waterproof materials for concrete projects is customized. In the process of realizing structural self-waterproofing, the whole process of professional technical service and refined construction management are provided to ensure the ideal anti-cracking and waterproof effect.

Magnesium oxide expansive agent, calcium high-performance expansive agent or hydration heat inhibitor are mixed into concrete, and the whole process application technical service is used to effectively compensate the shrinkage of concrete, realizing the self-waterproofing of concrete engineering structure, and simplifying the construction technology such as temperature control measures. Adopting continuous pouring in warehouse, replacing or less using long intermittent pre-cooling aggregate water pipe cooling and other cooling measures, together with surface protection, can achieve the effect of avoiding or reducing concrete cracking, thus simplifying the construction, speeding up the project construction and reducing the project investment;  The material shortens the use benefit of putting the construction period into operation ahead of schedule and reduces the project construction management fee and project loan interest; Scientific protective measures are put forward to reduce the engineering maintenance cost, which has remarkable economic benefits.

The material is suitable for underground waterproofing works, non-underground waterproofing works with special requirements, large-volume concrete structures or space thin-wall structures with crack control requirements, etc., and is widely applied to shrinkage-compensating concrete works, waterproof concrete works, super-long structural concrete works, prestressed concrete works, concrete filled steel tubes, high-performance concrete works, etc. in ordinary civil construction fields and in exclusive fields such as large-scale water conservancy, nuclear power, petroleum, transportation, national defense, fabricated houses, etc.

 Zhushan Lake Tunnel