Setting time is measured using standard consistency of cement paste at a certain temperature and humidity conditions. Counting from the time water was added to the test needle sink paste in 0.5 ~ 1 Omm from the floor until the cement grade when the time required for the initial setting time, then paste begins to lose plasticity;. To test needle sank in paste no more than 1. Omm am today, the time required for the final setting time, then paste completely lost plasticity and entered the hardening stage. Cement foam according to mode of production can be divided into physical foaming and chemical foaming. First, the physical foaming cement foaming agent foams prepared by mechanical equipment, and then added to the foam cement slurry by a cement-based cementitious materials, aggregates, admixtures, additives and water made by the mixing, pouring molding, curing from the insulation sheet (hereinafter referred to as foam cement insulation board). Second, the blowing agent is added chemical foam cement slurry by a cement-based cementitious materials, aggregates, admixtures, additives and water made of cement, after mixing, pouring it in a mold by chemical the reaction for slurry generated inside closed pores, through conservation, cut from the insulation sheet. Cement | Wuhan cement (certified) | Hubei cement provided by the Hongshan District of Wuhan pavilion cement operation. Hongshan District of Wuhan pavilion cement business unit (www.whltsn.com) (www.hbltsn.com) was Wuhan, cement and products leader, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, the maximum Limits to meet customer needs. Wuhan cement leadership with the staff warmly welcome all inquiries negotiations to create a better future Wuhan cement.