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Non explosive demolition powder- NOVABLAST- has been designed for demolition of concrete, rock and boulders in environmentally sensitive areas where vibration must be minimised. It is also suitable for cont rol led spl i t t ing of concrete, rock, boulders and quarrying of natural stone that will be accomplished smoothly and efficiently with superior yield in shorter time. Advantages „ Safe: Can be used by personnel without explosive training. „ Simple : Requires only mixing with recomm ended quantity of water to activate. „ Quiet : No explosive sounds or vibration. „ Controlled : Eliminates hazard of flying rock. „ Versatile : Range of grades available to meet all application requirements. Description NOVABLAST is a special blend of cements and additives to provide a sustained expansion after setting. This expansion creates the fragmentation. Three grades are available for use in temperatures. 10 - 20 0 C Type A 20 - 35 0 C Type B 35 - 50 0 C Type H Technical Support An experienced technical advisory team is available to give technical service on request. Properties Expansion : Expansion forces more than 30 N/mm2 are typically achieved in a period of 18 - 24 hours. This acts against the tensile strength of the material to be fragmented. Application instructions Preparation A pattern of holes should be established, bearing in mind need to create a free face. Typically, the hole spacing will be about 10 times the hole diameter. The spacing chosen will depend upon the degree of fragmentation desired. The holes should preferably be greater than 25mm dia and 500mm length. Do not use in holes greater than 50mm diameter. For greater hole diameter consult NOVATECH INDIA Application The recommended water powder ratio is 0.25 to 0.30 for all grades. Us i n g Ta b l e 1 t h e q u a n t i t y o f p owd e r n e e d e d c a n b e calculated based on diameter, length and total number of holes. A measured quantity of water should be placed in a mixing drum. Water should not exceed 3 litres per 10kg of Fosroc Chemical Breaker. The powder should be added to the water, being continuously stirred with a hand mixer or drill and paddle until a lump free, even consistency is obtained. The mixed material will become a light gel within a maximum of 15 minutes from mixing. For ease of placing the grout should be poured into the holes before this time has elapsed. Care must be taken to ensure that the grout level is flush with the mouth of the hole. Cover the mouth of the hole by sacking or sheeting directly after filling, then retire immediately. After placing, Chemical Breaker should be left undisturbed until full cracking has taken place upto 24 hours after pouring. It is recommended that the work area is cardoned off with warning signs. Estimating Storage 12 months in unopened pack if stored in dry environment. Op e n e d p a c k s s h o u l d b e t i g h t l y r e s e a l e d , k e p t i n d r y

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