Energy-saving and waste-utilizing concrete block or board and production method thereof
A technology for waste blocks and plates, applied in the field of building materials, can solve the problems of low strength, long demoulding time, large capital investment, etc., and achieve the effects of excellent thermal insulation performance, good economic benefits, and good fire resistance.
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[0053] Example 1, an energy-saving and waste-conserving building block and board, according to desulfurization gypsum 100, S95 slag powder 80, ultrafine fly ash 100, cement 30, foaming agent 0.2, alkaline activator 2, and early strength agent 0.5, The weight ratio of water reducing agent 0.02, mineral fiber 0.35 and triethanolamine 0.02. The blowing agent is dissolved in water equivalent to 150 times its weight. The amount of water used to prepare the slurry is 45% of the total weight of desulfurized gypsum, slag powder, ultra-fine fly ash and cement. The steam curing system adopted is the static stop temperature of 15℃, the static stop time of 2h, the heating rate of 5℃ / h, the constant temperature of 50℃, the constant temperature of 5h, the cooling rate of 20℃ / h, and the cooling target temperature of 15℃. The properties of this energy-saving and waste-utilizing block and board are shown in Table 1 and Table 2, respectively.
Example Embodiment
[0054] Example 2, an energy-saving and waste-conserving block and board, according to desulfurization gypsum 100, S75 slag powder 90, ultra-fine fly ash 20, cement 55, foaming agent 0.5, alkaline activator 6, early strength agent 4, The weight ratio of water reducing agent 0.75, mineral fiber 3.50 and triethanolamine 0.010 is formulated. The blowing agent is dissolved in water equivalent to 150 times its weight. The amount of water used to prepare the slurry is 50% of the total weight of desulfurized gypsum, slag powder, ultrafine fly ash and cement. The adopted steam curing system is static stop temperature 20℃, static stop time 4h, heating rate 10℃ / h, constant temperature 60℃, constant temperature time 8h, cooling rate 25℃ / h, and cooling target temperature 20℃. The properties of this energy-saving and waste-utilizing block and board are shown in Table 1 and Table 2, respectively.
Example Embodiment
[0055] Example 3, an energy-saving waste building block and board, according to desulfurization gypsum 100, S75 slag powder 110, ultra-fine fly ash 80, cement 50, foaming agent 0.7, alkaline activator 8, early strength agent 5, The weight ratio of water reducing agent 0.90, mineral fiber, 1.50 and triethanolamine 0.08 is formulated. The blowing agent is dissolved in water equivalent to 150 times its weight. The water consumption for preparing the slurry is 55% of the total weight of desulfurized gypsum, slag powder, ultra-fine fly ash and cement. The adopted steam curing system is static stop temperature 25℃, static stop time 6h, heating rate 10℃ / h, constant temperature 65℃, constant temperature time 10h, cooling rate 35℃ / h, and cooling target temperature 20℃. The properties of this energy-saving and waste-utilizing block and board are shown in Table 1 and Table 2, respectively.
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