Blast-furnace slag powder and blast-furnace slag and coal cinder compound powder excitant
A technology of blast furnace slag powder and blast furnace slag is applied in the field of activator, blast furnace slag powder or activator of blast furnace slag and coal slag composite powder, which can solve the problems affecting the durability of concrete, corrosion of steel bars, etc., and achieves obvious excitation effect and reduced cost. , a wide range of effects
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Embodiment 1
[0020] The preparation of cement mortar is carried out according to the national standard GB / T 17671-1999.
[0021] Comparative sample: 225 grams of P.II42.5 cement, 225 grams of blast furnace slag, 1350 grams of ISO standard sand, 225 grams of water, no activator added, the compressive strength of mortar sand after testing for 7 days and 28 days were 29.6MPa and 54.6 MPa, calculated according to the national standard GB / T 18046-2000, the 7-day and 28-day activity indices of slag powder are 78% and 103% respectively.
[0022] Test sample: 225 grams of P.II42.5 cement, 225 grams of blast furnace slag, 1350 grams of ISO standard sand, 225 grams of water, 6.8625 grams of activator composed of 0.1125 grams of triethanolamine and 6.75 grams of calcined gypsum, tested for 7 days and 28 days The compressive strength of natural rubber sand is 35.8MPa and 60.1MPa respectively, calculated according to the national standard GB / T 18046-2000, the 7-day and 28-day activity indices of slag p...
Embodiment 2
[0025] The preparation of cement mortar is carried out according to the national standard GB / T 17671-1999.
[0026] Comparative sample: 225 grams of P.II 42.5 cement, 225 grams of blast furnace slag, 1350 grams of ISO standard sand, 225 grams of water, no activator added, and the compressive strength of the mortar after testing for 7 days and 28 days was 29.4MPa and 57.0MPa respectively , calculated according to the national standard GB / T 18046-2000, the 7-day and 28-day activity indices of slag powder are 77% and 107% respectively.
[0027] Test sample: 225 grams of P.II 42.5 cement, 225 grams of blast furnace slag, 1350 grams of ISO standard sand, 225 grams of water, 6.8625 grams of activator composed of 0.1125 grams of triethanolamine and 6.75 grams of dihydrate gypsum, tested for 7 days and 28 days The compressive strength of natural rubber sand is 32.3MPa and 57.8MPa respectively. According to the national standard GB / T 18046-2000, the 7-day and 28-day activity indices of...
Embodiment 3
[0030] The preparation of cement mortar is carried out according to the national standard GB / T 17671-1999.
[0031] Comparative sample: 225 grams of P.II 42.5 cement, 191.2 grams of blast furnace slag, 33.8 grams of coal cinder, 1350 grams of ISO standard sand, 225 grams of water, no activator, and the compressive strength of mortar sand after testing for 7 days and 28 days were 28.5 MPa and 55.3MPa.
[0032] Test sample: 225 grams of P.II 42.5 cement, 191.2 grams of blast furnace slag, 33.8 grams of cinder, 1350 grams of ISO standard sand, 225 grams of water, 6.8625 grams of activator composed of 0.1125 grams of triethanolamine and 6.75 grams of calcined gypsum, tested 7 The compressive strengths of mortar sand at 1 day and 28 days were 31.2MPa and 58.3MPa, respectively.
[0033] Compared with the control sample, after adding this activator composed of triethanolamine and calcined gypsum, the potential activity of coal slag can be effectively stimulated; after coal slag is u...
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