Clinker-free high-performance low-cost novel composite cementing material
A composite cementitious material, high-performance technology, applied in the direction of cement production, to achieve the effect of overcoming high energy consumption, good mechanical performance index, and good mechanical performance
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[0029] Example 1
[0030] (1) A new type of composite cementitious material with high performance and low cost without clinker. The raw material composition is: 30% iron tailings, 45% slag powder, 13% quicklime, 10% desulfurization ash, 2% sodium carbonate;
[0031] (2) Weigh various raw materials according to the mass percentage in step (1), mix them evenly, add tap water at a water-cement ratio of 0.5, stir in a mortar mixer for 90 seconds, and obtain the said non-clinker after completion New composite cementitious material with high performance and low cost;
[0032] (3) According to the national standard GB / T17671-1999 cement mortar strength test method (IOS method), the strength test of the new composite cementitious material without clinker, high performance and low cost, prepared in step (2), test results The 3d, 7d, and 28d compressive strengths are 3.4MPa, 9.23MPa, and 13.69MPa respectively; the 3d, 7d, 28d flexural strengths are 1.02MPa, 1.23MPa, and 1.85MPa.
Example Embodiment
[0033] Example 2
[0034] (1) A new type of composite cementitious material with high performance and low cost without clinker. The raw material composition is: 40% iron tailings, 35% slag powder, 14% quicklime, 10% desulfurization ash, 1% sodium carbonate;
[0035] (2) Weigh various raw materials according to the mass percentage in step (1), mix them evenly, add tap water at a water-cement ratio of 0.5, stir in a mortar mixer for 90 seconds, and obtain the said non-clinker after completion New composite cementitious material with high performance and low cost;
[0036] (3) According to the national standard GB / T17671-1999 cement mortar strength test method (IOS method), the strength test of the new composite cementitious material without clinker, high performance and low cost, prepared in step (2), test results The 3d, 7d, 28d compressive strengths are 4.76MPa, 8.51MPa, 12.48MPa, respectively; the 3d, 7d, 28d flexural strengths are 1.50MPa, 1.15MPa, 1.73MPa.
Example Embodiment
[0037] Example 3
[0038] (1) A new type of composite cementitious material with high performance and low cost without clinker. The raw material composition is: 20% iron tailings, 55% slag powder, 14% quicklime, 10% desulfurization ash, 1% sodium silicate;
[0039] (2) Weigh various raw materials according to the mass percentage in step (1), mix them evenly, add tap water at a water-cement ratio of 0.5, stir in a mortar mixer for 90 seconds, and obtain the said non-clinker after completion New composite cementitious material with high performance and low cost;
[0040] (3) According to the national standard GB / T17671-1999 cement mortar strength test method (IOS method), the strength test of the new composite cementitious material without clinker, high performance and low cost, prepared in step (2), test results The 3d, 7d, 28d compressive strengths are 9.04MPa, 13.33MPa, 22.86MPa, respectively; the 3d, 7d, 28d flexural strengths are 2.38MPa, 3.37MPa, 4.61MPa.
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