Cement-based high-early-strength non-shrinkage grouting material
A cement-based, non-shrinking technology, applied in the field of cement-based materials, can solve the problems of unmentioned strength, limited use range, and decreased construction performance of grouting materials, and achieve excellent long-term strength and strength growth rate, with remarkable super early strength characteristics. , the effect of shortening the setting time
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Embodiment 1
[0029] Preparation of high belite sulphoaluminate cement clinker powder:
[0030] According to the raw meal weight ratio and batching rate value shown in Table 1, grinding to obtain 1.0 tons of raw meal with a fineness of 0.08mm and a sieve residue of less than 8%, after calcining at 1320°C in a rotary kiln, 0.72 tons (raw meal burned loss of 28%) high belite sulphoaluminate cement clinker, after grinding to obtain a specific surface area of 400 ~ 500m 2 / kg of clinker powder.
[0031] Table 1 Raw meal ratio and ingredient rate value
[0032]
[0033] The mineral composition of the clinker is shown in Table 2.
[0034] Table 2 Mineral Composition of High Belite Sulphoaluminate Cement Clinker
[0035]
[0036] The obtained high-belite sulfoaluminate cement clinker with high early strength performance was prepared according to the standard GB17671-1999 "Cement Mortar Strength Test Method (ISO Method)" and GB / T1346-2011 "Cement Standard Consistency Water Consumption, ...
Embodiment 2
[0043] Preparation of high belite sulfoaluminate special cementitious material:
[0044] According to the weight ratio shown in Table 4, add each component into the dry powder mixer in turn, and mix thoroughly and evenly to obtain the high-belite special sulfoaluminate cementitious material specially used for high-early-strength non-shrinkage grouting materials.
[0045] Table 4 The weight ratio of high belite sulfoaluminate special cementitious material
[0046]
[0047] Use the standard GB17671-1999 "Cement Mortar Strength Test Method (ISO Method)", GB / T1346-2011 "Cement Standard Consistency Water Consumption, Setting Time, Stability Test Method" and TC / T313-2009 "Expansion Cement Expansion Rate Test Method"The physical properties of the above three groups of high belite sulfoaluminate special cementitious materials were measured, and the results are shown in Table 5.
[0048] Table 5 Physical properties of high belite sulfoaluminate special cementitious materials
[00...
Embodiment 3
[0053] Preparation of High Early Strength Non-shrinkage Grouting Material
[0054] In this embodiment, polycarboxylate dry powder is selected as the alkaline water agent, mineral oil dry powder is selected as the defoamer, and low-viscosity cellulose ether is selected as the cellulose ether.
[0055] Group number 1:
[0056] Weigh each raw material component according to the following weight: 1000g of high belite sulfoaluminate special gelling material; 100g of heavy calcium powder; 860g of quartz sand; 10g of latex powder; 14g of water reducer; 10g of defoamer; cellulose ether 2g; citric acid 3g; lithium carbonate 1g, a total of 2000g. Pour the weighed material into a mixer and mix thoroughly until the bulk density of multiple samples taken at random does not change after measurement, and the cement-based high-early-strength non-shrinkage grouting material is obtained by mixing evenly.
[0057] Group number 2:
[0058] Weigh each raw material component according to the fol...
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