High-performance shrinkage-free cement-based grouting material prepared by manufactured sand and preparation method of cement-based grouting material
A machine-made sand and cement-based technology, which is applied in the field of cement-based materials, can solve the problems of surface laitance and easy sinking of large-volume fine aggregates, and achieve high uniformity, good fluidity, and mitigation of abuse. Effect
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Embodiment 1
[0033] Example 1: A high-performance non-shrinkage cement-based grout prepared with machine-made sand
[0034] This high-performance non-shrinkage cement-based grouting material is composed of machine-made sand, ordinary Portland cement, fly ash, slag powder, fiber, heavy material (polycarboxylate superplasticizer dry powder, defoamer, plastic retainer, anti-early shrinkage agent and water-retaining agent), light materials (rapid hardening sulfoaluminate cement, expansion agent and gypsum are mixed), and the ratio of various materials is:
[0035] Machine-made sand 0-0.6mm 24%
[0036] Machine-made sand 0.6-2.36mm 25%
[0037] Machine-made sand 2.36-4.75mm 5%
[0038] P.O42.5 cement 35%
[0039] Fly Ash 6%
[0040] Slag powder 1.854%
[0041] Polypropylene fiber 0.02%
[0042] Polycarboxylate superplasticizer 0.09%
[0043] Sodium Glucose Plasticizer 0.0075%
[0044] Defoamer 0.006%
[0045] Anti-premature shrinkage agent 0.0175%
Embodiment 2
[0052] Example 2: A high-performance non-shrinkage cement-based grout prepared with machine-made sand
[0053] The similarities with Example 1 are no longer described, and the differences are as follows:
[0054] Machine-made sand 0-0.6mm 20%
[0055] Machine-made sand 0.6-2.36mm 25%
[0056] Machine-made sand 2.36-4.75mm 5%
[0057] P.O42.5 cement 36%
[0058] Fly Ash 6%
[0060] Polypropylene fiber 0.02%
[0061] Polycarboxylate superplasticizer 0.09%
[0062] Sodium Glucose Plasticizer 0.0075%
[0063] Defoamer 0.006%
[0064] Anti-premature shrinkage agent 0.0175%
[0065] Cellulose ether water retaining agent 0.005%
[0066]R.SAC42.5 cement 1.5%
[0067] AC expansion agent 1%
[0068] Gypsum 1.004%
[0069] The cement-based grouting material obtained in this example can be used directly after adding water and stirring evenly, wherein the weight ratio of water to material is 0.135.
Embodiment 3
[0070] Example 3: A high-performance non-shrinkage cement-based grout prepared with machine-made sand
[0071] The similarities with Example 1 are no longer described, and the differences are as follows:
[0072] Machine-made sand 0-0.6mm 26%
[0073] Machine-made sand 0.6-2.36mm 26%
[0074] Machine-made sand 2.36-4.75mm 8%
[0075] P.O42.5 cement 32%
[0076] Fly Ash 3%
[0078] Polypropylene fiber 0.03%
[0079] Polycarboxylate superplasticizer 0.08%
[0080] Sodium Glucose Plasticizer 0.0075%
[0081] Defoamer 0.006%
[0082] Anti-premature shrinkage agent 0.0175%
[0083] Cellulose ether water retaining agent 0.003%
[0084] R.SAC42.5 cement 1.5%
[0085] AC expansion agent 1%
[0086] Gypsum 1.006%
[0087] The cement-based grouting material obtained in this example can be used directly after adding water and stirring evenly, wherein the weight ratio of water to material is 0.125.
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