Mortar composition for spacers and mortar
Patent Information
- Authority / Receiving Office
- JP · JP
- Patent Type
- Patents
- Current Assignee / Owner
- DENKA CO LTD
- Filing Date
- 2022-03-10
- Publication Date
- 2026-06-15
Smart Images
Figure 0007873974000001
Abstract
Claims
1. It contains Portland cement, lightweight fine aggregate, pozzolanic powder, inorganic carbonate, and high-performance water-reducing agent. For every 100 parts by mass of Portland cement, the mixture contains 5 to 15 parts by mass of lightweight fine aggregate, 5 to 15 parts by mass of pozzolanic powder, and 1 to 5 parts by mass of inorganic carbonate. The high-performance water-reducing agent is present in an amount of 0.5 to 3.0% of the total spacer mortar composition. The compressive strength at 28 days of age after curing with water is 100 N / mm². ２ That's all. The aforementioned lightweight fine aggregate is perlite, The water absorption rate of the aforementioned perlite rock is 70-100%. A mortar composition for spacers, wherein the maximum particle size of the perlite is 1,000 μm or less.
2. It contains Portland cement, lightweight fine aggregate, pozzolanic powder, inorganic carbonate, and high-performance water-reducing agent. For every 100 parts by mass of Portland cement, the mixture contains 5 to 15 parts by mass of lightweight fine aggregate, 5 to 15 parts by mass of pozzolanic powder, and 1 to 5 parts by mass of inorganic carbonate. The high-performance water-reducing agent is present in an amount of 0.5 to 3.0% of the total spacer mortar composition. The compressive strength at 28 days of age after curing with water is 100 N / mm². ２ That's all. The aforementioned lightweight fine aggregate is perlite, A mortar composition for spacers, wherein the unit volume mass of the mortar before water is added and hardened is 1.9 kg / L or less.
3. It contains Portland cement, lightweight fine aggregate, pozzolanic powder, inorganic carbonate, and high-performance water-reducing agent. For every 100 parts by mass of Portland cement, the mixture contains 5 to 15 parts by mass of lightweight fine aggregate, 5 to 15 parts by mass of pozzolanic powder, and 1 to 5 parts by mass of inorganic carbonate. The high-performance water-reducing agent is present in an amount of 0.5 to 3.0% of the total spacer mortar composition. The compressive strength at 28 days of age after curing with water is 100 N / mm². ２ That's all. The aforementioned lightweight fine aggregate is perlite, A mortar composition for spacers in which, after being mixed with water and cured underwater, the unit volume mass of the mortar at 28 days of age is 2.1 kg / L or less.
4. The mortar composition for spacers according to any one of claims 1 to 3, wherein the pozzolann fine powder is acidic silica fume.
5. The mortar composition for spacers according to any one of claims 1 to 4, wherein the inorganic carbonate is calcium carbonate.
6. The mortar composition for spacers according to any one of claims 1 to 5, wherein the high-performance water-reducing agent is a polycarboxylic acid-based water-reducing agent.
7. A mortar composition for spacers according to any one of claims 1 to 6, comprising at least one of glass fibers and polypropylene fibers.
8. The compressive strength at 1 day after curing with water added is 65 N / mm². ２ The mortar composition for spacers according to any one of claims 1 to 7.
9. The compressive strength at 3 days after curing with water added is 80 N / mm². ２ The mortar composition for spacers according to any one of claims 1 to 8.
10. The compressive strength at 7 days after curing with added water is 90 N / mm². ２ The mortar composition for spacers according to any one of claims 1 to 9.
11. A spacer mortar composition according to any one of claims 1 to 10, and water, A mortar in which the total amount of water and high-performance water-reducing agent relative to the entire spacer mortar composition is 15 to 25%.