Hydraulic composition

Abstract

The present invention is a hydraulic composition, which includes an -hydroxy sulfonic acid or a salt thereof, a hydraulic powder and water, wherein the ratio of slag in the hydraulic powder is 60% by mass or more.

Claims

1. A hydraulic composition comprising an -hydroxy sulfonic acid or a salt thereof, hydraulic powder and water, a ratio of slag in the hydraulic powder being 60% by mass or more.

2. The hydraulic composition according to claim 1, wherein the -hydroxyl sulfonic acid or the salt thereof is contained in an amount of 0.0005 parts by mass or more and 1.000 part by mass or less relative to 100 parts by mass of the hydraulic powder.

3. The hydraulic composition according to claim 1, wherein a ratio of cement in the hydraulic powder is 35% by mass or less.

4. The hydraulic composition according to claim 1, further comprising alkanolamine.

5. The hydraulic composition according to claim 4, wherein alkanolamine is contained in an amount of 0.0005 parts by mass or more and 1.000 part by mass or less relative to 100 parts by mass of the hydraulic powder.

6. The hydraulic composition according to claim 1, further comprising an aromatic compound having a hydroxyl group.

7. The hydraulic composition according to claim 6, wherein the aromatic compound having the hydroxyl group is contained in an amount of 0.0005 parts by mass or more and 1.000 part by mass or less relative to 100 parts by mass of the hydraulic powder.

8. The hydraulic composition according to claim 1, wherein the -hydroxy sulfonic acid or the salt thereof is one or more kinds of compounds selected from hydroxymethanesulfonate, 1,2-dihyroxypropane-2-sulfonic acid, and salts thereof.

9. A method of producing a hydraulic composition comprising adding an -hydroxy sulfonic acid or a salt thereof to hydraulic powder and kneading with water, wherein a ratio of slag in the hydraulic powder is 60% by mass or more.

Description

EXAMPLES

(1) The following Examples describe the implementation of the present invention. The Examples are for illustration of the present invention, and are not intended to limit the present invention.

(2) Hydraulic compositions were prepared in accordance with Appendix 2 of Physical Testing Methods for Cement (JIS R 5201) (testing methods for cementmeasurement of strength). Compressive strengths of obtained hydraulic compositions were evaluated in accordance with Appendix 2 of Physical Testing Methods for Cement (JIS R 5201) (testing methods for cementmeasurement of strength).

(3) Formulations of the hydraulic compositions are shown in Table 1. In the formulations of Table 1, 0.03 g of Foamlex 797 (manufactured by Nicca Chemical Co., Ltd.) was added as an antifoaming agent to each.

(4) Further, as a portion of hydraulic powder, a slag composition having Formulation 1, 2 or 3 in Table 2 was used.

(5) Compressive strengths after 3 days from the preparation of the hydraulic compositions were measured. In some testing examples, compressive strengths after 28 days from the preparation were also measured. Results are shown in Tables 3 to 6. In Tables 3 to 6, relative values of compressive strengths are a relative value when taking results of comparative examples having a branch number 1 of each test number as 100.

(6) In Tables 3 to 6, an -hydroxy sulfonic acid or a salt thereof, alkanolamine, an aromatic compound having a hydroxyl group and NaOH are indicated as component (A), component (B), component (C), and component (D), respectively.

(7) Further, abbreviations in Tables 3 to 6 have the following meanings. DHPS: sodium 1,2-dihyroxypropane-2-sulfonic acid HMS: sodium hydroxymethanesulfonate TEA: triethanolamine TiPA: triisopropanolamine

(8) TABLE-US-00001 TABLE 1 W/P W P S 0.50 225 g 450 g 1350 g

(9) Symbols in Table 1 have the following meanings. W: water P: hydraulic powder (slag composition in Table 2 or hydraulic powder in Tables 3 to 6) S: fine aggregate (standard sand for cement strength test: manufactured by The Japan Cement Association)

(10) TABLE-US-00002 TABLE 2 Slag Gypsum Calcium *1 dihydrate hydroxide Hydrau- Formu- Mass (g) 380.25 67.5 2.25 lic lation 1 Ratio (% by mass) 84.5 15 0.5 powder Formu- Mass (g) 402.75 45 2.25 lation 2 Ratio (% by mass) 89.5 10 0.5 Formu- Mass (g) 292.5 150 7.5 lation 3 Ratio (% by mass) 65.0 33.3 1.7 *1 Slag: Spirits S-40A (manufactured by Nippon Steel & Sumikin Cement Co., Ltd.)

(11) TABLE-US-00003 TABLE 3 Hydraulic composition Compressive strength Hydraulic powder (A) Component (B) Component 3 days later Ratio of Ratio of Content Content Measured slag cement (part by (part by value Relative Type (% by mass) (% by mass) Type mass*) Type mass*) (N/mm.sup.2) value Test No. 1-1 Comparative Ordinary cement*.sup.1 0 100 26.95 100 1-2 Examples HMS 0.1 28.50 106 1-3 HMS 0.1 TEA 0.1 28.30 105 2-1 Comparative Blast furnace cement 40-45 60-55 22.45 100 2-2 Examples Type B*.sup.2 HMS 0.1 22.05 98 2-3 HMS 0.1 TEA 0.1 19.50 87 3-1 Comparative Ordinary cement/ 62.65 30 14.5 100 Example Formulation 2 = 30/70 3-2 Examples (mass ratio) HMS 0.1 16.1 111 3-3 HMS 0.1 TEA 0.1 15.2 105 4-1 Comparative Formulation 3 65.0 0 1.65 100 Example 4-2 Examples HMS 0.1 2.84 172 4-3 HMS 0.1 TEA 0.1 2.56 155 5-1 Comparative Ordinary cement/ 71.6 20 11.2 100 Example Formulation 2 = 20/80 5-2 Examples (mass ratio) HMS 0.1 14.2 127 5-3 HMS 0.1 TEA 0.1 12.05 108 6-1 Comparative Formulation 1 84.5 0 4.89 100 Example 6-2 Examples HMS 0.1 8.95 183 6-3 HMS 0.1 TEA 0.1 9.61 197 7-1 Comparative Formulation 2 89.5 0 6.37 100 Examples 7-2 Example HMS 0.1 12.3 193 7-3 HMS 0.1 TEA 0.1 15.2 239 *Part by mass: part by mass relative to 100 parts by mass of hydraulic powder (the same applies hereinafter) *.sup.1ordinary cement (manufactured by Taiheiyo Cement Corporation) *.sup.2blast furnace cement Type B (manufactured by Sumitomo Osaka Cement Co., Ltd.)

(12) From Table 3, Examples using hydraulic powder containing 60% by mass or more of slag show that inclusion of an -hydroxy sulfonic acid or a salt thereof increases the 3-day compressive strength more than the absence thereof, and combined use of alkanolamine increases the compressive strength further more. Meanwhile, in Comparative Examples using blast furnace cement Type B containing 40 to 45% by mass of slag, even when an -hydroxy sulfonic acid or a salt thereof is contained, the compressive strength is not increased; in the case of the ordinary cement not containing slag, even when an -hydroxy sulfonic acid or a salt thereof is contained, an increase of compressive strength is about 6%.

(13) TABLE-US-00004 TABLE 4 Hydraulic powder (A) Component (B) Component (C) Component Ratio of Ratio of Content Content Content slag cement (part by (part by (part by Type (% by mass) (% by mass) Type mass) Type mass) Type mass) Test No. .sup.8-1*.sup.1 Comparative Formulation 2 89.5 0 8-2 Examples TEA 0.1 8-3 TiPA 0.1 8-4 .sup.8-5*.sup.1 Examples HMS 0.1 .sup.8-6*.sup.1 HMS 0.1 TEA 0.1 8-7 HMS 0.1 TiPA 0.1 8-8 DHPS 0.1 8-9 DHPS 0.1 TEA 0.1 8-10 HMS 0.1 TiPA 0.1 4- 0.1 cyanocatechol 8-11 HMS 0.1 TiPA 0.1 4- 0.1 cyanocatechol 8-12 DHPS 0.1 TiPA 0.1 4- 0.1 cyanocatechol 8-13 DHPS 0.1 TiPA 0.1 4- 0.1 cyanocatechol 8-14 HMS 0.1 TEA 0.1 4- 0.1 cyanocatechol 8-15 DHPS 0.1 TEA 0.1 4- 0.1 cyanocatechol Compressive strength (D) Component 3 days later 28 days later Content Measured Measured (part by value Relative value Relative Type mass) (N/mm.sup.2) value (N/mm.sup.2) value Test No. .sup.8-1*.sup.1 Comparative 6.37 100 10.2 100 8-2 Example 7.75 122 12.7 125 8-3 6.65 104 10 98 8-4 NaOH 0.01 6.21 98 9.82 96 .sup.8-5*.sup.1 Examples 12.3 193 23.7 232 .sup.8-6*.sup.1 15.2 239 36.1 354 8-7 13 204 26.9 264 8-8 13 204 24.6 241 8-9 15 236 36.1 354 8-10 22 345 46.7 458 8-11 NaOH 0.01 22.5 353 45.9 450 8-12 20.3 319 42.7 419 8-13 NaOH 0.01 18.15 285 43 422 8-14 20.3 319 45.7 448 8-15 20.1 316 46.6 457 *.sup.1Test Nos. 8-1, 8-5 and 8-6 correspond to Test Nos. 7-1, 7-2 and 7-3, respectively, in Table 3.

(14) From Table 4, when sodium hydroxymethanesulfonate or sodium 1,2-dihyroxypropane-2-sulfonate is used as an -hydroxy sulfonic acid or a salt thereof, the 3-day compressive strength is increased. Further, when triethanolamine or triisopropanolamine is used in combination as an alkanolamine, the compressive strength is further increased. Moreover, in addition to the -hydroxy sulfonic acid or the salt thereof and the alkanolamine, combined use of an aromatic compound having a hydroxyl group and an alkali metal hydroxide increases the compressive strength further more.

(15) TABLE-US-00005 TABLE 5 Hydraulic composition Hydraulic powder *1(% by mass) (A) Component (B) Component (C) Component Anhy- Gypsum Calcium Content Content Content drous dihy- hy- (part by (part by (part by Slag gypsum drate droxide Type mass) Type mass) Type mass) Test No. 9-1 Comparative 89.5 0.0 100 0.5 Example 9-2 Example HMS 0.1 TiPA 0.1 4- 0.1 cyanocatechol 10-1 Comparative 89.5 10.0 0.0 0.5 Example 10-2 Example HMS 0.1 TiPA 0.1 4- 0.1 cyanocatechol 11-1 Comparative 87.0 0.0 12.5 0.5 Example 11-2 Example 84.5 0.0 15.0 0.5 HMS 0.1 TiPA 0.1 4- 0.1 cyanocatechol 12-1 Comparative Example 12-2 Example HMS 0.1 TiPA 0.1 4- 0.1 cyanocatechol Hydraulic composition Compressive strength (D) Component 3 days later 28 days later Content Measured Measured (part by value Relative value Relative Type mass) (N/mm.sup.2) value (N/mm.sup.2) value Test No. 9-1 Comparative 6.37 100 10.2 100 Example 9-2 Example NaOH 0.01 22.5 353 45.9 450 10-1 Comparative 11.0 100 19.3 100 Example 10-2 Example NaOH 0.01 19.6 175 45.6 233 11-1 Comparative 5.81 100 8.80 100 Example 11-2 Example NaOH 0.01 21.0 361 46.5 528 12-1 Comparative 4.89 100 7.70 100 Example 12-2 Example NaOH 0.01 20.9 427 48.7 633 *1 The hydraulic powder for Test Nos. 9-1 and 9-2 has Formulation 2 in Table 2, and the hydraulic powder for Test Nos. 12-1 and 12-2 has Formulation 1 in Table 2.

(16) From Table 5, in addition to the -hydroxy sulfonic acid or the salt thereof and the alkanolamine, combined use of an aromatic compound having a hydroxyl group and an alkali metal hydroxide further increases the compressive strength.

(17) TABLE-US-00006 TABLE 6 Hydraulic composition Compressive strength Hydraulic powder (A) Component (B) Component 3 days later Ratio of Ratio of Content Content Measured Rela- slag cement (part by (part by value tive Type (% by mass) (% by mass) Type mass) Type mass) (N/mm.sup.2) value Test No. 7-1 Comparative Formulation 89.5 0 6.37 100 Example 2 13-1 Examples HMS 0.01 7.5 118 13-2 HMS 0.02 11.8 185 13-3 HMS 0.05 12.7 199 7-2 HMS 0.1 12.3 193 13-4 HMS 0.2 11.1 174 13-5 HMS 0.5 10.4 163 13-6 HMS 1 9.45 148 13-7 HMS 0.1 TEA 0.05 14.5 228 7-3 HMS 0.1 TEA 0.1 15.2 239 13-8 HMS 0.1 TEA 0.15 15.0 235 13-9 HMS 0.05 TEA 0.05 14.1 221 13-10 HMS 0.05 TEA 0.1 14.8 232 13-11 HMS 0.05 TEA 0.15 14.4 226

(18) From Table 6, even when the contents of the -hydroxy sulfonic acid or the salt thereof and the alkanolamine are varied, the effect of increased compressive strength is observed.