WO1990011257A1 - Cement hardening accelerator and its production - Google Patents
Cement hardening accelerator and its production Download PDFInfo
- Publication number
- WO1990011257A1 WO1990011257A1 PCT/JP1990/000413 JP9000413W WO9011257A1 WO 1990011257 A1 WO1990011257 A1 WO 1990011257A1 JP 9000413 W JP9000413 W JP 9000413W WO 9011257 A1 WO9011257 A1 WO 9011257A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- weight
- parts
- powder
- cement
- sintered body
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B22/00—Use of inorganic materials as active ingredients for mortars, concrete or artificial stone, e.g. accelerators or shrinkage compensating agents
- C04B22/06—Oxides, Hydroxides
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
- C04B40/0028—Aspects relating to the mixing step of the mortar preparation
- C04B40/0039—Premixtures of ingredients
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B22/00—Use of inorganic materials as active ingredients for mortars, concrete or artificial stone, e.g. accelerators or shrinkage compensating agents
- C04B22/0093—Aluminates
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
- C04B2103/10—Accelerators; Activators
- C04B2103/14—Hardening accelerators
Definitions
- the present invention relates to a cement curing accelerator and a method for producing the same. Furthermore, if only a small amount of this cement hardening accelerator is added to the cement, and this is kneaded with water, the cement hardens quickly, and in that case, the amount of addition is increased. Also, the present invention relates to a cement curing accelerator capable of adjusting the curing time of cement within a predetermined range.
- the former Japanese Patent Publication No. 56-274745 is composed of calcium aluminate, sodium aluminate and sodium carbonate.
- the cement with the cement hardening accelerator used in this technology starts to set in 30 seconds to 3 minutes when water is added and kneaded, and then within about 10 minutes. Hardening is almost complete. In this sense, it is true and satisfactory that this cement hardening accelerator is superior in accelerating the hardening of cement. However, for the cement hardening accelerator of this technology, this is added to the cement and kneaded with water. If so, it was difficult to delay the time it took to begin to set, if necessary.
- cement paste to which this curing accelerator has been added starts to set immediately-for example, when it is moved to another place for a short time, curing starts before use. There was a problem.
- the former cement hardening accelerator can be expected to have the above-mentioned expected effects by a method in which it is mixed with cement in advance and water is added thereto and kneaded, that is, a dry method.
- a dry method In the method of preparing a cement paste that does not contain a cement curing accelerator in advance, and then adding a cement curing accelerator to the cement paste, the so-called wet method cures about half or less of the dry method. There was a problem that only a promoting effect could be expected.
- Japanese Patent Publication No. 55-113635 has almost the same problems as the former technology, and according to this technology, when the brand of the cement used changes, the coagulation starts. And the hardening performance fluctuated greatly.
- S 0 3 is 0. 4 to 8.
- a raw material containing a 5% 1 1 5 0 ° C or higher The sintered body is fired to obtain a sintered body.
- 5 to 70 parts by weight of an alkali metal carbonate powder and 170% by weight of lime powder are used. added the following parts by weight, Seme down bets manufacturing method of hardening accelerator ⁇ Motomeko 1, wherein the mixing (claim 2), 3 C a O * 2 N a 2 0 * 5 a l 2 0 3 There 4. 2 5 ⁇ 8 5%, N a 2 S 0 4 is 0. 7.
- the cement hardening accelerator is obtained by adding and mixing 5 to 70 parts by weight of an alkali metal carbonate powder and 170 parts by weight or less of lime powder (Claim 6).
- the above-mentioned sintered body used in the present invention is 3 C a0
- N a 2 S 0 4 N a 2 0 ⁇
- the content ratio of the mineral sintered body, as described below, 3 C a O * 2 N a 2 0 * 5 A l 2 0 3 is 4. 2 5 ⁇ 8 5%, N a 2 S 0 4 is 0. 7 5 ⁇ : L 5%, N a 2 0 ⁇ A 1 2 03 are Ru 95% der less.
- 3 C a O * 2 N a 2 0 * 5 A l 2 0 3 is 4. 2 5 ⁇ 8 5%
- N a 2 S 0 4 is 0. 7 5 ⁇ : L 5%
- N a 2 0 ⁇ A 1 2 03 are Ru 95% der less.
- the content ratio of Na 2 0 ⁇ A 1 203 and 3C aO, 2N a 2 0 * 5 Al 2 0 3 in the sintered body depends on the speed of cement setting and the hardening strength. Directly related to N a 2 0 ⁇ A 1 2 0 3 but is condensation rate offensive emissions bets if included rather multi the early curing strength of cementite down bets is low. Conversely, 3 when C a O * 2 N a 2 0 ⁇ 5 A 1 2 03 are contained many, but condensation rate is slow, the curing strength is rather large.
- C a O is its raw material
- firing the A 12 0 3 and N a 2 0 simply raw material mixture was blended in a ratio that stoichiometrically calculated Only by this, C a 0 in this is hard to react, and it has an arbitrary ratio of Na 2 0 ⁇ A 12 03 and 3 C a O * 2 N a 2 0 ⁇ 5 A 1 2 3 mineral composition
- a sintered body is not easily obtained.
- S 03 in the raw material in order to promote the reaction of Ca 0.
- the mixing ratio of S 0 3 as shown in the following reaction formula, to C a 03 mol. 1 mol better to add.
- N a 2 0 ⁇ A 1 2 0 3 is zero
- N a 2 0 ⁇ A 1 a 03 is the lower limit, if the words zero port, 3 C a O * 2 N a 2 0 ⁇ 5 A 1 2 0 3 is 8 5%, N a 2 S 0 4 Is a sintered body with a mineral composition of 15%.
- a curing accelerator that can increase the curing strength can be obtained, although the setting start time is delayed.
- N a 2 0 ⁇ A 1 2 03 to 95% of the upper limit Ri by the reasons mentioned above, 3 C a O * 2 N a 2 0 «5 A l 2 0 3 is 4.2 5% s N a 2 S 0 4 is 0.7 5%.
- Na 20 ⁇ A 1203 exceeds 95%, the setting speed becomes faster, but the hardening strength is so small that it cannot be put to practical use. Therefore, the scope of these minerals was as described above.
- the sintered body obtained as described above is then pulverized.
- the fineness is preferably in the range of 1500 to 800 eZg in terms of Blaine specific surface area.
- 100 parts by weight of powder of this sintered body On the other hand, 5 to 70 parts by weight of an alkali metal carbonate powder, preferably 30 to 70 parts by weight, 170 parts by weight or less of lime powder, preferably 10 to 150 parts by weight are added and mixed, and the present invention is applied.
- a cement curing accelerator is then pulverized.
- the fineness is preferably in the range of 1500 to 800 eZg in terms of Blaine specific surface area.
- the addition amount of the alkali metal carbonate powder and the addition amount of the lime powder are based on the following grounds.
- composition condense cementite down bets the mechanism for curing, N a 2 in the sintered body 0 ⁇ A 1 2 0 3, 3 C a 0 ⁇ 2 N a 2 0 ⁇ 5 A 1 2 0 a , and and C a (OH) 2, a 1 2 0 3 and S 0 3 to elute N a 2 S 0 4 or al solution, 3 C a in Scheme down DOO 0 ⁇ S i 0 2> 3 C a 0 ⁇ A 12 03.
- CaO or Ca (OH) 2 is added here to make up for the shortage of Ca0.
- the added amount of C a O or C a (OH) 2 may be reduced accordingly if the content of C a 0 in the sintered body used in the present invention is large, but conversely, If the content of C a 0 is small, it is necessary to increase it. From the above, according to the present invention, as a result of the experiment, the amount of lime powder added was 170 parts by weight or less, that is, 0 to 170 parts by weight, based on 100 parts by weight of the sintered body powder. is there.
- the addition amount of the alkali metal carbonate is preferably 5 to 70 parts by weight based on 100 parts by weight of the sintered powder used in the present invention.
- a particularly important component in the cement hardening accelerator composition according to the present invention is a component of a sintered body.
- the invention of claim 2 is a method for producing the cement curing accelerator of claim 1.
- the above-mentioned sintered body which is a main raw material for producing a cement hardening accelerator, is produced. Must be built.
- the method for producing this sintered body is obtained by firing a raw material in which Na20, CaO, A120a, and S03 are mixed at a predetermined ratio.
- the Na 20 raw material used here includes sodium carbonate and sodium bicarbonate
- the Ca 0 raw material includes limestone and raw lime.
- a 1 (OH) 3 as the S 0 3 material, such as C a S 0 4, A 12 (S 0 4) 3 is is there.
- the 6% C a O 3. 6 ⁇ 1 7. 8%, S 0 Use a raw material containing 1.7 to 8.5% of 3 .
- the mixing ratio of the raw materials is determined so that the above-mentioned mineral is fired.
- the mixture of the above raw materials is then fired at a temperature of at least 150 ° C., preferably at a temperature of at least 1200.
- the sintered body is pulverized in the same manner as described in the first aspect of the present invention, and 100 to 100 parts by weight of the powder, 5 to 70 parts by weight of the alkali metal carbonate powder and 170 parts by weight of the lime powder.
- the following addition and mixing are performed to finally produce a cement curing accelerator.
- Raw materials include sodium carbonate, alumina, calcium carbonate, and sulfuric acid.
- the commercially available primary reagents of calcium acid were used in the proportions (% by weight) shown in the raw material composition column in Table 1.
- the amount of sodium carbonate and calcium carbonate in the raw materials was 950. Since C 0 2 was dissipated in C, extra measurement was performed in advance. In the experiment, after mixing each raw material, 100 gr was packed in a platinum dish, and the temperature was raised at 20 min / min.
- the sintered body produced by sintering was well ground with a porcelain milk stick to obtain a powder.
- Was identified minerals produced here by X-ray diffraction it was confirmed that UNA various minerals by indicated by the symbol CA 5 ⁇ CA 5 0 in the first table is generated.
- the sintered body produced here can adjust the setting time of the cement while maintaining the specified strength.As already described, the higher the content of NA, the faster the setting time .
- C3N2A5 sets more slowly than NA, because it is a mineral with higher hardening strength.
- N ⁇ is the formation reaction of previously been mentioned base 3 C a O * 2 N a 2 0 ⁇ 5 A 1 2 0 3 and N a 2 0 ⁇ A 12 03 , facilitates the reaction of C a 0 is S 0 3 of the reaction accelerator is added in order to a product coming out by the reaction with N a 2 0, it is not particularly affected relates setting and hardening.
- the invention of claim 3 is very similar to the invention of claim 1, except that a mixture of individual substances constituting the sintered body is used instead of the sintered body used in the invention of claim 1. It differs from the invention of claim 1 in that it is used.
- the preferred ranges of the individual substances are the same as those described in claim 1.
- This invention uses a sintered body as a main raw material similarly to the invention of claim 1, but the sintered body used in the present invention has a different mineral composition from the sintered body used in claim 1,
- a 1 2 03 * S 0 3 is from 1 to 90%.
- the sintered body is then pulverized, and the fineness in this case is preferably in the range of 150 to 800 crfZgr.
- the powder of this sintered body 5 to 70 parts by weight, preferably 30 to 70 parts by weight, of alkali metal carbonate powder and 170 to 70 parts by weight of lime powder are preferable.
- the amounts of the alkali metal salt powder and the lime powder to be added and the reasons for the limitation are the same as those described for the invention of claim 1.
- the invention of claim 5 is a method for producing the cement curing accelerator of claim 4.
- a sintered body as a main raw material must be manufactured.
- Raw material N a 2 0, A l 2 0 3, C a O, S 0 3 used in here is the same as the place was mentioned base in the second aspect of the present invention.
- N a 2 0 material sodium carbonate
- sodium bicarbonate in an A 1 2 0 3 material, out of alumina, A l 2 (OH) a , and the raw material of the S 03 it is then, and the like C a S 0 4, A 1 2 (S 04) 3.
- limestone, quicklime, and the like are used as CaO raw materials.
- N a 2 0 a 0.2 to 1 9.5% the A 1 2 0 3 5 0. 2 ⁇ 54. 0%, C a O 1 8 . 0-3 6.5%, using a raw material containing S 0 3 to 8.5 to 1 3.1%.
- N a 2 0 a 2. 0 ⁇ 1 9. 5%, A 1 2 0 3 and 5 0. 6 ⁇ 54. 0%, C a O 1 8.0 to 3 4.
- the mixture of the raw materials is fired at a temperature of at least 150 ° C., preferably at a temperature of at least 1200, in the same manner as the invention of claim 2.
- the firing conditions are the same as in claim 2.
- This sintered body was similarly ground and 100 parts by weight of the powder was added to an alkali metal carbonate powder. 5 to 70 parts by weight and lime powder in an amount of 170 parts by weight or less, and finally, a cement hardening accelerator is produced.
- the invention of claim 6 is very similar to the invention of claim 4, except that a mixture of individual substances constituting the sintered body is used instead of the sintered body used in the invention of claim 4. It differs from the invention of claim 4 in that it is used.
- 3 C a O * 2 N a 2 0 ⁇ 5 A 1 2 0 3 is 0. 8 5 ⁇ 84. 1 5%
- N a 2 S 0 4 is 0.1 5 to 14.85%
- 4 C a relative 0 ⁇ 3 a 1 2 0 3 ' mixture of flour powder to SO s is composed of a 1-9 9% 1 0 0 parts by weight, for 5-7 0 parts by weight of carbonate al force Li metal salt powder, lime powder Is added and mixed in an amount of 170 parts by weight or less, and the other components are the same as those of the invention of claim 4.
- the reason for specifying the compounding ratio of each component in the raw material is also the same as in the invention of claim 4.
- the preferred range of each substance is the same as that described in claim 4.
- the invention of claim 6 is slightly inferior in terms of coagulation and curing to the invention of claim 4, but it can be recognized that it is superior to the conventionally known cement curing accelerator.
- Table 2 as a comparative example, comprising a mixture of NA and sodium carbonate De lime Seme emissions collected by curing accelerator and (CA.), shown together with commercial quick-setting admixture (CA 01) Was. Was also shown in parentheses (CA 20), (CA 40 ), (CA 60), each of the (CA so) S is those same set the CA 20, CA 40, CA 60 , CA 80 without parentheses, rather than as a mineral, added to a mixture of individual powder, it indicated as when mixed.
- FIGS. 1 to 4 attached hereto show those shown in Table 2 for each added amount of cement hardening accelerator. As can be seen from FIGS. 1 to 4, it can be seen that the present invention has excellent quick-setting properties. Further, the cement hardening accelerator of the present invention can control the setting time by adjusting the mineral composition as a component in the cement hardening accelerator and the amount of the cement hardening accelerator added.
- CA 20 each CA 5, CA 2.
- CA 40 CA 6o> Quick setting, setting time is slightly inferior to CA 99 , but CA. It can be seen that it is superior to CA 01 . .
- Example 1 Example 1
- the sintered body thus obtained had a ⁇ 8 of 80%, C 3 N 2 A 5 force "1 7%, Monodea ivy that but containing 3%. That is, in terms of the chemical composition, N a 2 0 is 34. 1% A 1 2 0 3 is 6 0. 6% C a O force "3 6% 3 0 3 months" 1.7% der I did. This is crushed and the specific surface area
- Example 2 Using the same powders of alumina, sodium carbonate, limestone and anhydrite as in Example 1, 32.2% of sodium carbonate, 44.9% of alumina, 13.5% of limestone, anhydrous Gypsum was used as a raw material at 9.4%. The raw materials were thoroughly stirred and mixed, and fired in the same manner as in Example 1. The resulting sintered body Te cowpea thereto, NA is 2 0%, C 3 N 2 A 5 is 6 8%, N is containing 1 2% It had. Further, in terms of the chemical composition, N a 2 0 force "2 3. 3%, A 1 2 0 3 force 5 5. 7%, C a O is 14. 2% S 0 3 is 6.8% met Was.
- Example 2 This was pulverized in the same manner as in Example 1 to obtain a Blaine specific surface area of 3500 cm 2 Zgr. To 100 parts by weight of the sintered compact, 60 parts by weight of sodium carbonate and 90 parts by weight of slaked lime were added and mixed to obtain a cement hardening accelerator. This cement hardening accelerator was applied to a tunnel excavation site as follows.
- the concrete was then discharged from the spray nozzle and sprayed on the top of the arch and the wall in the tunnel.
- the average spray thickness on the tunnel wall was about 20 cm
- the average amount of cement hardening accelerator used was 3.5% based on the amount of cement in the concrete.
- the sprayed thickness at the top of the tunnel was 20 to 50 cm
- the average amount of cement accelerator was 6.5% based on the amount of cement in the concrete.
- 40 to 100 j? Per minute per 5irf in the tunnel Regarding the top end the concrete peeled off even when the cement hardening accelerator was added at 7% of the amount of cement in the concrete.
- the mass accelerator was increased to 9%, flaking stopped.
- the concrete was sprayed in the same manner as above using a commercially available quick-setting agent containing calcium aluminate, sodium aluminate, sodium carbonate, and lime. .
- the average amount of quick-setting agent used on the wall was 5.0% of the amount of cement in the concrete, and the amount of quick-setting agent used on the top was less than the amount of cement. 9.0% was required.
- the addition amount of the quick setting agent was increased to a maximum of 15%, the sprayed concrete could not be prevented from falling off.
- the resulting sintered body is One by thereto, C 4 A 3 "" is 6 0%, C 3 N 2 A 5 is 3 4%, N "was one Monodea which" contains 6%. That is, in terms of the chemical composition, N a 2 0 is 7. 9% s A 1 2 0 3 force "5 1. 7%, C a 0 power 2 9. 1%, S 0 3 months" It was 11.3%. This was ground into a powder frame to have a brain specific surface area of 3200 cm 2 Zgr. To 100 parts by weight of the powder of this sintered body, 15 parts by weight of sodium carbonate was added and mixed to obtain a cement hardening accelerator. Concrete was repaired using the cement to which the cement hardening accelerator was added.
- Agent B 49% of alumina and 51% of sodium carbonate are mixed well as raw materials and fired in a firing furnace at a temperature of 125 ⁇ 50, resulting in more than 98% NA generated.
- Agent A 24 parts by weight of agent A, 13.6 parts by weight of agent B, 2.4 parts by weight of commercially available sodium sulfate, 20 parts by weight of sodium carbonate, and 45 parts by weight of slaked lime are uniformly mixed and cement hardened.
- An accelerator 24 parts by weight of agent A, 13.6 parts by weight of agent B, 2.4 parts by weight of commercially available sodium sulfate, 20 parts by weight of sodium carbonate, and 45 parts by weight of slaked lime are uniformly mixed and cement hardened.
- the average amount of the cement hardening accelerator used on the tunnel wall surface was as follows. 4.0% of the cement used at the top of the tunnel and 8.0% at the top of the tunnel. In the spring area, when the hardening accelerator was increased to 12%, the spalling stopped.
- the setting time of the cement can be completed in a short time, and the start time of the setting can be adjusted from almost instantaneously to about 3 degrees.
- the setting start time can be greatly adjusted, it can of course be used as a general-purpose cement curing accelerator for presetting the curing reaction.
- the hardening accelerator according to the present invention may be added to the cement paste by a wet method, or by a dry method of kneading the cement in advance. It can be expected to have almost the same curing performance as that of the cement paste, so it is well suited to the mainstream method of today, in which cement paste is kneaded in advance and this cement curing accelerator is added at the tip of transfer. It can be used as a cement hardening accelerator.
- FIGS. 1 to 4 show the penetration of the cement paste to which the cement hardening accelerator according to the present invention and the cement hardening accelerator of the comparative example were added in respective proportions.
- FIG. 3 is a diagram showing a relationship with time.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Description
Claims
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019900702522A KR920700170A (ko) | 1989-03-28 | 1990-03-28 | 시멘트 경화 촉진제 및 그 제조방법 |
| NO90904614A NO904614L (no) | 1989-03-28 | 1990-10-24 | Sementbindingsakselerator og fremgangsmaate for fremstilling av den samme. |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7604989 | 1989-03-28 | ||
| JP1/76049 | 1989-03-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO1990011257A1 true WO1990011257A1 (en) | 1990-10-04 |
Family
ID=13593929
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP1990/000413 Ceased WO1990011257A1 (en) | 1989-03-28 | 1990-03-28 | Cement hardening accelerator and its production |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US5160376A (ja) |
| EP (1) | EP0416134A4 (ja) |
| KR (1) | KR920700170A (ja) |
| CA (1) | CA2027569C (ja) |
| WO (1) | WO1990011257A1 (ja) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2019048729A (ja) * | 2017-09-08 | 2019-03-28 | デンカ株式会社 | 結合材組成物およびその刺激剤 |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5512325A (en) * | 1994-10-28 | 1996-04-30 | Indresco Inc. | Non-slumping, pumpable castable and method of applying the same |
| US6313055B1 (en) | 1998-08-20 | 2001-11-06 | Harbison-Walker Refractories Company | Refractory castables containing thermal black |
| US6313056B1 (en) | 1998-08-20 | 2001-11-06 | Harbison-Walker Refractories Company | Non-slumping sprayable refractory castables containing thermal black |
| US6264740B1 (en) | 1998-12-08 | 2001-07-24 | Mcnulty, Jr. William J. | Inorganic cementitious material |
| US6113684A (en) * | 1999-04-16 | 2000-09-05 | Kunbargi; Hassan | Rapid hardening, ultra-high early strength Portland-type cement compositions, novel clinkers and methods for their manufacture which reduce harmful gaseous emissions |
| US6758896B2 (en) | 1999-04-16 | 2004-07-06 | Hassan Kunbargi | Rapid hardening, ultra-high early strength portland-type cement compositions, novel clinkers and methods for their manufacture which reduce harmful gaseous emissions |
| US6406534B1 (en) | 1999-04-16 | 2002-06-18 | Hassan Kunbargi | Rapid hardening, ultra-high early strength portland-type cement compositions, novel clinkers and methods for their manufacture which reduce harmful gaseous emissions |
| AU2007318532B2 (en) * | 2006-11-09 | 2012-11-01 | Denki Kagaku Kogyo Kabushiki Kaisha | Set accelerator and technique for spraying with the same |
| RU2740696C2 (ru) | 2016-03-22 | 2021-01-19 | Сикэ Текнолоджи Аг | Композиция на основе оксида кальция |
| CN111205010A (zh) * | 2020-03-27 | 2020-05-29 | 河南天平工程质量检测有限公司 | 一种用于路面混凝土的早强剂 |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH021104B2 (ja) * | 1984-07-12 | 1990-01-10 | Onoda Cement Co Ltd | |
| JPH0238350A (ja) * | 1989-06-16 | 1990-02-07 | Denki Kagaku Kogyo Kk | セメントモルタル又はコンクリートの吹付用急結剤 |
| JPH0251456A (ja) * | 1989-06-16 | 1990-02-21 | Denki Kagaku Kogyo Kk | セメントモルタル又はコンクリートの吹付用急結剤 |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4650523A (en) * | 1984-06-08 | 1987-03-17 | Onoda Cement Co., Ltd. | Cement accelerating agent |
| CN85108582B (zh) * | 1984-10-30 | 1988-08-17 | 蓝圈工业有限公司 | 固化粘结组合物 |
| JPS63206341A (ja) * | 1987-02-23 | 1988-08-25 | 太平洋セメント株式会社 | セメント急結剤 |
-
1990
- 1990-03-28 WO PCT/JP1990/000413 patent/WO1990011257A1/ja not_active Ceased
- 1990-03-28 US US07/598,639 patent/US5160376A/en not_active Expired - Fee Related
- 1990-03-28 CA CA002027569A patent/CA2027569C/en not_active Expired - Fee Related
- 1990-03-28 EP EP19900905650 patent/EP0416134A4/en not_active Ceased
- 1990-03-28 KR KR1019900702522A patent/KR920700170A/ko not_active Ceased
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH021104B2 (ja) * | 1984-07-12 | 1990-01-10 | Onoda Cement Co Ltd | |
| JPH0238350A (ja) * | 1989-06-16 | 1990-02-07 | Denki Kagaku Kogyo Kk | セメントモルタル又はコンクリートの吹付用急結剤 |
| JPH0251456A (ja) * | 1989-06-16 | 1990-02-21 | Denki Kagaku Kogyo Kk | セメントモルタル又はコンクリートの吹付用急結剤 |
Non-Patent Citations (1)
| Title |
|---|
| See also references of EP0416134A4 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2019048729A (ja) * | 2017-09-08 | 2019-03-28 | デンカ株式会社 | 結合材組成物およびその刺激剤 |
Also Published As
| Publication number | Publication date |
|---|---|
| KR920700170A (ko) | 1992-02-19 |
| EP0416134A4 (en) | 1991-08-28 |
| CA2027569A1 (en) | 1990-09-29 |
| CA2027569C (en) | 1995-09-19 |
| EP0416134A1 (en) | 1991-03-13 |
| US5160376A (en) | 1992-11-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO1990011257A1 (en) | Cement hardening accelerator and its production | |
| JPH11303398A (ja) | コンクリートの打設方法 | |
| JP3205672B2 (ja) | 高水和活性物質、セメント用急結材及びコンクリートまたはモルタルの凝結、硬化を促進する方法 | |
| CN102285773A (zh) | 一种磷石膏水泥缓凝剂及制备方法 | |
| JP2001294469A (ja) | 超速硬性無収縮グラウト材 | |
| JPH0579621B2 (ja) | ||
| KR100464184B1 (ko) | 숏크리트용 시멘트 광물계 급결제 및 그 제조방법 | |
| JP2001253753A (ja) | 急硬性セメントコンクリート及び場所打ちライニング工法 | |
| JPS63277542A (ja) | 速硬性組成物 | |
| JPH0597491A (ja) | セメント混和材及びその急結施工方法 | |
| KR100859776B1 (ko) | 점성증가 숏크리트용 급결제 조성물 | |
| JP7282459B2 (ja) | 充填材 | |
| JP2871089B2 (ja) | セメント硬化促進剤及びその製造方法 | |
| JP2006182568A (ja) | 急硬材及び急硬性セメント組成物 | |
| JP4086969B2 (ja) | 超速硬性無収縮グラウトモルタル | |
| JP3483903B2 (ja) | 注入材 | |
| JP3529052B2 (ja) | 凝結遅延剤及びそれを用いた速硬性コンクリートの施工方法 | |
| JPS6150900B2 (ja) | ||
| RU2177459C1 (ru) | Комплексная добавка для цемента, бетона, раствора, сухой смеси и тампонажного материала | |
| JP2769182B2 (ja) | セメント成形体の製法 | |
| JP2004210552A (ja) | 吹付けコンクリート用急結剤 | |
| JP2747294B2 (ja) | セメントモルタル・コンクリート用混和材 | |
| JPH02302352A (ja) | 速硬型セルフレベリング性床材用組成物 | |
| JPWO1990011257A1 (ja) | セメント硬化促進剤及びその製造方法 | |
| RU2341481C1 (ru) | Способ приготовления гипсобетонной смеси |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| AK | Designated states |
Kind code of ref document: A1 Designated state(s): CA JP KR NO US |
|
| AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): CH DE FR GB SE |
|
| WWE | Wipo information: entry into national phase |
Ref document number: 1990905650 Country of ref document: EP |
|
| WWE | Wipo information: entry into national phase |
Ref document number: 2027569 Country of ref document: CA |
|
| WWP | Wipo information: published in national office |
Ref document number: 1990905650 Country of ref document: EP |
|
| WWR | Wipo information: refused in national office |
Ref document number: 1990905650 Country of ref document: EP |
|
| WWW | Wipo information: withdrawn in national office |
Ref document number: 1990905650 Country of ref document: EP |
|
| ENP | Entry into the national phase |
Ref country code: CA Ref document number: 2027569 Kind code of ref document: A Format of ref document f/p: F |