Sodium phosphate-derived calcium phosphate cements
Calcium phosphate cements (CPC) were synthesized by the acid-base reaction between sodium phosphate, NaH 2PO 4 or -(-NaPO 3-)- n, as the acid solution, and calcium aluminate cements (CAC) as the base reactant at 25 °C. The extent of reactivity of -(-NaPO 3-)- n with CAC was much higher than that of...
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| Veröffentlicht in: | Cement and concrete research 1995, Vol.25 (1), p.91-101 |
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| creator | Sugama, Toshifumi Carciello, N.R. |
| description | Calcium phosphate cements (CPC) were synthesized by the acid-base reaction between sodium phosphate, NaH
2PO
4 or -(-NaPO
3-)-
n, as the acid solution, and calcium aluminate cements (CAC) as the base reactant at 25 °C. The extent of reactivity of -(-NaPO
3-)-
n with CAC was much higher than that of NaH
2PO
4, thereby resulting in a compressive strength of > 20 MPa. Sodium calcium orthophosphate (SCOP) salts as amorphous reaction products were responsible for the development of this strength. When this CPC specimen was exposed in an autoclave,
in-situ
amorphous → crystal conversions, such as SCOP → hydroxyapatite (HOAp), and Al
2O
3· xH
2O → γ-A100H, occurred at ≈ 100 °C, while the rate of reaction of the residual CAC with the phosphate reactant was increasingly accelerated by hydrothermal catalysis. Based upon this information, we prepared lightweight CPC specimens by hydrothermally treating a low-density cement slurry (1.28 g/cc) consisting of CAC powder, -(-NaPO
3-)-
n solution, and mullite-hollow microspheres. The characteristics of the autoclaved lightweight specimens were a compressive strength of > 9.0 MPa, water permeability of ≈ 5.0 × 10
−3 milli darcy, and a low rate of alkali carbonation. The reasons for such a low carbonation rate reflected the presence of a minimum amount of residual CAC, in conjunction with the presence of HOAp and γ-A100H phases that are unsusceptible to wet carbonation. |
| doi_str_mv | 10.1016/0008-8846(94)00117-H |
| format | Article |
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2PO
4 or -(-NaPO
3-)-
n, as the acid solution, and calcium aluminate cements (CAC) as the base reactant at 25 °C. The extent of reactivity of -(-NaPO
3-)-
n with CAC was much higher than that of NaH
2PO
4, thereby resulting in a compressive strength of > 20 MPa. Sodium calcium orthophosphate (SCOP) salts as amorphous reaction products were responsible for the development of this strength. When this CPC specimen was exposed in an autoclave,
in-situ
amorphous → crystal conversions, such as SCOP → hydroxyapatite (HOAp), and Al
2O
3· xH
2O → γ-A100H, occurred at ≈ 100 °C, while the rate of reaction of the residual CAC with the phosphate reactant was increasingly accelerated by hydrothermal catalysis. Based upon this information, we prepared lightweight CPC specimens by hydrothermally treating a low-density cement slurry (1.28 g/cc) consisting of CAC powder, -(-NaPO
3-)-
n solution, and mullite-hollow microspheres. The characteristics of the autoclaved lightweight specimens were a compressive strength of > 9.0 MPa, water permeability of ≈ 5.0 × 10
−3 milli darcy, and a low rate of alkali carbonation. The reasons for such a low carbonation rate reflected the presence of a minimum amount of residual CAC, in conjunction with the presence of HOAp and γ-A100H phases that are unsusceptible to wet carbonation.</description><identifier>ISSN: 0008-8846</identifier><identifier>EISSN: 1873-3948</identifier><identifier>DOI: 10.1016/0008-8846(94)00117-H</identifier><identifier>CODEN: CCNRAI</identifier><language>eng</language><publisher>New York, NY: Elsevier Ltd</publisher><subject>360600 - Other Materials ; ALKALINE EARTH METAL COMPOUNDS ; Analysis of cement phases and constituents ; Applied sciences ; BUILDING MATERIALS ; Buildings. Public works ; CALCIUM COMPOUNDS ; CALCIUM PHOSPHATES ; Cement concrete constituents ; CEMENTS ; COMPRESSION STRENGTH ; CRYSTAL-PHASE TRANSFORMATIONS ; Exact sciences and technology ; MATERIALS ; MATERIALS SCIENCE ; MECHANICAL PROPERTIES ; OXYGEN COMPOUNDS ; PERMEABILITY ; PHASE STUDIES ; PHASE TRANSFORMATIONS ; PHOSPHATES ; PHOSPHORUS COMPOUNDS ; Properties of anhydrous and hydrated cement, test methods ; SYNTHESIS</subject><ispartof>Cement and concrete research, 1995, Vol.25 (1), p.91-101</ispartof><rights>1995</rights><rights>1995 INIST-CNRS</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c360t-7684349b77b8fe9810e9b25eea5c6242cb1dbe22752d6822ccb8d84ca289d1c3</citedby><cites>FETCH-LOGICAL-c360t-7684349b77b8fe9810e9b25eea5c6242cb1dbe22752d6822ccb8d84ca289d1c3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://dx.doi.org/10.1016/0008-8846(94)00117-H$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>230,314,780,784,885,3541,4014,27914,27915,27916,45986</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=3395449$$DView record in Pascal Francis$$Hfree_for_read</backlink><backlink>$$Uhttps://www.osti.gov/biblio/6494311$$D View this record in Osti.gov$$Hfree_for_read</backlink></links><search><creatorcontrib>Sugama, Toshifumi</creatorcontrib><creatorcontrib>Carciello, N.R.</creatorcontrib><title>Sodium phosphate-derived calcium phosphate cements</title><title>Cement and concrete research</title><description>Calcium phosphate cements (CPC) were synthesized by the acid-base reaction between sodium phosphate, NaH
2PO
4 or -(-NaPO
3-)-
n, as the acid solution, and calcium aluminate cements (CAC) as the base reactant at 25 °C. The extent of reactivity of -(-NaPO
3-)-
n with CAC was much higher than that of NaH
2PO
4, thereby resulting in a compressive strength of > 20 MPa. Sodium calcium orthophosphate (SCOP) salts as amorphous reaction products were responsible for the development of this strength. When this CPC specimen was exposed in an autoclave,
in-situ
amorphous → crystal conversions, such as SCOP → hydroxyapatite (HOAp), and Al
2O
3· xH
2O → γ-A100H, occurred at ≈ 100 °C, while the rate of reaction of the residual CAC with the phosphate reactant was increasingly accelerated by hydrothermal catalysis. Based upon this information, we prepared lightweight CPC specimens by hydrothermally treating a low-density cement slurry (1.28 g/cc) consisting of CAC powder, -(-NaPO
3-)-
n solution, and mullite-hollow microspheres. The characteristics of the autoclaved lightweight specimens were a compressive strength of > 9.0 MPa, water permeability of ≈ 5.0 × 10
−3 milli darcy, and a low rate of alkali carbonation. The reasons for such a low carbonation rate reflected the presence of a minimum amount of residual CAC, in conjunction with the presence of HOAp and γ-A100H phases that are unsusceptible to wet carbonation.</description><subject>360600 - Other Materials</subject><subject>ALKALINE EARTH METAL COMPOUNDS</subject><subject>Analysis of cement phases and constituents</subject><subject>Applied sciences</subject><subject>BUILDING MATERIALS</subject><subject>Buildings. Public works</subject><subject>CALCIUM COMPOUNDS</subject><subject>CALCIUM PHOSPHATES</subject><subject>Cement concrete constituents</subject><subject>CEMENTS</subject><subject>COMPRESSION STRENGTH</subject><subject>CRYSTAL-PHASE TRANSFORMATIONS</subject><subject>Exact sciences and technology</subject><subject>MATERIALS</subject><subject>MATERIALS SCIENCE</subject><subject>MECHANICAL PROPERTIES</subject><subject>OXYGEN COMPOUNDS</subject><subject>PERMEABILITY</subject><subject>PHASE STUDIES</subject><subject>PHASE TRANSFORMATIONS</subject><subject>PHOSPHATES</subject><subject>PHOSPHORUS COMPOUNDS</subject><subject>Properties of anhydrous and hydrated cement, test methods</subject><subject>SYNTHESIS</subject><issn>0008-8846</issn><issn>1873-3948</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1995</creationdate><recordtype>article</recordtype><recordid>eNp9kE9LxDAQxYMouK5-Aw-LeNBDNf-aJhdBFrXCggf3HtLJlI3stiWpC357WysLXjwNw_zezHtDyCWjd4wydU8p1ZnWUt0YeUspY0VWHpEZ04XIhJH6mMwOyCk5S-ljaBUXekb4e-vD527RbdrUbVyPmccY9ugX4LbwZ7IA3GHTp3NyUrttwovfOifr56f1ssxWby-vy8dVBkLRPiuUlkKaqigqXaPRjKKpeI7oclBccqiYr5DzIudeac4BKu21BMe18QzEnFxNa9vUB5sg9AgbaJsGobdKGikYGyA5QRDblCLWtoth5-KXZdSOv7FjcDsGt0ban9_YcpBdT7LOpSFnHV0DIR20QphcSjNgDxOGQ8x9wDjawAbQhzi68G34_8434UR3OQ</recordid><startdate>1995</startdate><enddate>1995</enddate><creator>Sugama, Toshifumi</creator><creator>Carciello, N.R.</creator><general>Elsevier Ltd</general><general>Elsevier Science</general><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>OTOTI</scope></search><sort><creationdate>1995</creationdate><title>Sodium phosphate-derived calcium phosphate cements</title><author>Sugama, Toshifumi ; Carciello, N.R.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c360t-7684349b77b8fe9810e9b25eea5c6242cb1dbe22752d6822ccb8d84ca289d1c3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1995</creationdate><topic>360600 - Other Materials</topic><topic>ALKALINE EARTH METAL COMPOUNDS</topic><topic>Analysis of cement phases and constituents</topic><topic>Applied sciences</topic><topic>BUILDING MATERIALS</topic><topic>Buildings. Public works</topic><topic>CALCIUM COMPOUNDS</topic><topic>CALCIUM PHOSPHATES</topic><topic>Cement concrete constituents</topic><topic>CEMENTS</topic><topic>COMPRESSION STRENGTH</topic><topic>CRYSTAL-PHASE TRANSFORMATIONS</topic><topic>Exact sciences and technology</topic><topic>MATERIALS</topic><topic>MATERIALS SCIENCE</topic><topic>MECHANICAL PROPERTIES</topic><topic>OXYGEN COMPOUNDS</topic><topic>PERMEABILITY</topic><topic>PHASE STUDIES</topic><topic>PHASE TRANSFORMATIONS</topic><topic>PHOSPHATES</topic><topic>PHOSPHORUS COMPOUNDS</topic><topic>Properties of anhydrous and hydrated cement, test methods</topic><topic>SYNTHESIS</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Sugama, Toshifumi</creatorcontrib><creatorcontrib>Carciello, N.R.</creatorcontrib><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>OSTI.GOV</collection><jtitle>Cement and concrete research</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Sugama, Toshifumi</au><au>Carciello, N.R.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Sodium phosphate-derived calcium phosphate cements</atitle><jtitle>Cement and concrete research</jtitle><date>1995</date><risdate>1995</risdate><volume>25</volume><issue>1</issue><spage>91</spage><epage>101</epage><pages>91-101</pages><issn>0008-8846</issn><eissn>1873-3948</eissn><coden>CCNRAI</coden><abstract>Calcium phosphate cements (CPC) were synthesized by the acid-base reaction between sodium phosphate, NaH
2PO
4 or -(-NaPO
3-)-
n, as the acid solution, and calcium aluminate cements (CAC) as the base reactant at 25 °C. The extent of reactivity of -(-NaPO
3-)-
n with CAC was much higher than that of NaH
2PO
4, thereby resulting in a compressive strength of > 20 MPa. Sodium calcium orthophosphate (SCOP) salts as amorphous reaction products were responsible for the development of this strength. When this CPC specimen was exposed in an autoclave,
in-situ
amorphous → crystal conversions, such as SCOP → hydroxyapatite (HOAp), and Al
2O
3· xH
2O → γ-A100H, occurred at ≈ 100 °C, while the rate of reaction of the residual CAC with the phosphate reactant was increasingly accelerated by hydrothermal catalysis. Based upon this information, we prepared lightweight CPC specimens by hydrothermally treating a low-density cement slurry (1.28 g/cc) consisting of CAC powder, -(-NaPO
3-)-
n solution, and mullite-hollow microspheres. The characteristics of the autoclaved lightweight specimens were a compressive strength of > 9.0 MPa, water permeability of ≈ 5.0 × 10
−3 milli darcy, and a low rate of alkali carbonation. The reasons for such a low carbonation rate reflected the presence of a minimum amount of residual CAC, in conjunction with the presence of HOAp and γ-A100H phases that are unsusceptible to wet carbonation.</abstract><cop>New York, NY</cop><pub>Elsevier Ltd</pub><doi>10.1016/0008-8846(94)00117-H</doi><tpages>11</tpages></addata></record> |
| fulltext | fulltext |
| identifier | ISSN: 0008-8846 |
| ispartof | Cement and concrete research, 1995, Vol.25 (1), p.91-101 |
| issn | 0008-8846 1873-3948 |
| language | eng |
| recordid | cdi_osti_scitechconnect_6494311 |
| source | ScienceDirect Journals (5 years ago - present) |
| subjects | 360600 - Other Materials ALKALINE EARTH METAL COMPOUNDS Analysis of cement phases and constituents Applied sciences BUILDING MATERIALS Buildings. Public works CALCIUM COMPOUNDS CALCIUM PHOSPHATES Cement concrete constituents CEMENTS COMPRESSION STRENGTH CRYSTAL-PHASE TRANSFORMATIONS Exact sciences and technology MATERIALS MATERIALS SCIENCE MECHANICAL PROPERTIES OXYGEN COMPOUNDS PERMEABILITY PHASE STUDIES PHASE TRANSFORMATIONS PHOSPHATES PHOSPHORUS COMPOUNDS Properties of anhydrous and hydrated cement, test methods SYNTHESIS |
| title | Sodium phosphate-derived calcium phosphate cements |
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