On the generation of heat during the mixing of cement pastes
A substantial amount of heat is generated during high-speed shear mixing of low water/cement ratio pastes (w/c = 0.24). It was found that the major source of this heat is mechanical friction. Under constant temperature conditions, no evidence was found to suggest that the degree of hydration is grea...
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| Veröffentlicht in: | Cement and concrete research 1990, Vol.20 (3), p.471-474 |
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| container_end_page | 474 |
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| container_issue | 3 |
| container_start_page | 471 |
| container_title | Cement and concrete research |
| container_volume | 20 |
| creator | Brown, Marshall L. Jennings, Hamlin M. Ledbetter, William B. |
| description | A substantial amount of heat is generated during high-speed shear mixing of low water/cement ratio pastes (w/c = 0.24). It was found that the major source of this heat is mechanical friction. Under constant temperature conditions, no evidence was found to suggest that the degree of hydration is greater after high-speed shear mixing than after typical low-speed paddle mixing for the same period of time. Whether or not the temperature is controlled, shear mixing reduces the apparent viscosity of pastes having a low water/cement ratio, as compared with pastes from paddle mixing. |
| doi_str_mv | 10.1016/0008-8846(90)90038-Y |
| format | Article |
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It was found that the major source of this heat is mechanical friction. Under constant temperature conditions, no evidence was found to suggest that the degree of hydration is greater after high-speed shear mixing than after typical low-speed paddle mixing for the same period of time. Whether or not the temperature is controlled, shear mixing reduces the apparent viscosity of pastes having a low water/cement ratio, as compared with pastes from paddle mixing.</description><identifier>ISSN: 0008-8846</identifier><identifier>EISSN: 1873-3948</identifier><identifier>DOI: 10.1016/0008-8846(90)90038-Y</identifier><identifier>CODEN: CCNRAI</identifier><language>eng</language><publisher>New York, NY: Elsevier Ltd</publisher><subject>Applied sciences ; Buildings. 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It was found that the major source of this heat is mechanical friction. Under constant temperature conditions, no evidence was found to suggest that the degree of hydration is greater after high-speed shear mixing than after typical low-speed paddle mixing for the same period of time. Whether or not the temperature is controlled, shear mixing reduces the apparent viscosity of pastes having a low water/cement ratio, as compared with pastes from paddle mixing.</description><subject>Applied sciences</subject><subject>Buildings. Public works</subject><subject>Cement concrete constituents</subject><subject>Cements</subject><subject>Exact sciences and technology</subject><subject>Hydration</subject><subject>Materials</subject><subject>Properties of anhydrous and hydrated cement, test methods</subject><issn>0008-8846</issn><issn>1873-3948</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1990</creationdate><recordtype>article</recordtype><recordid>eNp9kE1LAzEQhoMoWKv_wMMeRPSwOmnSbAIiSPELCr3ooaeQzc62kW22Jqnov3e3LR49zQzvM18vIecUbihQcQsAMpeSiysF1wqAyXx-QAZUFixnistDMvhDjslJjB9dKUZMDsjdzGdpidkCPQaTXOuzts6WaFJWbYLzi626ct992ikWV-hTtjYxYTwlR7VpIp7t45C8Pz2-TV7y6ez5dfIwzS0TPOVYGiuRKoml7a4pKikLQ8dYjzitwAjDOVBOQZYGUHEmoS6tVbJiHA1UlA3J5W7uOrSfG4xJr1y02DTGY7uJejQWheBj1oF8B9rQxhiw1uvgVib8aAq6t0r3PujeB61Ab63S867tYj_fRGuaOhhvXfzrFbIQqig67H6HYffrl8Ogo3XoLVYuoE26at3_e34BbrR8cw</recordid><startdate>1990</startdate><enddate>1990</enddate><creator>Brown, Marshall L.</creator><creator>Jennings, Hamlin M.</creator><creator>Ledbetter, William B.</creator><general>Elsevier Ltd</general><general>Elsevier Science</general><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7QQ</scope><scope>8FD</scope><scope>JG9</scope></search><sort><creationdate>1990</creationdate><title>On the generation of heat during the mixing of cement pastes</title><author>Brown, Marshall L. ; Jennings, Hamlin M. ; Ledbetter, William B.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c364t-ebac8e198ebc9487d887a15ef241d0a6a44014108ba0e94380fbcc98d34ea0d13</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1990</creationdate><topic>Applied sciences</topic><topic>Buildings. Public works</topic><topic>Cement concrete constituents</topic><topic>Cements</topic><topic>Exact sciences and technology</topic><topic>Hydration</topic><topic>Materials</topic><topic>Properties of anhydrous and hydrated cement, test methods</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Brown, Marshall L.</creatorcontrib><creatorcontrib>Jennings, Hamlin M.</creatorcontrib><creatorcontrib>Ledbetter, William B.</creatorcontrib><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>Ceramic Abstracts</collection><collection>Technology Research Database</collection><collection>Materials Research Database</collection><jtitle>Cement and concrete research</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Brown, Marshall L.</au><au>Jennings, Hamlin M.</au><au>Ledbetter, William B.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>On the generation of heat during the mixing of cement pastes</atitle><jtitle>Cement and concrete research</jtitle><date>1990</date><risdate>1990</risdate><volume>20</volume><issue>3</issue><spage>471</spage><epage>474</epage><pages>471-474</pages><issn>0008-8846</issn><eissn>1873-3948</eissn><coden>CCNRAI</coden><abstract>A substantial amount of heat is generated during high-speed shear mixing of low water/cement ratio pastes (w/c = 0.24). It was found that the major source of this heat is mechanical friction. Under constant temperature conditions, no evidence was found to suggest that the degree of hydration is greater after high-speed shear mixing than after typical low-speed paddle mixing for the same period of time. Whether or not the temperature is controlled, shear mixing reduces the apparent viscosity of pastes having a low water/cement ratio, as compared with pastes from paddle mixing.</abstract><cop>New York, NY</cop><pub>Elsevier Ltd</pub><doi>10.1016/0008-8846(90)90038-Y</doi><tpages>4</tpages></addata></record> |
| fulltext | fulltext |
| identifier | ISSN: 0008-8846 |
| ispartof | Cement and concrete research, 1990, Vol.20 (3), p.471-474 |
| issn | 0008-8846 1873-3948 |
| language | eng |
| recordid | cdi_proquest_miscellaneous_25676453 |
| source | ScienceDirect Journals (5 years ago - present) |
| subjects | Applied sciences Buildings. Public works Cement concrete constituents Cements Exact sciences and technology Hydration Materials Properties of anhydrous and hydrated cement, test methods |
| title | On the generation of heat during the mixing of cement pastes |
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