Zobrazeno 1 - 10
of 46
pro vyhledávání: '"D W HOBBS"'
Autor:
D. W. Hobbs
Publikováno v:
Magazine of Concrete Research. 46:167-175
Expansion results up to an age of 42 months are reported that were obtained in tests carried out at 20°C to determine the effective alkali release from pulverized fuel ash (PFA) in concretes of normal cement content containing cristobalite as the re
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::313716c4020f9a6dd160d62dd0a6e4f0
https://doi.org/10.1680/macr.1994.46.168.167
https://doi.org/10.1680/macr.1994.46.168.167
Autor:
D. W. Hobbs
Publikováno v:
Magazine of Concrete Research. 46:35-38
Synopsis A limited investigation of the influence of 35% replacement of one OPC by two pfa's upon rate and depth of carbonation, strength development and water retention of concrete cubes is described. It is shown that both water retention and streng
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::01ddc397cdd2129d575607fe34a7328a
https://doi.org/10.1680/macr.1994.46.166.35
https://doi.org/10.1680/macr.1994.46.166.35
Autor:
D. W. Hobbs
Publikováno v:
Magazine of Concrete Research. 45:103-112
Expansion test results are reported for concretes made with a range of original alkali contents and prepared a number of UK aggregates containing chert and flint. The concretes were subject to three exposure regimes: moist storage at 38°C, moist sto
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6a10545051c3147e29e698771b6c475e
https://doi.org/10.1680/macr.1993.45.163.103
https://doi.org/10.1680/macr.1993.45.163.103
Autor:
D. W. Hobbs
Publikováno v:
"SP-177: Ettringite, the Sometimes Host of Destruction".
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4d3beed46058f97dc5e9fce979e40a55
https://doi.org/10.14359/6234
https://doi.org/10.14359/6234
Autor:
D. W. Hobbs
Publikováno v:
"SP-154: Advances in Concrete Technology - Proceeding Second CANMET/ ACI International Symposium - Las Vegas, Nevada, USA".
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9694831810c900659d8c6695ba3e50be
https://doi.org/10.14359/966
https://doi.org/10.14359/966
Autor:
D. W. Hobbs
Publikováno v:
Magazine of Concrete Research. 29:70-80
Synopsis Results are given of an investigation into the influence of specimen geometry and curing period upon the weight change and shrinkage of plain concrete specimens dried at 65% R.H. and 20°C. The concretes had water/cement ratios of 0·35, 0·
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d4c7efc25e103ec64b3983218dd443e6
https://doi.org/10.1680/macr.1977.29.99.70
https://doi.org/10.1680/macr.1977.29.99.70
Autor:
D. W. Hobbs
Publikováno v:
Magazine of Concrete Research. 38:191-205
Synopsis The literature dealing with the effectiveness of partial replacement of a high-alkali cement by pulverized-fuel ash (pfa) and ground granulated blast furnace slag (slag) in preventing deleterious expansion due to the alkali–silica reaction
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3c51a79faad30128c5d95715dce8a442
https://doi.org/10.1680/macr.1986.38.137.191
https://doi.org/10.1680/macr.1986.38.137.191
Autor:
D. W. Hobbs
Publikováno v:
Magazine of Concrete Research. 34:83-94
Synopsis The effectiveness of seven pulverized-fuel ashes(pfa) and a ground granulated blastfurnace slag (gbfs) in reducing the expansion and cracking induced in mortar bars by the alkali–silica reaction is described. The proportion of reactive agg
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6411e3f0c49d7f66406b5701efbfaa0a
https://doi.org/10.1680/macr.1982.34.119.83
https://doi.org/10.1680/macr.1982.34.119.83
Autor:
D. W. Hobbs
Publikováno v:
Magazine of Concrete Research. 35:55-58
Synopsis Experimental results are presented which show that replacing 5% by weight of Portland cement by four pulverized-fuel ashes, a ground granulated blastfurnace slag or a limestone flour has little effect upon the expansion of mortar bars tested
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::05948231967649f4c81b6284848af0ec
https://doi.org/10.1680/macr.1983.35.122.55
https://doi.org/10.1680/macr.1983.35.122.55
Particle size of aggregate and its influence upon the expansion caused by the alkali–silica reaction
Autor:
D. W. Hobbs, W. A. Gutteridge
Publikováno v:
Magazine of Concrete Research. 31:235-242
Synopsis Measurements of the expansion behaviour of mortar bars containing various proportions of a reactive porous op aline rock are described. It is shown that the age at which cracking occurred is essentially independent of particle size, and that
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::200a52aae531634204ef64778fcf7d02
https://doi.org/10.1680/macr.1979.31.109.235
https://doi.org/10.1680/macr.1979.31.109.235