Zobrazeno 1 - 10
of 24
pro vyhledávání: '"Pjm Monteiro"'
Publikováno v:
Cement and Concrete Research. 35:2014-2017
Reported below are the results from a study aimed at mitigating the deleterious alkali–silica reaction by using perlite powder as an admixture. The expansion of mortar bars containing various amounts of silica fume (SF), expanded perlite, and natur
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::17582c4e5ea1686505d6a139fcacfca6
https://doi.org/10.1016/j.cemconres.2004.10.029
https://doi.org/10.1016/j.cemconres.2004.10.029
Publikováno v:
Cement and Concrete Research. 33:1825-1830
Expansion of mortar specimens prepared with an aggregate of mylonite from the Santa Rosa mylonite zone in southern California was studied to investigate the effect of different alkali ions on the alkali–silica reaction in concrete. The expansion te
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4c98bdec16deb8305c0492053a60b6af
https://doi.org/10.1016/s0008-8846(03)00204-7
https://doi.org/10.1016/s0008-8846(03)00204-7
Publikováno v:
Cement and Concrete Research. 33:1539-1542
The objective of this experimental study was to use ground clay brick (GCB) as a pozzolanic material to minimize the alkali-silica reaction expansion. Two different types of clay bricks were finely ground and their activity indices were determined. A
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bbfc878911cb591852ef27c38a22553e
https://doi.org/10.1016/s0008-8846(03)00101-7
https://doi.org/10.1016/s0008-8846(03)00101-7
Publikováno v:
Cement and Concrete Research. 30:817-822
The reaction of silica particles in solutions saturated or supersaturated with respect to portlandite is observed by transmission soft X-ray microscopy, and a model for calcium silicate hydrate (C-S-H) growth is proposed which corresponds with the mo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::531c4c7a69ff10baee7341a436d62697
https://doi.org/10.1016/s0008-8846(00)00235-0
https://doi.org/10.1016/s0008-8846(00)00235-0
Publikováno v:
Cement and Concrete Research. 31:825-827
The alkali–silica reaction (ASR) produces an expansive gel that may cause cracking and displacement in concrete structures. Steel microfibers ranging from 1% to 7% by volume of cement mortar were incorporated to reduce the expansion and cracking. A
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2e5321b2b2fa4ed8be70684cd875b3fe
https://doi.org/10.1016/s0008-8846(01)00479-3
https://doi.org/10.1016/s0008-8846(01)00479-3
Publikováno v:
Cement and Concrete Research. 33:933-934
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c15861b82889fe1e608d335783f5b9e8
https://doi.org/10.1016/s0008-8846(02)01070-0
https://doi.org/10.1016/s0008-8846(02)01070-0
Publikováno v:
ACI Materials Journal. 90
This paper presents the feasibility of using gamma ray computerized tomography (CT) to inspect reinforced concrete specimens. An objective was to verify the CT resolution in determining the size and location of voids and reinforcing bars. It is descr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d3e2602dfdcdc092bb8f1a631b01028c
https://doi.org/10.14359/3884
https://doi.org/10.14359/3884
Publikováno v:
Cement, Concrete and Aggregates. 16:57
Due to high cement contents and reduced heat capacity, high-strength lightweight concrete is often exposed to elevated curing temperatures. In the production of lightweight concrete the aggregate is often wetted before use, but sometimes dry aggregat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6a611dc9d0aa692bb5256ed577117fdb
https://doi.org/10.1520/cca10563j
https://doi.org/10.1520/cca10563j
Publikováno v:
Cement, Concrete and Aggregates. 11:126
The morphology of air-entrained voids has been observed using the low-temperature scanning electron microscope (LTSEM). The entrained voids have been examined in cement paste specimens at an age of 5 min.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f8e7259f572125a38d9dd5a5a98d2bea
https://doi.org/10.1520/cca10114j
https://doi.org/10.1520/cca10114j
Publikováno v:
Cement, Concrete and Aggregates. 10:68
A comprehensive test program on the behavior of high-strength mortar under different conditions has been performed by studying the propagation of ultrasonic waves (compressional and shear) through 2-in. (0.051 m) cubes. The increase of the ultrasonic
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b2d51374ed0680fe7933f086956249a5
https://doi.org/10.1520/cca10086j
https://doi.org/10.1520/cca10086j