碩士 / 國立交通大學 / 土木工程研究所 / 83 / In order to conform the usability of offshore sand for
concrete aggregate , the effects of sea-shells in marine
aggregate will be studied . Five different shell contains
amount and two different shapes of sea-shells will be
discussed . Under the conditions of two slump and four
water-cement ratio , some fresh and hardened concrete
properties will be investigated . The properties include
workability , settling , compressive strength , shrinkage ,
durability etc . Based on the test results , we expect that
the permissible amount and shape or size of sea-shells in
fine aggregate can be determined . Form the studies , it shows
that increasing contents of shell will increase fineness
modulus , improve compressive strength and dry shrinkage of
concrete , but have loss of durability . For shell shape
, flat shell reduce the workability and increas cofficient
of diffusion , but have the advantage of splitting tensile
strength . Cycloid shell will be advantage of workability ,
compressive strength and reduce cofficient of diffusion of
offshore sand concrete . Flat shell need more water and have
more dry shrinkage than cycloid shell . That of using more
cycloid shell will get an economic concrete mixing
proportioning .
| Identifer | oai:union.ndltd.org:TW/083NCTU0015061 |
| Date | January 1995 |
| Creators | Sheng-Wang Chen, 陳盛旺 |
| Contributors | Yi-Yu Kuo, 郭一羽 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | zh-TW |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 73 |
Page generated in 0.007 seconds