HUMBER TEST PROVES CEMSAVE HEAT EFFECT

A report is presented of investigations undertaken to check the validity of suggestions that in very large pours, all types of cement and cement - replacement materials exhibit the same heat gain characteristics as ordinary portland cement. Laboratory, on-site measurements were made to check the performance of cemsave (a ground granulated blast furnace slag) on the massive pours for the hessle Anchorage of the Humber Bridge. The parameters considered include temperature variation within the pour; strain distribution resulting from temperature variations; unrestrained thermal movement of the concrete; stress state and tendency of the concrete to crack during and at the end of the heat of hydration cycle; and performance of vertical construction joints. The tests were undertaken on three large pours, each containing different proportions of portland cement and cemsave: 100/0, 70/30, and 30/70. The results indicate that cemsave contributes less than cement in terms of temperature rise, and there is a notable difference between the portland cement and sulphate-resisting cement. Cemsave appeared to reduce both thermal gradients and also strain differentials associated with them. /TRRL/

Media Info

  • Features: Figures; Photos; Tables;
  • Pagination: p. 24-25
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00132245
  • Record Type: Publication
  • Source Agency: Transport and Road Research Laboratory (TRRL)
  • Files: ITRD, TRIS
  • Created Date: Jun 23 1976 12:00AM