الفهرس 
INTRODUCTION AND OBJECT OF INVESTIGATIONOnly 14 pages are availabe for public view
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Abstract
In this study the possibility of using alternative waste materials with cementitious properties was studied. Lime rich sludge (LRS) (solid waste of acetylene industry), ground granulated blast furnace slag (GGBFS), fine kaolinite sand (FKS) (by-product during kaolin mineralization) and fired fine kaolinite sand (FFKS) were used in the production of cementitious building materials. Different series of dry mixtures system were investigated in the present study.
1- First series was prepared from LRS and GGBFS (mixes I, II and III).The hardened specimens made from mix II (25% LRS and 75% GGBFS) showed higher compressive strength values than those of the hardened specimens made from mixes I and III especially at later ages of hydration indicating that composition represents the optimum composition for activation of GGBFS by LRS.
2- Second series was prepared from LRS, GGBFS and FKS (mixes IA, IIA, and IIIA). Whileas third series was prepared from LRS, GGBFS and FFKS. Addition of fine kaolinite sand (FKS) or fired fine kaolinite sand (FFKS) to LRS and GGBFS systems resulted in a marked improvement in the hydraulic properties especially in the early hydration ages; this is related to the higher rate of pazzolanic interaction between the lime in LRS and the aluminosilicate constituents in fine kaolinite sand or fired kaolinite sand.
3- The final series was prepared from GGBFS, Ordinary Portland cement (OPC), with and without kaolinite sand (mixes IC, IIC and IIIC).These mixes showed higher hydradulic properties and this related to the pozzolanic interaction between the free lime liberated from the hydration of OPC with the active silica present in FKS or FFKS.