This study proposed a new binder as an alternative to conventional cement to reduce the heat of hydration in mass concrete elements. As a main cementitious material, low-heat cement (LHC) was considered, and then fly ash (FA), modified FA (MFA) by vibrator mill, and limestone powder (LP) were used as a partial replacement of LHC. The addition of FA delayed the induction period at the hydration ...

Abstract Limestone wastes have accumulated in large quantities countries all over the world. To reduce this materials work is presented. The goal of paper to study influence limestone powder on physical and mechanical fired clay bricks. It as replacement clay, varying content 5, 10, 15 20 wt % . water / soil ratio constant 0.3. Three stages firing are presented achieve maximum temperature. firs...

Limestone with a particle size of less than 5 mm was rapidly calcined in high-temperature resistance furnace at 1623 K to simulate the conditions rapid calcination limestone ultra-high temperature converter. In this study, decomposition mechanism and characteristics small-sized steelmaking were investigated. The study shows that shrinking sphere or cylinder models phase boundary reaction found ...

Limestone is a rock belonging to the type of sedimentary rock, formed as result natural sedimentation process. non-metallic mineral that used in various sectors, such paint industry, glass plastics, paper liming on agricultural land and also metal smelting industry. products produced by PT. Sugih Alamanugroho form calcium carbonate flour (powder) with sizes 800 1,200 mesh. Before being marketed...

This experiment was conducted to evaluate the effects of single or multi-particle size limestone on the egg shell quality, egg production, egg quality and feed intake in laying hens. A total of 280 laying hens (ISA brown) were used in this 10-wk trial. Laying hens were randomly assigned to 4 treatments with 14 replications per treatment and 5 adjacent cages as a replication (hens were caged ind...