Concrete and Mortar Production using Stone Siftings

The monograph analyses the state of the art (problem) in using stone siftings and aspiration dust obtained in natural stone crushing for producing concrete aggregates and fillers for dry construction mixtures and mortars on their basis. The influence of disperse fraction in stone siftings and aspiration dust on structural, mechanical and rheological properties of cement composite construction materials is investigated. Hypothesis for obtaining technological conditions, providing positive effect of the disperse fraction on strength and other properties of cement based concrete and mortar is proposed. Experimental results on studying properties of dry mixtures and mortars on their basis using stone crushing aspiration dust as filler are presented. Efficiency of using fillers, based on igneous rocks, on adhesive and other properties of mortars is demonstrated. Methodology for design of mortars composition for given mortar properties in case, when aspiration dust is used as filler, is proposed. The monograph presents experimental results on fine-grained concrete including as a main filler stone siftings with up to 20% of disperse fraction. It is shown that it is possible to produce fine grain concrete class ?20/25…?60/75. Technological parameters of vibro-pressed fine-grained concrete with raw stone siftings are developed. Methodologies for composition design of fine-grained concrete with given workability are proposed. Possibility for producing macroporous light-weight concrete for walls and filtration materials, based on stone siftings fillers is shown.

Problem of using industrial waste. Wastes of stone crushing Problem of using industrial wastes in construction Selecting the way of industrial waste use Waste of stone crushing and ways for its application Properties of stone crushing wastes Theoretical provisions for efficient application of stone crushing wastes in concretes and mortars Influence of dispersed mineral fillers on the structure formation of cement systems Influence of mineral fillers on the properties of cement mortars and concrete Ways of Activating Mineral Fillers Scientific hypothesis Fine-grained concrete based on stone siftings General characteristic Influence of granite filler on fine-grained concrete properties Influence of granite filler dispersion on FGC properties Composition design of fine-grained concrete with granite siftings The effect of grain composition on FGC properties FGC based on low-flowable mixtures High strength FGC Complex plasticizing admixtures for producing high-strength concrete on granite siftings Vibro-pressed fine grained concrete based on stone siftings Technological background Influence of granite filler grain composition on formation of vibro pressed fine-grained concrete structure Influence of granite siftings on water demand, output coefficient and strength of vibro-pressed concrete Effect of the fractions volume ratio in siftings on VFC properties Influence of plasticizers and air entrained admixtures Effect of heat treatment on VFC properties Structure and properties of VFC determining its durability Composition design of VFC with stone crushing siftings Macroporous fine grained concrete based on stone crushing waste General features of macroporous concrete technology (MPC) Properties of macroporous concrete based on stone crushing siftings Heavy concrete based on stone siftings Influence of granite siftings on normal-weight concrete properties Design of concrete compositions using stone crushing siftings Dry construction mixtures and mortars on their basis using aspiration dust Aspiration granite dust as a possible disperse filler for mortars Technological properties of mortar mixtures with filler (AGD) Adhesion properties of mortars with ?GD Strength and deformation properties of modified mortars using AGD Frost resistance of mortars with AGD Design of mortars compositions with granite filler References

Leonid Dvorkin, Vadim Zhitkovsky, Yuri Ribakov