A solidification/stabilisation (S/S) process of washed municipal incinerator fly ash with Portland cement was used to manufacture solidified products with high ash content (55 and 70 wt.% of solids) and good performance characteristics in terms of setting, dimensional stability, compressive strength, and environmental quality. The S/S product containing 70 wt.% fly ash aged for 180 days at 20°C...

This study analyzed uniaxial compression strength over time by preparing a homogel specimen from a bio grouting material, a cement-like form produced by environment-friendly microbial reactions. Among chemical grouting methods, the most commonly used method is the Labile Waterglass method. In this study, the homogel uniaxial compressive strength of Labile Waterglass (LW) injection material and ...

Magnesium oxychloride cement (MOC) foam concrete (MOCFC) is an air-hardening cementing material formed by mixing magnesium chloride solution (MgCl2) and light-burned magnesia (i.e., active MgO). In application, adding caustic dolomite powder into magnesite can reduce the MOCFC production cost. The brine content of MOC changes with incorporation powder. This study investigated relationship betwe...

In this paper, the main strength of relationship between water-cement ratio and concrete, it uses contrast test different water cement ratio, finally, gets regular change concrete strength. The results show that: cement. when large stone: small water: admixture is 340: 618: 1009: 433: 139: 6.8, within range 0.371-0.479. sample decreases with increase ratio. Finally, obtained by fitting.

Neural networks have recently been broadly used in civil engineering applications due to their versatile capability as a simulator for the complex behavior of many problems (Adeli 2001). Compressive strength of cement mortar is mainly affected by water/cement ratio and aggregate/cement ratio. Recently, high performance concrete has been actively studied, however it is more difficult to predict ...

The present study focuses on exploring an array of alkaline waste residues, procured from diverse sources as means for sequestering maximal CO2. Alkaline waste residues undertaken for the study included: (1) Cement Bag Filter Dust, (2) Finished Cement Sample, (3) Marble Dust and (4) Baghouse Dust. Experiments were conducted in a self fabricated Carbonation reactor under 80% CO2 concentration an...

OBJECTIVES Cement contains hexavalent chromium, which is a human carcinogen. However, its effect on cancer seems inconclusive in epidemiologic studies. The aim of this retrospective cohort study was to elucidate the association between dust exposure in the cement industry and cancer occurrence. METHODS The cohorts consisted of male workers in 6 Portland cement factories in Korea. Study subjec...

the present paper investigates the influence of stabilization with cement, peat ash, and silica sand on permeability coefficient (kv) of compacted clay, using a novel approach to stabilize the clay with peat ash as a supplementary material of cement in the compacted and stabilized soil. in order to assess the mentioned influence, test specimens of both untreated and stabilized soil have been te...

this paper is based on an experimental research that examined the effects of concrete`s major parameters on durability of concrete pavements and curbs under freezing and thawing cycles. these parameters include concrete mix design parameters such as water-cement ratio, fine aggregate percentage and using air entraining admixture and simulating real freeze-thaw cycles that infrastructures underg...