نتایج جستجو برای: pozzolanic materials
تعداد نتایج: 436654 فیلتر نتایج به سال:
The service life of real construction elements is usually long, so the study behavior cement-based materials with new pozzolanic additions in very long term, after several hardening years, could be interesting. Here, influence using waste brick powder as 10% and 20% clinker substitution microstructure durability-related parameters mortars 1500 days (approximately 4 years) has been studied. Acco...
having conducted the experiment and analysed the data, the researcher computed the groups mean scores and variances for the test relating to the research question. as the final atep, a t-test was conodonted for the hypothesis. as noted earlier, the significance level was determined at .05 and .01 respectively. the observed t-value was higher than the critical t-value at. 5 and .01 levels. conse...
Abstract This paper deals with the use of calcinated clay and micronized limestone as supplementary cementitious materials (SMCs) for preparation blended Portland cement CEM II/B-M (Q-LL). Clay used in this study was at 700°C pozzolanic activity after calcination assessed using accelerated R3 test modified Chapelle test. The influence addition on mechanical properties hydration process investig...
In the present study, effect of pozzolanic material (Metakaolin and Silica fume) is studied through compressive and Flexural strength in cement concrete. Metakaolin and silica fume area used as cement replacement materials at 5%, 10% and 15% by mass keeping water–cement ratio as 0.42 Compressive and Flexural strength were observed after 7 and 28 days of curing. Silica fume is a by products resu...
The use of industrial by-products as admixture to ASTM Type I cement (ordinary Portland cement (OPC)) was investigated with the objective of improving the solidification of organic marine clayey soils. The industrial by-products considered in this paper were oyster-shell powder (OSP), steelmaking slag dust (SMS) and fuel-gas-desulfurized (FGD) gypsum. The industrial by-products were added to OP...
Objective of the work: This study focused on investigations pozzolanic activity pumice under different curing temperatures and durations. 
 Materials Method: Pumice powder, standard sand slaked lime were used as materials in this study. Within scope study, only one mixture design was following TS 25. In total, 9 regimes such three heat cures at 55˚C, 75˚C, 90˚C durations 7, 14, 28 days for...
The utilization of recycled brick aggregate (RBA) and powder (RBP) in cementitious materials helps the reclamation clay waste construction demolition waste. This work studied properties with RBA as RBP supplementary material. has lower apparent density higher water absorption than natural aggregate, an irregular micro-structure contains high content silicon aluminum oxides possesses excellent p...
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