scholarly journals Long-term leaching behaviours of cement composites prepared by hazardous wastes

RSC Advances ◽  
2018 ◽  
Vol 8 (49) ◽  
pp. 27602-27609
Author(s):  
Zhenzhou Yang ◽  
Ji Ru ◽  
Lili Liu ◽  
Xidong Wang ◽  
Zuotai Zhang
Keyword(s):  
Environmental Impact ◽  
Portland Cement ◽  
Ordinary Portland Cement ◽  
Saline Water ◽  
Hazardous Wastes ◽  
Cement Composites ◽  
Leaching Tests ◽  
Water Conditions

In order to evaluate the long-term environmental impact of Eco-Ordinary Portland Cement (EOPC) prepared by hazardous wastes, long-term leaching tests were conducted on the EOPC composites under deionized and saline water conditions.

Fabrication and properties of 3-3 type PZT-ordinary Portland cement composites

2021 ◽  
Vol 305 ◽  
pp. 124815
Author(s):  
Wei Liu ◽  
Lehui Zhang ◽  
Yu Cao ◽  
Jianhong Wang ◽  
Peikang Bai ◽  
...  
Keyword(s):  
Portland Cement ◽  
Ordinary Portland Cement ◽  
Cement Composites

Dispersion of graphene oxide–silica nanohybrids in alkaline environment for improving ordinary Portland cement composites

2020 ◽  
Vol 106 ◽  
pp. 103488 ◽  
Author(s):  
Junlin Lin ◽  
Ezzatollah Shamsaei ◽  
Felipe Basquiroto de Souza ◽  
Kwesi Sagoe-Crentsil ◽  
Wen Hui Duan
Keyword(s):  
Graphene Oxide ◽  
Portland Cement ◽  
Ordinary Portland Cement ◽  
Cement Composites ◽  
Alkaline Environment

A Study of Ordinary Portland Cement Hydration With Wood by Isothermal Calorimetry

Holzforschung ◽  
1999 ◽  
Vol 53 (1) ◽  
pp. 104-108 ◽  
Author(s):  
N. Sauvat ◽  
R. Sell ◽  
E. Mougel ◽  
A. Zoulalian
Keyword(s):  
Portland Cement ◽  
Calcium Chloride ◽  
Activated Charcoal ◽  
Ordinary Portland Cement ◽  
Cement Hydration ◽  
Isothermal Calorimetry ◽  
Cement Composites ◽  
Total Enthalpy ◽  
Portland Cement Hydration ◽  
Wood Cement Composites

Summary As an essential preliminary to understand the hydration of wood-cement composites, the effects of some additives on the delayed setting due to wood of an Ordinary Portland Cement have been investigated by isothermal calorimetry. With the addition of calcium chloride and activated charcoal, an increase of 50% of the total enthalpy is observed in wood-cement composites hydration, because calcium chloride mostly influences aluminate phases and activated charcoal silicate phases.

Fabrication and properties of PZT–ordinary Portland cement composites

2007 ◽  
Vol 61 (30) ◽  
pp. 5206-5208 ◽  
Author(s):  
A. Chaipanich ◽  
N. Jaitanong ◽  
T. Tunkasiri
Keyword(s):  
Portland Cement ◽  
Ordinary Portland Cement ◽  
Cement Composites

scholarly journals Influence of Cement Replacement with Fly Ash and Ground Sand with Different Fineness on Alkali-Silica Reaction of Mortar

Materials ◽  
2021 ◽  
Vol 14 (6) ◽  
pp. 1528
Author(s):  
Suwat Ramjan ◽  
Weerachart Tangchirapat ◽  
Chai Jaturapitakkul ◽  
Cheah Chee Ban ◽  
Peerapong Jitsangiam ◽  
...  
Keyword(s):  
Fly Ash ◽  
Portland Cement ◽  
Ordinary Portland Cement ◽  
Partial Substitution ◽  
Alkali Silica Reaction ◽  
Inert Material ◽  
Fly Ashes ◽  
River Sand ◽  
Concrete Materials

The alkali-silica reaction (ASR) is an important consideration in ensuring the long-term durability of concrete materials, especially for those containing reactive aggregates. Although fly ash (FA) has proven to be useful in preventing ASR expansion, the filler effect and the effect of FA fineness on ASR expansion are not well defined in the present literature. Hence, this study aimed to examine the effects of the filler and fineness of FA on ASR mortar expansion. FAs with two different finenesses were used to substitute ordinary Portland cement (OPC) at 20% by weight of binder. River sand (RS) with the same fineness as the FA was also used to replace OPC at the same rate as FA. The replacement of OPC with RS (an inert material) was carried out to observe the filler effect of FA on ASR. The results showed that FA and RS provided lower ASR expansions compared with the control mortar. Fine and coarse fly ashes in this study had almost the same effectiveness in mitigating the ASR expansion of the mortars. For the filler effect, smaller particles of RS had more influence on the ASR reduction than RS with coarser particles. A significant mitigation of the ASR expansion was obtained by decreasing the OPC content in the mortar mixture through its partial substitution with FA and RS.

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