Results 81 to 90 of about 116,935 (246)

Recycled powder as filler admixture in cementitious systems : production and characterization [PDF]

open access: yes, 2016
In concrete production, aggregate represents almost 75% of the materials used. The exploitation of natural sources for this purpose also causes an environmental impact, while deposition of wastes from construction industry pollutes soil and water.
Alderete, Natalia Mariel   +3 more
core   +1 more source

Materials and Mix Optimization Procedures for PCC Pavements;TR-484, March 2006 [PDF]

open access: yes, 2006
Severe environmental conditions, coupled with the routine use of deicing chemicals and increasing traffic volume, tend to place extreme demands on portland cement concrete (PCC) pavements.

core  

Feasibility Tests on Concrete with Very-High-Volume Supplementary Cementitious Materials

open access: yesThe Scientific World Journal, 2014
The objective of this study is to examine the compressive strength and durability of very high-volume SCM concrete. The prepared 36 concrete specimens were classified into two groups according to their designed 28-day compressive strength.
Keun-Hyeok Yang, Yong-Su Jeon
doaj   +1 more source

A review of sample preparation and its influence on pH determination in concrete samples [PDF]

open access: yes, 2017
If we are to monitor the chemical processes in cementitious materials, then pH assays in the pore solutions of cement pastes, mortars, and concretes are of key importance.
Aguado de Cea, Antonio   +1 more
core   +2 more sources

Mechanical Properties and Hydration Mechanism of Iron Tailings–Cement-Based Supplementary Cementitious Materials

open access: yesBuildings
The preparation of cement-based supplementary cementitious materials is an important method for the efficient use of iron tailings and the reduction in CO2 emissions. The aim of this study is to improve the reactivity of iron tailings by mixing them with
Ziyang Hu   +5 more
doaj   +1 more source

Carbonation-induced early corrosion propagation based service life assessment model (CECP-SAM) [PDF]

open access: yesMATEC Web of Conferences
Supplementary cementitious materials (SCMs) are widely used for sustainable concrete. However, this is challenged due to the deteriorated resistance towards carbonation-induced corrosion.
Chen Lijie, Kai Leung Su Ray
doaj   +1 more source

Durability and Smart Condition Assessment of Ultra-High Performance Concrete in Cold Climates [PDF]

open access: yes, 2016
The goals of this study were to develop ecological ultra-high performance concrete (UHPC) with local materials and supplementary cementitious materials and to evaluate the long-term performance of UHPC in cold climates using effective mechanical test ...
Allena, Srinivas   +2 more
core  

Compressive Strength of Volcanic Ash/Ordinary Portland Cement Laterized Concrete [PDF]

open access: yes, 2010
This study investigates the effect of partial replacement of cement with volcanic ash (VA) on the compressive strength of laterized concrete. A total of 192 cubes of 150mm dimensions were cast and cured in water for 7, 14, 21, and 28 days of hydration ...
Olawuyi, B. J, Olusola, K. O
core   +2 more sources

Effect of superabsorbent polymers (SAP) on fresh state mortars with ground granulated blast-furnace slag (GGBS) [PDF]

open access: yes, 2016
Although cementitious materials are the main construction materials and worldwide produced, there is still a major concern about their sustainability and durability, especially in terms of conserving resources, reducing wastes, and decreasing the ...
Almeida, Fernando Do Counto Rosa   +1 more
core   +3 more sources

Potential use of Jordanian volcanic tuffs as supplementary cementitious materials

open access: yesCase Studies in Construction Materials, 2018
Ten Volcanic tuffs collected from several locations in the northern region of Jordan were investigated for potential use as supplementary cementitious materials.
Ayman Ababneh, Faris Matalkah
doaj   +1 more source

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