Blended cements based on the partial replacement of Portland cement clinker (PC) by wastes have been the subject of many investigations in recent years. The use of the replacement materials offer cost reduction, energy savings, arguably superior products, and fewer hazards in the environment. These materials participate in the hydraulic reactions, contributing significantly to the composition a...

Pozzolans have been used to improve the some properties of concrete and also to reduce the cost of producing cement. Many researchers investigated pozzolanic cements, which were mostly made with kind of artificial or natural pozzolans. While the most recent investigations on pozzolan containing cements study the effect of pozzolan type, replacement amount and fineness, this study was investigat...

Fly ash is a waste produced in coal-fired thermal power stations. It has pozzolanic properties and can therefore be stabilized to achieve higher strength and durability required for use as pavement substructure specifically as subbase or base layer material. The stabilization of fly ash can be achieved by adding either cement, lime or other materials. Stabilization of fly ash with available ind...

Nowadays ensuring normal operation of buildings made monolithic reinforced concrete is great relevance. Bearing building structures in the process or erection can have defects and damages various origins. There a need to develop repair compositions ensure durability reliability buildings. In this paper we conducted research developed composition fine-grained (FGC) on basis modification improvem...

Recycled brick powder (RBP) is a kind of solid waste material with pozzolanic activity, which can partially replace cement as cementitious to prepare concrete. In this paper, ultra-high-performance concrete (UHPC) was prepared by RBP. The effects different RBP contents mineral admixture on the mechanical properties and microstructure UHPC were studied experiments. results show that has certain ...

This paper presents the results of a study on the effect of temperature on geopolymers manufactured using pozzolanic materials (fly ash). In this paper, we report on our investigation of the performance of porous geopolymers made with fly ash after exposure to temperatures from 600 °C up to 1000 °C. The research methodology consisted of pozzolanic materials (fly ash) synthesized with a mixture ...

Pengurangan faktor air semen (fas) dan penambahan admixture pozzolanic seperti (silicafume) sering digunakan untuk memodifikasi komposisi beton mengurangi pori-pori. Di Indonesia material tambahan pada campuran telah banyak digunakan. Bahan-bahan limbah di sekitar lingkungan dapat dimanfaatkan sebagai bahan tambah dalam beton. Salah satu pemanfaatan alternatif cangkang keong bakau. Keong bakau ...

In recent years, with the rapid development of biomass combustion power generation and heat as main application industry, amount byproduct biological ash is also increasing year by year. How to effectively utilize in a more green, environmental friendly economic way has become research hotspot. view problem that mechanical properties cement stone decreased when conventional latex was used tough...