The Compressive Strength of High-Performance Concrete and ...

The compressive strength of silica fume concretes was investigated at low water-cementitious materials ratios with a naphthalene sulphonate superplasticizer. The results show that partial cement replacement up to 20% produce, higher compressive strengths than control concretes, nevertheless the strength gain is less than 15%.

Learn More

partial cement replacement: Topics by Science.gov

Use of waste brick as a partial replacement of cement in mortar. ... Generally the compressive strength of OPC concrete is higher compared to POFA-ESP ...

Learn More

Workability and compressive strength properties of normal ...

2019年9月7日 — ... weight concrete (NWC) using high dosage of fly ash cement replacement. T. ... The strength of concrete reduces with an increment of fly ash. 由 SA Shaikuthali 著作 · ‎2019 · ‎被引用 3 次 · ‎相關文章

Learn More

Effects of Particle Size and Cement Replacement of LCD ...

FlowMix 3000S, specific gravity: , pH: ) was added at 1% for a high strength and improving the workability of concrete. The specimens were followed by KS F 2403 ... 由 SK Kim 著作 · ‎被引用 16 次 · ‎相關文章

Learn More

Durability of concrete with pitchstone fines as a partial ...

This paper investigates the durability of concrete with PF using rapid chloride penetration test (RCPT). RCPT determines the electrical conductance of concrete which indicates its resistance to penetration of chloride ions. In this study, RCPT was carried out on 28, 56 and 77-days on concrete specimens with 10, 20 and 30% PF replacement of cement.

Learn More

Sustainable Use of Recycled Glass Powder as Cement ...

跳至 Variation of Compressive Strength — Compressive strength of concrete decreased as RGP replacement level increased, 20 RGP and 30 RGP showed ... 由 N Tamanna 著作 · ‎2020 · ‎被引用 1 次 · ‎相關文章

Learn More

Effect of Fly Ash on Strength and Durability Parameters of ...

high strength, durability and reduction in cement production. The optimum fly ash replacement percentage for obtaining maximum 28- day’s strength of concrete ranged from 5% to 20%. Cement replacement up to 20% with fly ash leads to increase in compressive strength, for M20 grade of concrete.

Learn More

Cement Combinations for Durable Concrete

Secondly concrete samples with 10%, 40% and 60% replacement of cement by fly ash were produced, using an appropriate amount of (super)plasticizer to obtain good workability. The compressive strength of the mixes at young age decreased with increasing cement replacement level.

Learn More

Alternatives to Cement in Concrete – A Review - IJSER

high purity commercial metakaolin to replace certain amount of cement in the concrete. Concrete properties such as strength development, durability, chloride ... 由 A Lahri 著作 · ‎相關文章

Learn More

Durability and Compressive Strength of High Cement ... - MDPI

2018年11月6日 — As a result, concrete structures built with SCC may still be more durable. Partial replacement of cement with GGBS in SCC enhances compressive ... 由 O Mohamed 著作 · ‎被引用 7 次 · ‎相關文章

Learn More

Cement Replacement - an overview | ScienceDirect Topics

In addition, higher levels (>10%) of silica fume as cement replacement can also increase the brittleness of the concrete. Reports indicate that the splitting tensile strength of concrete containing silica fume does not improve at concentrations exceeding 15% replacement (Bhanja & Sengupta, 2005; Hooton, 1993).

Learn More

PDF Mechanical Properties and Durability of Concrete With ...

in concrete. Results show that concrete with 20% cement replacement although it has minor strength loss possess increase durability performance. Results also shows that concrete mixtures with ceramic aggregates perform better than the control concrete mixtures concerning compressive strength and chloride diffusion.

Learn More

[PDF] Durability and Compressive Strength of High Cement ...

This study examines durability and mechanical properties of sustainable ... Strength of High Cement Replacement Ratio Self-Consolidating Concrete.

Learn More

Cement Replacement Material - an overview | ScienceDirect ...

Concrete is consumed in large quantities in construction. Each human being consumes one tonne of concrete per year, which makes it the substance with the second-highest consumption, only water is higher (Concrete Centre, 2003). Chapter 5 of the book is dedicated to the sustainability of cement, concrete and cement replacement materials in ...

Learn More

Study of Properties of High Strength Concrete Prepared by ...

mechanical properties of high strength concrete using weathered crystalline rock sand as fine aggregate. used as partial replacement of cement by 5 to 30%. Keywords— High strength concrete, Weathered crystalline rock sand, M-Sand. I. INTRODUCTION Concrete is a widely used construction material around the

Learn More

Concrete Durability| Concrete Construction Magazine

Nov 15, 2012 · The paper, “202 Observations On Concrete That Is Too-Quickly-Strong,” cites cases where concrete cracked because it was too strong from too much cement and 66 investigations that related durability problems to cement hydrating too rapidly because of high values of …

Learn More

Durability Properties and Microstructure of Ground Granulated ...

May 20, 2014 · Ground granulated blast-furnace slag (GGBS) is a green construction material used to produce durable concrete. The secondary pozzolanic reactions can result in reduced pore connectivity; therefore, replacing partial amount of Portland cement (PC) with GGBS can significantly reduce the risk of sulfate attack, alkali–silica reactions and chloride penetration. However, it may also reduce the ...

Learn More

WORKABILITY AND STRENGTH CHARACTERISTICS OF M60 …

up to 1% replacement of cement. Based on the experimental results, it was noticed that at 1% replacement of cement, the compressive strength of the concrete was increased by 6% when compared to the conventional concrete. This concrete is used at the places where high strength and low permeability are required. Keywords: Nano technology, Nano ...

Learn More

WORKABILITY AND STRENGTH CHARACTERISTICS OF M60 GRADE ...

up to 1% replacement of cement. Based on the experimental results, it was noticed that at 1% replacement of cement, the compressive strength of the concrete was increased by 6% when compared to the conventional concrete. This concrete is used at the places where high strength and low permeability are required. Keywords: Nano technology, Nano ...

Learn More

Paper Durability of concrete with high cement replacement

The present study also indicated that an alternative durable concrete could also be made with 25 vol. % of cement replaced with silts and clay using a water/cement (w/c) ratio of 0.5. That is, the cement and water contents were less than those in OPC. Also, the cost of concrete will be lowered. 由 WWJ Chan 著作 · ‎2000 · ‎被引用 67 次 · ‎相關文章

Learn More

Leave a Reply

Your email address will not be published. Required fields are marked *