Contact Us

Home   /   Contact

Keep In Touch With Us.

Location

Zhengzhou, China

Study on the sulfate resistance of containment

2020-4-10  Negative effect of pipes on the sulfate resistance of concrete has been analyzed. is formed between the pipe and the cement-stone matrix, the sulfate more easily penetrate into the containment concrete through the ITZ. Finally, a model of the corrosion resistance coefficient of compressive strength of concrete with pipe under the sulfate

Materials Free Full-Text Sulfate Resistance in

This study explores the effect on sulfate resistance of the use of ornamental granite industry waste as a supplementary cementitious material (at replacement ratios of 10% and 20%) in cement manufacture. The present paucity of scientific knowledge of the behaviour of these new cements when exposed to an external source of sulfates justifies the need for, and the originality of, this research.

Stone crusher dust as a fine aggregate in Concrete for

2017-12-12  Hameed and Sekar, 2009 also reported the resistance of Green concrete containing crusher dust against sulfate attack (Mg SO 4 and Na 2 SO 4) is higher than the conventional concrete. Also they have reported acid resistance ( H 2 SO 4) is higher than the conventional concrete. The durability of quarry rock dust concrete under sulphate and acid

(PDF) EFFECT OF BORON-CONTAINING CEMENT ON

PDF Sulfate attack of cement and concrete is a very serious problem caused by aggressive influence of sulfate solutions from many different sources. Find, read and cite all the research you

Sulfate damage to concrete floors on sulfate-bearing

2015-5-21  4 Sulfate damage to concrete floors on sulfate-bearing hardcore Outline of the guidance document Sections 1 to 5 provide information on the mechanism of sulfate attack and where it is most likely to be found. Key points made are: • For deleterious sulfate attack to occur in a ground floor slab, the concrete must be of

Effects of Substances on Concrete and Guide to

2014-9-29  * Pozzolans and slag that have been determined by testing according to ASTM C1012 or by service record to improve sulfate resistance may also be used. Maximum expansions when using ASTM C1012: Moderate exposure—0.10% at 6 months; Severe exposure—0.05% at 6 months or 0.10% at 12 months; Very Severe exposure—0.10% at 18 months.

Stone crusher dust as a fine aggregate in Concrete for

2017-12-12  dust against sulfate attack (Mg SO 4 and Na 2 SO 4) is higher than the conventional concrete. Also they have reported acid resistance ( H 2 SO 4) is higher than the conventional concrete. The durability of quarry rock dust concrete under sulphate and acid action is higher than the conventional concret. Similarly water Absorption found to be

Sodium Sulphate Effect on Cement Produced with

In this study, the blended cements produced by using the building stone waste were exposed to sulphate solution and the cement properties were examined. Prepared mortar specimens were cured under water for 28 days and then they were exposed to three different proportions of sodium sulphate solution for 125 days. Performances of cements were determined by means of compressive strength and

Experiment Analysis of Concrete’s Mechanical

The mechanism of concrete deterioration in sodium sulfate solution is investigated. The macroperformance was characterized via its apparent properties, mass loss, and compressive strength. Changes in ions in the solution at different sulfate attack periods were tested by inductively coupled plasma (ICP). The damage evolution law, as well as analysis of the concrete’s meso- and

An Overview of Pumice Stone as a Cementitious

Pumice stone is a natural sponge-like lightweight aggregate formed during the rapid cooling and solidification of molten lava. After suitable preparation, it can be used as an aggregate to produce lightweight concrete or as a cementitious material to produce blended cement or geopolymer. This article focused on the influence of pumice powder (PP) on fresh properties and hardened properties of

Sulfate-resistant portland cement

Sulfate-resistant Portland cement, including Portland cement clinker, calcium sulfate and igneous aluminosilicate rocks with crystalline structure, characterized in that the rock is the size of the crystals to 20 μm and contains minerals, presents solid solutions avgtoo-anorthite series, the crystals in the structure of the rock is surrounded

Effect of Curing Condition on Resistance to Chloride

Changes in the salt attack resistance of concrete using ground granulated blast furnace slag (GGBFS) were examined based on different curing conditions. These conditions were divided into air and underwater curing. Three concrete mixes with GGBFS replacement ratios of 0% (control group), 30% and 60% were fabricated. Then, evaluation of concrete compressive strength, evaluation of chloride ion

Feasibility to use of Fly Ash & Stone Dust as Partial

2019-1-23  present investigation, Partial Replacement of Cement with Fly Ash and Sand with stone quarry dust Used in Concrete by 5, 10, 15, 20% and 30 % respectively to produce Concrete. Concrete is tested for Compression, split tension and flexural strengths. The results are quite encouraging for use of fly ash and stone quarry dust in producing Concrete.

Effects of Wood Ash and Waste Glass Powder on

Cement is replaced by fly ash, stone dust, ground granulated blast-furnace slag etc. and sand is replaced by stone dust, fly ash etc., Ravina, D. and Mehta, P. K. [7] [8] . to find out the strength properties, such as the compressive strength and flexural strength of concrete, and this through a partial replacement of both cement and sand by

Effect of Silica Fume on Concrete Properties and

2016-9-9  which results in a higher resistance to sulfate attack. Im-provement in durability will also improve the ability of silica fume concrete in protecting the embedded steel from corro-sion (King, 2012). With regard to handling and availability, SF is available in dry and wet conditions. The former can be pro-

Types and Causes of Concrete Deterioration

2014-4-14  Concrete can deteriorate for a variety of reasons, and concrete damage is often the result of a combination of factors. The following summary discusses potential causes of concrete deterioration and the factors that influence them. CORROSION OF EMBEDDED METALS Fig. 1. Corrosion of reinforcing steel is the most common cause of concrete

The Effect of Using Wastewater from Stone Industry in

2019-2-19  This research presents an attempt of using wastewater from stone slurry waste in production of concrete. Several concrete mixtures were prepared by using tap water and stone slurry wastewater at different w/c ratios and replacement ratios of wastewater in substitute of tap water. Testing of concrete samples included slump, compressive strength, flexural strength and absorption.

cement dust resistivity masingita-ps.co.za

Concrete Polishing & Sealing Ltd. Professional sealing and coating serving Ottawa, Montreal, dust resistance and increased hardness. By Electrical conductivity of granulated slag–cement kiln dust

Feasibility to use of Fly Ash & Stone Dust as Partial

2019-1-23  present investigation, Partial Replacement of Cement with Fly Ash and Sand with stone quarry dust Used in Concrete by 5, 10, 15, 20% and 30 % respectively to produce Concrete. Concrete is tested for Compression, split tension and flexural strengths. The results are quite encouraging for use of fly ash and stone quarry dust in producing Concrete.

Effect of Filler Type on the Durability of Asphalt

2018-7-16  the effect of mineral filler types (three types, limestone dust, Portland cement and hydrated lime) in the durability of asphalt concrete mixture. To achieve the objective of this study, Marshall mix design method was utilized to produce asphalt concrete mixes at their optimum asphalt content.

Sulfate-resistant portland cement

Sulfate-resistant Portland cement, including Portland cement clinker, calcium sulfate and igneous aluminosilicate rocks with crystalline structure, characterized in that the rock is the size of the crystals to 20 μm and contains minerals, presents solid solutions avgtoo-anorthite series, the crystals in the structure of the rock is surrounded

Effects of Wood Ash and Waste Glass Powder on

Cement is replaced by fly ash, stone dust, ground granulated blast-furnace slag etc. and sand is replaced by stone dust, fly ash etc., Ravina, D. and Mehta, P. K. [7] [8] . to find out the strength properties, such as the compressive strength and flexural strength of concrete, and this through a partial replacement of both cement and sand by

Can We Use Crusher Dust As A Substitute For Fly Ash

Stone Dust in Concrete: Effect on Compressive Strength. Quarry dust can be utilized in concrete mixtures as a good substitute for natural river sand giving higher strength at 50% replacement (Balamurgan et al., 2013). While using crushed stone dust as fine aggregate in concrete it is found that there is increase in compressive, flexural and

US5772752A Sulfate and acid resistant concrete and

The present invention relates to concrete, mortar and other hardenable mixtures comprising cement and fly ash for use in construction and other applications, which hardenable mixtures demonstrate significant levels of acid and sulfate resistance while maintaining acceptable compressive strength properties. The acid and sulfate hardenable mixtures of the invention containing fly ash comprise

Strength and Durability Studies of Ternary Concrete

2018-8-13  Durability of concrete is its Resistance to deteriorating agencies to which the concrete may be exposed planned to investigate the effect of marble dust and steel fiber on compressive strength, split tensile strength, flexural available crushed stone of 20mm and 10mm size in 70:30 proportion. The aggregates were washed to remove drit, dust

Types and Causes of Concrete Deterioration

2014-4-14  Concrete can deteriorate for a variety of reasons, and concrete damage is often the result of a combination of factors. The following summary discusses potential causes of concrete deterioration and the factors that influence them. CORROSION OF EMBEDDED METALS Fig. 1. Corrosion of reinforcing steel is the most common cause of concrete