... ABSTRACT The purpose of this study is to establish a quality control method for the jet grouting process immediately after improvement or in the early stages of curing. Laboratory and field tests were conducted to understand the electrical resistivity characteristics of cement-enhanced soils...

... Retrogression of Cement for Ultra-high Temperature Deep Well Peng-Xiao LI1,2,3, Qing-Xiang MENG1,2,3, Xiao-Yang LI1,2,3, Yuan-Bo XIA1,2,3 ,Wei HOU1,2,3,Lei YANG1,2,3 (1. CNPC Tianjin Bo-Xing Engineering Science & Technology Limited Company, Tianjin, China; 2. Key Laboratory of Drilling Engineering, CNPC...

... ABSTRACT Nowadays, heavy metal pollution in seabed silt is becoming more and more serious. In this study, a new disposal method of using dredged sludge mud mixed with quicklime, sand and cement to produce bricks was proposed. Taking the water absorption and compressive strength of unburned...

... ABSTRACT This paper describes study on permeation of ultra-fine particle cement grout to sandy ground. The cement grouting method was one of the improvement methods to strengthen the sandy ground. However, the conventional cement grout was difficult to permeate into sandy ground. The purpose...

... ABSTRACT. A new formula to estimate the strength of cement-treated clay was proposed by the authors instead of the conventional formula determined by water-cement ratio. The key parameter in the new formula is a volumetric solid ratio, which is defined as a volume ratio of soil plus cement...

... ABSTRACT One new type of amphoteric ion polymer is developed as the retarder for CAPC which is the most promising system for using as the oil well cement to resist acid corrosion. Results show that the retarding effect of amphoteric ion polymer is excellent. Although, the amphoteric ion...

... to build embankments. The soft seabed soil mix with stabilizing agent (e.g. cement) are filled into large-size geotextile bags, the bags are placed by layers to form an embankment. This paper focuses on the engineering characters of bagged soil with low dosage of cement and the influence factors...

... is big on the Pacific coast of Russia. The corrosion resistance of alkaline concrete in comparison with the control on cement concrete hardening after six months in different environments (fresh water, sea water, sulfate solution, atmospheric conditions, normal hardening, freezing-thawing, wetting-drying...

... Abstract Calcium phosphate cement slurries used for thermal production wells cementing adapt to the soft formations and steam huff and puff were investigated. Calcium phosphate cement slurries were developed with density of 1.50 g/cm 3 and 1.90 g/cm 3 , respectively. The properties of cement...

... Abstract Marine dredged clay of high water content treated with low quantity of cement have been widely used as construction material for recycling, in Japan. In this study, strength mobilization of cement treated clay was carry out with different water content and cement content based...

... ABSTRACT The geotechnical characteristics of marine clay are large compressibility and low bearing capacity. To utilize the ground that consists of this type of soil, it is essential to carry out an optimal ground improvement procedure. The deep cement mixing and grouting method has been...

... ABSTRACT The artificial lightweight material obtained by mixing diatom soil and finely pulverized waste melting slag with slaked lime and cement under freezing and thawing test is investigated the possibility of usage for cold region. After freezing and thawing test, the effects of mixing...

... compressive and bending strength was determined under different doses of nanosilica and water-cement relations 0.39-0.50. Nanosilica increases compressive strength up to 72%. The dependences of concrete compressive and bending strength, density, characteristics of silica, hydrothermal solution, extraction...

... ABSTRACT We developed a new soil-cement material which was mixed with soil, water, vinylon fiber and cement. This material is superior with respect to water tightness especially. In this study, unconfined compressive strength tests, bending strength and shear strength tests of this material...

... content unconfined compression test quicklime unconfined compressive strength decomposed granite soil fluid dynamics cement muddy soil reuse technique flow in porous media specimen muddy soil earth-fill dam earth fill dam mariko suzuki fly ash Deposited Muddy Soil Reuse Technique Using...

... ABSTRACT: Designing an effective cement for arctic applications is challenging. The ideal arctic cement needs to have a unique combination of physical properties, which are difficult to achieve simultaneously. Even though custom designed formulations of conventional API Portland cements...

... technology is developed. So offshore rig industry face the new era. artificial intelligence operation drilling fluids and materials wellbore simulator pipe modeling cement drill bit implementation drilling simulation object-oriented architecture drilling process drilling fluid management...

... ABSTRACT Cementing in deepwater wells has some challenges such as cold temperatures, shallow flow, and lost circulation. With the water depth increasing, the sea water temperature decreases gradually. So, the test program of deepwater cement slurry is different from that of the general cement...

... ABSTRACT Controlled low strength material (CLSM) is a flowable mixture such that it does not need compaction. It is produced by mixing Portland cement, fly ash, fine aggregates, water, and chemical admixtures. Sand is the most commonly used fine aggregates in the conventional CLSM...

... lightweight aggregate have different effects on the properties of the aggregate. Therefore, a suitable formula must be selected in accordance with the application. Among all groups, group D (cement: slaked lime: metakaolin: fly ash: sand =12.5%: 12.5%: 28.125%: 9.375%: 37.5%) had the best mechanical...