1 edition of Exploratory studies of early strength development in portland cement pastes and mortars found in the catalog.
Exploratory studies of early strength development in portland cement pastes and mortars
Raymond Leonard Blaine
by U.S. Dept. of Commerce, National Bureau of Standards, For sale by the Supt. of Docs., U.S. Govt. Print. Off. in Washington, D.C
Written in English
Includes bibliographical references
|Statement||R.L. Blaine and L.A. Tomes|
|Series||Building science series -- 28|
|Contributions||Tomes, L. A|
|The Physical Object|
|Pagination||ii, 11 p. :|
|Number of Pages||11|
Type III, High-Early-Strength, Portland Cement 1. Product Description Basic Use: Lehigh ASTM Type III (AASHTO TYPE III), low alkali, Portland cement is a special purpose hydraulic cement that produces higher early strengths relative to a normal Type I-II Portland cement. Type III Portland cement is formulated to be used in grouts, mortars and File Size: KB. Comparison of Brick Clays and a Kaolinitic Clay Regarding Calcination and Performance in Blended Cement Mortars. Pages Monitoring Strength Development of Cement Substituted by Limestone Calcined Clay Using Different Piezo Configurations Volumetric Deformations at Early Age on Portland Cement Pastes with the Addition of Illitic.
This paper aims to review selected developments in our understanding of the rheology of cement based materials since about During this period a comprehensive book , and proceedings of several conferences at which rheology of cement−based materials . Concrete is a composite material composed of fine and coarse aggregate bonded together with a fluid cement (cement paste) that hardens (cures) over time. In the past limebased cement binders were often used, such as lime putty, but sometimes with other hydraulic cements, such as a calcium aluminate cement or with Portland cement to form Portland cement concrete (for its visual resemblance to.
Other articles where High-early-strength portland cement is discussed: cement: Types of portland cement: (Type I), modified (Type II), high-early-strength (Type III), low-heat (Type IV), and sulfate-resistant (Type V). In other countries Type II is omitted, and Type III is called rapid-hardening. Type V is known in some European countries as Ferrari cement. Research and Development Bulletin RDT, Portland Cement Association [L’effetde la formation secondaire d’ettringite sur la durability! du btiton une analyse bibliographique. Bulletin de Recherche et D4veloppement RDT,Association du Ciment Portland], Skokie, Illinois, U.S.A
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Get this from a library. Exploratory studies of early strength development in portland cement pastes and mortars. [Raymond Leonard Blaine; L A Tomes]. Preparation of mortars was carried out according to ASTM C, mixing g of Portland cement, g of natural sand and mL of water for control mortars.
The rest of the mortars were prepared replacing a mass percentage of Portland cement by fly ash (original or sized fractions).Cited by: Exploratory studies of early strength development in portland cement pastes and mortars / R. Blaine and L. : Raymond Leonard Blaine.
Early experiments carried out on cement showed that a mix of was approximately of the strength of neat cement and a mix of was approximately its strength. While Portland cement has many advantages when designing modern structures, unfortunately it is not compatible with historic mortars, mainly because they were fired at the lower temperature of about ºC.
The results confirmed that a low curing temperature delays strength development in the early days of hydration and slows down the strength growth rate of mortars, with an increase in age. The influence of the calcined material on the early and late strength development of Portland cement was analyzed.
The early 3- and 7-day strength as well as the late day strength of Portland cement replaced with 20% by weight of the calcined material yielded the optimum strength by: 2. RESEARCH ON THE IMPROVEMENT OF EARLY STRENGTH DEVELOPMENT FOR ORDINARY PORTLAND CEMENT YoungChan SONG*1, YongRo KIM *2, OokJong KIM*3 and DoBum LEE*4 ABSTRACT In order to improve early strength development performance of ordinary Portland cement with economically feasible compared to early strength Portland cement, the influence of Blaine surface.
Addition of 5% of entrained water in the form of SAP even in cement pastes containing 20% of silica fume reduces the early age strength of the pastes by about 20%, while at later ages the strength. This paper presents the results of an investigation on the effect of Portland cement replaced by fly ash or granulated blast-furnace slag on the concrete strength at different curing temperatures.
Compressive strength results are analysed according to the hyperbolic strength-age function by introducing a power indexn. The regression analysis is done considering different n values Cited by: The results obtained from this study suggest that HRW has a positive effect on the strength and durability properties of Portland cement mortars.
According to Glavind [ 17 ], the goals of sustainable concrete should be achieved by utilizing the inherently environmentally beneficial properties of concrete, for example, the high strength and good : Byung Wan Jo, Muhammad Ali Sikandar, Sumit Chakraborty, Zafar Baloch.
The present study provided a better understanding of Portland cement hydration and evidences of lower curing pressure effects on microstructure of cement paste. Results according to this study could supply new concerns in engineering performance prediction, especially for concrete applications of transportation infrastructure in high altitude : Zhuangzhuang Liu, Baowen Lou, Aimin Sha, Peidong Du, Xuhao Wang.
Early Age Portland Cements (EAPC) can name the range of calcareous hydraulic binders developed from the mid th C. Aspdin’s and I.C. Johnson´s cements, sometimes called meso-Portland cement  produced in shaft kilns) until the ’s when the cement quality was controlled, based on the knowledge of the cement chemistry and the.
January Profierties of Hardened Portland Cement Paste 3 1 0 - Mix x-II A-,’ “o 0,2 Gel-Space Ratio (X) Fig. Compresske strength w. gel-space raiio for cement-sand mortars. = compressive strength (lb, per s.+ in,); x = gel-space ratio.
The products from 1 cm,~of cement require a little more than 2 cm.s of sp~ce. The results manifested that all replacements present the development of strength; this improvement was less in the early ages and raised at the higher ages in comparison with the control specimens.
Microstructural analysis showed the formation of hydration compounds in mortar paste. Typically times are 1 day (for high early strength cement), 3 days, 7 days, 28 days and 90 days (for low heat of hydration cement).
When considering cement paste strength tests, there are two items to consider: Cement mortar strength is not directly related to concrete strength.
Cement paste strength is typically used as a quality control measure. Strength tests are done on cement mortars (cement. Tests for consistency, bleeding, and setting of portland cement pastes with and without addition of chemical admixtures are reported.
On the basis of the results obtained from these tests and previous understanding, some innovative concepts concerning the nature and the mechanism of the behavior of portland cement paste in its early age are Cited by: Portland Cement. Today, Portland cement is the most widely used building material in the world with about billion tonnes ( billion tons) produced each year.
Annual global production of Portland cement concrete hovers around million cubic meters (5 billion cubic yards) per by: 1. Structure and Physical Properties of Hardened Portland Cement Paste. POWERS. Influence of curing temperature dependent microstructure on early-age concrete strength development, Cement and Concrete Research, Estimating the permeability of cement pastes and mortars using image analysis and effective Cited by: Coupling thermodynamics and digital image models to simulate hydration and microstructure development of portland cement pastes - Volume 26 Issue 4 - Jeffrey W.
Bullard, Barbara Lothenbach, Paul E. Stutzman, Kenneth A. SnyderCited by: ALTERNATIVES TO PORTLAND CEMENT AN INTRODUCTION Cement, or some form of cementing material is an essential ingredient in most forms of building construction. Cement is the vital binding agent in concretes, mortars and renders, and is used for the production of walling blocks and roofing tiles.
Since its invention in the first half ofFile Size: KB. The effectiveness of a MS – C-S-H – PCE admixture in the early strength development of composite cement with zeolite was investigated. It has been found that the addition of MS – C-S-H – PCE significantly increases the compressive strength of cement Author: Tetiana Kropyvnytska, Teresa Rucinska, Hanna Ivashchyshyn, Roman Kotiv.Compressive Strength of cement mortar.
The compressive strength at the 7 day showed a Considerable increase in the early strength gain particularly at Specimen 15% GP gave a 29% increase in the strength at 7th day more than control specimen.
At 28th day this difference in strength Cited by: In this study, a comprehensive analysis on the effect of the mechanical functionalization of commercially available MWCNTs in the development of Portland cement nanomodified mortars is presented.
The MWCNTs’ uniform distribution in the matrix was achieved through a one-step dispersion method, involving the application of ultrasonic energy and Cited by: 1.