Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 20 of 80 for “"Mortars"”.
-
Toward Rational Design of Masonry Mortars
… amount of pore volume and the size of the pores. Mortars with high moisture retentivity and cohesion at high water contents were found to have higher adhesion potential and better bond strength to masonry units. An increase in the cement content with its high surface area increases the fresh …
-
Neutron shielding properties of mortars containing haydite aggregate
<p>http://www.worldcat.org/oclc/28358477</p>
-
Fatigue and fracture of cement mortars containing fly ash
… of fly ash on the fatigue resistance of cement mortars when included as a partial cement replacement, and to seek to improve the understanding of cyclic fatigue crack growth mechanisms in cementitious materials. Mortar mixes were prepared with similar compressive cube strengths using a range of …
-
Assessing the age at cracking of concrete repair mortars
… mortar types i.e. three commercially available mortars and two laboratory mixed mortars with water-tocement ratio (w/c) = 0.45 and w/c = 0.6 were used in the ring test and material property tests. The influence of curing on the crack resistance of overlays was also investigated. An analytical …
-
A study of the gelation of air-setting refractory mortars
… mineral constituents of the clays used in the mortars was discussed. One of the clays was found to contain considerably more free silica than did the other clay. This did not seem to have too great an effect on the hardening during the storage period. Opal was found to be present in one of the …
-
The effect of steam at atmospheric pressure on cement mortars
Thesis: B.S., Massachusetts Institute of Technology, Department of Mechanical Engineering, 1918
-
Super Absorbent Polymers (SAPs) as physical air entrainment in cement mortars
Super absorbent polymers (SAPs) are novel multipurpose materials in concrete technology. This study investigated the potential for using SAPs as a mechanism for physical air entrainment. Mixtures were produced using various quantities of either dry or pre-saturated SAP to replace conventional air …
-
Utilization of municipal solid waste incinerator fly ash in cement mortars
… an incineration facility to be used in cement mortars by using existing standard test methods for cement and coal fly ash. Two types of MSWI fly ash samples: chemically treated and untreated fly ashes, were used. The treated fly ash was used to replace fine aggregates while the finer untreated …
-
Assessment and prediction of chloride ingress and carbonation in patch repair mortars
The specifications for concrete patch repair mortars usually entail mechanical properties such as compressive strength and tensile strength. However, these properties may not directly relate to the desired performance in relation to durability and prevention of reinforcement corrosion. In addition, …
-
Influence of curing on the properties of concretes and mortars in hot climates
… absorption and compressive strength of cement mortars and concretes made with and without pulverized fuel ash (pfa) and ground granulated blast-furnace slag (ggbs). Three 00 environments were chosen as follows: 1) 20C+70%RH, 2) 35C+70%RH, and 3) 45C+30%RH. To simulate in-place casting, the …
-
The effect of curing conditions on the tensile strength of super cement mortars
Thesis (B.S.)--Michigan State College of Agriculture and Applied Science, 1926
-
The elastic properties of calcium leached cement pastes and mortars : a multi-scale investigation
Calcium leaching induced aging in concrete creates a new material with degraded macroscopic mechanical properties. Although the degradation of strength has been elaborately studied in the last decade, the degradation of elasticity has not been investigated in the same depth. This thesis presents a …
-
Development of a theory of particle mixtures and its application to aggregates, mortars and concretes
… for application to aggregates, powder pastes, mortars and concretes covering such properties as water demand, cohesion and per cent fines, cement content and plastic density. Derived relationships are examined including those between water demand and cement content The original concept proposed …
-
Performance Criteria Recommendations for Mortars Used in Full-Depth Precast Concrete Bridge Deck Panel Systems
… that indicates required performance criteria for mortars. This specification can be used to determine whether particular mortars or grouts are suitable for use in a full-depth precast concrete bridge deck panel system.
-
Effectiveness of high strength repair mortars in structural patch repairs of concrete members under axial compression
There is a dearth of knowledge and research into the performance and efficacy of repair materials used in structural concrete patch repair applications. The repercussions of this have led to the development of repair standards and guidelines that fail to adequately cover requirements for structural …
-
Influence of mix design parameters on restrained shrinkage cracking in non-structural concrete patch repair mortars
… cracking in non-structural concrete patch repair mortars (PRMs). This dearth of information makes the design and development of PRMs with improved resistance to cracking challenging. The problem is further compounded by the fact that the existing code of practice for concrete repair - the EN …
-
The effects of chloride-based deicing chemicals on degradation of portland cement mortars with alkali reactive aggregate
… the specimens revealed that the expansion of the mortars was mainly caused by formation of the oxychloride phases and that it was related to microcracking induced by the F/T cycles. The specimens exposed to MgCl2 had the highest reduction of compressive strength, followed by the specimens exposed …
Page 1 of 4