beams lightweight concrete and glass blocks

... on lightweight concrete beams to examine the applicability of existing theories and design codes to lightweight concrete especially high-strength lightweight aggregate concrete and foamed concretes ... aggregate concrete with normal weight sand, and foamed concrete 167 6.1.2 Design methods for lightweight aggregate concrete with normal weight sand beams 168 6.1.3 Model and prediction ... including: lightweight aggregate 12 concrete, lightweight aggregate-foamed concrete and foamed concrete Material strengths will range from 30 to 40 MPa for lightweight aggregate-foamed concrete and...

Ngày tải lên: 10/09/2015, 15:48

... (Gravimetric) of Concrete Standard Test Method for Slump of Portland Cement Concrete Standard Practice for Sampling Freshly Mixed Concrete Standard Test Method for Air Content of Freshly Mixed Concrete ... Standard Specification for Concrete Aggregates C 94 Standard Specification for Ready-Mixed Concrete C 127 Standard Test Method for Specific Gravity and Absorption of Coarse Aggregate C 128 Standard ... Tobin, Robert E., “Handling Lightweight Concrete on the Job,” Lightweight Concrete, SP-29, American Concrete Institute, Detroit, 1971, pp 63-71 Tobin, Robert E., “Hydraulic Theory of Concrete Pumping,”...

Ngày tải lên: 24/10/2014, 17:44

... practical application of glass sand concrete and “sandless concrete , from the perspective of mix design, mechanical properties and durability Both glass sand concrete and “sandless concrete could be ... cement paste and the glass sand, and the increase in fineness modulus of glass sand Limbachiya [2009] used waste glass sand to substitute natural sand in concrete up to 50% replacement and reported ... natural sand with glass sand in concrete at 30, 50 and 70% content The compressive strength of concrete at 28 days, displayed 99.4, 90.2 and 86.4% of the reference concrete without glass sand This...

Ngày tải lên: 10/09/2015, 08:30

... concrete prestressed beams due to creep and shrinkage at transfer, after transfer and during service 2) understand the behavior of the SCC and conventional concrete prestressed beams such as deflection, ... creep and shrinkage of the SCC and conventional concrete mixes used For this study only Grade 40 MPa concrete was tested To study and compare the prestress losses of SCC and conventional concrete ... SCC prestressed beams with that of conventional concrete prestressed beams at transfer, after transfer and during service Estimation of prestress losses in the prestressed concrete beams is essential...

Ngày tải lên: 26/09/2015, 10:13

... DIVISION - CONCRETE AND CONCRETE STRUCTURES Concrete and Concrete Structures-Section 06100 9.5.3 AGGREGATES 19 9.5.4 BINS 19 AND SCALES 9.6 Mixing and Delivery 20 10 CONCRETE PLACEMENT ... 18/04/2000 16:05:00 06100 - iii DIVISION - CONCRETE AND CONCRETE STRUCTURES Concrete and Concrete Structures-Section 06100 SECTION 06100 - CONCRETE AND CONCRETE STRUCTURES DESCRIPTION This Specification ... - CONCRETE AND CONCRETE STRUCTURES Concrete and Concrete Structures-Section 06100 17.PRECAST CONCRETE ELEMENTS 17.1 GENERAL The contractor shall provide and install the precast constituents and...

Ngày tải lên: 24/01/2014, 23:20

Ngày tải lên: 12/05/2014, 23:57

Ngày tải lên: 13/05/2014, 03:01

... 135 and 160 lb/ft3, and is normally taken as 145 to 150 lb/ft3 Concrete, sand -lightweight — Lightweight concrete containing only normalweight fine aggregate that conforms to ASTM C33 and only lightweight ... 10.3.3 Concrete — Mixture of portland cement or any other hydraulic cement, fine aggregate, coarse aggregate, and water, with or without admixtures Concrete, all -lightweight — Lightweight concrete ... Lightweight concrete containing only lightweight coarse and fine aggregates that conform to ASTM C330 Concrete, lightweight — Concrete containing lightweight aggregate and an equilibrium density, as...

Ngày tải lên: 28/05/2014, 18:26

... the classification and selection criteria of glass and glass ceramics for medical and dental applications are observed This part starts with an introduction to medical glasses and glass ceramics, ... of the glasses and shows how to calculate and formulate the glass batches, melt, and cast glasses The part also explains how to predict the right annealing point, transition point, and glass softening ... base glasses The third part presents the manufacturing and methodology, the assessment of physical and chemical properties and the development of colour and fluorescence in medical glasses and glass...

Ngày tải lên: 30/05/2014, 00:04

... Structural Lightweight Concrete (ASTM C 567), not exceeding 1840 kg/m3 In this code, a lightweight concrete without natural sand is termed “all -lightweight concrete and lightweight concrete in ... 39M-03 Standard Test Method for Compressive Strength of Cylindrical Concrete Specimens C 42/ C 42M-04 Standard Test Method for Obtaining and Testing Drilled Cores and Sawed Beams of Concrete ... Standard Cement C 172-04 Standard Practice for Sampling Freshly Mixed Concrete C 192/ C 192M-02 Standard Practice for Making and Curing Concrete Test Specimens in the Laboratory C 260-01 Standard...

Ngày tải lên: 01/07/2014, 13:20

... STANDARD Licensed Copy: Puan Ms Norhayati, Petroliam Nasional Berhad 4397000, 25 September 2003, Uncontrolled Copy, (c) BSI Glossary of Building and civil engineering terms — Part 6: Concrete and ... 6100-6.5:1987 This British Standard, having been prepared under the direction of the Basic Data and Performance Criteria for Civil Engineering and Building Structures Standards Committee, was published ... comprises a front cover, an inside front cover, pages i and ii, pages to and a back cover This standard has been updated (see copyright date) and may have had amendments incorporated This will be...

Ngày tải lên: 08/07/2014, 22:20

... removal” defined in Sections and of [4] This process preserves descents, excedances, and fixed points (and so also ascents and deficiencies) Lemma 4.3 Given integers i and j, j = i, define ρi (j) ... about W (v) and A(v) is given in the following lemma and its corollary Lemma 2.4 If two vertices v and v ′ have sequences of colors that agree through wl−1 , then the order of v and v ′ is determined ... by the order of wl (v) and wl (v ′ ) In fact, if {w1 , , wl−1} has an even number of vertices from descending blocks, then v and v ′ come in the same order as wl (v) and wl (v ′ ) Otherwise,...

Ngày tải lên: 08/08/2014, 11:20

... portland-cement concrete and concrete containing slag cement Klieger and Isberner (1967) found few differences between concrete containing slag cement and concrete containing only portland cement ... intimate and uniform blend of granulated blastfurnace slag and hydrated lime; or an intimate and uniform blend of portland cement and granulated blast-furnace slag, portland cement, and pozzolan, ... American Concrete Institute 116R Cement and Concrete Terminology 211.1 Standard Practice for Selecting Proportions for Normal, Heavyweight, and Mass Concrete 212.3R Chemical Admixtures for Concrete...

Ngày tải lên: 24/10/2014, 16:04

... side of concrete slabs and concrete and masonry walls Table 5.2—Time assigned to finish materials on fire-exposed side of concrete and masonry walls Finish description Portland cementsand plaster ... portland cement-sand plaster A Portland cement-sand plaster on metal lath 1.75 1.50 1.25 2.25 2.25 A For portland cement-sand plaster /8 in or less in thickness, and applied directly to concrete ... OF CONCRETE AND MASONRY CONSTRUCTION Fig 2.3 (a), (b), and (c)—Fire resistance of concrete base slabs with overlays of insulating concrete, 30 lb/ft3 Fig 2.3.1(a) and (b)—Fire resistance of concrete...

Ngày tải lên: 24/10/2014, 17:40

... Discussion in this standard is limited to structural grade, lightweight aggregates, and structural lightweight aggregate concretes Structural lightweight aggregate concrete is defined as concrete which: ... that a sand lightweight concrete with 211.2-10 ACI STANDARD PRACTICE Fig 3.3.2Relationship of compressive strength and cement content of field concrete for lightweight fine aggregate and coarse ... Standard Practice for Making and Curing Concrete Test Specimens in the Field C 33 Standard Specification for Concrete Aggregates C 94 Standard Specification for Ready-Mixed Concrete C 127 Standard...

Ngày tải lên: 24/10/2014, 17:40

... 135 and 160 lb/ft3, and is normally taken as 145 to 150 lb/ft3 Concrete, sand -lightweight — Lightweight concrete containing only normalweight fine aggregate that conforms to ASTM C33 and only lightweight ... 10.3.3 Concrete — Mixture of portland cement or any other hydraulic cement, fine aggregate, coarse aggregate, and water, with or without admixtures Concrete, all -lightweight — Lightweight concrete ... Lightweight concrete containing only lightweight coarse and fine aggregates that conform to ASTM C330 Concrete, lightweight — Concrete containing lightweight aggregate and an equilibrium density, as...

Ngày tải lên: 24/06/2015, 14:35

... TCVN 5574:2012 K t c u bê tông bê tông c t thép – Tiêu chu n thi t k Concrete and reinforced concrete structures – Design standard Ph m vi áp d ng 1.1 Tiêu chu n thay th cho tiêu chu n TCXDVN ... kéo” ã dùng tiêu chu n TCVN 5574:1991 3.1.1 C p b n ch u nén c a bê tông (Compressive strength of concrete) Ký hi u b ng ch B, giá tr trung bình th ng kê c a cư ng ch u nén t c th i, tính b ng ơn ... tiêu chu n thí nghi m nén tu i 28 ngày 3.1.2 C p b n ch u kéo c a bê tông (Tensile strength of concrete) Ký hi u b ng ch Bt, giá tr trung bình th ng kê c a cư ng ch u kéo t c th i, tính b ng...

Ngày tải lên: 10/07/2015, 13:16

... reader (Tecan, Switzerland) and analysed using the Megallan v4.0 software (Tecan, Switzerland) Fluorescence readings from the DNA standards were used to construct a standard curve DNA samples ... PicoGreen using the same protocol and concentrations determined by comparing fluorescence readings against the standard curve 33 Methods and Materials 2.4 SNP Selection and Genotyping The 1152 SNPs ... and lower (CL) bounds represent the 5% tails of the overall probability For blocks that consist of or more SNPs, 95% of the SNP pairs must be in strong LD, with CU >= 0.98 and CL >= 0.7 For blocks...

Ngày tải lên: 14/09/2015, 14:07

... Disequilibrium and Haplotype Map of the Chromosome 6p and the Major Histocompatibility Complex To characterize the genetic variation and patterns of linkage disequilibrium (LD) of the human chromosome 6p and ... heatmap The positions of the SNPs in the blocks are highlighted in blue These blocks lie within the high LD peak described earlier and overlap with zinc finger and histone clusters Panel B: The 3rd ... LD, r2 and D′, were calculated between all possible SNP pairs separated by less than 5Mb D′ and r2 are both based on the disequilibrium parameter D (Ott 1999), a difference between observed and...

Ngày tải lên: 14/09/2015, 14:07

... 60 blocks per Mb By contrast there are 24 blocks per Mb in the extended class I segment, while the MHC average is 41 blocks per Mb Haplotype blocks in the extended class I region are larger and ... are defined haplotype blocks This heatmap clearly illustrates the fragmented and shorter haplotype blocks in the Class II region, distinct from the contiguous and longer blocks in the extended ... enables more haplotype blocks to be uncovered Most of the SNPs on this map (1712 out of 1877, or 91%) lie within defined haplotype blocks and a total of 203 haplotype blocks can be identified...

Ngày tải lên: 14/09/2015, 14:07